Molding die assembly

Abstract

The application discloses a forming die assembly, which comprises a base, a pressing core arranged on the base and adapted to carry a workpiece to be processed, an upper die selectively movable towards the base and adapted to press the workpiece, and a first pressing piece and a second pressing piece arranged on the base and located at two sides of the pressing core respectively and adapted to press the workpiece when the upper die moves towards the base. The forming die assembly of the application realizes that the first pressing piece and the second pressing piece can cooperate with the upper die and the pressing core to jointly form the workpiece to be processed, thereby reducing the stamping process and the number of dies of the workpiece with a negative angle, and reducing the die modification amount caused by adjusting the precision of the workpiece to be processed, saving the manufacturing cost and improving the processing efficiency.

Description

Molding mold components Technical Field

[0001] This invention relates to the field of molding die technology, and in particular to a molding die assembly. Background Technology

[0002] Existing forming dies for sheet metal parts such as car bodies and chassis generally consist of forming dies composed of forming punches, forming dies, and pressure blanks. The processing is basically as follows: the pressure blank, under the pressure of an elastic element, acts on the part, causing the part to be formed through the mutual contact of the forming punch and forming die. Furthermore, for forming dies of parts with negative angles, the forming punch, forming die, or pressure blank is usually transferred to a push-pull, rotary, or other wedge mechanism, or to a rocking mechanism, to complete the part processing.

[0003] In related technologies, when adjusting the precision of parts in forming molds, it is necessary to repair or process both the forming punch and the forming die, resulting in a large workload for mold modification and high economic and time costs. Furthermore, for parts with negative angles, forming molds need to introduce a wedge structure or a rocking mechanism for processing. However, the complex structure of the wedge structure and rocking mechanism makes it difficult to adjust and align the forming punch and the forming die within the wedge or rocking mechanism, thus increasing tooling and manufacturing costs. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of this invention is to provide a forming die assembly. The forming die assembly according to this invention, by employing a first extruder and a second extruder to extrude the workpiece, enables the first extruder and the second extruder to cooperate with the upper die and the pressure core to jointly form the workpiece. This reduces the stamping process and the number of dies required for parts with negative angles, and also reduces the amount of die modification required to adjust the precision of the workpiece, thereby saving manufacturing costs and improving processing efficiency.

[0005] The molding die assembly according to the present invention includes: a base; a pressure core disposed on the base and adapted to carry a workpiece to be processed; an upper die selectively movable toward the base and pressing the workpiece to be processed; a first extruder and a second extruder respectively disposed on the base and located on both sides of the pressure core, the first extruder and the second extruder adapted to press the workpiece to be processed when the upper die moves toward the base.

[0006] In this invention, the forming mold assembly comprises a base, a pressure core, an upper mold, a first extruder, and a second extruder. The first and second extruders are respectively positioned on the base and located on both sides of the pressure core, making the first and second extruders suitable for extruding the workpiece when the upper mold moves toward the base. Thus, when the upper mold moves toward the base to extrude the workpiece, the workpiece can be formed under the combined action of the upper mold, the first extruder, the second extruder, and the pressure core. In contrast to related technologies, when adjusting the precision of forming dies, both the forming punch and the forming die need to be repaired or processed, resulting in a large workload and high economic and time costs. Furthermore, for parts with negative angles, the need to introduce a wedge structure or a rocking mechanism for processing makes the fitting and adjustment of the forming punch and die difficult, increasing tooling and manufacturing costs. This invention eliminates the forming die, reducing the number of dies used. Instead, it uses a first extrusion piece, a second extrusion piece, and an upper die in conjunction, allowing only the upper die to be processed and adjusted when adjusting the precision of the workpiece, thus reducing the amount of die modification and effectively saving economic and time costs. In addition, for workpieces with negative angles, the forming die assembly of this invention avoids the difficulty of fitting and adjusting the forming punch and die in a wedge structure or rocking mechanism. Instead, it provides a forming structure for workpieces with negative angles by having a first extrusion piece, a second extrusion piece, and an upper die in conjunction, thereby reducing production steps and the number of dies, and thus saving on die development costs and stamping costs during production.

[0007] According to one embodiment of the present invention, the first extruder and the second extruder are movably disposed on the base, and the first extruder and the second extruder are respectively formed with a first extrusion portion and a second extrusion portion on the side facing each other; wherein the first extruder and the second extruder are adapted to move away from each other when the upper die moves toward the base, and the first extrusion portion and the second extrusion portion extrude the workpiece to be processed.

[0008] According to one embodiment of the present invention, one end of the first extruder is hinged to the base, and the other end of the first extruder is rotatably provided with the first extrusion part; one end of the second extruder is hinged to the base, and the other end of the second extruder is rotatably provided with the second extrusion part.

[0009] According to one embodiment of the present invention, the molding die assembly further includes: a first elastic member connected between the base and the other end of the first extruder; and a second elastic member connected between the base and the other end of the second extruder.

[0010] According to one embodiment of the present invention, the first extrusion part and the second extrusion part are respectively configured as flexible rollers.

[0011] According to one embodiment of the present invention, the upper mold includes: an upper mold base, which is selectively movable toward or away from the base, the upper mold base forming a first connecting rod and a second connecting rod; a cantilever, one end of which is pivotally connected to the free end of the first connecting rod; a punch, which is disposed on the cantilever and adapted to press the workpiece; wherein the other end of the cantilever is adapted to abut against the free end of the second connecting rod when the punch presses the workpiece; and the other end of the cantilever is adapted to separate from the free end of the second connecting rod when the upper mold base moves away from the base.

[0012] According to one embodiment of the present invention, the free end of the first connecting rod is formed with a groove away from the recess of the base, and one end of the cantilever is pivotally received in the groove and spaced apart from the bottom wall of the groove.

[0013] According to one embodiment of the present invention, the free end of the second connecting rod is formed with a snap-fit ​​portion whose cross-section gradually decreases in the extension direction, and the other end of the cantilever is formed with a snap-fit ​​groove suitable for snap-fitting with the snap-fit ​​portion.

[0014] According to one embodiment of the present invention, the pivot axis of the cantilever is orthogonal to the moving direction of the upper mold base.

[0015] According to one embodiment of the present invention, the pressing core includes: a bearing portion, the bearing portion and the base being spaced apart in the thickness direction; and a third elastic member, the third elastic member being disposed between the bearing portion and the base.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 is a schematic diagram of a molding die assembly according to an embodiment of the present invention;

[0019] Figure 2 is a partial structural schematic diagram of a molding die assembly according to an embodiment of the present invention;

[0020] Figure 3 is a cross-sectional view of the internal components of a molding die assembly according to an embodiment of the present invention;

[0021] Figure 4 is a schematic diagram of the upper mold when the snap-fit ​​groove and the snap-fit ​​part are snapped together according to an embodiment of the present invention;

[0022] Figure 5 is a schematic diagram of the upper mold and the workpiece to be processed when the snap-fit ​​groove and the snap-fit ​​part are separated according to an embodiment of the present invention.

[0023] Figure 6 is a magnified view of part A in Figure 5;

[0024] Figure 7 is a schematic diagram of the cooperation between the base, the pressure core, and the positioning plate according to an embodiment of the present invention;

[0025] Figure 8 is a schematic diagram of the structure of the first extrusion member, the first elastic member, and the base plate according to an embodiment of the present invention.

[0026] Figure label:

[0027] Molding mold assembly 1, part to be processed 2;

[0028] Base 11;

[0029] Pressure core 12, bearing part 121, third elastic element 122;

[0030] Upper mold 13, upper mold base 131, first connecting rod 132, second connecting rod 133, snap-fit ​​part 1331, cantilever 134, guide pin 1341, punch 135, rotating shaft 136, stop screw 137.

[0031] First extrusion component 14, first extrusion section 141;

[0032] Second extrusion member 15, second extrusion section 151;

[0033] First elastic element 16, second elastic element 17, base plate 18, elongated hole 181, first side plate 191, second side plate 192, positioning plate 20. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] Existing forming dies for sheet metal parts such as car bodies and chassis generally consist of forming dies composed of forming punches, forming dies, and pressure blanks. The processing is basically as follows: the pressure blank, under the pressure of an elastic element, acts on the part, causing the part to be formed through the mutual contact of the forming punch and forming die. Furthermore, for forming dies of parts with negative angles, the forming punch, forming die, or pressure blank is usually transferred to a push-pull, rotary, or other wedge mechanism, or to a rocking mechanism, to complete the part processing.

[0036] In related technologies, when adjusting the precision of parts in forming molds, it is necessary to repair or process both the forming punch and the forming die, resulting in a large workload for mold modification and high economic and time costs. Furthermore, for parts with negative angles, forming molds need to introduce a wedge structure or a rocking mechanism for processing. However, the complex structure of the wedge structure and rocking mechanism makes it difficult to adjust and align the forming punch and the forming die within the wedge or rocking mechanism, thus increasing tooling and manufacturing costs.

[0037] The molding die assembly 1 according to an embodiment of the present invention will now be described with reference to Figures 1-8.

[0038] As shown in Figures 1, 3 and 4, the molding die assembly 1 according to the present invention includes a base 11, a pressing core 12, an upper die 13, a first extruder 14 and a second extruder 15. The base 11 provides mounting positions for some other components in the molding die assembly 1 and supports, fixes, and protects them. The pressure core 12 is disposed on the base 11 and is adapted to carry the workpiece 2 to be processed so that the molding die assembly 1 can process the workpiece 2. The upper die 13 can selectively move toward the base 11 and extrude the workpiece 2. The upper die 13 can cooperate with the pressure core 12 to extrude the workpiece 2 into a preset shape. The first extruder 14 and the second extruder 15 are respectively disposed on the base 11 and are located on both sides of the pressure core 12. The first extruder 14 and the second extruder 15 are adapted to extrude the workpiece 2 when the upper die 13 moves toward the base 11, so that the workpiece 2 can be processed and formed under the combined action of the pressure core 12, the first extruder 14, the second extruder 15, and the upper die 13.

[0039] In this invention, the forming mold assembly 1 is provided with a base 11, a pressure core 12, an upper mold 13, a first extruder 14, and a second extruder 15. The first extruder 14 and the second extruder 15 are respectively disposed on the base 11 and located on both sides of the pressure core 12, so that the first extruder 14 and the second extruder 15 are adapted to extrude the workpiece 2 when the upper mold 13 moves toward the base 11. Thus, when the upper mold 13 moves toward the base 11 to extrude the workpiece 2, the workpiece 2 can be processed and formed under the combined action of the upper mold 13, the first extruder 14, the second extruder 15, and the pressure core 12. In contrast to related technologies, when adjusting the precision of parts in forming dies, both the forming punch and the forming die need to be repaired or processed, resulting in a large amount of modification work and high economic and time costs. Furthermore, for parts with negative angles, the need to introduce a wedge structure or a rocking mechanism for processing makes it difficult to adjust and connect the forming punch and the forming die, increasing tooling and manufacturing costs. In this invention, the forming die is eliminated, reducing the use of dies. Instead, the first extrusion part 14 and the second extrusion part 15 are used in conjunction with the upper die 13. This allows the upper die 13 to be processed and repaired separately when adjusting the precision of the workpiece 2, thereby reducing the amount of die modification and processing and effectively saving economic and time costs. In addition, for the workpiece 2 with a negative angle, the forming mold assembly 1 of the present invention avoids the difficulty of matching and adjusting the forming punch and forming die in the wedge structure or the rocking mechanism, and provides a forming structure in which the first extrusion part 14, the second extrusion part 15 and the upper die 13 cooperate for the workpiece 2 with a negative angle, thereby reducing the number of production steps and molds, and thus saving mold development costs and stamping costs in the production process.

[0040] Furthermore, in a specific embodiment of the present invention, the upper mold 13 and the base 11 are respectively fixed on a machine tool, and a movable slider is provided on the machine tool. The upper mold 13 is connected to the slider, so that the upper mold 13 can move under the drive of the slider to realize the normal operation of the molding die assembly 1.

[0041] According to one embodiment of the present invention, a first extruder 14 and a second extruder 15 are respectively disposed on a base 11, and the first extruder 14 and the second extruder 15 are movable relative to the base 11. A first extrusion portion 141 and a second extrusion portion 151 are respectively formed on the side of the first extruder 14 and the second extrusion portion 151 facing each other. The first extrusion portion 141 and the second extrusion portion 151 can contact the workpiece 2 to be processed carried on the pressure core 12. The first extruder 14 and the second extruder 15 are adapted to move away from each other when the upper die 13 moves toward the base 11, so that the first extrusion portion 141 and the second extrusion portion 151 extrude the workpiece 2 to be processed, so as to realize the forming of the workpiece 2 by the upper die 13 and the pressure core 12. By movably mounting the first extruder 14 and the second extruder 15 on the base 11, and forming a first extrusion portion 141 and a second extrusion portion 151 on the side of the first extruder 14 and the second extruder 15 facing each other, when the upper die 13 moves toward the base 11 to extrude the workpiece 2, the first extruder 14 and the second extruder 15 can move away from each other. At this time, the first extrusion portion 141 and the second extrusion portion 151 located on both sides of the pressure core 12 can apply pressure to the workpiece 2, so that the workpiece 2 is continuously pressed against at least part of the outer surface of the upper die 13. Finally, the upper die 13 and the pressure core 12 can cooperate to form the workpiece 2. The forming process is convenient and efficient, thereby improving the working performance of the forming mold assembly 1.

[0042] According to one embodiment of the present invention, one end of the first extruder 14 is hinged to the base 11, and the other end of the first extruder 14 is rotatably provided with a first extrusion portion 141, so that the first extruder 14 can rotate relative to the base 11, and the first extrusion portion 141 can rotate relative to the first extruder 14; one end of the second extruder 15 is hinged to the base 11, and the other end of the second extruder 15 is rotatably provided with a second extrusion portion 151, so that the second extruder 15 can rotate relative to the base 11, and the second extrusion portion 151 can rotate relative to the second extruder 15. By hingedly connecting one end of the first extruder 14 and the second extruder 15 to the base 11, and rotatably providing the other ends of the first extruder 14 and the second extruder 15 with the first extrusion portion 141 and the second extrusion portion 151 respectively, when the upper die 13 moves toward the base 11 to extrude the workpiece 2, under the force of the upper die 13, one end of the first extruder 14 and the second extruder 15 can rotate relative to the base 11, so that the first extrusion portion 141 located at the other end of the first extruder 14 and the second extrusion portion 151 located at the other end of the second extruder 15 can move away from each other. Simultaneously, as the upper die 13 moves toward the base 11 to extrude the workpiece 2, one end of the first extruder 14 and the second extruder 15 can rotate relative to the base 11. As the mold 13 continues to move closer to the base 11, the upper mold 13 can gradually move between the first extrusion part 141 and the second extrusion part 151. At this time, the first extrusion part 141 and the second extrusion part 151 rotate relative to the first extrusion part 14 and the second extrusion part 15 under the force of the upper mold 13, thereby enabling the first extrusion part 141 and the second extrusion part 151 to apply pressure to the workpiece 2, so that the workpiece 2 can gradually adhere to at least part of the outer surface of the upper mold 13, ensuring that the upper mold 13 and the pressure core 12 can better shape the workpiece 2, thereby optimizing the molding quality and efficiency of the molding die assembly 1 for the workpiece 2.

[0043] Furthermore, in a specific embodiment of the present invention, the molding die assembly 1 further includes a base plate 18 and fasteners as shown in Figures 1-3. The base plate 18 is disposed on the base 11. One end of the first extruder 14 and the second extruder 15 are respectively hinged to the base plate 18. An elongated hole 181 is formed on the base plate 18, which is through in the thickness direction and suitable for cooperating with the fastener. The fastener can be selectively moved in the elongated hole 181 to realize that the base plate 18 is movably disposed on the base 11. Thus, the cooperation position and angle between the first extruder 14, the second extruder 15 and the pressure core 12 and the upper die 13 can be easily changed, thereby optimizing the working performance of the molding die assembly 1.

[0044] In another specific embodiment of the present invention, the first extrusion member 14 further includes a first rotating seat and a first rotating shaft, and the second extrusion member 15 further includes a second rotating seat and a second rotating shaft. The first extrusion member 14 and the base 11 are hingedly connected through the first rotating seat and the first rotating shaft, and the second extrusion member 15 and the base 11 are hingedly connected through the second rotating seat and the second rotating shaft.

[0045] According to one embodiment of the present invention, the molding die assembly 1 further includes a first elastic element 16 and a second elastic element 17. In this embodiment, the first elastic element 16 is connected between the base 11 and the other end of the first extruder 14; in this embodiment, the second elastic element 17 is connected between the base 11 and the other end of the second extruder 15. The first elastic element 16 and the second elastic element 17 can provide elastic support for the first extruder 14 and the second extruder 15, respectively. Specifically, when the upper die 13 moves toward the base 11 to extrude the workpiece 2, under the force of the upper die 13, the first extruder 14 and the second extruder 15 rotate away from each other and compress the corresponding first elastic element 16 and the second elastic element 17. At this time, the first elastic element 16 and the second elastic element 17 generate reaction forces on the other end of the first extruder 14 and the second extruder 15, respectively, so that the first extrusion part 141 and the second extrusion part 151 can extrude the workpiece 2, respectively. Therefore, by setting the first elastic element 16 and the second elastic element 17, the first elastic element 16 and the second elastic element 17 can respectively generate reaction forces on the first extrusion element 14 and the second extrusion element 15, so that the first extrusion part 141 and the second extrusion part 151 can respectively extrude the workpiece 2 to be processed, so as to continuously press the surface of the workpiece 2 to be processed against the surface contour of the upper mold 13, thereby ensuring that the forming mold assembly 1 can smoothly process the workpiece 2 to be processed and realize the forming of the workpiece 2.

[0046] Furthermore, in one specific embodiment of the present invention, the first elastic element 16 and the second elastic element 17 are respectively constructed as flat wire heavy-duty springs. Since flat wire heavy-duty springs have the advantages of good elasticity, strong fatigue resistance, uniform spring force distribution, and convenient installation, constructing the first elastic element 16 and the second elastic element 17 as flat wire heavy-duty springs is beneficial to improving the working reliability and service life of the molding die assembly 1, and also improves the assembly efficiency and maintenance convenience of the molding die assembly 1.

[0047] In another specific embodiment of the present invention, the molding die assembly 1 further includes a first side plate 191 and a second side plate 192. The first side plate 191 and the second side plate 192 are respectively disposed on at least a portion of the outer periphery of the base 11, and the extending directions of the first side plate 191 and the second side plate 192 are orthogonal. The first side plate 191, the second side plate 192 and the base 11 together define a receiving cavity suitable for accommodating the pressing core 12, the first extruder 14 and the second extruder 15. One end of the first elastic member 16 and one end of the second elastic member 17 are respectively connected to the first side plate 191, and the other ends of the first elastic member 16 and the second elastic member 17 are respectively connected to the other ends of the first extruder 14 and the second extruder 15, so as to ensure that the first elastic member 16 and the second elastic member 17 can provide good elastic support for the first extruder 14 and the second extruder 15, respectively.

[0048] According to one embodiment of the present invention, the first extrusion part 141 and the second extrusion part 151 are respectively configured as flexible rollers. By configuring the first extrusion part 141 and the second extrusion part 151 as flexible rollers, on the one hand, the outer surfaces of the first extrusion part 141 and the second extrusion part 151 are configured as flexible surfaces, so that when the first extrusion part 141 and the second extrusion part 151 rotate and extrude the workpiece 2, the first extrusion part 141 and the second extrusion part 151 will not scratch the outer surface of the workpiece 2, thereby effectively protecting the surface integrity of the workpiece 2 and improving the molding quality of the workpiece 2; on the other hand, by configuring the first extrusion part 141 and the second extrusion part 151 as flexible rollers, the elastic deformation capability of the first extrusion part 141 and the second extrusion part 151 is increased, thereby enhancing the impact resistance of the first extrusion part 14 and the second extrusion part 15, and improving the working reliability and safety of the molding die assembly 1.

[0049] Furthermore, in one specific embodiment of the present invention, the first extrusion section 141 and the second extrusion section 151 are respectively constructed as rubber rollers. Since rubber rollers have good elasticity, high load-bearing capacity, and low cost, constructing the first extrusion section 141 and the second extrusion section 151 as rubber rollers helps to further improve the forming quality of the workpiece 2 and enhance the working reliability and service life of the first extrusion section 14 and the second extrusion section 15.

[0050] According to one embodiment of the present invention, the upper mold 13 includes an upper mold base 131, a cantilever 134, and a punch 135. In this embodiment, the upper mold base 131 can selectively move toward or away from the base 11, and the upper mold base 131 forms a first connecting rod 132 and a second connecting rod 133; in this embodiment, one end of the cantilever 134 is pivotally connected to the free end of the first connecting rod 132, and the cantilever 134 can rotate around the free end of the first connecting rod 132; in this embodiment, the punch 135 is disposed on the cantilever 134 and is adapted to press the workpiece 2 to be processed. When the cantilever 134 rotates relative to the free end of the first connecting rod 132, it can drive the punch 135 to rotate synchronously relative to the free end of the first connecting rod 132; wherein, the other end of the cantilever 134 is adapted to abut against the free end of the second connecting rod 133 when the punch 135 presses the workpiece 2 to be processed; the other end of the cantilever 134 is adapted to separate from the free end of the second connecting rod 133 when the upper mold base 131 moves away from the base 11. By setting up an upper mold base 131, a cantilever 134, and a punch 135, one end of the cantilever 134 is pivotally connected to the free end of the first connecting rod 132, and the punch 135 is set on the cantilever 134. This allows the cantilever 134 and the punch 135 to move towards or away from the base 11 when the upper mold base 131 moves toward or away from the base 11. With the cooperation of the first extrusion piece 14, the second extrusion piece 15, and the pressure core 12, the cantilever 134 can abut or separate from the free end of the second connecting rod 133. Thus, the punch 135 can form the workpiece 2 and carry it away from the pressure core 12, thereby realizing the forming and output of the workpiece 2.

[0051] The process of forming the workpiece 2 according to the above-mentioned forming mold assembly 1 is as follows: First, the workpiece 2 is placed on the pressure core 12. Initially, the cantilever 134 is separated from the free end of the second connecting rod 133 under the gravity of itself and the punch 135. At this time, the upper mold base 131 moves towards the base 11 and drives the cantilever 134 and the punch 135 to move towards the base 11. When the punch 135 moves to contact the workpiece 2, under the force of the pressure core 12 and the base 11 on the workpiece 2 and the punch 135, the punch 135 and the cantilever 134 begin to rotate. Until the other end of the cantilever 134 abuts against the free end of the second connecting rod 133, the workpiece 2 begins to fit against the surface of the punch 135 and enters the pressing state. As the upper die holder 131 continues to move toward the base 11, the punch 135 continues to move toward the base 11 and exerts pressure on the first extrusion part 141 and the second extrusion part 151 on both sides of the pressing core 12, causing the first extrusion part 141 and the second extrusion part 151 to rotate around their own pivot axis. At the same time, the first extrusion part 14 and the second extrusion part 15 also begin to move away from each other to ensure that the punch 135 can continue to move toward the base 11. The first extrusion section 141 and the second extrusion section 151 can move away from each other to compress the first elastic element 16 and the second elastic element 17 respectively. As a result, the first elastic element 16 and the second elastic element 17 will generate reaction forces on the first extrusion section 14 and the second extrusion section 15 respectively, so that the first extrusion section 141 and the second extrusion section 151 can extrude the workpiece 2 to be processed. The workpiece 2 to be processed is pressed and continuously pressed against the surface of the punch 135 until it is formed.

[0052] The process of forming the workpiece 2 and then ejecting it according to the above-mentioned forming mold assembly 1 is as follows: After the workpiece 2 is extruded and formed on the pressure core 12 by the punch 135, the upper mold base 131 moves away from the base 11 and drives the cantilever 134 and the punch 135 to move away from the base 11. During this process, the first extrusion part 141 and the second extrusion part 151 will rotate in the opposite direction to the rotation during the forming process of the workpiece 2. At the same time, the first extrusion part 14 and the second extrusion part 15 will move closer to each other under the restoring force of the first elastic element 16 and the second elastic element 17, so that the first extrusion part 141 and the second extrusion part 151 can maintain the pressure on the workpiece 2 to ensure that the workpiece 2 is formed. The workpiece 2 and the punch 135 are kept in contact. The movement of the punch 135 will cause the workpiece 2 to move together until the workpiece 2 is separated from the pressure core 12. Finally, when the punch 135, carrying the formed workpiece 2, separates from the pressure core 12, the first extrusion part 141 and the second extrusion part 151, under the gravity of the cantilever 134, the punch 135 and the formed workpiece 2, the other end of the cantilever 134 will separate from the free end of the second connecting rod 133. Thus, the formed workpiece 2 can slide out or be taken out from the other end of the cantilever 134 under its own gravity, thereby completing the output of the formed workpiece 2 and improving the ease of operation of outputting the workpiece.

[0053] If the dimensions of the workpiece 2 after molding are removed, and adjustments are needed due to deviations in shape and position, this invention only requires adjustments to the punch 135. The first extrusion part 141 and the second extrusion part 151, under the reaction force of the first elastic member 16 and the second elastic member 17, can still ensure that the workpiece 2 fits well with the modified punch 135 contour. This improves the adaptability of the molding die assembly 1 to the modification of the punch 135, enhances the convenience and efficiency of further adjusting the dimensions of the workpiece 2, and saves economic costs.

[0054] Furthermore, in one specific embodiment of the present invention, a guide pin 1341 is provided on the cantilever 134. The guide pin 1341 is constructed as two pins located on both sides of the punch 135 and extending towards the base 11. The pressure core 12 has a mating hole suitable for engaging with the guide pin 1341. The guide pin 1341 can be received in the mating hole to guide the engagement of the upper die 13, the pressure core 12, and the workpiece 2, thereby improving the precision of the forming control of the forming die assembly 1 on the workpiece 2, which is beneficial for further reducing the forming process of the workpiece 2 and optimizing the forming quality.

[0055] According to one embodiment of the present invention, the free end of the first connecting rod 132 is formed with a groove recessed away from the base 11, and one end of the cantilever 134 is pivotally received in the groove, with the outer surface of one end of the cantilever 134 spaced apart from the bottom wall of the groove. It is understood that when one end of the cantilever 134 rotates within the groove, causing the other end of the cantilever 134 to gradually move away from the free end of the second connecting rod 133, the distance between the outer surface of one end of the cantilever 134 and the bottom wall of the groove will change. When at least a portion of the outer surface of one end of the cantilever 134 abuts against the bottom wall of the groove, one end of the cantilever 134 can no longer continue to rotate, thus stopping the rotation of the cantilever 134. Therefore, by forming a groove at the free end of the first connecting rod 132 that is recessed away from the base 11, and pivotally housing one end of the cantilever 134 within the groove and spaced apart from the bottom wall of the groove, the groove can restrict the rotation of the cantilever 134, thereby limiting the maximum angle of rotation of the cantilever 134 relative to the first connecting rod 132, and limiting the farthest distance between the other end of the cantilever 134 and the free end of the second connecting rod 133. This improves the adaptability of the rotation angle of the cantilever 134 to the installation arrangement of the entire molding die assembly 1, enabling the cantilever 134 to better meet the arrangement and movement requirements of the upper mold 13, as well as the output requirements of the workpiece 2, which is beneficial to improving the working performance of the molding die assembly 1 and saving arrangement space.

[0056] Furthermore, in one specific embodiment of the present invention, the upper mold 13 further includes a rotating shaft 136 as shown in Figures 4-6. The rotating shaft 136 is rotatably disposed at the free end of the first connecting rod 132 and received in a groove. One end of the cantilever 134 is formed with a through hole suitable for the rotating shaft 136 to pass through, so that one end of the cantilever 134 and the groove can be easily pivotally connected through the rotating shaft 136. In another specific embodiment of the present invention, a stop screw 137 is provided between the rotating shaft 136 and the free end of the first connecting rod 132 to limit the axial movement of the rotating shaft 136 and realize a reliable connection between the rotating shaft 136 and the first connecting rod 132.

[0057] According to one embodiment of the present invention, the free end of the second connecting rod 133 is formed with a snap-fit ​​portion 1331 as shown in FIG. 5, and the cross-section of the snap-fit ​​portion 1331 gradually decreases in the extending direction of the second connecting rod 133. The other end of the cantilever 134 is formed with a snap-fit ​​groove, and the snap-fit ​​groove is adapted to engage with the snap-fit ​​portion 1331. By forming the snap-fit ​​portion 1331 at the free end of the second connecting rod 133 and the snap-fit ​​groove at the other end of the cantilever 134, the other end of the cantilever 134 and the free end of the second connecting rod 133 can be snapped together by a snap-fit ​​engagement, so that the cantilever 134, the first connecting rod 132 and the second connecting rod 133 can be in a relatively fixed state when the punch 135 presses the workpiece 2, thereby ensuring that the forming mold assembly 1 can perform good forming of the workpiece 2. The engagement of the locking groove and the locking part 1331 allows the cantilever 134 and the punch 135 to easily and quickly detach from the free end of the second connecting rod 133 under the action of gravity, thereby improving the working efficiency of the molding die assembly 1. In addition, by setting the cross-section of the locking part 1331 to gradually decrease in the extension direction of the second connecting rod 133, the outer surface of the locking part 1331 can guide the locking part 1331 into the locking groove, thereby improving the locking efficiency between the locking part 1331 and the locking groove.

[0058] Furthermore, in one specific embodiment of the present invention, the side surface of the snap-fit ​​portion 1331 is an arc surface, and the inner wall of the snap-fit ​​groove is an arc surface that matches the side surface of the snap-fit ​​portion 1331, so that the snap-fit ​​portion 1331 and the snap-fit ​​groove have smooth contact, thereby protecting the snap-fit ​​portion 1331 from interference with the groove and extending the lifespan of the snap-fit ​​portion 1331 and the snap-fit ​​groove.

[0059] According to one embodiment of the present invention, the pivot axis of the cantilever 134 is orthogonal to the moving direction of the upper mold base 131, wherein the moving direction of the upper mold base 131 is the direction of moving toward or away from the base 11. By setting the pivot axis of the cantilever 134 to be orthogonal to the moving direction of the upper mold base 131, on the one hand, the rotation direction and position of the cantilever 134 are made reasonable, which helps to save the layout and working space of the overall molding mold assembly 1; on the other hand, by setting the pivot axis of the cantilever 134 to be orthogonal to the moving direction of the upper mold base 131, when the cantilever 134 disengages from the second connecting rod 133's locking part 1331 under its own action and the action of the punch 135, before the punch 135 contacts the workpiece 2, the locking groove of the cantilever 134 is always located on the side of the locking part 1331 closer to the base 11. Thus, when the upper mold base 131 drives the punch 135 to contact the workpiece 2, the locking groove will move towards the locking part 1331 under the action of the pressure core 12 and the base 11, thereby ensuring that the locking groove can smoothly engage with the locking part 1331, so as to realize the normal operation of the molding mold assembly 1.

[0060] As shown in Figures 1, 3, 5, and 7, according to an embodiment of the present invention, the pressure core 12 includes a support portion 121 and a third elastic element 122. In this embodiment, the support portion 121 can support and fix the workpiece 2 to be processed, so as to realize the cooperation between the workpiece 2 and the punch 135. The support portion 121 and the base 11 are spaced apart in the thickness direction. In this embodiment, the third elastic element 122 is disposed between the support portion 121 and the base 11, and the third elastic element 122 can buffer, support, and fix the support portion 121. By setting a bearing portion 121 and a third elastic element 122, the third elastic element 122 is positioned between the bearing portion 121 and the base 11. When the punch 135 moves to contact the workpiece 2, the force exerted by the cantilever 134 and the punch 135 on the bearing portion 121 due to gravity causes the third elastic element 122 to generate a reaction force on the bearing portion 121. This allows the cantilever 134 to rotate, smoothly engaging the locking groove with the locking portion 1331, thus ensuring the accurate fit between the punch 135 and the workpiece 2. After the locking groove engages with the locking portion 1331, the cantilever 134 and the punch 135 continue to move towards the base 11, continuing to apply force to the bearing portion 121. At this time, the third elastic element 122 receives the bearing force. When the load-bearing part 121 is compressed, the third elastic element 122 will generate a reaction force on the load-bearing part 121, so that the load-bearing part 121 can continuously apply pressure to the workpiece 2 to provide the pressing force required for molding, ensuring the smooth molding of the workpiece 2. After the workpiece 2 is molded, the upper mold base 131 drives the cantilever 134 and the punch 135 to move away from the base 11. At this time, the load-bearing part 121 will also move away from the base 11 under the restoring force of the third elastic element 122, so as to continue to press the workpiece 2, provide the stripping force, and maintain the shape of the molded workpiece 2 until the punch 135 separates from the molded workpiece 2, thereby improving the molding quality and efficiency of the molding die assembly 1 for the workpiece 2.

[0061] Furthermore, in one specific embodiment of the present invention, the third elastic element 122 is constructed as a nitrogen spring. Since nitrogen springs are characterized by small size, high elastic force, long lifespan, and constant elastic force, constructing the third elastic element 122 as a nitrogen spring helps optimize the volume of the molding die assembly 1, saves layout space, extends the lifespan of the molding die assembly 1, and reduces maintenance costs.

[0062] In another specific embodiment of the present invention, screws are respectively provided between the two ends of the bearing portion and the base to achieve a fixed connection between the bearing portion and the base, thereby improving the working reliability of the bearing portion.

[0063] In another specific embodiment of the present invention, the molding die assembly further includes positioning plates 20. The positioning plates 20 are configured as two, located on both sides of the support portion, and respectively disposed at the free end of the second side plate and covering the open end of the receiving cavity. The positioning portion can limit the position of the workpiece on the support portion, thereby further ensuring the accuracy of the workpiece's arrangement.

[0064] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0065] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0066] In the description of this invention, "a plurality of" means two or more.

[0067] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0068] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do 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 one or more embodiments or examples.

[0070] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A molding die assembly, characterized in that, include: Base; A pressure core is disposed on the base and is adapted to carry the workpiece to be processed; The upper die is selectively movable toward the base and presses the workpiece to be processed; a first extruder and a second extruder are respectively disposed on the base and located on both sides of the pressure core, the first extruder and the second extruder are adapted to press the workpiece to be processed when the upper die moves toward the base; the upper die includes: an upper die base, the upper die base is selectively movable toward or away from the base, the upper die base forms a first link and a second link; a cantilever, one end of the cantilever is pivotally connected to the free end of the first link; a punch, the punch is disposed on the cantilever and adapted to press the workpiece to be processed; wherein the other end of the cantilever is adapted to abut against the free end of the second link when the punch presses the workpiece to be processed; the other end of the cantilever is adapted to separate from the free end of the second link when the upper die base moves away from the base.

2. The molding die assembly according to claim 1, characterized in that, The first extruder and the second extruder are movably disposed on the base, and the first extruder and the second extruder have a first extrusion portion and a second extrusion portion respectively formed on the side facing each other; wherein the first extruder and the second extruder are adapted to move away from each other when the upper die moves toward the base, and the first extrusion portion and the second extrusion portion extrude the workpiece to be processed.

3. The molding die assembly according to claim 2, characterized in that, One end of the first extruder is hinged to the base, and the other end of the first extruder is rotatably provided with the first extrusion part; one end of the second extruder is hinged to the base, and the other end of the second extruder is rotatably provided with the second extrusion part.

4. The molding die assembly according to claim 3, characterized in that, Also includes: A first elastic element is connected between the base and the other end of the first extruder; The second elastic element is connected between the base and the other end of the second extruder.

5. The molding die assembly according to claim 4, characterized in that, The first extrusion section and the second extrusion section are respectively constructed as flexible rollers.

6. The molding die assembly according to claim 1, characterized in that, The free end of the first connecting rod has a groove that is recessed away from the base, and one end of the cantilever is pivotally received in the groove and spaced apart from the bottom wall of the groove.

7. The molding die assembly according to claim 1, characterized in that, The free end of the second connecting rod has a locking portion with a cross-section that gradually decreases in the extension direction, and the other end of the cantilever has a locking groove suitable for engaging with the locking portion.

8. The molding die assembly according to claim 1, characterized in that, The pivot axis of the cantilever is orthogonal to the moving direction of the upper mold base.

9. The molding die assembly according to claim 1, characterized in that, The pressing core includes: a bearing portion, which is spaced apart from the base in the thickness direction; and a third elastic element, which is disposed between the bearing portion and the base.

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