Bottom guard plate extrusion die

Abstract

The utility model discloses a bottom guard plate extrusion die. The bottom guard plate extrusion die comprises a first die plate and a second die plate, an overflowing hole is formed in the first template, an inner forming strip is arranged at one end of the overflowing hole, and a rib plate extrusion groove is formed in the inner forming strip; an outer forming through hole is formed in the second mold plate, the second mold plate is arranged on one side of the first mold plate, the inner forming strip penetrates through the outer forming through hole, the outer wall of the inner forming strip and the hole wall of the outer forming through hole are arranged in a spaced mode, and a frame extrusion cavity is formed between the outer wall of the inner forming strip and the hole wall of the outer forming through hole; one end of the overflowing hole is communicated with the frame body extrusion cavity; and the first template is provided with a rib plate flow guide groove, the rib plate flow guide groove is communicated with the rib plate extrusion groove, and the rib plate flow guide groove is located in the overflowing hole and is communicated with the overflowing hole.

Description

Technical Field

[0001] The utility model relates to the field of batteries, in particular to a bottom guard plate extrusion die. Background Art

[0002] A bottom guard plate is required at the bottom of the battery of a new energy vehicle to support and protect the battery. In order to reduce the weight of the vehicle, the bottom guard plate is usually hollow, and its cross section includes a frame and ribs inside the frame. Some existing bottom guard plates are produced by splicing and welding, but the production cost is high and the production efficiency is insufficient. In order to reduce production costs and improve production efficiency, other existing bottom guard plates are produced by continuous extrusion using an extrusion die. The extrusion die includes a first template and a second template. The first template has a flow hole and an inner forming strip located at one end of the flow hole. The second template has an outer forming through-hole. The inner forming strip is passed through the outer forming through-hole to form a frame extrusion cavity between the two. The inner forming strip is provided with a rib extrusion groove. During production, the metal flow enters the frame extrusion cavity and the rib extrusion groove along the flow hole. The frame extrusion cavity extrude a frame of the bottom guard plate cross section, and the rib extrusion groove extrude a rib of the bottom guard plate cross section. The bottom guard plate extrusion die continuously extrudes the bottom guard plate blank, which is then cut to form the bottom guard plate. However, in the bottom guard plate produced by this method, defects such as material shortage are prone to occur at the rib plate. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a bottom guard plate extrusion die that can reduce the risk of material shortage at the rib plate of the bottom guard plate and improve the yield rate of the produced bottom guard plate.

[0004] According to the embodiment of the present utility model, the bottom guard plate extrusion die includes a first template and a second template. The first template is provided with an overflow hole, one end of which is provided with an inner molding strip, and the inner molding strip is provided with a rib plate extrusion groove; the second template is provided with an outer molding through hole, the second template is provided on one side of the first template, the inner molding strip is passed through the outer molding through hole, the outer wall of the inner molding strip is spaced apart from the hole wall of the outer molding through hole, and a frame extrusion cavity is formed between the outer wall of the inner molding strip and the hole wall of the outer molding through hole, and the one end of the overflow hole is connected to the frame extrusion cavity; wherein, the first template is provided with a rib plate guide groove, the rib plate guide groove is connected to the rib plate extrusion groove, and the rib plate guide groove is located in the overflow hole and connected to the overflow hole.

[0005] The bottom guard plate extrusion die according to the embodiment of the present invention has at least the following beneficial effects: when the bottom guard plate extrusion die is used for production, since the rib plate guide groove is connected to the rib plate extrusion groove, and the rib plate guide groove is located in the flow hole, during the metal flow passing through the flow hole, part of the metal flow can enter the rib plate extrusion groove through the rib plate guide groove, so that the metal flow flowing through the rib plate extrusion groove increases, thereby reducing the risk of material shortage at the rib plate of the bottom guard plate and improving the yield rate of the produced bottom guard plate.

[0006] According to some embodiments of the present invention, the width of the rib plate guide groove is greater than the width of the rib plate extrusion groove.

[0007] According to some embodiments of the present invention, the side walls of the rib plate guide groove are parallel to the side walls of the rib plate extrusion groove.

[0008] According to some embodiments of the present invention, the inner forming strip is provided with at least two rib extrusion grooves arranged along the extension direction, the first template is provided with at least two rib guide grooves, the rib extrusion grooves correspond one to one to the rib guide grooves, the extension directions of two adjacent rib extrusion grooves are set at an angle, and the extension directions of two adjacent rib guide grooves are set at an angle.

[0009] According to some embodiments of the present invention, the first template is provided with a first shunt bridge, which is located in the flow hole and separates the flow hole, and the inner molding strip is connected to one end of the first shunt bridge close to the second template.

[0010] According to some embodiments of the present invention, the first diverter bridge includes a horizontal bar portion and a vertical bar portion, the horizontal bar portion extends in the front-to-back direction, both ends of the horizontal bar portion are connected to the hole wall of the flow hole, the vertical bar portion extends in the up-down direction, both ends of the vertical bar portion are connected to the hole wall of the flow hole, the middle part of the vertical bar portion is connected to the area other than the two ends of the horizontal bar portion, and the inner molded bar is connected to one end of the horizontal bar portion close to the second template.

[0011] According to some embodiments of the present invention, the first shunt bridge is provided with at least two vertical bars, all of which are arranged at intervals along the extension direction of the horizontal bar, and the side of the vertical bar close to the second template is recessed in the flow hole.

[0012] According to some embodiments of the present invention, at least part of the vertical strip portion is recessed in the flow hole on a side away from the second template, and the horizontal strip portion is recessed in the flow hole on a side away from the second template.

[0013] According to some embodiments of the present invention, a third template is further included, which is arranged on the other side of the first template. The third template is provided with an inlet hole, one end of the inlet hole is connected to the other end of the flow hole, and the cross-section of the inlet hole tends to increase along the direction of its hole axis approaching the first template.

[0014] According to some embodiments of the present invention, the external molded through hole includes a small hole segment and a large hole segment, the small hole segment is connected to the large hole segment, the internal molded strip is accommodated in the small hole segment, and the frame extrusion cavity is located in the small hole segment.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 A three-dimensional schematic diagram of a bottom guard plate extrusion die according to an embodiment of the present utility model;

[0018] Figure 2 This is a three-dimensional schematic diagram of the second template of an embodiment of the present utility model;

[0019] Figure 3 For the embodiment of the utility model Figure 2 A local enlarged schematic diagram of point F;

[0020] Figure 4 This is a three-dimensional schematic diagram of a first template according to an embodiment of the present utility model;

[0021] Figure 5 For the embodiment of the utility model Figure 1 Cross-sectional view in CC direction;

[0022] Figure 6 For the embodiment of the utility model Figure 1 Cross-sectional view in DD direction;

[0023] Figure 7 For the embodiment of the utility model Figure 2 Cross-sectional view in the EE direction;

[0024] Figure 8 For the embodiment of the utility model Figure 7 A local enlarged schematic diagram of point G.

[0025] Reference numerals:

[0026] The first template 100, the flow hole 110, the inner molding strip 120, the rib plate extrusion groove 121, the rib plate guide groove 130, the first diversion bridge 140, the horizontal strip portion 141, and the vertical strip portion 142;

[0027] The second template 200 has an outer through-hole 210, a small hole section 211, and a large hole section 212;

[0028] Frame extrusion cavity 300;

[0029] The third template 400 , the flow inlet 410 , and the second diversion bridge 420 . DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of this utility model, "a plurality" means more than two. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] Reference Figures 1 to 8The bottom guard plate extrusion die of the embodiment of the present utility model includes a first template 100 and a second template 200. The first template 100 is provided with an overflow hole 110, and an inner molding strip 120 is provided at one end of the overflow hole 110, and the inner molding strip 120 is provided with a rib extrusion groove 121; the second template 200 is provided with an outer molding through hole 210, and the second template 200 is arranged on one side of the first template 100, and the inner molding strip 120 is passed through the outer molding through hole 210, and the outer wall of the inner molding strip 120 is spaced apart from the hole wall of the outer molding through hole 210, and a frame extrusion cavity 300 is formed between the outer wall of the inner molding strip 120 and the hole wall of the outer molding through hole 210, and one end of the overflow hole 110 is connected with the frame extrusion cavity 300; wherein the first template 100 is provided with a rib guide groove 130, and the rib guide groove 130 is connected with the rib extrusion groove 121, and the rib guide groove 130 is located in the overflow hole 110 and is connected with the overflow hole 110.

[0035] When using the bottom guard plate extrusion die for production, since the rib plate guide groove 130 is connected to the rib plate extrusion groove 121, and the rib plate guide groove 130 is located in the flow hole 110, during the metal flow passing through the flow hole 110, part of the metal flow can enter the rib plate extrusion groove 121 through the rib plate guide groove 130, so that the metal flow flowing through the rib plate extrusion groove 121 increases, thereby reducing the risk of material shortage at the rib plate of the bottom guard plate and improving the yield rate of the produced bottom guard plate.

[0036] In the embodiment, the width of the rib plate guide groove 130 is greater than the width of the rib plate extrusion groove 121. The width of the rib plate guide groove 130 is greater than the width of the rib plate extrusion groove 121, so that the rib plate guide groove 130 can provide sufficient metal flow into the rib plate extrusion groove 121, so that the metal flow in the rib plate extrusion groove 121 remains sufficient, thereby further reducing the risk of material shortage at the rib plate of the bottom guard plate and improving the yield rate of the produced bottom guard plate.

[0037] Specifically, part of the metal flow in the rib plate extrusion groove 121 comes from the rib plate guide groove 130 , and part of the metal flow comes from the metal flow directly entering the rib plate extrusion groove 121 .

[0038] It can be understood that the width of the rib plate extrusion groove 121 is A, the width of the rib plate guide groove 130 is B, and the width of the rib plate guide groove 130 can be a certain multiple of the rib plate extrusion groove 121, such as two times, three times, four times or more, or other multiples. Those skilled in the art can make specific configurations according to actual needs.

[0039] In an embodiment, the sidewalls of the rib guide groove 130 are parallel to the sidewalls of the rib extrusion groove 121. The rib guide groove 130 can relatively smoothly guide the metal flow into the rib extrusion groove 121, so that the rib extrusion groove 121 is fed with a stable and sufficient amount of material.

[0040] Optionally, in some embodiments, the cross-section of the rib plate guide groove 130 can also be trapezoidal, with the end of the rib plate guide groove 130 close to the rib plate extrusion groove 121 being the large end. This can increase the material supply to the rib plate extrusion groove 121 while also making the pressure and flow rate of the metal flow in the rib plate extrusion groove 121 relatively reasonable, resulting in a better rib plate forming effect.

[0041] In this embodiment, the inner molding strip 120 is provided with eleven rib extrusion grooves 121 arranged along its extension direction, and the first mold plate 100 is provided with eleven rib guide grooves 130. The rib extrusion grooves 121 correspond one to one with the rib guide grooves 130. The extension directions of two adjacent rib extrusion grooves 121 are arranged at an angle, and the extension directions of two adjacent rib guide grooves 130 are arranged at an angle. The cross-section of the bottom guard plate manufactured by the above-mentioned bottom guard plate extrusion die has multiple ribs, which improves the overall strength of the bottom guard plate. Furthermore, the angled arrangement of two adjacent ribs, i.e., the non-parallel ribs, helps to improve the all-directional strength of the bottom guard plate.

[0042] Specifically, eleven rib extrusion grooves 121 are provided in the inner molding strip 120, and eleven rib guide grooves 130 are provided on the first template 100. It is conceivable that the number of rib extrusion grooves 121 and rib guide grooves 130 can also be other numbers, such as one, two, three, or more. Those skilled in the art can reasonably select according to the structural design requirements of the bottom guard plate, and each rib extrusion groove 121 and rib guide groove 130 corresponds to a rib on the bottom guard plate.

[0043] Specifically, along the extension direction of the inner forming strip 120 , the odd-numbered rib extrusion grooves 121 are parallel to each other, the even-numbered rib extrusion grooves 121 are parallel to each other, and the odd-numbered rib extrusion grooves 121 are arranged at an angle to the even-numbered rib extrusion grooves 121 .

[0044] In this embodiment, the first mold plate 100 is provided with a first diverter bridge 140. The first diverter bridge 140 is located within and separates the flow holes 110. The inner molding strip 120 is connected to one end of the first diverter bridge 140 near the second mold plate 200. The provision of the first diverter bridge 140 allows the metal flow to contact the first diverter bridge 140 as it passes through the flow holes 110, thereby improving fluidity and reducing the pressure of the metal flow. The metal flow within the flow holes 110 is relatively balanced at various locations, resulting in relatively stable pressure and flow when the metal flow reaches the frame extrusion cavity 300, facilitating continuous extrusion production.

[0045] In the embodiment, the first diverter bridge 140 includes a horizontal bar portion 141 and a vertical bar portion 142. The horizontal bar portion 141 extends in the front-to-back direction, with both ends of the horizontal bar portion 141 connected to the hole wall of the flow hole 110. The vertical bar portion 142 extends in the top-to-bottom direction, with both ends of the vertical bar portion 142 connected to the hole wall of the flow hole 110. The middle portion of the vertical bar portion 142 is connected to the area outside the ends of the horizontal bar portion 141. The inner molding bar 120 is connected to the end of the horizontal bar portion 141 near the second mold plate 200. The above-mentioned first diverter bridge 140 can effectively improve the fluidity of the metal flow and effectively balance the flow of the metal flow.

[0046] In an embodiment, the first shunt bridge 140 is provided with three vertical bars 142, all of which are arranged at intervals along the extension direction of the horizontal bar 141, and the vertical bars 142 are recessed in the flow hole 110 on the side close to the second template 200. The provision of three vertical bars 142 has a relatively appropriate effect on improving the fluidity of the metal flow in the flow hole 110, and can reduce the pressure of the metal flow to an appropriate level. In addition, the vertical bars 142 are recessed in the flow hole 110 on the side close to the second template 200, which can help improve the extrusion performance of the metal flow farther away from the inner forming strip 120. It is conceivable that the first shunt bridge 140 can also be provided with other numbers of vertical bars 142, such as one, two, three or more, or other numbers, and those skilled in the art can make specific configurations according to actual needs.

[0047] Specifically, the horizontal bar portion 141 and the vertical bar portion 142 of the first diverter bridge 140 are integrally formed, and thus have high structural strength and good diverter effect.

[0048] In the embodiment, part of the vertical strip portion 142 is recessed in the flow hole 110 on the side facing away from the second template 200, and the horizontal strip portion 141 is recessed in the flow hole 110 on the side facing away from the second template 200. This can help improve the extrusion performance of the metal flow farther away from the inner forming strip 120.

[0049] Specifically, part of the vertical bar portion 142 is recessed in the flow hole 110 at a depth of 25 mm on the side away from the second template 200, and the overall use effect is better; the side of the vertical bar portion 142 close to the second template 200 is recessed in the flow hole 110 at a depth of 20 mm, and the overall use effect is better.

[0050] In one embodiment, a third mold plate 400 is further included. The third mold plate 400 is disposed on the other side of the first mold plate 100. The third mold plate 400 is provided with an inlet hole 410, one end of which abuts the other end of the flow-through hole 110. The cross-section of the inlet hole 410 tends to increase along its axis as it approaches the first mold plate 100. By providing the third mold plate 400, during continuous extrusion, the metal flow sequentially passes through the inlet hole 410 of the third mold plate 400 and enters the flow-through hole 110 of the first mold plate 100. The metal flow then passes through the rib guide groove 130, the rib extrusion groove 121, and the frame extrusion cavity 300 to form the bottom guard plate blank. The bottom guard plate blank is ultimately discharged from the end of the outer forming through-hole 210 away from the first mold plate 100. The cross-section of the inlet hole 410 tends to increase along its axis as it approaches the first mold plate 100. This allows the metal flow pressure to gradually decrease as it passes through the third mold plate 400, reaching a suitable extrusion pressure and preventing excessive extrusion pressure.

[0051] Specifically, a second diverter bridge 420 is provided in the inlet hole 410 of the second template 200. The second diverter bridge 420 extends in the up and down directions. The second diverter bridge 420 is connected to one of the vertical bars 142. The second diverter bridge 420 of the third template 400 can also play a certain diversion role on the metal flow, improve the fluidity of the metal flow, and reduce the pressure of the metal flow. The metal flow in the inlet hole 410 is relatively balanced at all locations.

[0052] In the embodiment, the outer molded through hole 210 includes a small hole section 211 and a large hole section 212. The small hole section 211 and the large hole section 212 are connected, the inner molded strip 120 is accommodated in the small hole section 211, and the frame extrusion cavity 300 is located in the small hole section 211. The metal flow is extruded into a complete bottom guard plate blank by the inner molded strip 120 in the small hole section 211. The bottom guard plate blank is then removed through the outer molded through hole 210. The large hole section 212 does not contact the bottom guard plate blank, thus avoiding the risk of the bottom guard plate blank being blocked in the mold and facilitating processing.

[0053] Specifically, the small hole section 211 of the outer molded through hole 210 and the edge of the inner molded strip 120 both have a stepped working zone, so as to control the flow rate of each part by adjusting the different friction durations through the step difference and achieve consistency in extrusion molding.

[0054] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0055] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A bottom guard plate extrusion die, characterized in that: include: The first template (100) is provided with a flow hole (110), one end of the flow hole (110) is provided with an inner molding strip (120), and the inner molding strip (120) is provided with a rib extrusion groove (121); The second template (200) is provided with an outer molding through hole (210), the second template (200) is provided on one side of the first template (100), the inner molding strip (120) is passed through the outer molding through hole (210), the outer wall of the inner molding strip (120) and the hole wall of the outer molding through hole (210) are spaced apart, a frame extrusion cavity (300) is formed between the outer wall of the inner molding strip (120) and the hole wall of the outer molding through hole (210), and the one end of the flow hole (110) is communicated with the frame extrusion cavity (300); The first template (100) is provided with a rib plate guide groove (130), the rib plate guide groove (130) is communicated with the rib plate extrusion groove (121), and the rib plate guide groove (130) is located in the flow hole (110) and is communicated with the flow hole (110).

2. The bottom guard plate extrusion die according to claim 1, characterized in that: The width of the rib plate guide groove (130) is greater than the width of the rib plate extrusion groove (121).

3. The bottom guard plate extrusion die according to claim 1, characterized in that: The side wall of the rib plate guide groove (130) is parallel to the side wall of the rib plate extrusion groove (121).

4. The bottom guard plate extrusion die according to claim 3, characterized in that: The inner forming strip (120) is provided with at least two rib plate extrusion grooves (121) arranged along the extension direction, and the first template (100) is provided with at least two rib plate guide grooves (130), the rib plate extrusion grooves (121) correspond to the rib plate guide grooves (130) one by one, the extension directions of two adjacent rib plate extrusion grooves (121) are arranged at an angle, and the extension directions of two adjacent rib plate guide grooves (130) are arranged at an angle.

5. The bottom guard plate extrusion die according to claim 1, characterized in that: The first template (100) is provided with a first shunt bridge (140), the first shunt bridge (140) is located in the flow hole (110) and separates the flow hole (110), and the inner molding strip (120) is connected to one end of the first shunt bridge (140) close to the second template (200).

6. The bottom guard plate extrusion die according to claim 5, characterized in that: The first shunt bridge (140) includes a horizontal bar portion (141) and a vertical bar portion (142), wherein the horizontal bar portion (141) extends in the front-to-back direction, and both ends of the horizontal bar portion (141) are connected to the hole wall of the flow hole (110), and the vertical bar portion (142) extends in the top-to-bottom direction, and both ends of the vertical bar portion (142) are connected to the hole wall of the flow hole (110), and the middle portion of the vertical bar portion (142) is connected to the area other than the two ends of the horizontal bar portion (141), and the inner molding bar (120) is connected to one end of the horizontal bar portion (141) close to the second template (200).

7. The bottom guard plate extrusion die according to claim 6, characterized in that: The first shunt bridge (140) is provided with at least two vertical strips (142), all of which are arranged at intervals along the extension direction of the horizontal strip (141), and the vertical strip (142) is recessed in the flow hole (110) on one side close to the second template (200).

8. The bottom guard plate extrusion die according to claim 6, characterized in that: At least a portion of the vertical strip portion (142) is recessed in the flow hole (110) on a side facing away from the second template (200), and the horizontal strip portion (141) is recessed in the flow hole (110) on a side facing away from the second template (200).

9. The bottom guard plate extrusion die according to claim 5, characterized in that: The invention also includes a third template (400), which is arranged on the other side of the first template (100), and the third template (400) is provided with an inlet hole (410), one end of the inlet hole (410) is connected to the other end of the flow hole (110), and the cross section of the inlet hole (410) tends to increase along the direction of its hole axis approaching the first template (100).

10. The bottom guard plate extrusion die according to claim 1, characterized in that: The outer molded through hole (210) comprises a small hole section (211) and a large hole section (212); the small hole section (211) is connected to the large hole section (212); the inner molded strip (120) is accommodated in the small hole section (211); and the frame extrusion cavity (300) is located in the small hole section (211).

Images