Thickening, bending and forming device for 3C shell

Abstract

The utility model discloses a thickening, bending and forming device for a 3C shell. The thickening, bending and forming device for the 3C shell comprises an upper die part, a lower die part, an elastic pressing and thickening part, a lower top part and a vertical ejection part, the four corners of the upper die part are connected with the lower die base through lifting guide parts, elastic damping pieces in side moving pressing plates of the elastic pressing thickening parts are fixedly connected with an upper base plate, and the side moving pressing plates laterally float on the periphery of an upper die plate to form a thickening forming cavity. The lower top block at the lower top part is positioned under the elastic damping part; an ejection jig of the vertical ejection part is attached to the side surface of the upper template; the stamping air cylinder drives the lower die plate to upwards stamp the pre-machined part into the thickening forming cavity to form the 3C shell part with the bent end, the material ejecting jig tightly presses the bent end all the time, the lateral moving pressing plate moves outwards under the expansion deformation force of the bent end, and the bent end is evenly thickened. According to the utility model, the local position of the 3C shell is uniformly thickened, the strength requirement is met, and the product yield is high.

Description

Technical Field

[0001] The utility model relates to the field of 3C molding, in particular to a thickening and bending molding device for 3C shell parts. Background Art

[0002] 3C shells are often involved in 3C products. For example, the back panel and front frame of the LCM backlight module of TVs and monitors are both 3C shells. In order to pursue lighter 3C products, thinner metal materials (such as 0.5mm-1.5mm thick) are usually used and formed into 3C shells through a stamping process. The defects are: the 3C shell is thinned as a whole, but the local position of the product requires higher strength. The thinner structure cannot meet the strength requirement and is easily damaged or deformed, resulting in poor product assembly and reduced service life. Utility Model Content

[0003] In order to solve one or more of the above problems, the present invention provides a thickening and bending forming device for 3C shell parts.

[0004] According to one aspect of the present invention, the thickening and bending forming device for a 3C shell comprises: an upper mold portion, a lower mold portion, an elastic pressing and thickening portion, a lower top portion, and a vertical top portion;

[0005] The four corners of the upper base plate of the upper mold part are connected to the lower mold base through the lifting guide part, and the upper mold plate is fixed in the middle of the lower surface of the upper base plate;

[0006] The lower die plate of the lower die part is located directly below the upper die plate. The lower die plate is connected to the stamping cylinder, which is fixed in the middle of the lower die base.

[0007] The damping hole of the side displacement pressure plate of the elastically pressed thickened part is interference-connected with the elastic damping member, the upper end of the elastic damping member is fixedly connected to the upper base plate, and a plurality of side displacement pressure plates float laterally around the upper template to form a thickening forming cavity;

[0008] The lower top cylinder of the lower top is fixedly connected to the four sides of the lower die base, and the lower top block connected to the telescopic rod of the lower top cylinder is located directly below the elastic damping member;

[0009] The ejecting cylinder of the vertical ejecting part is fixed on the lower die base, and the upper end of the ejecting cylinder is connected to the ejecting fixture, which is attached to the side of the lower template;

[0010] The lower ejector cylinder drives the lower ejector block to press tightly against the elastic damping part and moves the upper die upward, placing the pre-processed part on the lower template. The ejector cylinder drives the ejector fixture to move upward, so that the pre-processed part fits under the side-shifting pressure plate. The stamping cylinder drives the lower template to punch the pre-processed part upward into the thickened forming cavity to form a 3C shell with a bent end. The ejector fixture keeps pressing the bent end, and the side-shifting pressure plate moves outward under the deformation force of the bending end, so that the bending end is evenly thickened.

[0011] In some embodiments, the side displacement pressure plate is provided with at least one damping hole, the vertical section of the damping hole is an isosceles trapezoidal shape, and the upper port size is smaller than the lower port size, and the elastic damping member and the damping hole have the same profile and size.

[0012] In some embodiments, the damping hole is an isosceles trapezoidal through hole, the upper port and the lower port thereof are rectangular, and the elastic damping member is an isosceles trapezoidal body.

[0013] In some embodiments, the first screw passes through the through hole of the upper base plate and connects to the threaded blind hole of the elastic damping member.

[0014] In some embodiments, a side pressure protrusion is provided at the lower end of the inner side surface of the side displacement pressure plate and a first positioning shoulder is provided at the upper end. The first positioning shoulder slides against the edge of the upper template, and the space surrounded by the four side pressure protrusions and the upper template forms a thickened molding cavity.

[0015] In some embodiments, an upper die base is further included that is fixedly connected to the upper base plate, and lateral limit blocks are provided on all four edges of the lower surface of the upper die base, and small gaps in the lateral limit blocks are located around the outer side of the side displacement pressure plate.

[0016] In some embodiments, each lateral limit block is fixedly connected to at least one lateral top column, and a lateral elastic member is provided between the front end of the lateral top column and the outer side surface of the lateral displacement pressure plate.

[0017] In some embodiments, an upper top block is formed on the inner side of the upper surface of the lifting body of the lifting fixture and a second positioning shoulder is formed at the lower end of the outer surface. The lifting body is connected to the inner side of the first floating plate, and the upper clamping limit block is connected to the outer side of the first floating plate. The upper clamping limit block fits the lifting body and is pressed against the second positioning shoulder.

[0018] In some embodiments, the lifting guide portion includes a linear bearing and a sliding guide shaft that cooperate with each other. The linear bearing is fixedly connected to the lower base plate of the lower mold base, the sliding guide shaft is fixed to the upper base plate, and the sliding guide shaft is vertically inserted into the linear bearing.

[0019] In some embodiments, the four corners of the mutually parallel lower seat plate and upper seat plate of the lower mold base are fixedly connected by vertical columns, and the upper seat plate is threadedly connected to the bottom of the lower base plate;

[0020] The ejecting cylinder is fixedly connected to the four sides of the lower base plate, the telescopic rod of the ejecting cylinder is connected to the lower side of the second floating plate, and the middle joint shaft above the second floating plate passes through the through hole of the upper base plate and the through hole of the lower base plate to connect to the first floating plate;

[0021] The lower ejection cylinder is fixedly connected to the four sides of the lower seat plate, and the telescopic rod of the lower ejection cylinder passes through the second floating plate, the through hole of the upper seat plate, and the through hole of the lower base plate to connect to the upper lower ejection block;

[0022] The punching cylinder is fixed in the middle of the lower seat plate, the telescopic rod of the punching cylinder is connected to the bottom of the third floating plate, and the vertical coupling on the third floating plate passes through the middle through hole of the upper seat plate and the through hole of the lower base plate to connect to the lower template above.

[0023] The thickening and bending forming device of the 3C shell effectively realizes the thickening forming of the local position where the product requires high strength by arranging an elastic pressing and thickening part and a vertical top material part. Its beneficial effects are: first, the local position of the 3C shell is uniformly thickened, so that the overall strength is improved, the strength requirement of the product is met, the product is not easy to deform, the product assembly yield is high, and the service life is long; second, the expansion deformation force of the lateral displacement pressure plate of the elastic pressing and thickening part acts on the elastic damping part as a whole, and its lateral displacement is not deflected, so the 3C shell is evenly thickened and the part precision is high; third, the top material fixture of the vertical top material part always presses the 3C shell part, so that the shell part itself has no vertical shaking and deflection, effectively obtaining a uniformly thickened 3C shell part with high part precision; fourth, a lifting guide part is provided to ensure the stamping accuracy of the forming, and the upper top is provided to ensure the opening of the forming cavity and the lateral displacement accuracy of the elastic damping part. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of a thickening and bending forming device for a 3C shell according to one embodiment of the present invention;

[0025] Figure 2 for Figure 1 A partially enlarged schematic diagram of a thickening and bending forming device for a 3C shell shown;

[0026] Figure 3 for Figure 2 A partial schematic diagram of the upper die portion and the elastically pressed thickened portion;

[0027] Figure 4 for Figure 2 A schematic diagram of the lower die portion shown;

[0028] Figure 5 for Figure 2 Schematic diagram of the vertical top material portion shown;

[0029] Figure 6 for Figure 2 The schematic diagram of the top is shown below;

[0030] Figure 7 for Figure 1 Schematic diagram of the lower die base shown;

[0031] Figure 8 for Figure 1 Schematic diagram of the upper die base shown;

[0032] Upper mold part 01, upper base plate 1, upper mold plate 2, thickened molding cavity 010;

[0033] Lower die part 02, lower die plate 3, punching cylinder 4, third floating plate 15, vertical coupling 16;

[0034] Elastic pressing thickened portion 03, lateral displacement pressure plate 5, lateral pressure protrusion 50, damping hole 51, first positioning shoulder 52, elastic damping member 6, first screw 17;

[0035] Lower top 04, lower top cylinder 7, lower top block 8;

[0036] Vertical ejection part 05, ejection cylinder 9, ejection fixture 10, ejection body 100, upper top block 101, second positioning shoulder 102, first floating plate 11, upper pressing limit block 12, lower positioning port 121, second floating plate 13, middle joint shaft 14;

[0037] Lower mold base 06, lower base plate 060, lower seat plate 061, upper seat plate 062, vertical column 063;

[0038] Lifting guide part 07, linear bearing 071, sliding guide shaft 072,

[0039] Upper die base 08, lateral limit block 081, lateral top column 082, lateral elastic member 083;

[0040] 3C shell 00, bent end 001. DETAILED DESCRIPTION

[0041] The present invention will be described in further detail below with reference to the accompanying drawings. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inward" and "outward" refer to directions toward or away from the geometric center of a particular component, respectively.

[0042] Figures 1 to 8 This diagram schematically illustrates a 3C case thickening and bending device according to one embodiment of the present invention. As shown, the 3C case thickening and bending device comprises: an upper die portion 01, a lower die portion 02, an elastically pressed thickening portion 03, a lower top portion 04, and a vertically extending top portion 05.

[0043] The four corners of the upper base plate 1 of the upper mold part 01 are connected to the lower mold base 06 through the lifting guide part 07, and the upper mold plate 2 is fixed in the middle of the lower surface of the upper base plate 1;

[0044] The lower die plate 3 of the lower die part 02 is located directly below the upper die plate 2. The lower die plate 3 is connected to the punching cylinder 4, which is fixed in the middle of the lower die base 06.

[0045] The damping hole 51 of the side displacement pressure plate 5 of the elastically pressed thickened portion 03 is interference-connected with the elastic damping member 6. The upper end of the elastic damping member 6 is fixedly connected to the upper base plate 1. Several side displacement pressure plates 5 float laterally around the upper template 2 to form a thickened molding cavity 010.

[0046] The lower top cylinder 7 of the lower top portion 04 is fixedly connected to the four sides of the lower die base 06, and the lower top block 8 connected to the telescopic rod of the lower top cylinder 7 is located directly below the elastic damping member 6;

[0047] The ejection cylinder 9 of the vertical ejection part 05 is fixed on the lower die base 06, and the upper end of the ejection cylinder 9 is connected to the ejection fixture 10, which is attached to the side of the lower template 3;

[0048] The lower ejection cylinder 7 drives the lower ejection block 8 to press tightly against the elastic damping part 6 and move the upper mold part 01 upward, placing the pre-processed part on the lower template 3, and the ejection cylinder 9 drives the ejection fixture 10 to move upward, so that the pre-processed part fits under the side displacement pressure plate 5, and the stamping cylinder 4 drives the lower template 3 to stamp the pre-processed part upward into the thickened forming cavity 010 to form a 3C shell part 00 with a bent end 001, and the ejection fixture 10 moves upward and presses the bent end 001 all the time, and the side displacement pressure plate 5 moves outward under the deformation force of the bending end 001, and the bending end 001 is evenly thickened.

[0049] Preferably, the lower surface of the upper template 2 and the upper top 004 of the 3C shell 00 have the same outer contour and size, and the lower template 3 and the 3C shell 00 have the same inner contour and size.

[0050] The 3C shell 00 is preferably the back panel and front frame panel of the LCM display module of a television or monitor.

[0051] The thickening and bending forming device of the 3C shell effectively realizes the thickening forming of the local position where the product requires high strength by setting the elastic pressing and thickening part 03 and the vertical top material part 05. Its beneficial effects are: first, the local position of the 3C shell is uniformly thickened, so that the overall strength is improved, the product strength requirement is met, the product is not easy to deform, the product assembly yield is high, and the service life is long; second, the expansion deformation force of the lateral displacement pressure plate 5 of the elastic pressing and thickening part 03 acts on the elastic damping part 6 as a whole, and its lateral displacement is not deflected, so the 3C shell is thickened uniformly and the part precision is high; third, the top material fixture 10 of the vertical top material part 05 always presses the 3C shell, so that the shell itself has no vertical shaking and deflection, effectively obtaining a uniformly thickened 3C shell with high part precision; fourth, a lifting guide part 07 is provided to ensure the stamping accuracy of the forming, and the upper top 04 is provided to ensure the opening of the forming cavity and the lateral displacement accuracy of the elastic damping part 6.

[0052] Furthermore, the lateral displacement pressure plate 5 is provided with at least one damping hole 51. The vertical cross-section of the damping hole 51 is an isosceles trapezoidal shape, with the upper end smaller than the lower end. The elastic damping member 6 and the damping hole 51 have the same profile and dimensions. Preferably, the damping hole 51 is an isosceles trapezoidal through-hole, with the upper and lower ends of the damping hole 51 being rectangular, and the elastic damping member 6 being an isosceles trapezoidal body. Preferably, the damping hole 51 is a frustum, with the upper and lower ends of the damping hole 51 being circular, and the elastic damping member 6 being a frustum. This arrangement advantageously ensures good lateral displacement damping and uniform thickening dimensions.

[0053] Furthermore, the first screw 17 passes through the through hole of the upper base plate 1 and is threadedly connected to the threaded blind hole of the elastic damping member 6. Preferably, the elastic damping member 6 is any one of rubber, thermoplastic elastomer (TPE), and spring. The beneficial effect is that the structure is simple and can provide good lateral displacement damping force.

[0054] Furthermore, a side pressure bump 50 is provided at the lower end of the inner side surface of the side shifting plate 5, and a first positioning shoulder 52 is provided at the upper end. The first positioning shoulder 52 slides against the edge of the upper template 2. The space enclosed by the four side pressure bumps 50 and the upper template 2 forms a thickened molding cavity 010. This has the beneficial effect of ensuring the accuracy of the side shifting.

[0055] Furthermore, the mold base 08 is fixedly connected to the upper base plate 1. The lower surface of the mold base 08 is equipped with lateral stoppers 081 along its edges. These stoppers 081 are positioned with small gaps around the outer side of the lateral displacement plate 5. Preferably, each lateral stopper 081 is fixedly connected to at least one lateral support post 082. A lateral elastic member 083 is positioned between the front end of the support post 082 and the outer side of the lateral displacement plate 5. The lateral elastic member 083 is preferably a spring or rubber block. This arrangement further enhances lateral damping, achieving dual damping and more uniform thickening.

[0056] Furthermore, the ejection jig 10 includes a rectangular ejection body 100. An upper top block 101 is formed vertically upward on the inner side of the upper surface of the ejection body 100, and a second positioning shoulder 102 is formed at the lower end of the outer side. The ejection body 100 is welded or threadedly connected to the inner side of the first floating plate 11. An upper clamping stop 12 is threadedly connected to the outer side of the first floating plate 11. The inner side of the upper clamping stop 12 is aligned with the ejection body 100, and the upper surface is flush with the ejection body 100. The lower positioning opening 121 is pressed against the second positioning shoulder 102. The advantageous effect is that the structure is compact in size while ensuring a good vertical ejection effect.

[0057] Furthermore, the lifting guide part 07 includes a linear bearing 071 and a sliding guide shaft 072 that cooperate with each other. The linear bearing 071 is fixedly connected to the lower base plate 060 of the lower mold base 06, and the sliding guide shaft 072 is fixed to the upper base plate 1. The sliding guide shaft 072 is vertically inserted into the linear bearing 071;

[0058] The first floating plate 11 and the lower template 3 are located on the lower base plate 060. The beneficial effect is that this arrangement can achieve good vertical lifting stamping forming.

[0059] Furthermore, the four corners of the mutually parallel lower base plate 061 and upper base plate 062 of the lower mold base 06 are fixedly connected by vertical columns 063, and the upper base plate 062 is screwed to the bottom of the lower base plate 060;

[0060] The vertical lifting part 05 also includes a second floating plate 13. The lifting cylinder 9 is fixedly connected to the four sides of the lower base plate 061. The telescopic rod of the lifting cylinder 9 is connected to the bottom of the second floating plate 13. The middle joint shaft 14 above the second floating plate 13 passes through the through hole of the upper base plate 062 and the through hole of the lower base plate 060 to connect to the first floating plate 11 above.

[0061] The lower push cylinder 7 is fixedly connected to the four sides of the lower seat plate 061, and the telescopic rod of the lower push cylinder 7 passes through the second floating plate 13, the through hole of the upper seat plate 062, and the through hole of the lower base plate 060 to connect to the upper lower push block 8;

[0062] The lower mold section 02 includes a third floating plate 15. The punching cylinder 4 is fixed to the center of the lower base plate 061. The telescopic rod of the punching cylinder 4 is connected to the bottom of the third floating plate 15. The vertical coupling 16 on the third floating plate 15 passes through the central through-hole of the upper base plate 062 and the through-hole of the lower base plate 060 to connect to the upper lower mold plate 3. Preferably, the third floating plate 15 can move up and down through the central through-hole of the second floating plate 13 and the central through-hole of the upper base plate 062. The advantages of this arrangement are: a simple structure and a small overall size.

[0063] The above descriptions are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. 3C shell thickening bending forming device, characterized in that, It includes: an upper mold part (01), a lower mold part (02), an elastic pressing thickening part (03), a lower top part (04) and a vertical top part (05); The four corners of the upper base plate (1) of the upper mold part (01) are connected to the lower mold base (06) through the lifting guide part (07), and the upper mold plate (2) is fixed in the middle of the lower surface of the upper base plate (1); The lower die plate (3) of the lower die portion (02) is located directly below the upper die plate (2), and the lower die plate (3) is connected to a stamping cylinder (4), which is fixed in the middle of the lower die base (06); The damping hole (51) of the side displacement pressure plate (5) of the elastically pressed thickened portion (03) is interference-connected to the elastic damping member (6), the upper end of the elastic damping member (6) is fixedly connected to the upper base plate (1), and a plurality of the side displacement pressure plates (5) float laterally around the upper template (2) to form a thickening molding cavity (010); The lower top cylinder (7) of the lower top portion (04) is fixedly connected to the four sides of the lower die base (06), and the lower top block (8) connected to the telescopic rod of the lower top cylinder (7) is located directly below the elastic damping member (6); The ejection cylinder (9) of the vertical ejection part (05) is fixed on the lower mold base (06), and the upper end of the ejection cylinder (9) is connected to the ejection jig (10), and the ejection jig (10) is attached to the side of the lower mold plate (3); The lower ejection cylinder (7) drives the lower ejection block (8) to press and fit the elastic damping member (6) and moves the upper mold part (01) upward, placing the pre-processed part on the lower template (3); the ejection cylinder (9) drives the ejection fixture (10) to move upward, so that the pre-processed part fits under the side displacement pressure plate (5); the punching cylinder (4) drives the lower template (3) to punch the pre-processed part upward into the thickened forming cavity (010) to form a 3C shell part (00) with a bent end (001); the ejection fixture (10) keeps pressing the bent end (001); the side displacement pressure plate (5) is moved outward by the deformation force of the bent end (001), and the bent end (001) is evenly thickened.

2. The thickening and bending forming device for 3C shell according to claim 1, characterized in that: The side displacement pressure plate (5) is provided with at least one damping hole (51), the vertical section of the damping hole (51) is an isosceles trapezoidal shape, and the size of the upper port is smaller than the size of the lower port, and the elastic damping member (6) and the damping hole (51) have the same profile and size.

3. The thickening and bending forming device for 3C shell according to claim 2, characterized in that: The damping hole (51) is an isosceles trapezoidal through hole, the upper port and the lower port thereof are rectangular, and the elastic damping member (6) is an isosceles trapezoidal body.

4. The thickening and bending forming device for 3C shell according to claim 2, characterized in that: The first screw rod (17) passes through the through hole of the upper base plate (1) and is connected to the threaded blind hole of the elastic damping member (6).

5. The thickening and bending forming device for 3C shell according to claim 4, characterized in that: The lower end of the inner side surface of the side displacement pressure plate (5) is further provided with a side pressure protrusion (50) and the upper end is provided with a first positioning shoulder (52), wherein the first positioning shoulder (52) is slidably fitted to the edge of the upper template (2), and the space surrounded by the four side pressure protrusions (50) and the upper template (2) forms the thickened molding cavity (010).

6. The thickening and bending forming device for 3C shell according to claim 1, characterized in that: It also includes an upper die base (08) fixedly connected to the upper base plate (1), and lateral limit blocks (081) are provided on the edges of the lower surface of the upper die base (08), and a small gap between the lateral limit blocks (081) is located around the outer side surface of the lateral displacement pressure plate (5).

7. The thickening and bending forming device for 3C shell according to claim 6, characterized in that: Each of the lateral limit blocks (081) is fixedly connected to at least one lateral top column (082), and a lateral elastic member (083) is provided between the front end of the lateral top column (082) and the outer side surface of the lateral displacement pressure plate (5).

8. The thickening and bending forming device for 3C shell according to claim 1, characterized in that: The upper surface inner side of the ejecting body (100) of the ejecting jig (10) forms an upper top block (101) and the lower end of the outer surface forms a second positioning shoulder (102); the ejecting body (100) is connected to the upper inner side of the first floating plate (11); the upper pressing limit block (12) is connected to the upper outer side of the first floating plate (11); the upper pressing limit block (12) fits the ejecting body (100) and presses the second positioning shoulder (102).

9. The thickening and bending forming device for 3C shell according to claim 8, characterized in that: The lifting guide part (07) includes a linear bearing (071) and a sliding guide shaft (072) that cooperate with each other. The linear bearing (071) is fixedly connected to the lower base plate (060) of the lower mold base (06). The sliding guide shaft (072) is fixed to the upper base plate (1). The sliding guide shaft (072) is vertically inserted into the linear bearing (071).

10. The thickening and bending forming device for 3C shells according to claim 9, characterized in that: The four corners of the mutually parallel lower seat plate (061) and upper seat plate (062) of the lower die seat (06) are fixedly connected via vertical columns (063), and the upper seat plate (062) is threadedly connected to the lower base plate (060); The ejecting cylinder (9) is fixedly connected to the four sides of the lower base plate (061), the telescopic rod of the ejecting cylinder (9) is connected to the lower side of the second floating plate (13), and the middle coupling shaft (14) above the second floating plate (13) passes through the through hole of the upper base plate (062) and the through hole of the lower base plate (060) to connect to the first floating plate (11); The lower top cylinder (7) is fixedly connected to the four sides of the lower seat plate (061), and the telescopic rod of the lower top cylinder (7) passes through the second floating plate (13), the through hole of the upper seat plate (062), and the through hole of the lower base plate (060) to connect to the upper lower top block (8); The punching cylinder (4) is fixed in the middle of the lower seat plate (061), the telescopic rod of the punching cylinder (4) is connected to the bottom of the third floating plate (15), and the vertical coupling (16) on the third floating plate (15) passes through the middle through hole of the upper seat plate (062) and the through hole of the lower base plate (060) to connect to the upper lower template (3).

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