Parts shaping device and method

Abstract

The present invention discloses a part shaping device and method. The device comprises a first die and a second die. The first die can squeeze the side walls of parts with different deformation amounts outwards through the cooperation of a plurality of split first inserts and a plurality of corresponding first slide blocks, thereby expanding the accommodating cavity of the parts, and further making a large number of parts have accommodating cavities of the same size and the same side wall position, thereby improving the versatility of the subsequent second die for shaping different parts and improving the feasibility of batch part shaping; the shaping device of the present invention is used to shape the sintered parts, and the yield of the product can be increased to more than 95%.

Description

Technical Field

[0001] The invention relates to the technical field of powder metallurgy product shaping, and in particular to a parts shaping device and method. Background Art

[0002] like Figure 1 A part 10 shown in the figure comprises a bottom wall 110 and four side walls 120 arranged on the bottom wall 110. The four side walls 120 and the bottom wall 110 enclose a receiving cavity for accommodating other parts. A through hole 130 is provided on the bottom wall 110. A first connecting portion is provided at the connection of two side walls 120, and a first connecting hole 140 is provided at the first connecting portion. A second connecting portion is provided at the connection of the other two side walls 120, and a second connecting portion is provided at the second connecting hole 150. The part has the characteristics of small size, complex structure and high precision requirement, and can generally be prepared by powder metallurgy technology, so that the product precision requirement can be ensured, and the product production efficiency can be improved, metal materials can be saved and costs can be reduced.

[0003] The above parts need to be sintered after injection molding to obtain high-density and high-strength products. Limited by the powder metallurgy process, the sintered products will have uncontrollable deformation. If the deformed products are scrapped as defective products, the production defect rate will be high. Therefore, how to save sintered abnormal products and reduce cost waste is a problem that technicians in this field continue to work on. Summary of the invention

[0004] In order to overcome the defects in the prior art, an embodiment of the present invention provides a part shaping device and method, which are used to shape sintered parts, improve the part yield rate and reduce cost waste.

[0005] The embodiment of the present application discloses: a part shaping device, wherein the part comprises a bottom wall and a plurality of side walls arranged on the bottom wall, the plurality of side walls and the bottom wall form a receiving cavity, the bottom wall is provided with a through hole, and the part shaping device comprises:

[0006] The first mold comprises a first upper mold assembly and a first lower mold assembly, wherein the first upper mold assembly comprises a first upper mold insert and a plurality of first plungers distributed around the first upper mold insert, the first lower mold assembly comprises a first lower mold insert, a plurality of first sliders slidably arranged on the outer periphery of the first lower mold insert, a plurality of first inserts slidably arranged in the inner cavity of the first lower mold insert, and a driving member respectively connected to the plurality of first inserts, wherein the first plungers, the first sliders and the first inserts are arranged in a one-to-one correspondence, and when the first upper mold assembly and the first lower mold assembly are molded together, the first plungers push the corresponding first sliders to slide toward the corresponding first inserts, and the driving member drives the plurality of first inserts to slide toward the corresponding first sliders to squeeze the plurality of side walls, so that the accommodating cavity of the part is expanded;

[0007] The second mold is used to shape the part after the first mold. When the second mold is closed, the multiple side walls of the part are squeezed toward the accommodating cavity so that the accommodating cavity is shrunk to a preset size.

[0008] Specifically, the first lower die assembly includes a first lower die base and a first lower die movable plate elastically connected to the first lower die base, the first lower die insert, the first slider and the first insert are arranged on the first lower die movable plate, and the driving member is connected to the first lower die base and passes through the first lower die movable plate to be connected with the plurality of first inserts.

[0009] Specifically, a plurality of the first entry sub-enclosures form an active channel, the inner dimension of the active channel decreases from top to bottom, and the driving member penetrates one end of the first lower mold movable plate into the active channel and the outer dimension of the end decreases from top to bottom.

[0010] Specifically, a groove with two through ends is provided on the side of the first insert facing the movable channel, and the distance between the two oppositely arranged grooves decreases from top to bottom. A protrusion is provided on the outer wall of the driving member for being placed in the groove and conforming to the groove, and the protrusion is interlocked with the corresponding groove.

[0011] Specifically, the groove and the protrusion are in a dovetail shape.

[0012] Specifically, the first sliding block is connected to the first lower mold insert by using a first elastic member.

[0013] Specifically, the second mold includes a pre-shrinkage mold and a fine-shrinkage mold. The pre-shrinkage mold is used to perform a first shrinkage of the accommodating cavity of the part after the first mold, and the fine-shrinkage mold is used to perform a second shrinkage of the accommodating cavity of the part after the pre-shrinkage mold, so that the accommodating cavity is shrunk to a preset size.

[0014] Specifically, the part shaping device further includes a third mold and a fourth mold, wherein the third mold is used to punch the through holes of the part after the second mold, and the fourth mold is used to perform burr reduction treatment on the through holes of the part after the third mold.

[0015] Specifically, the part shaping device further comprises a fifth mould, which is used for finishing the part after the fourth mould.

[0016] The embodiment of the present application also discloses: a part shaping method, comprising the following steps: Step 1: moving multiple side walls of the part outward through the first mold of the present embodiment to enlarge the accommodating cavity of the part; Step 2: moving multiple side walls of the part inward through the second mold of the present embodiment to shrink the accommodating cavity of the part to a preset size.

[0017] The present invention has at least the following beneficial effects:

[0018] 1. The shaping device of the present invention comprises a first mold and a second mold. The first mold can squeeze the side walls of parts with different deformation amounts outward by cooperating with a plurality of split first inserts and a corresponding plurality of first sliders, thereby expanding the accommodating cavity of the parts, and further allowing a large number of parts to have accommodating cavities of the same size and the same side wall position, thereby improving the versatility of the subsequent second mold for shaping different parts and improving the feasibility of batch part shaping; the shaping device of the present invention is used to shape the sintered parts, and the product yield can be increased to more than 95%.

[0019] 2. The shaping device of the present invention has a simple and compact mold structure, operates in a progressive die manner, and has high operating efficiency.

[0020] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of parts in an embodiment of the present invention;

[0023] Figure 2 It is a structural schematic diagram of a parts shaping device in an embodiment of the present invention;

[0024] Figure 3 yes Figure 2 Sectional view at AA in the middle;

[0025] Figure 4 yes Figure 2 Sectional view at the middle BB;

[0026] Figure 5 yes Figure 4 A partial enlarged view of the middle A;

[0027] Figure 6 is a structural schematic diagram of the first lower mold assembly in an embodiment of the present invention;

[0028] Figure 7 is a cross-sectional view of the cooperation between the first insert and the driving member in an embodiment of the present invention;

[0029] Figure 8 is a schematic structural diagram of a first insert and a driving member in an embodiment of the present invention;

[0030] Fig. 9 yes Figure 3 Sectional view at CC;

[0031] Fig.10 yes Figure 4 Sectional view at DD in the middle;

[0032] Fig.11 yes Fig.10 A partial enlarged view of point B in the middle;

[0033] Fig.12 yes Fig.10 A partial enlarged view of point C in the middle;

[0034] Fig.13 yes Fig.10 A partial enlarged view of point D in the middle;

[0035] Fig.14 is a structural schematic diagram of the automatic feeding mechanism in the embodiment of the present invention from the first viewing angle;

[0036] Fig.15 It is a structural schematic diagram of the automatic feeding mechanism in the embodiment of the present invention from a second viewing angle.

[0037] Reference numerals of the above drawings: 1. first mold; 111. first upper mold insert; 112. first insert; 113. first upper mold base; 114. first upper mold movable plate; 121. first lower mold insert; 122. first slider; 1221. cavity; 123. first insert; 1231. groove; 124. driving member; 1241. protrusion; 125. first lower mold base; 126. first lower mold movable plate; 127. guide column; 128. second lower mold movable plate; 1291. first guide pin; 1292. second guide pin; 2. second mold; 21 , pre-shrinkage mold; 22, fine shrinkage mold; 3, third mold; 311, third upper mold insert; 312, third insert; 315, punch; 323, third mold core; 4, fourth mold; 411, fourth upper mold insert; 423, fourth mold core; 425, fourth insert; 5, fifth mold; 6, automatic feeding mechanism; 61, material taking module; 62, X-axis cylinder; 63, Y-axis cylinder; 64, Z-axis cylinder; 10, parts; 110, bottom wall; 120, side wall; 130, through hole; 140, first connecting hole; 150, second connecting hole. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] like Figure 1 As shown, the part 10 of this embodiment includes a bottom wall 110 and four side walls 120 arranged on the bottom wall 110, and the four side walls 120 and the bottom wall 110 form a accommodating cavity, which is used to accommodate other components (such as a miniature camera). A through hole 130 is provided on the bottom wall 110, wherein a first connecting portion is provided at the connection between two side walls 120, and a first connecting hole 140 is provided on the first connecting portion, and a second connecting portion is provided at the connection between the other two side walls 120, and a second connecting portion is provided with a second connecting hole 150.

[0040] In the process of producing the above-mentioned part 10 by powder metallurgy, the inventor found that the part 10 would deform to different degrees and directions (the deformation directions of the four side walls 120 may be different) after sintering, so that the size of the accommodating cavity of the part 10 exceeds the design range, and the amount by which the accommodating cavity exceeds the standard varies. Therefore, it is difficult to achieve batch trimming of parts 10 with different deformation amounts by using a traditional, single shaping mold. In view of this, the inventor proposed the part shaping device of this embodiment.

[0041] like Figure 2 As shown, the part shaping device of this embodiment mainly includes a first mold 1 and a second mold 2. The first mold 1 is used to expand the accommodating cavity of the parts 10 with different deformation amounts, so that all the parts 10 entering the second mold 2 have accommodating cavities of the same size and the same position of the side wall 120, so as to improve the versatility of subsequent molds for shaping different parts 10 and improve the feasibility of shaping batch parts 10. The second mold 2 is used to shrink the expanded accommodating cavity of the part 10, so that the accommodating cavity of each part 10 is shrunk to a preset size.

[0042] like Figures 3 to 7 As shown, the first mold 1 includes a first upper mold assembly and a first lower mold assembly. The first upper mold assembly includes a first upper mold insert 111 and four first insert knives 112 distributed around the first upper mold insert 111. The first lower mold assembly includes a first lower mold insert 121 (the first lower mold insert 121 has an inner cavity penetrating at both ends), four first sliders 122 slidably arranged on the outer periphery of the first lower mold insert 121, four first inserts 123 slidably arranged in the inner cavity of the first lower mold insert 121, and a driving member 124 connected to the four first inserts 123. The first insert knives 112, the first sliders 122 and the first inserts 123 are arranged in a one-to-one correspondence, that is, one first insert knives 112 is used to push one first slider 122 to move toward one first insert 123, so that the first slider 122 and the corresponding first insert 123 can shape a side wall 120 of the part 10.

[0043] Specifically, if Fig. 9 As shown, the first upper mold assembly includes a first upper mold base 113 and a first upper mold movable plate 114 movably connected thereto, the first upper mold insert 111 is fixed on the first upper mold movable plate 114, and the four first inserts 112 are respectively fixed on the first upper mold base 113. Figure 6 , Fig.10 and Fig.11As shown, the first lower die assembly includes a first lower die base 125 and a first lower die movable plate 126 elastically connected thereto (the first lower die base 125 is provided with a guide column 127 penetrating the first lower die movable plate 126, and the guide column 127 is located between the first lower die base 125 and the first lower die movable plate 126 and is sleeved with a spring for elastically connecting the first lower die base 125 and the first lower die movable plate 126), a first lower die insert 121 is provided on the first lower die movable plate 126, and four first sliders 122 are also provided thereon. The first lower mold movable plate 126 is distributed on the periphery of the first lower mold insert 121, four first inserts 123 are arranged on the first lower mold movable plate 126 and are located in the inner cavity of the first lower mold insert 121, the driving member 124 is arranged on the first lower mold base 125 and passes through the first lower mold movable plate 126 to be connected with the four first inserts 123, and the first lower mold base 125 is also provided with a first guide pin 1291 and a second guide pin 1292 which sequentially pass through the first lower mold movable plate 126 and the first lower mold insert 121.

[0044] When the first mold 1 is used to shape the part 10, the part 10 is placed on the first lower mold assembly, the first connecting hole 140 and the second connecting hole 150 of the part 10 are respectively sleeved on the first guide pin 1291 and the second guide pin 1292, and the bottom wall 110 of the part 10 contacts the end faces of the four first inserts 123 to achieve the initial positioning of the part 10. At this time, the four first inserts 123 are in a state of being close to each other (or closed), and are all located in the accommodating cavity of the part 10. When the first upper mold assembly and the first lower mold assembly are molded together, the four first inserts 112 respectively push the four first sliders 122 to slide toward the corresponding first inserts 123, and the driving member 124 drives the four first inserts 123 to move toward the corresponding first sliders 122. In other words, the driving member 124 drives the four first inserts 123 to move in directions away from each other so that the four first inserts 123 are in an open state. By setting the sliding amount of the first slider 122 and the first insert 123 to a fixed value, it can be ensured that the accommodating cavities of all parts 10 after being shaped by the first mold 1 have the same size. In this step, the first mold 1 enlarges the size of the accommodating cavity of each part 10, that is, after being shaped by the first mold 1, the size of the first accommodating cavity of the part 10 is larger than its designed size.

[0045] It should be noted that, by collecting and analyzing the sizes of the accommodating cavities of a large number of sintered parts 10, the outer peripheral dimensions of the four first inserts 123 when closed can be set to be smaller than the size of the smaller accommodating cavity. In this way, it can be ensured that when most of the parts 10 are placed in the first lower mold assembly, the four first inserts 123 are all located in the accommodating cavity of the part 10.

[0046] like Figure 7 and Figure 8As shown, the four first inserts 123 of this embodiment surround a movable channel, the inner dimension of the movable channel decreases from top to bottom (from top to bottom in this embodiment refers to the direction from the upper mold to the lower mold), and the driving member 124 penetrates one end of the first lower mold movable plate 126 into the movable channel, and the outer dimension of the end of the driving member 124 decreases from top to bottom. Further, each first insert 123 is provided with a groove 1231 with two ends passing through on the side facing the movable channel, the groove 1231 extends from top to bottom, and the distance between two grooves 1231 arranged opposite to each other decreases from top to bottom. Four protrusions 1241 are provided on the outer wall of the driving member 124, and the four protrusions 1241 are respectively accommodated in the four grooves 1231 and conform to the grooves 1231, and any protrusion 1241 is interlocked with the corresponding groove 1231. Specifically, the groove 1231 and the protrusion 1241 of the present embodiment may be in a dovetail shape, a spherical shape or other interlocking structures, preferably a dovetail shape for ease of processing and forming.

[0047] By adopting the above scheme, when the first lower mold movable plate 126 elastically connected to the first lower mold base 125 moves downward under the action of the upper mold assembly, the four first inserts 123 move downward relative to the driving member 124. As the outer dimension of the driving member 124 inserted into the active channel becomes larger, the four first inserts 123 are forced to open and move back and forth, thereby realizing the movement of the first inserts 123 toward the first slider 122. When the mold is opened, the force of the upper mold assembly disappears. During the resetting of the first lower mold movable plate 126, the four first inserts 123 move upward relative to the driving member 124. As the outer dimension of the driving member 124 portion inserted into the active channel becomes smaller, and the protrusion 1241 of the driving member 124 is interlocked with the groove 1231 on the first inserts 123, the four first inserts 123 are also forced to pull back and move toward each other during the upward movement, thereby realizing the resetting of the first inserts 123. The first insert 123 and the driving member 124 of the structure are simple and compact in structure and simple in movement, which is conducive to simplifying the mold design and saving the mold volume.

[0048] In this embodiment, the first slider 122 and the first lower mold insert 121 are connected by a first elastic member, which is preferably a spring. Fig.11 As shown, the first slider 122 of this embodiment is provided with a cavity 1221 on one side facing the first lower mold insert 121, and a first elastic member is provided in the cavity 1221, and two ends of the first elastic member are respectively against the wall surface of the cavity 1221 and the first lower mold insert 121. With the above solution, the first slider 122 can be automatically reset.

[0049] Furthermore, if Figure 4 and Fig.11As shown, the first lower mold assembly of the present embodiment also includes a second lower mold movable plate 128 which is arranged on the side of the first lower mold movable plate 126 away from the first lower mold base 125. The second lower mold movable plate 128 has an inner cavity for accommodating the first slider 122, the first lower mold insert 121 and other components. The second lower mold movable plate 128 can limit the resetting of the first slider 122.

[0050] like Figure 2 As shown, the second mold 2 of this embodiment includes a pre-shrinkage mold 21 and a fine shrinkage mold 22. Among them, the pre-shrinkage mold 21 is used to perform the first shrinkage of the accommodating cavity of the part 10 after the first mold 1. At this time, the accommodating cavity of the part 10 is reduced, but not reduced to the final size. Then, the part 10 processed by the pre-shrinkage mold 21 is subjected to a second shrinkage of the accommodating cavity through the fine shrinkage mold 22. At this time, the accommodating cavity of the part 10 is shrunk to a preset size, that is, the expected product size. In the above scheme, the use of two progressive shaping methods can effectively prevent the part 10 from rebounding and deforming, ensuring that the size and shape of the product after shaping are more stable.

[0051] The structures of the pre-shrinkage mold 21 and the fine shrinkage mold 22 of this embodiment are substantially the same as those of the first mold 1, and the main difference lies in the lower mold assembly. Fig. 9 and Fig.10 As shown, the lower mold assembly of the pre-shrinking mold 21 and the fine shrinking mold 22 may not be provided with a driving member 124, but an integral insert may be used to replace the four separate first inserts 123 in the first mold 1. The integral insert is fixedly arranged on the lower mold base and penetrates into the inner cavity of the lower mold insert to cooperate with the upper mold insert.

[0052] After being shaped by the first mold 1 and the second mold 2, the position and size of the through hole 130 of the part 10 may fluctuate. Given that the position accuracy and size accuracy of the through hole 130 are very high, such as Figure 2 As shown, the part shaping device of this embodiment may further include a third die 3 and a fourth die 4. The third die 3 may be used to punch the through hole 130 of the part 10 after the second die 2 to ensure the position and size accuracy of the through hole 130; limited by the punching process, after the third die 3 punches, punching burrs usually appear in the through hole 130, so the fourth die 4 may be used to press the burrs of the through hole 130 of the part 10 after the third die 3.

[0053] like Fig. 9 , Fig.10 and Fig.12As shown, the structure of the third die 3 of the present embodiment is substantially the same as that of the first die 1, with the main differences being: 1. in the third upper die assembly, the third insert 312 is fixed to the third upper die movable plate like the third upper die insert 311, and the third upper die seat is provided with a punch 315 penetrating the third upper die insert 311; 2. in the third lower die assembly, a third die core 323 is provided in the inner cavity of the third lower die insert for avoiding the punch 315 and facilitating punching and blanking.

[0054] like Fig. 9 , Fig.10 and Fig.13 As shown, the structure of the fourth mold 4 of this embodiment is generally the same as that of the third mold 3, and the main differences are: 1. In the fourth lower mold assembly, the fourth mold core 423 arranged in the inner cavity of the fourth lower mold insert has an inner cavity, and the inner cavity is used for the fourth insert 425 fixed to the fourth lower mold base to penetrate, and the fourth insert 425 penetrates into the inner cavity of the fourth mold core 423 and penetrates into the through hole 130 of the part 10 to achieve burr pressing; 2. In the fourth upper mold assembly, the punch 315 is eliminated, and the fourth upper mold insert 411 is provided with an inner cavity, and the inner cavity is used to avoid the fourth insert 425 moving upward.

[0055] After the above-mentioned processing steps, part 10 is likely to be slightly deformed. Figure 2 As shown, the part shaping device of this embodiment can also be a fifth mold 5, which is used to finish the part 10 after the fourth mold 4, so that the shape and size of the part 10 can achieve the expected effect. Specifically, Fig. 9 and Fig.10 As shown, the structure of the fifth mold 5 is substantially the same as that of the second mold 2 .

[0056] like Fig.14 and Fig.15 As shown, the part shaping device of this embodiment may also include an automatic feeding mechanism 6, which includes a plurality of material taking modules 61 and an X-axis cylinder 62, a Y-axis cylinder 63 and a Z-axis cylinder 64 respectively used to drive the material taking modules 61 to move along the X-axis, Y-axis and Z-axis directions. The distance between the plurality of material taking modules 61 is the same as the distance between several molds, so that the plurality of material taking modules 61 can take and discharge materials on a plurality of molds at the same time, which is conducive to improving the efficiency of the device operation.

[0057] To sum up, the working principle of the part shaping device of this embodiment is: first, the accommodating cavity of the part 10 is internally supported and expanded by the first mold 1, so that the four side walls 120 of the part 10 move away from the accommodating cavity relative to the shaping front, so that different parts 10 have accommodating cavities of the same size; then, the accommodating cavity of the part 10 is progressively shrunk by the second mold 2, so that the accommodating cavity of the part 10 is shrunk to a preset size and prevent rebound; then, the through hole 130 of the part 10 is punched again by the third mold 3 to achieve the effect of shaping the through hole 130, and the burr is pressed by the fourth mold 4 on the punched through hole 130; finally, the part 10 is finished by the fifth mold 5.

[0058] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A part shaping device, wherein the part comprises a bottom wall and a plurality of side walls arranged on the bottom wall, wherein the plurality of side walls and the bottom wall form a receiving cavity, and a through hole is arranged on the bottom wall, wherein: The parts shaping device comprises: The first mold comprises a first upper mold assembly and a first lower mold assembly, wherein the first upper mold assembly comprises a first upper mold insert and a plurality of first plungers distributed around the first upper mold insert, the first lower mold assembly comprises a first lower mold insert, a plurality of first sliders slidably arranged on the outer periphery of the first lower mold insert, a plurality of first inserts slidably arranged in the inner cavity of the first lower mold insert, and a driving member respectively connected to the plurality of first inserts, wherein the first plungers, the first sliders and the first inserts are arranged in a one-to-one correspondence, and when the first upper mold assembly and the first lower mold assembly are molded together, the first plungers push the corresponding first sliders to slide toward the corresponding first inserts, and the driving member drives the plurality of first inserts to slide toward the corresponding first sliders to squeeze the plurality of side walls, so that the accommodating cavity of the part is expanded; The second mold is used to reshape the part after the first mold expands the accommodating cavity of the part. When the second mold is closed, the multiple side walls of the part are squeezed toward the accommodating cavity so that the accommodating cavity is shrunk to a preset size.

2. The parts shaping device according to claim 1, characterized in that: The first lower die assembly includes a first lower die base and a first lower die movable plate elastically connected to the first lower die base, the first lower die insert, the first slider and the first insert are arranged on the first lower die movable plate, and the driving member is connected to the first lower die base and passes through the first lower die movable plate to be connected with the plurality of first inserts.

3. The parts shaping device according to claim 2, characterized in that: A plurality of the first entry sub-enclosures form an active channel, the inner dimension of the active channel decreases from top to bottom, the driving member passes through one end of the first lower mold movable plate and enters the active channel, and the outer dimension of the driving member passes through one end of the first lower mold movable plate and decreases from top to bottom.

4. The parts shaping device according to claim 3, characterized in that: A groove with two through ends is provided on the side of the first insert facing the movable channel, and the distance between the two oppositely arranged grooves decreases from top to bottom. A protrusion is provided on the outer wall of the driving member for being placed in the groove and conforming to the groove, and the protrusion is interlocked with the corresponding groove.

5. The parts shaping device according to claim 4, characterized in that: The groove and the protrusion are in a dovetail shape.

6. The parts shaping device according to claim 1, characterized in that: The first sliding block is connected to the first lower mold insert by a first elastic member.

7. The parts shaping device according to claim 1, characterized in that: The second mold includes a pre-shrinkage mold and a fine-shrinkage mold. The pre-shrinkage mold is used to perform a first shrinkage of the accommodating cavity of the part after the first mold, and the fine-shrinkage mold is used to perform a second shrinkage of the accommodating cavity of the part after the pre-shrinkage mold, so that the accommodating cavity is shrunk to a preset size.

8. The parts shaping device according to claim 1, characterized in that: The part shaping device also includes a third mold and a fourth mold, wherein the third mold is used to punch the through holes of the part after the second mold, and the fourth mold is used to perform burr treatment on the through holes of the part after the third mold.

9. The parts shaping device according to claim 8, characterized in that: The part shaping device further comprises a fifth die, which is used for finishing the part after the fourth die.

10. A method for shaping a part, wherein the part comprises a bottom wall and a plurality of side walls arranged on the bottom wall, wherein the plurality of side walls and the bottom wall form a receiving cavity, and a through hole is arranged on the bottom wall, wherein: The following steps are involved: Step 1: Move multiple side walls of the part outward through a first mold to enlarge the accommodating cavity of the part, the first mold includes a first upper mold assembly and a first lower mold assembly, the first upper mold assembly includes a first upper mold insert and multiple first plungers distributed around the first upper mold insert, the first lower mold assembly includes a first lower mold insert, multiple first sliders slidably arranged on the outer periphery of the first lower mold insert, multiple first inserts slidably arranged in the inner cavity of the first lower mold insert, and a driving member respectively connected to the multiple first inserts, the first plungers, the first sliders and the first inserts are arranged in a one-to-one correspondence, when the first upper mold assembly and the first lower mold assembly are molded together, the first plunger pushes the corresponding first slider to slide toward the corresponding first insert, and the driving member drives the multiple first inserts to slide toward the corresponding first slider to squeeze the multiple side walls, so that the accommodating cavity of the part is enlarged; Step 2: Move the multiple side walls of the part inward through a second mold so that the accommodating cavity of the part shrinks to a preset size.

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