Extrusion molding die and extrusion molding mechanism

Abstract

The application relates to the extrusion molding technical field and discloses an extrusion molding die and an extrusion molding mechanism. The extrusion molding die comprises a first die seat, a second die seat, a positioning pressing plate and an extrusion piece. The first die seat is configured to receive the outer bottom wall of a shell workpiece to be processed. The second die seat is arranged on one side of the first die seat along a die closing direction, the die closing direction is parallel to the thickness direction of the shell workpiece received by the first die seat, and the second die seat and the first die seat can approach each other along the die closing direction. The positioning pressing plate can move relative to the second die seat along the die closing direction, and the positioning pressing plate is configured to abut against the inner bottom wall of the shell workpiece and support the inner side wall of the shell workpiece. The extrusion piece is connected with the second die seat and is configured to press the side part towards the bottom. The molding die can improve the material utilization rate during the processing of the shell workpiece.

Description

Technical Field

[0001] This application relates to the field of automation equipment technology, and more specifically, to an extrusion molding die and an extrusion molding mechanism. Background Technology

[0002] In automated production, the machining of shell-shaped workpieces is generally carried out using cutting processes. This involves cutting grooves into the surface of sheet metal to create the desired shell shape. However, cutting processes generate a significant amount of waste and result in low material utilization, leading to material waste.

[0003] To reduce material waste, a stamping process can be used to apply pressure to thin sheets, causing them to deform and form a shell-like workpiece. However, in some cases, when the bottom wall thickness of the shell-like workpiece is required to be less than the side wall thickness, further machining of the bottom of the stamped product is still necessary, leading to a decrease in material utilization. Utility Model Content

[0004] In view of this, this application provides an extrusion molding die and an extrusion molding mechanism, which can improve the material utilization rate in the forming process of shell workpieces.

[0005] This application provides an extrusion molding die for processing a shell workpiece. The shell workpiece includes a bottom and a side portion. One side of the side portion is connected to the bottom, and the other side of the side portion extends away from the bottom along the thickness direction of the bottom. The extrusion molding die includes a first die base, a second die base, a positioning plate, and an extruder. The first die base has a receiving surface configured to receive the outer bottom wall of the shell workpiece to be processed, and the normal direction of the receiving surface is defined as the mold closing direction. The second die base is located on the side of the first die base near the receiving surface along the mold closing direction, and the second die base and the first die base can move closer to each other along the mold closing direction. The positioning plate is connected to the second die base and can move relative to the second die base along the mold closing direction. At least a portion of the positioning plate is configured to be inserted into the shell workpiece, and the positioning plate is configured to abut against the inner bottom wall of the shell workpiece and support the inner side wall of the shell workpiece. The extruder is connected to the second die base and is configured to press against the side portion towards the bottom.

[0006] When processing shell workpieces using this extrusion molding die, as the second die holder and the first die holder approach each other along the mold closing direction, the extruder can abut against the end wall of the side of the shell workpiece, so that the bottom of the shell workpiece is pressed tightly against the receiving surface. When the second die holder and the first die holder approach each other further, the extruder can press against the side towards the bottom of the shell workpiece, so that the side is subjected to pressure along the thickness direction of the bottom, thereby causing the side to compress and deform, increasing the thickness of the side. This reduces the need for cutting the bottom of the shell workpiece to reduce the bottom thickness, thereby improving the material utilization rate during the processing of the shell workpiece.

[0007] In some embodiments of this application, the extruder is provided with a limiting surface and a pressing surface. There is an accommodating gap between the limiting surface and the positioning plate for accommodating at least a portion of the side of the shell workpiece. The width of the accommodating gap is greater than the thickness of the side of the shell workpiece to be processed. The limiting surface is configured to stop the outer wall of the shell workpiece. The pressing surface is located within the accommodating gap and is configured to press against the end wall of the side away from the bottom along the mold closing direction.

[0008] When the pressing surface presses against the side of the shell workpiece, causing compression deformation, the limiting surface can stop the outer wall of the shell workpiece to limit the shape and thickness of the deformed side of the shell workpiece, thereby reducing the possibility of in-process compression deformation of the side of the shell workpiece. At the same time, the accommodating interval has a pre-positioning effect on the shell workpiece to be processed, which can improve the processing accuracy of the shell workpiece.

[0009] In some embodiments of this application, the pressing surface is inclined relative to the mold closing direction, and the pressing surface is configured as the side of the end wall of the pressing side away from the positioning pressure plate.

[0010] The side of the end wall of the pressure-bearing surface that is opposite to the positioning pressure plate causes the pressure on the outer wall of the shell workpiece to be greater than that on the inner wall, which can reduce the deformation of the inner wall of the shell workpiece. At the same time, by making the pressure on the outer wall of the shell workpiece greater, the stress area after deformation of the shell workpiece can be concentrated towards the side of the outer wall of the shell near the bottom, which can reduce the risk of defects such as cracking of the shell and facilitate further treatment of stress defects in the shell workpiece.

[0011] In some embodiments of this application, the limiting surface is provided with an avoidance notch, which penetrates the end wall of the extruder facing the first mold base along the mold closing direction.

[0012] The clearance notch can accommodate excess deformation on the side of the housing workpiece, reducing the risk of side cracking or jamming with the limiting surface.

[0013] In some embodiments of this application, a transition arc surface is connected between the limiting surface and the end wall of the extruder facing the first mold base, and the transition arc surface is configured to abut against the outer side wall of the deformed shell workpiece.

[0014] The outer wall of the shell workpiece can deform along the transition arc surface, which can reduce the risk of stress concentration at the junction of the limiting surface and the end wall of the extruder near the first mold base on the side of the shell workpiece. This can reduce the risk of defects such as cracking at the junction of the limiting surface and the end wall of the extruder.

[0015] In some embodiments of this application, the extruder has an abutment surface configured to abut against a first mold base to constrain the position of the extruder relative to the first mold base in the mold closing direction.

[0016] The abutting surface can abut against the first mold base to stop the extruder from moving relative to the housing workpiece, thereby reducing the risk of excessive deformation of the side of the housing workpiece.

[0017] In some embodiments of this application, the extrusion molding die further includes an elastic element, one end of which is connected to a positioning platen, and the other end of which is connected to a second die base or extruder. The elastic element is configured to provide an elastic force toward the receiving surface to the positioning platen.

[0018] As the second mold base approaches the first mold base, the elastic element exerts an elastic force on the positioning plate toward the bearing surface, which keeps the positioning plate in contact with the inner bottom wall of the shell workpiece, and makes the outer bottom wall of the shell workpiece press against the bearing surface, thereby reducing the risk of wear on the outer bottom wall of the shell workpiece caused by the movement of the shell workpiece relative to the first mold base.

[0019] In some embodiments of this application, the positioning plate is provided with a sliding part, and the second mold base or extrusion part is provided with a mating part, and the sliding part and the mating part slide and engage along the mold closing direction.

[0020] The sliding part and the mating part slide together, which can constrain the movement direction of the positioning pressure plate relative to the extrusion part. In contrast, it can constrain the movement direction of the extrusion part relative to the shell workpiece, so that the direction of the force received by the shell workpiece can be kept as constant as possible, thereby improving the processing accuracy of the shell workpiece.

[0021] In some embodiments of this application, the positioning plate is provided with a limiting part, and the second mold base or extrusion part is provided with a constraint part, the constraint part being configured to constrain the position of the limiting part in the mold closing direction.

[0022] The constraint part can constrain the position of the limiting part, which can reduce the risk of the sliding part disengaging from the mating part, thereby reducing the risk of the positioning pressure plate falling off.

[0023] Embodiments of this application also provide an extrusion molding mechanism for processing shell workpieces having a bottom and sides. The extrusion molding mechanism includes a drive assembly and an extrusion molding die according to any of the above embodiments. The drive assembly is connected to a first die holder and a second die holder of the extrusion molding die, and the drive assembly is configured to drive the first die holder and the second die holder to move closer to each other along the die closing direction.

[0024] This extrusion molding mechanism, by applying the aforementioned extrusion molding die, can increase the thickness of the side portion of the shell workpiece, thereby reducing the need for cutting the bottom of the shell workpiece to reduce its thickness, and thus improving the material utilization rate during the processing of the shell workpiece. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a shell workpiece provided in one embodiment of this application.

[0026] Figure 2 This is a schematic diagram of the extrusion molding mechanism provided in one embodiment of this application.

[0027] Figure 3 yes Figure 2 The diagram shows a partial cross-sectional view of the extrusion die along line AA.

[0028] Figure 4 yes Figure 3 Enlarged view at point B.

[0029] Figure 5 yes Figure 4 A schematic diagram showing the deformation on the side.

[0030] Figure 6 This is a schematic diagram of another extrusion molding mechanism provided in an embodiment of this application.

[0031] Explanation of main component symbols 100. Shell workpiece; 11. Bottom; 12. Side; 200. Extrusion molding mechanism; 21. Drive assembly; 211. Machine base; 212. Mounting bracket; 213. Drive component; 22. Extrusion molding die; 221. First die base; 2211. Receiving surface; 222. Second die base; 223. Positioning plate; 2231. Sliding part; 2232. Limiting part; 224. Elastic element; 225. Extruded part; 2251. Mating part; 2252. Constraint part; 2253. Limiting surface; 2254. Pressing surface; 2255. Accommodation interval; 2256. Clearance surface; 2257. Transition arc surface; 2258. Clearance notch; 2259. Receiving surface; Z. Mold closing direction. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0034] This application provides an extrusion molding die for processing a shell workpiece. The shell workpiece includes a bottom and a side portion. One side of the side portion is connected to the bottom, and the other side of the side portion extends away from the bottom along the thickness direction of the bottom. The extrusion molding die includes a first die base, a second die base, a positioning plate, and an extruder. The first die base has a receiving surface configured to receive the outer bottom wall of the shell workpiece to be processed, and the normal direction of the receiving surface is defined as the mold closing direction. The second die base is located on the side of the first die base near the receiving surface along the mold closing direction, and the second die base and the first die base can move closer to each other along the mold closing direction. The positioning plate is connected to the second die base and can move relative to the second die base along the mold closing direction. At least a portion of the positioning plate is configured to be inserted into the shell workpiece, and the positioning plate is configured to abut against the inner bottom wall of the shell workpiece and support the inner side wall of the shell workpiece. The extruder is connected to the second die base and is configured to press against the side portion towards the bottom.

[0035] When processing shell workpieces using this extrusion molding die, as the second die holder and the first die holder approach each other along the mold closing direction, the extruder can abut against the end wall of the side of the shell workpiece, so that the bottom of the shell workpiece is pressed tightly against the receiving surface. When the second die holder and the first die holder approach each other further, the extruder can press against the side towards the bottom of the shell workpiece, so that the side is subjected to pressure along the thickness direction of the bottom, thereby causing the side to compress and deform, increasing the thickness of the side. This reduces the need for cutting the bottom of the shell workpiece to reduce the bottom thickness, thereby improving the material utilization rate during the processing of the shell workpiece.

[0036] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0037] Reference Figure 1The housing workpiece 100 includes a bottom 11 and a side portion 12. One side of the side portion 12 is connected to the bottom 11, and the other side of the side portion 12 extends away from the bottom 11 along its thickness direction. That is, the side portion 12 of the housing workpiece 100 is perpendicular to the bottom 11. It can be understood that the side of the bottom 11 along its own thickness direction and close to the side portion 12 is the inner bottom wall of the housing workpiece 100, the side of the bottom 11 along its own thickness direction away from the inner bottom wall is the outer bottom wall of the housing workpiece 100, the side of the side portion 12 that connects to the inner bottom wall of the housing workpiece 100 is the inner side wall of the housing workpiece 100, and the side of the side portion 12 along its own thickness direction away from the inner side wall of the housing workpiece 100 is the outer side wall of the housing workpiece 100.

[0038] It is understood that the side portion 12 of the housing workpiece 100 may be in the form of a closed or semi-closed ring. In some embodiments, the side portion 12 may be in the form of a square frame; in other embodiments, the side portion 12 may be in the form of a ring or other shapes.

[0039] Currently, the shell workpiece 100 can be manufactured through processes such as cutting, bending, or stamping. Cutting offers high precision but can easily lead to material waste. The bottom 11 and side 12 of the shell workpiece 100 manufactured by bending or stamping are usually of the same thickness. When the thickness of the side 12 of the shell workpiece 100 is required to be greater than the thickness of the bottom 11, it is necessary to cut the bottom 11 of the shell workpiece 100 manufactured by bending or stamping to reduce the thickness of the bottom 11.

[0040] Reference Figure 1 and Figure 2 This application provides an extrusion molding mechanism 200, which can further process a housing workpiece 100 to increase the thickness of the side portion 12 of the housing workpiece 100. For example, for a housing workpiece 100 formed by bending or stamping, when processed by the extrusion molding mechanism 200, there is no need to cut the bottom 11 of the housing workpiece 100, and the thickness of the side portion 12 of the housing workpiece 100 can be greater than the thickness of the bottom 11, reducing material waste and thus improving material utilization.

[0041] Reference Figure 2 In some embodiments, the extrusion molding mechanism 200 includes a drive assembly 21 and an extrusion molding die 22.

[0042] In some embodiments, the drive assembly 21 includes a base 211, a mounting bracket 212, and a drive element 213, with the mounting bracket 212 connecting the drive element 213 and the base 211.

[0043] Reference Figure 2 and Figure 3In some embodiments, the extrusion molding die 22 includes a first die base 221, a second die base 222, a positioning pressure plate 223, an elastic element 224, and an extruder 225.

[0044] A first mold base 221 is disposed on and fixedly connected to the machine base 211. A receiving surface 2211 is provided on the side of the first mold base 221 facing away from the machine base 211. The receiving surface 2211 is configured to receive the outer bottom wall of the shell workpiece 100 to be processed. It is understood that the shell workpiece 100 can be placed on the receiving surface 2211, such that the outer bottom wall of the shell workpiece 100 abuts against the receiving surface 2211. At this time, the thickness direction of the bottom 11 of the shell workpiece 100 is parallel to the normal direction of the receiving surface 2211. In some embodiments, the first mold base 221 is plate-shaped, and the receiving surface 2211 is the surface of the first mold base 221 facing away from the machine base 211. In some embodiments, the first mold base 221 may be provided with an adsorption structure (not shown). For example, a negative pressure hole may be provided on the receiving surface 2211. A vacuum pump is used to create a negative pressure in the negative pressure hole so that the negative pressure hole adsorbs the outer bottom wall of the shell workpiece 100 to fix the shell workpiece 100 to the first mold base 221.

[0045] For ease of description, the normal direction of the receiving surface 2211 can be defined as the mold closing direction Z. In some embodiments, the mold closing direction Z may be parallel to the vertical direction, and the drive member 213 is located above the first mold base 221. In other embodiments, the mold closing direction Z may be inclined or perpendicular to the vertical direction.

[0046] The second mold base 222 is disposed on the side of the first mold base 221 away from the machine base 211 and connected to the drive member 213, such that the second mold base 222 is located above the first mold base 221; the drive member 213 is configured to drive the second mold base 222 toward or away from the first mold base 221 along the mold closing direction Z. In some embodiments, the drive member 213 may be a cylinder, the cylinder body of the drive member 213 is connected to the mounting bracket 212, and the piston rod of the drive member 213 is connected to the second mold base 222. In other embodiments, the drive member 213 may be a hydraulic cylinder or a linear motor, etc.

[0047] In some embodiments, the second mold base 222 is slidably connected to the mounting bracket 212 along the mold closing direction Z via a guide rod. In other embodiments, the second mold base 222 is slidably connected to the first mold base 221 along the mold closing direction Z via guide pins.

[0048] The elastic element 224 connects the positioning plate 223 to the second mold base 222, and the positioning plate 223 can move relative to the second mold base 222 along the mold closing direction Z. In some embodiments, the positioning plate 223 is disposed between the second mold base 222 and the first mold base 221. The elastic element 224 is a spring, disposed between the positioning plate 223 and the second mold base 222. One end of the elastic element 224 abuts against the positioning plate 223, and the other end of the elastic element 224 abuts against the second mold base 222. The side of the positioning plate 223 near the first mold base 221 can be inserted into the housing workpiece 100, such that the end wall of the positioning plate 223 facing the receiving surface 2211 along the mold closing direction Z abuts against the inner wall of the housing workpiece 100, and the peripheral wall of the positioning plate 223 abuts against the inner wall of the housing workpiece 100 to support the inner wall of the housing workpiece 100.

[0049] The extruder 225 is fixedly connected to the surface of the second mold base 222 along the mold closing direction Z facing the first mold base 221, and the extruder 225 is configured to abut against the bottom 11 of the housing workpiece 100. In some embodiments, the extruder 225 is annular and fixedly connected to the second mold base 222.

[0050] During the process of the driving member 213 driving the second mold base 222 to approach the first mold base 221, the elastic member 224 is compressed, causing the positioning pressure plate 223 to abut against the housing, and the pressing member 225 can abut against the end wall of the side portion 12 of the housing workpiece 100, so that the side portion 12 is subjected to pressure along the thickness direction of the bottom 11, thereby causing the side portion 12 to undergo compression deformation, increasing the thickness of the side portion 12. During the compression deformation of the side portion 12 of the housing workpiece 100, the positioning pressure plate 223 abuts against the inner bottom wall of the housing workpiece 100 and supports the inner side wall of the housing workpiece 100, which can reduce the deformation of the inner bottom wall or inner side wall of the housing workpiece 100, thereby improving the yield of the appearance of the inner side wall and inner bottom wall of the housing workpiece 100.

[0051] When the side portion 12 undergoes compression deformation, the outer side wall of the shell workpiece 100 moves toward the first mold base 221, thereby reducing the transition radius between the outer side wall and the outer bottom wall of the shell workpiece 100, which can further improve the utilization rate of materials.

[0052] In some other embodiments, the elastic element 224 may be omitted, and the positioning plate 223 may press against the housing workpiece 100 by its own weight.

[0053] Reference Figure 3 In some embodiments, the positioning plate 223 is inserted into the extruder 225 on the side opposite to the first mold base 221 along the mold closing direction Z. The extruder 225 has a guiding effect on the positioning plate 223 in the mold closing direction Z and a constraint effect in the direction perpendicular to the mold closing direction Z.

[0054] In some embodiments, the positioning plate 223 is provided with a sliding portion 2231, and the second mold base 222 or the extruder 225 is provided with a mating portion 2251. The sliding portion 2231 and the mating portion 2251 slide and engage along the mold closing direction Z. Exemplarily, the inner peripheral wall of the extruder 225 is provided with a mating portion 2251, which is groove-shaped and extends along the mold closing direction Z, penetrating the end wall of the extruder 225 facing the second mold base 222 along the mold closing direction Z. The peripheral wall of the positioning plate 223 is provided with a sliding portion 2231, which is block-shaped and inserted into the mating portion 2251, sliding and engaging along the mold closing direction Z. In other embodiments, the sliding portion 2231 may be column-shaped extending along the mold closing direction Z, and the mating portion 2251 may be hole-shaped.

[0055] The sliding part 2231 and the mating part 2251 slide together, which can constrain the movement direction of the positioning plate 223 relative to the extruder 225. In contrast, it can constrain the movement direction of the extruder 225 relative to the housing workpiece 100, so that the direction of the force received by the housing workpiece 100 can be kept as constant as possible, thereby improving the processing accuracy of the housing workpiece 100.

[0056] In some embodiments, the positioning plate 223 is provided with a limiting portion 2232, and the second mold base 222 or the extrusion member 225 is provided with a constraint portion 2252. The constraint portion 2252 is configured to constrain the position of the limiting portion 2232 in the mold closing direction Z. Exemplarily, the inner peripheral wall of the extrusion member 225 is provided with a constraint portion 2252, which is groove-shaped and is opened along the mold closing direction Z and passes through the end wall of the extrusion member 225 facing the second mold base 222 in the mold closing direction Z; the peripheral wall of the positioning plate 223 is provided with a limiting portion 2232, which is block-shaped and is inserted into the constraint portion 2252 and can slide within the constraint portion 2252 along the mold closing direction Z. The inner end wall of the constraint portion 2252, located near the first mold base 221 along the mold closing direction Z, can constrain the position of the limiting portion 2232, reducing the risk of the sliding portion 2231 disengaging from the mating portion 2251, thereby reducing the risk of the positioning plate 223 falling off. In some embodiments, the limiting portion 2232 and the constraint portion 2252 slide together along the mold closing direction Z, which can further improve the stability of the sliding of the positioning plate 223 relative to the second mold base 222.

[0057] Reference Figure 4 and Figure 5In some embodiments, the extruder 225 is provided with a limiting surface 2253 and a pressing surface 2254. A receiving interval 2255 is provided between the limiting surface 2253 and the positioning plate 223 to accommodate at least a portion of the side portion 12 of the housing workpiece 100. The width of the receiving interval 2255 is greater than the thickness of the side portion 12 of the housing workpiece 100 to be processed. The limiting surface 2253 is configured to stop the outer wall of the housing workpiece 100. The pressing surface 2254 is disposed within the receiving interval 2255 and is configured to abut against the end wall of the side portion 12 at the end away from the bottom 11 along the thickness direction of the bottom 11. For example, the inner peripheral wall of the extruder 225 near the first mold base 221 is provided with an annular groove, which penetrates the end wall of the extruder 225 facing the first mold base 221 along the mold closing direction Z. The limiting surface 2253 is the inner peripheral wall of the annular groove, and the pressing surface 2254 is the bottom wall of the annular groove. In some embodiments, the limiting surface 2253 is parallel to the mold closing direction Z, so that the outer peripheral wall of the deformed shell workpiece 100 remains as flat as possible.

[0058] During the process of the pressing surface 2254 pressing against the end wall of the side portion 12 and causing the side portion 12 to undergo compression deformation, the outer wall of the shell workpiece 100 moves towards the limiting surface 2253 along the thickness direction of the side portion 12 and fits against the limiting surface 2253. The limiting surface 2253 can stop the outer wall of the shell workpiece 100 to limit the shape and thickness of the side portion 12 of the deformed shell workpiece 100, thereby reducing the possibility of excessive compression deformation of the side portion 12 of the shell workpiece 100. The accommodating interval 2255 has a pre-positioning effect on the shell workpiece 100 to be processed, which can improve the processing accuracy of the shell workpiece 100.

[0059] In some embodiments, the pressing surface 2254 is inclined relative to the mold closing direction Z, and the pressing surface 2254 is configured to press against the side of the end wall of the side portion 12 opposite to the positioning pressure plate 223. It is understood that the angle between the pressing surface 2254 and the limiting surface 2253 is an obtuse angle. By making the pressing surface 2254 press against the side of the end wall of the side portion 12 opposite to the positioning pressure plate 223, the pressure on the outer wall of the housing workpiece 100 is greater than the pressure on the inner wall, which reduces the deformation of the inner wall of the housing workpiece 100. Simultaneously, by making the pressure on the outer wall of the housing workpiece 100 greater, the stress area after deformation of the housing workpiece 100 can be concentrated towards the side of the outer wall of the housing portion 12 near the bottom 11, facilitating further treatment of stress defects in the housing workpiece 100. In addition, by tilting the pressure surface 2254, the side portion 12 can be subjected to a force along its own thickness direction, thereby allowing the inner wall of the housing workpiece 100 to fully fit against the peripheral wall of the positioning pressure plate 223, thus improving the internal dimensional accuracy of the housing workpiece 100.

[0060] In some embodiments, a clearance surface 2256 and a transition arc surface 2257 are provided between the limiting surface 2253 and the end wall of the extruder 225 at one end facing the first mold base 221 along the mold closing direction Z. The transition arc surface 2257 connects the limiting surface 2253 and the clearance surface 2256, and the connecting surface is connected to the end wall of the corresponding end of the extruder 225. In some embodiments, the clearance surface 2256 is a plane, the clearance surface 2256 is inclined relative to the end wall of the corresponding end of the extruder 225, and the side of the clearance surface 2256 near the transition arc surface 2257 is inclined toward the pressing surface 2254.

[0061] During the compression deformation of the side portion 12, the transition arc surface 2257 can abut against the outer wall of the deformed shell workpiece 100, allowing the outer wall of the shell workpiece 100 to deform slowly along the transition arc surface 2257, thereby reducing the risk of defects such as cracking in the side portion 12. Simultaneously, the clearance surface 2256 is inclined, causing the extruder 225 to form a clearance notch 2258 at the clearance surface 2256. It can be understood that the clearance notch 2258 penetrates the end wall of the extruder 225 along the mold closing direction Z towards the first mold base 221. The clearance notch 2258 can accommodate excess deformation of the side portion 12 of the shell workpiece 100, reducing the risk of cracking or jamming with the limiting surface 2253 in the side portion 12.

[0062] In some other embodiments, the clearance surface 2256 may be omitted, and the extrusion member 225 may form a clearance notch 2258 at the transition arc surface 2257.

[0063] In some other embodiments, the transition arc surface 2257 may be omitted, and the inclined clearance surface 2256 may slow down the deformation speed of the side portion 12 and reduce the risk of defects such as cracking in the side portion 12.

[0064] It is understandable that the excess deformed part of the side 12 that is squeezed into the clearance notch 2258 is a stress concentration area, and this excess deformed part can be removed by cutting or other means.

[0065] In some embodiments, the extruder 225 has an abutment surface 2259 configured to abut against the first mold base 221 to constrain the position of the extruder 225 relative to the first mold base 221 in the mold closing direction Z. Exemplarily, the abutment surface 2259 is the end wall of the extruder 225 facing the first mold base 221 along the mold closing direction Z. The abutment surface 2259 abuts against the first mold base 221 to stop the extruder 225 from moving relative to the housing workpiece 100, thereby reducing the risk of excessive deformation of the side portion 12 of the housing workpiece 100.

[0066] Reference Figure 6In some embodiments, the side of the second mold base 222 opposite to the first mold base 221 along the mold closing direction Z can be fixedly connected to the machine base 211, and the first mold base 221 can be fixedly connected to the drive member 213; the mold closing direction Z can be parallel to the vertical direction, and the first mold base 221 is located above the second mold base 222.

[0067] In some embodiments, the housing workpiece 100 may be upside down on the positioning plate 223 (see Figure 3 On the housing workpiece 100, at least a portion of the side portion 12 is inserted into the receiving interval 2255, at which time the elastic member 224 (see...) Figure 3 The positioning plate 223 can support the positioning plate 223 so that the positioning plate 223 supports the inner bottom wall of the shell workpiece 100; then, the driving member 213 drives the first mold base 221 to approach the second mold base 222 so that the bearing surface 2211 of the first mold base 221 abuts against the outer bottom wall of the shell workpiece 100, so that the shell workpiece 100 and the positioning plate 223 can move toward the second mold base 222. In contrast, the extrusion member 225 moves toward the first mold base 221 so that the side 12 of the shell workpiece 100 is extruded and undergoes compression deformation.

[0068] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. An extrusion molding die for processing a housing workpiece, the housing workpiece comprising a bottom and a side portion, one side portion being connected to the bottom, and the other side portion extending away from the bottom along the thickness direction of the bottom; characterized in that, The extrusion molding die includes: A first mold base is provided with a receiving surface, which is configured to receive the outer bottom wall of the shell workpiece to be processed, and the normal direction of the receiving surface is defined as the mold closing direction; The second mold base is disposed on the side of the first mold base near the receiving surface along the mold closing direction, and the second mold base and the first mold base can move closer to each other along the mold closing direction; A positioning plate is connected to the second mold base and is movable relative to the second mold base along the mold closing direction. At least a portion of the positioning plate is configured to be inserted into the housing workpiece, and the positioning plate is configured to abut against the inner bottom wall of the housing workpiece and support the inner side wall of the housing workpiece. An extruder connected to the second mold base, the extruder being configured to press against the side toward the bottom.

2. The extrusion molding die according to claim 1, characterized in that, The extrusion member has a limiting surface and a pressing surface. There is an accommodating gap between the limiting surface and the positioning plate to accommodate at least a portion of the side portion of the shell workpiece. The width of the accommodating gap is greater than the thickness of the side portion of the shell workpiece to be processed. The limiting surface is configured to block the outer wall of the shell workpiece. The pressing surface is located within the accommodating gap and is configured to press against the end wall of the side portion away from the bottom along the mold closing direction.

3. The extrusion molding die according to claim 2, characterized in that, The pressing surface is inclined relative to the mold closing direction, and the pressing surface is configured to press against the side of the end wall of the side portion away from the positioning pressure plate.

4. The extrusion molding die according to claim 2, characterized in that, The limiting surface is provided with an avoidance notch, which penetrates the end wall of the extruder facing the first mold base along the mold closing direction.

5. The extrusion molding die according to claim 2, characterized in that, A transition arc surface connects the limiting surface and the end wall of the extruder facing the first mold base, and the transition arc surface is configured to abut against the outer side wall of the deformed shell workpiece.

6. The extrusion molding die according to claim 1, characterized in that, The extruder has an abutment surface configured to abut against the first mold base to constrain the position of the extruder relative to the first mold base in the mold closing direction.

7. The extrusion molding die according to claim 1, characterized in that, The extrusion molding die further includes an elastic element, one end of which is connected to the positioning platen, and the other end of which is connected to the second mold base or the extruder. The elastic element is configured to provide an elastic force to the positioning platen toward the receiving surface.

8. The extrusion molding die according to claim 7, characterized in that, The positioning plate is provided with a sliding part, and the second mold base or the extrusion part is provided with a mating part. The sliding part and the mating part slide and engage along the mold closing direction.

9. The extrusion molding die according to claim 7, characterized in that, The positioning plate is provided with a limiting part, and the second mold base or the extrusion part is provided with a constraint part. The constraint part is configured to constrain the position of the limiting part in the mold closing direction.

10. An extrusion molding mechanism for processing shell workpieces having a bottom and sides, characterized in that: The extrusion molding mechanism includes a drive assembly and an extrusion molding die as described in any one of claims 1 to 9, the drive assembly connecting the first die holder and the second die holder of the extrusion molding die, and the drive assembly being configured to drive the first die holder and the second die holder to move closer to each other along the mold closing direction.

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