Bending die

Abstract

The utility model relates to the technical field of product manufacturing, and discloses a bending die which comprises a lower die assembly and an upper die assembly, and the lower die assembly comprises a lower die base and a lower die plate; the lower template is used for placing a plate; the upper die assembly comprises an upper die base and an upper die plate. The peripheral frame of the upper die plate is a bending stamping part, and the upper die plate moves downwards to enable the plate to be vertically bent downwards along the two adjacent side faces of the lower die plate to form bending angles. An insert notch groove is formed in at least one corner of the upper side of the lower die plate, a burr pressing insert is arranged in the insert notch groove, the burr pressing insert is provided with two outer side faces located on the two sides of the corner of the lower die plate, the two outer side faces of the burr pressing insert are provided with chamfering parts, and the chamfering parts are used for conducting burr pressing on the edges of wrap angles of a bent plate. According to the bending die, the burr pressing insert is additionally arranged at the corner position of the lower die plate, the two working procedures of right-angle bending and burr pressing are combined, the corner of a plate is subjected to burr pressing treatment while bending is achieved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of product manufacturing, in particular to a bending die. Background Art

[0002] In the TV manufacturing industry, the molding process of the TV corner backboard is an important link to ensure the appearance quality and structural strength of the TV. The traditional TV corner backboard molding process usually includes seven main processes, namely M1 molding, M2 shaping + four-side trimming, M3 corner trimming + four-side burring, M4 bending, M5 beveling, M6 side pushing and M7 corner shaping.

[0003] However, in the actual production process, the traditional molding process has some problems that need to be solved. Especially in the process of M3 corner trimming + four-side burring, despite the corner trimming and four-side burring, there will still be some burrs on the cut surface of the back plate. These burrs not only affect the appearance quality of the product, but may also have an adverse effect on the processing accuracy and product quality in subsequent processes.

[0004] Since the production line is designed with seven steps and is subject to production efficiency and cost considerations, the back panel cannot be burred after the M4 bending step. This means that there may be burrs on the surface of the back panel after bending, which will undoubtedly further affect the overall quality of the TV and user experience.

[0005] Therefore, how to effectively solve the burr problem generated during the molding process of the TV corner back panel while ensuring production efficiency and cost has become a technical problem that the TV manufacturing industry urgently needs to solve.

[0006] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0007] In response to the problems pointed out in the background technology, the present application provides a bending mold, which combines the two processes of right-angle bending and burring, thereby achieving burring of the back panel during bending, thereby effectively solving the burr problem generated during the molding process of the TV corner back panel.

[0008] In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions:

[0009] In some embodiments of the present application, a bending mold is provided, comprising:

[0010] A lower die assembly, comprising a lower die base and a lower die plate disposed on the upper side of the lower die base; the lower die plate is used to place a plate;

[0011] The upper die assembly comprises an upper die seat and an upper die plate arranged at the lower side of the upper die seat; the surrounding frames of the upper die plate are bending and stamping parts, and the upper die plate moves downward to vertically bend the plate downward along two adjacent side surfaces of the lower die plate to form a bending angle;

[0012] At least one corner of the upper side of the lower template is provided with a block entry notch, a burr pressing block is provided in the block entry notch, the burr pressing block has two outer side surfaces located on both sides of the corner of the lower template, and the two outer side surfaces of the burr pressing block have chamfered portions, and the chamfered portions are used to burr the edges of the corners of the plate after the plate is bent. By providing the burr pressing block, the two processes of right-angle bending and burr pressing are combined, so that the burr pressing of the back plate is achieved while bending.

[0013] In some embodiments of the present application, the burr pressing block is provided with a first mounting hole, the block notch groove is provided with a second mounting hole corresponding to the first mounting hole, and a fastener can pass through the first mounting hole and the second mounting hole to lock the burr pressing block in the block notch groove. The burr pressing block is detachably fixed to the lower template by screws, and the bending gap can be adjusted.

[0014] In some embodiments of the present application, an upper mold notch groove is provided at the inner corner position of the upper mold plate, an upper mold entry block is provided in the upper mold notch groove, and the upper mold entry block cooperates with the burr pressing entry block to bend the plate.

[0015] In some embodiments of the present application, a third mounting hole is provided on the upper die entry block, and a fourth mounting hole is provided on the upper die notch groove corresponding to the third mounting hole, and a fastener can pass through the third mounting hole and the fourth mounting hole to lock the burr entry block in the upper die notch groove. The upper die entry block is detachably fixed to the upper die plate by screws, and the bending gap can be adjusted.

[0016] In some embodiments of the present application, a boss portion protruding outward is provided on the upper portion of the side surface of the upper mold entry block, a groove portion is provided on the side wall of the upper mold notch groove corresponding to the boss portion, the groove portion extends upward to the upper surface of the upper mold, and the upper mold entry block is hung in the groove portion through the boss portion;

[0017] The upper die seat is fixedly connected to the upper die plate through a connecting block, and the connecting block is pressed on the upper die entry block. The upper die entry block is detachably fixed to the upper die plate through a hanging platform structure, and the bending gap can be adjusted.

[0018] In some embodiments of the present application, a gasket is fixed on the inner side of the upper die entry block to adjust the bending gap between the upper die entry block and the burr pressing entry block.

[0019] In some embodiments of the present application, the upper mold assembly also includes an upper release plate, which is arranged on the inner side of the upper mold plate and is used to be pressed on the plate when the upper and lower molds are closed.

[0020] In some embodiments of the present application, the lower mold assembly further includes a lower foot and a lower supporting plate, the lower mold base is fixed on the lower foot, and the lower foot is fixed on the lower supporting plate.

[0021] In some embodiments of the present application, the upper mold assembly further includes an upper foot and an upper support plate, the upper foot is fixed to the lower side of the upper support plate, and the upper mold base is fixed to the lower side of the upper foot.

[0022] In some embodiments of the present application, the inclination angle of the chamfered portion ranges from 30° to 60°, preferably 45°.

[0023] Compared with the prior art, the advantages and positive effects of the utility model are:

[0024] In the bending die in the above embodiment, by adding a burr pressing block at the corner position of the lower template, the two processes of right-angle bending and burr pressing are combined, so that the burr processing of the corners of the plate can be performed while bending. Under the premise of ensuring production efficiency and cost, the burr problem generated in the forming process of the TV corner back panel is effectively solved.

[0025] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model 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 some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 A schematic structural diagram of a bending mold according to some embodiments is shown;

[0028] Figure 2 shows a front view of a bending die according to some embodiments;

[0029] Figure 3 A three-dimensional view of a bending die according to some embodiments is shown, wherein a front connection block is not shown;

[0030] Figure 4 Shows Figure 3 Enlarged view of point A in the middle;

[0031] Figure 5 shows a cross-sectional view of a bending die according to some embodiments;

[0032] Figure 6 A schematic diagram showing the cooperation between the upper mold plate and the lower mold plate when the bending mold is closed according to some embodiments;

[0033] Figure 7 A schematic diagram of the structure of a burr pressing block in a bending die according to some embodiments is shown;

[0034] Figure 8 An assembly diagram of an upper mold corner portion and an upper mold entry block in a bending mold according to some embodiments is shown;

[0035] Fig. 9 A schematic diagram of the structure of an upper die entry block in a bending die according to some embodiments is shown;

[0036] Fig.10 A schematic diagram of the structure of the corner portion of the upper template in a bending mold according to some embodiments is shown;

[0037] Description of reference numerals:

[0038] 100-upper die assembly;

[0039] 110-upper supporting plate; 120-upper pad; 130-upper die seat; 140-upper die plate; 141-upper die notch groove; 142-groove portion; 150-upper stripping plate; 160-upper die entry block; 161-boss portion; 170-connecting block;

[0040] 200 - lower die assembly; 210 - lower support plate; 220 - lower pad; 230 - lower die base; 240 - lower pad; 250 - lower template; 260 - burr pressing block; 261 - first mounting hole; 262 - chamfered portion. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0047] like Figure 1-Figure 10 As shown, some embodiments of the present application provide a bending mold.

[0048] The bending mold is used in the forming process of the angled back panel and the bending process of the angled back panel.

[0049] The bending die bends the two adjacent sides of the plate vertically downward to form a bending angle.

[0050] The bending die includes an upper die assembly 100 and a lower die assembly 200 .

[0051] The upper mold assembly 100 includes an upper mold base 130 and an upper mold plate 140 disposed on the upper side of the lower mold base 230 .

[0052] The upper mold base 130 is a key part connecting the upper mold plate 140 and the top of the mold. The main function of the upper mold base 130 is to ensure the stability and accuracy of the mold.

[0053] The four sides of the upper template 140 are formed into a bending stamping portion, that is, in this embodiment, the upper template 140 is a bending punch.

[0054] The lower mold assembly 200 includes a lower mold base 230 and a lower mold plate 250 disposed on the upper side of the lower mold base 230 .

[0055] The lower die base 230 is the main body of the lower die assembly 200 and is used to fix and support components such as the lower die plate 250 and the lower pad 240 .

[0056] The lower template 250 is used to place the plate. In this embodiment, the lower template 250 is a bending die, which corresponds to and cooperates with the upper template 140 to complete the bending operation.

[0057] During the bending process, a certain gap is formed between the upper template 140 and the lower template 250 to accommodate the plate. The plate is placed on the lower template 250, and the upper mold assembly 100 moves downward. The plate is bent by the bending stamping part on the upper template 140. The plate is bent vertically downward along the two adjacent sides of the lower template 250 to form a bending angle.

[0058] Among them, Figure 3 and Figure 4 As shown, a block-entry notch is provided at at least one corner position of the upper side of the lower template 250. In this embodiment, a block-entry notch is provided at one corner position of the lower template 250 for example.

[0059] A burr pressing entry block 260 is arranged in the entry block notch groove.

[0060] The burr pressing block 260 has two outer side surfaces located at two side surfaces of the corner of the lower template 250, and the upper surface of the burr pressing block 260 is flush with the upper surface of the lower template 250. The burr pressing block 260 is generally an L-shaped structure.

[0061] The two outer side surfaces of the burring block 260 have chamfered portions 262, which are used to burr the edges of the corners of the plate after bending, that is, the chamfered portions 262 of the burring block 260 are protruding outward from the side of the lower template 250.

[0062] When bending, the upper mold assembly 100 moves downward, and the plate is bent by the bending punching part on the upper mold plate 140. The plate is vertically bent downward along the two adjacent sides of the lower mold plate 250 to form a bending angle. When the plate forms the bending angle, it is folded to the position of the burr pressing block 260, and the chamfering part 262 chamfers the sharp burr.

[0063] The above-mentioned bending mold combines the two processes of right-angle bending and burring by adding a burring block 260 at the corner position of the lower template 250, thereby realizing the burring treatment of the corners of the plate during bending. Under the premise of ensuring production efficiency and cost, the burr problem generated in the forming process of the TV corner back panel is effectively solved.

[0064] In some embodiments of the present application, the chamfered portion has an inclined surface angle (the angle between the inclined surface and the horizontal plane) ranging from 30° to 60°. The chamfered surface angle may be 30°, 45°, or 50°. It is understood that if the chamfered surface angle is too large or too small, it is not easy to chamfer.

[0065] In some embodiments of the present application, the burr pressing block 260 is detachably connected to the lower template 250 .

[0066] Specifically, a first mounting hole 261 is defined in the burring block 260 .

[0067] The block entry notch groove is provided with a second mounting hole corresponding to the first mounting hole 261 .

[0068] Fasteners such as screws can pass through the first mounting hole 261 and the second mounting hole to lock the burr pressing block 260 in the block notch groove.

[0069] The burr pressing block 260 is detachable. By replacing the burr pressing block 260 or the quick-release welding gasket, the bending gap can be adjusted to allow more or less material to be extruded at the bending position of the product, thereby adjusting the problem of light leakage or excess material at the corners.

[0070] In some embodiments of the present application, see Fig.10 ( Fig.10 Only a partial structure of the upper template is shown), an upper template notch groove 141 is provided at the inner corner position of the upper template 140.

[0071] An upper die entry block 160 is disposed in the upper die notch groove 141 , and the upper die entry block 160 and the burr pressing entry block 260 cooperate to bend the plate.

[0072] The upper mold block 160 is detachably connected to the upper mold plate 140 .

[0073] Specifically, a third mounting hole is opened on the upper mold block 160 .

[0074] The upper mold notch groove 141 defines a fourth mounting hole corresponding to the third mounting hole.

[0075] The fastener can pass through the third mounting hole and the fourth mounting hole to lock the burr pressing block 260 in the upper die notch groove 141 .

[0076] The upper mold entry block 160 is detachable. By replacing the upper mold entry block 160 or grinding or welding the gasket, the bending gap between the upper mold entry block 160 and the burr pressing block 260 can be adjusted when the mold is closed, so that more or less material is extruded at the bending position of the product, thereby adjusting the problem of light leakage or excess material at the corners.

[0077] In some other embodiments of the present application, Figure 8-Figure 10 As shown, the upper mold block and the upper mold plate 140 are detachably connected via a hanging platform structure.

[0078] Specifically, Fig. 9 As shown, a boss portion 161 protruding outward is provided on the upper side of the upper mold insert 160 .

[0079] The boss portion 161 extends downward along the upper surface of the upper mold block 160 to a certain height (less than the height of the upper mold block 160 ).

[0080] like Fig.10 As shown, a groove portion 142 is provided on the side wall of the upper mold notch groove 141 corresponding to the boss portion 161 , and the groove portion 142 extends upward to the upper surface of the upper mold, and the upper mold insert 160 is hung in the groove portion 142 through the boss portion 161 .

[0081] See also Figure 5The upper mold base 130 and the upper mold plate 140 are fixedly connected by a connecting block 170. At the same time, the connecting block 170 is pressed on the upper mold entry block 160, so that the displacement of the upper mold entry block 160 in the upper and lower directions can be limited, and the upper mold entry block 160 can be fixed in the upper mold notch groove 141.

[0082] When the upper mold entry block 160 needs to be replaced, it is only necessary to disassemble the upper mold plate 140 and take out the upper mold entry block 160 from the upper mold plate 140. The upper mold entry block 160 is easy to install and remove.

[0083] In some embodiments of the present application, Figure 2 and Figure 5 As shown, the upper mold assembly 100 further includes an upper stripping plate 150 .

[0084] The upper stripping plate 150 is disposed inside the upper mold plate 140 and is used to be pressed onto the plate when the upper and lower molds are closed.

[0085] The upper stripping plate 150 can help the plate to be smoothly separated from the lower template 250 after the bending is completed.

[0086] During the bending process, the upper stripping plate 150 may be used in conjunction with components such as a push rod to ensure that the plate can be smoothly removed from the mold.

[0087] In some embodiments of the present application, Figure 2 and Figure 5 As shown, the upper mold assembly 100 further includes an upper support plate 110 .

[0088] The main function of the upper support plate 110 is to stably mount the entire upper die assembly 100 on the working table of the bending machine, ensure that the die and the press working table are firmly clamped, and avoid deviation or shaking during the bending process.

[0089] In some embodiments of the present application, Figure 2 and Figure 5 As shown, the upper mold assembly 100 further includes an upper foot 120 .

[0090] The upper foot 120 is mainly used to adjust the overall height of the mold to ensure that the closing height of the mold is within the travel range of the bending machine; at the same time, it provides necessary space for the spring box structure in the mold to ensure that the mold can run smoothly during the closing and opening process.

[0091] In some embodiments of the present application, Figure 2 and Figure 5 As shown, the lower mold assembly 200 further includes a lower pad 240 .

[0092] The lower pad 240 is disposed on the lower side of the lower mold plate 250 and fixed on the lower mold base 230 .

[0093] The bottom pad 240 can enhance the hardness and strength of the mold, and prevent the mold from being deformed or damaged due to high pressure or frequent use during use.

[0094] In some embodiments of the present application, the lower mold assembly 200 further includes a lower foot 220 .

[0095] The lower foot 220 mainly serves to increase the height of the mold so that the mold closing height is within the range of the punch stroke.

[0096] In some embodiments of the present application, Figure 2 and Figure 5 As shown, the lower mold assembly 200 further includes a lower supporting plate 210 .

[0097] The lower mold base 230 is fixed on the lower foot 220 , and the lower foot 220 is fixed on the lower supporting plate 210 .

[0098] The main function of the lower support plate 210 is to bear the weight of the mold itself, prevent the mold from vibrating and deforming, and ensure the stability of the mold.

[0099] The working principle of the bending die of this application is as follows:

[0100] The working principle of the bending mold is mainly to achieve the bending of the plate through the relative movement of the upper mold assembly 100 and the lower mold assembly 200.

[0101] During the bending process, the upper die assembly 100 (including the upper die plate 140 ) moves downward under the drive of the bending machine, forming a certain gap with the lower die assembly 200 (including the lower die plate 250 ).

[0102] The sheet is placed in the gap between the upper and lower templates 250. As the upper mold assembly 100 continues to press downward, the sheet undergoes plastic deformation under the action of the upper template 140 (bending punch) and the lower template 250 (bending die), thereby achieving bending.

[0103] At the same time, the burring block 260 performs burring processing on the bent corner edges of the plate.

[0104] After the bending is completed, the plate can be smoothly removed from the mold with the help of components such as the upper stripping plate 150.

[0105] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

[0106] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A bending die, comprising: A lower die assembly, comprising a lower die base and a lower die plate disposed on the upper side of the lower die base; the lower die plate is used to place a plate; The upper die assembly comprises an upper die seat and an upper die plate arranged at the lower side of the upper die seat; the surrounding frames of the upper die plate are bending and stamping parts, and the upper die plate moves downward to vertically bend the plate downward along two adjacent side surfaces of the lower die plate to form a bending angle; It is characterized in that At least one corner position on the upper side of the lower template is provided with a block entry notch groove, a burr pressing block is provided in the block entry notch groove, the burr pressing block has two outer side surfaces located on both sides of the corner of the lower template, the two outer side surfaces of the burr pressing block have chamfered portions, and the chamfered portions are used to burr the edges of the corners of the plate after it is bent.

2. The bending die according to claim 1, characterized in that: The burr pressing block has a first mounting hole, the block notch groove has a second mounting hole corresponding to the first mounting hole, and a fastener can pass through the first mounting hole and the second mounting hole to lock the burr pressing block in the block notch groove.

3. The bending die according to claim 2, characterized in that: An upper die notch groove is arranged at the inner corner position of the upper die plate, an upper die entry block is arranged in the upper die notch groove, and the upper die entry block cooperates with the burr pressing entry block to bend the plate.

4. The bending die according to claim 3, characterized in that: A third mounting hole is provided on the upper die block, and a fourth mounting hole is provided in the upper die notch groove corresponding to the third mounting hole. A fastener can pass through the third mounting hole and the fourth mounting hole to lock the burr edge block in the upper die notch groove.

5. The bending die according to claim 3, characterized in that: The upper part of the side surface of the upper mold entry block is provided with a boss portion protruding outward, and the side wall of the upper mold notch groove is provided with a groove portion corresponding to the boss portion, and the groove portion extends upward to the upper surface of the upper mold, and the upper mold entry block is hung in the groove portion through the boss portion; The upper die base is fixedly connected to the upper die plate via a connecting block, and the connecting block is pressed onto the upper die entry block.

6. The bending die according to claim 4 or 5, characterized in that: A gasket is fixed on the inner side of the upper die entry block to adjust the bending gap between the upper die entry block and the burr pressing entry block.

7. The bending die according to claim 1, characterized in that: The upper mold assembly also includes an upper stripping plate, which is arranged on the inner side of the upper mold plate and is used to be pressed on the plate when the upper and lower molds are closed.

8. The bending die according to claim 1, characterized in that: The lower mold assembly also includes a lower pad and a lower supporting plate, the lower mold base is fixed on the lower pad, and the lower pad is fixed on the lower supporting plate.

9. The bending die according to claim 1, characterized in that: The upper mold assembly also includes an upper pad and an upper supporting plate, wherein the upper pad is fixed to the lower side of the upper supporting plate, and the upper mold base is fixed to the lower side of the upper pad.

10. The bending die according to claim 1, characterized in that: The inclination angle of the chamfered portion is in the range of 30°-60°.

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