Case bending forming device

Abstract

The utility model discloses a case bending forming device which comprises an upper die assembly and a lower die assembly, and the upper die assembly comprises an upper die base, an upper base plate, an upper clamping plate, a stop plate, a stripper plate and a compression spring; the lower die assembly comprises a lower die base, a lower cushion plate and a lower die plate. Two bending punches are fixedly clamped and mounted between the upper clamping plate and the upper cushion plate, the two bending punches are a left side punch and a right side punch in sequence, the lower end part of the left side punch is provided with a left side limiting vertical surface and a left side limiting horizontal surface, and the lower end part of the right side punch is provided with a right side limiting vertical surface and a right side limiting horizontal surface; the stripper plate is provided with two limiting sliding blocks between the two bending punches, the limiting sliding blocks are obliquely installed on the stripper plate in a sliding mode, the two limiting sliding blocks are a left sliding block and a right sliding block in sequence, the lower end of the left sliding block is provided with a left limiting boss, and the lower end of the right sliding block is provided with a right limiting boss. The machine case sheet metal part symmetrical inner bending device can effectively achieve machine case sheet metal part symmetrical inner bending machining, can effectively guarantee size precision, and is novel in structural design.

Description

Technical Field

[0001] The utility model relates to the technical field of bending processing devices, in particular to a chassis bending and forming device. Background Art

[0002] for Figure 1 As for the chassis sheet metal shown, its left and right ends are bent to form inwardly bent edges; for the inward bent edges of the chassis sheet metal, its inner bend height dimension H1 and outer bend dimensions H2 and L are all high-precision required dimensions.

[0003] In addition, the patent number is: ZL202222296600.X, and the patent name is: A Chinese utility model patent for a pilot-type hardware sheet metal bending mold. It actually discloses a bending forming device. Specifically, the pilot-type hardware sheet metal bending mold includes an upper mold part and a lower mold part. The upper mold part includes an upper mold base, an upper pad, an upper splint, a stop plate, and a stripper plate arranged in sequence from top to bottom. A stroke cavity is provided between the stop plate and the upper splint, and a buffer spring is provided on the upper splint to resist the stop plate. A connecting piece is provided on the upper splint to prevent the stop plate and the stripper plate from falling off. A forming groove is provided on the stripper plate, and a bending block is provided on one side of the forming groove. A bending punch is provided on the stripper plate corresponding to the forming groove; the lower mold part includes a lower mold base, a lower pad, and a lower template arranged in sequence from bottom to top.

[0004] It should be pointed out that for the above-mentioned pilot type metal plate bending die, it is not possible to achieve Figure 1 The symmetrical inner bending process of the chassis sheet metal shown cannot effectively guarantee Figure 1 Dimensional accuracy of important dimensions of chassis sheet metal parts shown. Utility Model Content

[0005] The purpose of the utility model is to provide a chassis bending and forming device to address the deficiencies of the prior art. The chassis bending and forming device has a novel structural design, can effectively realize symmetrical inner bending processing, and can also effectively ensure dimensional accuracy.

[0006] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions.

[0007] A chassis bending and forming device includes an upper die assembly and a lower die assembly located below the upper die assembly. The upper die assembly includes an upper die base, an upper pad, an upper clamping plate, a stop plate, and a stripper plate arranged in sequence from top to bottom. The upper die base, the upper pad, and the upper clamping plate are screwed together in sequence. The stop plate is screwed to the stripper plate. A compression spring is installed between the upper clamping plate and the stop plate to push the stop plate downward.

[0008] The lower die assembly includes a lower die base, a lower pad, and a lower die plate which are screwed together in sequence from bottom to top;

[0009] Two bending punches are fixedly installed between the upper clamping plate and the upper pad, which are arranged symmetrically on the left and right and extend vertically respectively. Each bending punch vertically penetrates the stop plate and the stripper plate respectively.

[0010] The two bending punches are a left punch and a right punch, respectively. The lower end of the left punch is provided with a left limit vertical surface with a normal direction facing horizontally to the right and a left limit horizontal surface with a normal direction facing vertically downward. The lower end of the right punch is provided with a right limit vertical surface with a normal direction facing horizontally to the left and a right limit horizontal surface with a normal direction facing vertically downward.

[0011] The stripping plate is equipped with two symmetrically arranged limit sliders between the two bending punches, and each limit slider is installed on the stripping plate for oblique sliding. The two limit sliders are the left slider and the right slider respectively. The lower end of the left slider is provided with a left limit boss protruding horizontally toward the left, and the lower end of the right slider is provided with a right limit boss protruding horizontally toward the right.

[0012] The stripping plate is provided with movable cavities corresponding to the limit sliders, and the right side wall of the left movable cavity is provided with a left guide strip extending gradually from bottom to top toward the upper left, and the left side wall of the right movable cavity is provided with a right guide strip extending gradually from bottom to top toward the upper right;

[0013] The left slider is provided with a left guide groove corresponding to the left guide bar, and the left slider is slidably installed on the left guide bar through the left guide groove; the right slider is provided with a right guide groove corresponding to the right guide bar, and the right slider is slidably installed on the right guide bar through the right guide groove.

[0014] Wherein, the stripping plate is equipped with a slider anti-slipping part. When each of the limit sliders moves downward to the lower limit position relative to the stripping plate, the limit slider abuts against the slider anti-slipping part.

[0015] Wherein, a buffer spring and a vertically arranged movable ejector pin are respectively installed between the upper die base and the upper pad corresponding to each of the limit sliders, and the lower end of each buffer spring abuts against the upper end of the corresponding movable ejector pin;

[0016] The lower end portion of each movable ejector pin passes through the upper clamping plate and the stop plate respectively and abuts against the upper end surface of the limiting sliding block on the corresponding side.

[0017] Compared with the prior art, the present invention has the following beneficial effects, specifically:

[0018] 1. When the upper die assembly and the lower die assembly are completely closed, the left slider, right slider, left bending punch, and right bending punch prevent the bending part of the chassis sheet metal from moving freely, thereby ensuring the bending dimensional accuracy of the chassis sheet metal;

[0019] 2. When the upper mold assembly moves upward and performs the mold opening action, when the stripper plate moves upward synchronously with the upper mold assembly, the left slider and the right slider will slide inward relative to the stripper plate, thereby causing the two limit sliders to gradually move inward, so that the left limit boss and the right limit boss retreat from the folding position of the chassis sheet metal, thereby facilitating demoulding and making it easier for the staff to take out the material;

[0020] 3. Therefore, the chassis bending and forming device of the present invention can effectively realize the symmetrical internal bending processing of the chassis sheet metal parts, and can also effectively ensure the dimensional accuracy, and the chassis bending and forming device has the advantage of novel structural design. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings. However, the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

[0022] Figure 1 This is a schematic diagram of the bending process of chassis sheet metal parts.

[0023] Figure 2 It is a structural schematic diagram of the chassis bending and forming device of the present utility model.

[0024] Figure 3 It is a partially enlarged schematic diagram of the chassis bending and forming device of the present invention.

[0025] exist Figures 1 to 3 These include:

[0026] 1-Upper die assembly; 11-Upper die base; 12-Upper pad; 13-Upper splint; 14-Stop plate; 15-Stripper plate; 161-Compression spring; 162-Connecting piece; 171-Left bending punch; 1711-Left limit vertical surface; 1712-Left limit horizontal surface; 172-Right bending punch; 1721-Right limit vertical surface; 1722-Right limit horizontal surface; 181-Left slider; 1811-Left limit boss; 182-Right slider; 1821-Right limit boss; 191-Buffer spring; 192-Movable ejector pin; 2-Lower die assembly; 21-Lower die base; 22-Lower pad; 23-Lower template; 3-Chassis sheet metal. DETAILED DESCRIPTION

[0027] The present invention will be described below in conjunction with specific implementation methods.

[0028] Example 1, as Figure 2 and Figure 3 As shown, a chassis bending and forming device includes an upper mold assembly 1 and a lower mold assembly 2 located below the upper mold assembly 1. The upper mold assembly 1 includes an upper mold base 11, an upper pad 12, an upper clamping plate 13, a stop plate 14, and a stripper plate 15 arranged in sequence from top to bottom. The upper mold base 11, the upper pad 12, and the upper clamping plate 13 are screwed in sequence, and the stop plate 14 is screwed to the stripper plate 15. A compression spring 161 is installed between the upper clamping plate 13 and the stop plate 14 to push the stop plate 14 downward. The stripper plate 15 is connected to the upper pad 12 or the upper clamping plate 13 through a connecting member 162, and the connecting member 162 can be an equal height sleeve structure.

[0029] Among them, such as Figure 2 and Figure 3 As shown, the lower die assembly 2 includes a lower die base 21, a lower pad 22, and a lower die plate 23 that are screwed together in sequence from bottom to top.

[0030] Further, such as Figure 2 and Figure 3 As shown, two bending punches that are symmetrically arranged on the left and right and extend vertically are fixedly installed between the upper clamping plate 13 and the upper pad 12, and each bending punch vertically penetrates the stop plate 14 and the stripper plate 15 respectively.

[0031] Furthermore, Figure 2 and Figure 3 As shown, the two bending punches are a left punch and a right punch respectively. The lower end of the left punch is provided with a left limiting vertical surface 1711 with the normal direction facing horizontally to the right and a left limiting horizontal surface 1712 with the normal direction facing vertically downward. The lower end of the right punch is provided with a right limiting vertical surface 1721 with the normal direction facing horizontally to the left and a right limiting horizontal surface 1722 with the normal direction facing vertically downward.

[0032] In addition, if Figure 2 and Figure 3 As shown, the stripping plate 15 is equipped with two symmetrically arranged limit sliders between the two bending punches, and each limit slider is installed on the stripping plate 15 for oblique sliding. The two limit sliders are the left slider 181 and the right slider 182 respectively, and the lower end of the left slider 181 is provided with a left limit boss 1811 protruding horizontally toward the left, and the lower end of the right slider 182 is provided with a right limit boss 1821 protruding horizontally toward the right.

[0033] It should be noted that, when using the chassis bending and forming device of the first embodiment of the present invention to Figure 1During the symmetrical internal bending process of the chassis sheet metal part 3 shown, the distance between the left side limiting vertical surface 1711 of the left bending punch 171 and the right side limiting vertical surface 1721 of the right bending punch 172 corresponds to the size L of the chassis sheet metal part 3, and the height of the left side limiting boss 1811 of the left slider 181 and the right side limiting boss 1821 of the right slider 182 corresponds to the size H1 of the chassis sheet metal part 3; when the chassis bending and forming device is in a closed state, the distance from the left side limiting horizontal surface 1712 of the left bending punch 171 to the lower template 23, and the distance from the right side limiting horizontal surface 1722 of the right bending punch 172 to the lower template 23 respectively correspond to the size H2 of the chassis sheet metal part 3.

[0034] When the chassis bending and forming device of the first embodiment is used to Figure 1 During the symmetrical inner bending process of the chassis sheet metal part 3,

[0035] The staff places the chassis sheet metal 3 on the lower template 23, and then the upper mold assembly 1 moves downward and performs the mold closing action. The stripper plate 15 first presses the chassis sheet metal 3 and the left slider 181 and the right slider 182 contact the chassis sheet metal 3; as the upper mold assembly 1 continues to move downward, the left bending punch 171 and the right bending punch 172 respectively perform inward bending processing on the chassis sheet metal 3. During this process, the left limiting boss 1811 of the left slider 181 and the right limiting boss 1821 of the right slider 182 limit the inner bending height H1 of the folded edge of the chassis sheet metal 3, and the left limiting vertical surface 1711 and the left limiting horizontal surface 1712 of the left bending punch 171 and the right limiting vertical surface 1721 and the right limiting horizontal surface 1722 of the right bending punch 172 cooperate and limit The outer bending dimensions H2 and L of the chassis sheet metal 3. When the upper mold assembly 1 and the lower mold assembly 2 are completely closed, the left slider 181, the right slider 182, the left bending punch 171, and the right bending punch 172 prevent the bending part of the chassis sheet metal 3 from moving freely, thereby ensuring the bending size accuracy of the chassis sheet metal 3; after the symmetrical internal bending operation of the chassis sheet metal 3 is completed, the upper mold assembly 1 moves upward and performs the mold opening action. When the stripper plate 15 moves upward synchronously with the upper mold assembly 1, the left slider 181 and the right slider 182 will slide inward relative to the stripper plate 15, thereby causing the two limit sliders to gradually move inward, so that the left limit boss 1811 and the right limit boss 1821 retreat from the folding position of the chassis sheet metal 3, thereby facilitating demolding and making it easier for staff to take materials.

[0036] Based on the above, it can be seen that through the above structural design, the chassis bending and forming device of the first embodiment can effectively realize the symmetrical internal bending processing of the chassis sheet metal part 3, and can also effectively ensure the dimensional accuracy, and the chassis bending and forming device has the advantage of novel structural design.

[0037] Example 2, as Figure 2 and Figure 3 As shown, the difference between the second embodiment and the first embodiment is that each limiting slider can be slidably installed on the stripping plate 15 in the following manner. Specifically, the stripping plate 15 is respectively provided with an active cavity corresponding to each limiting slider, and the right side wall of the left active cavity is provided with a left guide bar (not shown in the figure) extending gradually from bottom to top toward the upper left, and the left side wall of the right active cavity is provided with a right guide bar (not shown in the figure) extending gradually from bottom to top toward the upper right;

[0038] The left slider 181 corresponds to the left guide bar and is provided with a left guide groove (not shown in the figure), and the left slider 181 is slidably installed on the left guide bar through the left guide groove; the right slider 182 corresponds to the right guide bar and is provided with a right guide groove (not shown in the figure), and the right slider 182 is slidably installed on the right guide bar through the right guide groove.

[0039] Embodiment 3: The difference between this embodiment 3 and embodiment 1 is that the stripping plate 15 is equipped with a slider anti-slipping part. When each limit slider moves down to the lower limit position relative to the stripping plate 15, the limit slider abuts against the slider anti-slipping part.

[0040] By providing the slider anti-dropping member, the third embodiment can effectively prevent each limiting slider from falling off the stripping plate 15, thereby improving the overall stability and reliability.

[0041] Example 4, as Figure 2 and Figure 3 As shown, the difference between the fourth embodiment and the first embodiment is that a buffer spring 191 and a vertically arranged movable ejector pin 192 located below the buffer spring 191 are respectively installed corresponding to each limit slider between the upper mold base 11 and the upper pad 12, and the lower end of each buffer spring 191 is respectively in contact with the upper end of the corresponding movable ejector pin 192.

[0042] The lower end of each movable ejector pin 192 passes through the upper clamping plate 13 and the stop plate 14 and abuts against the upper end surface of the limiting slider on the corresponding side.

[0043] During the mold opening action and the upward movement of the stripping plate 15, the buffer spring 191 elastically presses the limit slider through the movable ejector pin 192, so that the limit slider remains in contact with the chassis sheet metal 3; during this process, the left slider 181 and the right slider 182 slide relative to the stripping plate respectively, and the left slider 181 and the right slider 182 gradually move inward, so that the left limit protrusion of the left slider 181 and the right limit protrusion of the right slider 182 retreat from the folding position of the chassis sheet metal 3, so as to achieve smooth demolding.

[0044] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A chassis bending and forming device, comprising an upper die assembly (1), a lower die assembly (2) located below the upper die assembly (1), the upper die assembly (1) comprising an upper die base (11), an upper pad (12), an upper clamping plate (13), a stop plate (14), and a stripper plate (15) arranged in sequence from top to bottom, the upper die base (11), the upper pad (12), and the upper clamping plate (13) being screwed in sequence, the stop plate (14) being screwed to the stripper plate (15), and a compression spring (161) being installed between the upper clamping plate (13) and the stop plate (14) for pressing the stop plate (14) downward; The lower die assembly (2) comprises a lower die base (21), a lower pad (22), and a lower die plate (23) which are screwed in sequence from bottom to top; Its characteristics are: Two bending punches are fixedly installed between the upper clamping plate (13) and the upper pad (12), and are arranged symmetrically on the left and right and extend vertically respectively. Each bending punch vertically penetrates the stop plate (14) and the stripping plate (15). The two bending punches are a left punch and a right punch, respectively. The lower end of the left punch is provided with a left limiting vertical surface (1711) with a normal direction facing horizontally to the right and a left limiting horizontal surface (1712) with a normal direction facing vertically downward. The lower end of the right punch is provided with a right limiting vertical surface (1721) with a normal direction facing horizontally to the left and a right limiting horizontal surface (1722) with a normal direction facing vertically downward. The stripping plate (15) is provided with two symmetrically arranged limit sliders between the two bending punches, and each limit slider is slidably installed on the stripping plate (15) in an oblique direction; the two limit sliders are a left slider (181) and a right slider (182) in sequence, and the lower end of the left slider (181) is provided with a left limit boss (1811) protruding horizontally toward the left, and the lower end of the right slider (182) is provided with a right limit boss (1821) protruding horizontally toward the right.

2. The chassis bending and forming device according to claim 1, characterized in that: The stripping plate (15) is provided with a movable cavity corresponding to each of the limit sliders, and the right side wall of the left movable cavity is provided with a left guide strip extending from bottom to top gradually toward the upper left, and the left side wall of the right movable cavity is provided with a right guide strip extending from bottom to top gradually toward the upper right; The left slider (181) is provided with a left guide groove corresponding to the left guide bar, and the left slider (181) is slidably mounted on the left guide bar through the left guide groove; the right slider (182) is provided with a right guide groove corresponding to the right guide bar, and the right slider (182) is slidably mounted on the right guide bar through the right guide groove.

3. The chassis bending and forming device according to claim 1, characterized in that: The stripping plate (15) is equipped with a slider anti-slipping piece. When each of the limit sliders moves downward to a lower limit position relative to the stripping plate (15), the limit slider abuts against the slider anti-slipping piece.

4. The chassis bending and forming device according to claim 1, characterized in that: A buffer spring (191) and a vertically arranged movable ejector pin (192) are respectively installed between the upper die base (11) and the upper pad (12) corresponding to each of the limit sliders, and the lower end of each buffer spring (191) is respectively in contact with the upper end of the corresponding movable ejector pin (192); The lower end of each movable ejector pin (192) passes through the upper clamping plate (13) and the stop plate (14) and abuts against the upper end surface of the limiting slider on the corresponding side.

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