Bottom shell bending die

Abstract

The present invention discloses a bottom shell bending die, which includes a lower die base, an upper die base and a bending mechanism. The lower die base is provided with a first stripping plate and a second stripping plate. Both the first stripping plate and the second stripping plate are floatingly arranged on the lower die base in the vertical direction, and the first stripping plate is located above the second stripping plate. The upper die base is slidably mounted above the lower die base in the vertical direction. The bending mechanism includes a first forming seat, a second forming seat and a forming block. The first forming seat is arranged on the second stripping plate, the second forming seat is arranged on the lower die base, and the forming block is arranged on the upper die base. When the upper die base moves downward towards the lower die base, the forming block cooperates with the first forming seat to perform a first bending on the workpiece, and the forming block cooperates with the second forming seat to perform a second bending on the workpiece. The bottom shell bending die of the present invention can achieve two bends, thereby reducing the number of dies, lowering the cost and improving the production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of molds, and more particularly to a bottom shell bending mold. Background Art

[0002] The housing of some electrical equipment is generally composed of a U-shaped plate and two side plates. Among them, to ensure machining accuracy, when machining the U-shaped plate, it needs to be bent twice, that is, first pre-bent to 45°, and then bent to 90°. In the related art, the machining of the U-shaped plate is achieved through two processes, that is, bending is carried out separately by two molds. On the one hand, the number of molds is large and the cost is high. On the other hand, the workpiece needs to be positioned twice, the operation is cumbersome, and the efficiency is low. Summary of the Invention

[0003] An object of the present invention is to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a bottom shell bending mold, which can realize two bends, thereby reducing the number of molds, lowering the cost, and improving the production efficiency.

[0004] The bottom shell bending mold according to an embodiment of the present invention includes: a lower die base provided with a first stripping plate and a second stripping plate, the first stripping plate and the second stripping plate are both floatingly arranged in the vertical direction on the lower die base, and the first stripping plate is located above the second stripping plate; an upper die base slidably mounted in the vertical direction above the lower die base; a bending mechanism including a first forming seat, a second forming seat and a forming block, the first forming seat is arranged on the second stripping plate, the second forming seat is arranged on the lower die base, and the forming block is arranged on the upper die base; when the upper die base moves towards the lower die base, the forming block cooperates with the first forming seat to bend the workpiece once, and the forming block cooperates with the second forming seat to bend the workpiece twice.

[0005] The above technical solution has at least the following beneficial effects: By arranging the first stripping plate and the second stripping plate which are floatingly arranged on the lower die base, during processing, the upper die base first drives the workpiece and the first stripping plate to move downward, and the first bend of the workpiece is realized by the cooperation of the forming block and the first forming seat. After the first stripping plate contacts the second stripping plate, the upper die base drives the workpiece, the first stripping plate and the second stripping plate to continue to move downward, and the second bend of the workpiece is realized by the cooperation of the forming block and the second forming seat, so as to realize two bends on one mold to process the required workpiece, without being carried out in separate processes, reducing the number of times of positioning the workpiece, facilitating processing, effectively improving the production efficiency, and without developing multiple sets of molds, which is beneficial to reducing the production cost.

[0006] According to some embodiments of the present invention, the first forming seat and the forming block are respectively arranged on corresponding first forming surfaces, the first forming surfaces are inclined, and the included angle between the first forming surface and the horizontal plane is θ, satisfying: 40° ≤ θ ≤ 60°.

[0007] According to some embodiments of the present invention, the second forming seat and the forming block are respectively provided with corresponding second forming surfaces, and the second forming surfaces are arranged vertically.

[0008] According to some embodiments of the present invention, the forming block is slidably mounted on the upper die base in the horizontal direction. The forming block is provided with a first wedge portion, and the lower die base is provided with a first wedge driving block that cooperates with the first wedge portion. The first wedge driving block is adapted to drive the forming block to move towards the first forming seat and the second forming seat.

[0009] According to some embodiments of the present invention, the upper die base is provided with a first elastic member, and the first elastic member is connected to the forming block and is adapted to drive the forming block to move in a direction away from the first forming seat or the second forming seat.

[0010] According to some embodiments of the present invention, the upper die base is provided with a first wear-resistant plate, and the forming block slides along the end face of the first wear-resistant plate.

[0011] According to some embodiments of the present invention, the second forming seat is slidably mounted on the lower die base in the horizontal direction, and the sliding direction of the second forming seat is parallel to the sliding direction of the forming block. The second forming seat is provided with a second wedge portion, and the upper die base is provided with a second wedge driving block that cooperates with the second wedge portion. The second wedge driving block is adapted to drive the second forming seat to move towards the forming block.

[0012] According to some embodiments of the present invention, the lower die base is provided with a second elastic member, and the second elastic member is connected to the second forming seat and is adapted to drive the second forming seat to move in a direction away from the forming block.

[0013] According to some embodiments of the present invention, the lower die base is provided with a second wear-resistant plate, and the second forming seat slides along the end face of the second wear-resistant plate.

[0014] According to some embodiments of the present invention, both the first stripping plate and the second stripping plate are slidably mounted on the lower die base in the up-down direction. The first stripping plate is connected with a third elastic member, and the acting force of the third elastic member on the first stripping plate is upward. The second stripping plate is connected with a fourth elastic member, and the acting force of the fourth elastic member on the second stripping plate is upward.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0017] Figure 1 It is a schematic structural diagram of the bottom shell bending die in the embodiment of the present invention;

[0018] Figure 2 It is a schematic structural diagram of the first forming seat in the embodiment of the present invention;

[0019] Figure 3 It is a schematic structural diagram of the bottom shell after the first bending in the embodiment of the present invention;

[0020] Figure 4 It is a schematic structural diagram of the bottom shell after the second bending in the embodiment of the present invention.

[0021] Reference numerals:

[0022] Lower die base 100; First stripper plate 110; Second stripper plate 120; First wedge drive block 130; Second elastic member 140; Second wear-resistant plate 150; Third elastic member 160; Fourth elastic member 170;

[0023] Upper die base 200; First elastic member 210; First wear-resistant plate 220; Second wedge drive block 230; Press block 240;

[0024] Bending mechanism 300; First forming seat 310; First forming surface 311; Second forming seat 320; Second forming surface 321; Second wedge portion 322; Forming block 330; First wedge portion 331;

[0025] Bottom shell 400; Bottom plate 410; Folded plate 420. Detailed implementation manners

[0026] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to visually and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be construed as a limitation on the protection scope of the present invention.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present invention.

[0028] In the description of the present invention, the meaning of "several" is one or more, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the corresponding number, while understandings such as "above", "below", "within", etc. include the corresponding number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as "arrangement", "installation", "connection", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0030] Refer to Figures 1 to 4 As shown, the embodiment of the present invention provides a bottom shell bending die, which includes a lower die base 100 and an upper die base 200, and a bending mechanism 300 is arranged between the lower die base 100 and the upper die base 200. The bottom shell bending die is used for processing the bottom shell 400 of some electrical equipment, such as the bottom shell 400 of a water heater, the bottom shell 400 of a washing machine, etc. The bottom shell 400 generally has a U-shaped structure, including a bottom plate 410 and folding plates 420 connected to both ends of the bottom plate 410, and the folding plates 420 face the same side of the bottom plate 410 and are perpendicular to the bottom plate 410.

[0031] Refer to Figure 1 As shown, it can be understood that the upper die base 200 is arranged above the lower die base 100, and the upper die base 200 is slidably arranged in the up and down direction. For example, the upper die base 200 and the lower die base 100 are connected by a guide sleeve and a guide post, and the guiding is accurate.

[0032] Refer to Figure 1As shown, it can be understood that the lower die base 100 is provided with a first stripping plate 110 and a second stripping plate 120. Among them, the first stripping plate 110 is located above the second stripping plate 120, and both the first stripping plate 110 and the second stripping plate 120 are floatingly arranged in the up and down direction. Specifically, both the first stripping plate 110 and the second stripping plate 120 are slidably installed above the lower die base 100 in the up and down direction. The lower end of the first stripping plate 110 is connected to a third elastic member 160, and the lower end of the third elastic member 160 is connected to the lower die base 100. The acting force of the third elastic member 160 on the first stripping plate 110 is upward. Therefore, under the acting force of the third elastic member 160, the first stripping plate 110 can be supported. At the same time, the first stripping plate 110 can be driven downward by an external force to compress the third elastic member 160. Therefore, the first stripping plate 110 floats in the up and down direction. Similarly, the lower end of the second stripping plate 120 is connected to a fourth elastic member 170, and the lower end of the fourth elastic member 170 is connected to the lower die base 100. The acting force of the fourth elastic member 170 on the second stripping plate 120 is upward. Therefore, under the acting force of the fourth elastic member 170, the second stripping plate 120 can be supported. At the same time, the second stripping plate 120 can be driven downward by an external force to compress the fourth elastic member 170. Therefore, the second stripping plate 120 floats in the up and down direction. The third elastic member 160 and the fourth elastic member 170 can be nitrogen springs, which have the advantages of small volume, large elastic force, stable operation, and long service life.

[0033] Referring to Figure 1 As shown, it can be understood that the bending mechanism 300 includes a first forming seat 310, a second forming seat 320, and a forming block 330. Specifically, there are two first forming seats 310, two second forming seats 320, and two forming blocks 330. The two first forming seats 310 are both installed at the upper end of the second stripping plate 120 and are respectively located on the left and right sides of the first stripping plate 110. The two second forming seats 320 are both installed on the lower die base 100 and are respectively located on the left and right sides of the second stripping plate 120. At the same time, the second forming seat 320 on the left is located on the left side of the first forming seat 310 on the left, and the second forming seat 320 on the right is located on the right side of the first forming seat 310 on the right. The two forming blocks 330 are installed at the lower end of the upper die base 200. At the same time, the two forming blocks 330 are arranged at intervals in the left and right direction and are located between the two first forming seats 310. Generally speaking, a pressing block 240 is also provided on the lower end surface of the upper die base 200. The pressing block 240 is located between the two forming blocks 330 and above the first stripping plate 110.

[0034] Referring to Figure 3 and Figure 4As shown, it can be understood that the forming block 330 is adapted to cooperate with the first forming seat 310 to perform the first bending on the bottom shell 400, and the forming block 330 is also adapted to cooperate with the second forming seat 320 to perform the second bending on the bottom shell 400.

[0035] Referring to Figure 1 As shown, it can be understood that the first forming seats 310, the second forming seats 320 and the forming blocks 330 on the left and right sides respectively perform bending processing on the folding plates 420 at both ends of the bottom shell 400, with high efficiency.

[0036] By arranging the first stripping plate 110 and the second stripping plate 120 with floating settings on the lower die base 100, during processing, the sheet material is positioned on the first stripping plate 110. The upper die base 200 moves downward and presses the sheet material tightly against the first stripping plate 110 through the pressing block 240. As the upper die base 200 moves downward, the upper die base 200 first drives the sheet material and the first stripping plate 110 to move downward, and the third elastic member 160 is compressed. The forming block 330 cooperates with the first forming seat 310 to perform the first bending on both ends of the sheet material, obtaining the initially bent folding plate 420. After the first stripping plate 110 contacts the second stripping plate 120, as the upper die base 200 further moves downward, the upper die base 200 drives the sheet material, the first stripping plate 110 and the second stripping plate 120 to continue moving downward, and the forming block 330 cooperates with the second forming seat 320 to perform the second bending on the sheet material, so that the bending angle of the folding plate 420 meets the processing requirements, such as making the folding plate 420 perpendicular to the bottom plate 410. Thus, two bends are achieved on one die to process the required bottom shell 400, without the need for separate processes, reducing the number of times of positioning the bottom shell 400, facilitating processing, effectively improving production efficiency, and without the need to develop multiple sets of dies, which is beneficial to reducing production costs.

[0037] Referring to Figure 2 As shown, it can be understood that the first forming seats 310 and the forming blocks 330 are respectively provided with corresponding first forming surfaces 311. Specifically, the upper ends of the opposite sides of the two first forming seats 310 and the lower ends of the back sides of the two forming blocks 330 are respectively provided with first forming surfaces 311 arranged obliquely upward. Define the angle between the first forming surface 311 and the horizontal plane as θ, satisfying: 40° ≤ θ ≤ 60°. For example, θ = 40°, θ = 50° or θ = 60°, etc., so as to obtain folding plates 420 with corresponding angles after the first bending. When θ < 40°, the first bending angle of the folding plate 420 is too small, resulting in too large a second bending angle and a large force required for the second bending, affecting the bending accuracy of the second bending; when θ > 60°, the first bending angle is too large. Similarly, a large force is required for the first bending, affecting the bending accuracy of the first bending.

[0038] Referring to Figure 1As shown, it can be understood that the second forming seats 320 and the forming blocks 330 are respectively provided with correspondingly arranged second forming surfaces 321. Specifically, the second forming surfaces 321 are provided on the facing sides of the two second forming seats 320 and the back sides of the two forming blocks 330. The second forming surfaces 321 are arranged vertically, for example, perpendicular to the horizontal plane, or the second forming surfaces 321 of the second forming seats 320 are slightly inclined and downward. It is easy to understand that the first forming surface 311 on the forming block 330 is connected to the second forming surface 321. Therefore, the folding plate 420 can be further bent to the required angle through the second forming surface 321, such as the folding plate 420 being perpendicular to the bottom plate 410.

[0039] Referring to Figure 1 As shown, it can be understood that the two forming blocks 330 are slidably mounted on the upper die base 200 in the left-right direction. The lower ends of the opposite sides of the two forming blocks 330 are respectively provided with first wedge-shaped portions 331, such as wedge-shaped surfaces. The lower die base 100 is provided with two first wedge-shaped driving blocks 130 respectively cooperating with the two first wedge-shaped portions 331. When the upper die base 200 moves downward, the two first wedge-shaped driving blocks 130 drive the two forming blocks 330 to move away from each other, so that the two forming blocks 330 respectively cooperate with the two first forming seats 310 or the two second forming seats 320 to clamp the folding plates 420 at both ends of the bottom plate 410, realizing the bending process of the folding plates 420. The structure is simple and the bending is accurate.

[0040] Referring to Figure 1 As shown, it can be understood that the upper die base 200 is provided with two first elastic members 210. The two first elastic members are respectively connected to the two forming blocks 330. The acting force of the left first elastic member 210 on the left forming block 330 is toward the right, and the acting force of the right first elastic member 210 on the right forming block 330 is toward the left. Therefore, when the upper die base 200 moves upward, the first wedge-shaped driving block 130 removes the acting force on the forming block 330. Under the acting forces of the two first elastic members 210, the two forming blocks 330 can be driven to move toward each other for demoulding. The first elastic member 210 can be a nitrogen spring.

[0041] Referring to Figure 1 As shown, it can be understood that the upper die base 200 is provided with a first wear-resistant plate 220. The first wear-resistant plate 220 is embedded in the lower end surface of the upper die base 200. The two forming blocks 330 slide along the lower end surface of the first wear-resistant plate 220, so that the wear can be reduced and the service life can be extended.

[0042] Referring to Figure 1As shown, it can be understood that two second forming seats 320 are slidably mounted on the lower die base 100 in the left-right direction. Second wedge-shaped portions 322, such as wedge-shaped surfaces, are respectively provided on the opposite sides of the two second forming seats 320. The upper die base 200 is provided with two second wedge-shaped driving blocks 230 respectively cooperating with the two second wedge-shaped portions 322. When the upper die base 200 moves downward, the two second wedge-shaped driving blocks 230 move downward with the upper die base 200, and the two second wedge-shaped driving blocks 230 drive the two second forming seats 320 to move towards each other. Thus, the two forming blocks 330 respectively cooperate with the two second forming seats 320 to clamp the folding plates 420 at both ends of the bottom plate 410, realizing further bending processing of the folding plates 420. The structure is simple and the bending is accurate.

[0043] Referring to Figure 1 As shown, it can be understood that the lower die base 100 is provided with two second elastic members 140. The two second elastic members 140 are respectively connected to the two second forming seats 320. The acting force of the left second elastic member 140 on the left second forming seat 320 is to the left, and the acting force of the right second elastic member 140 on the right second forming seat 320 is to the right. Therefore, when the upper die base 200 moves upward, the second wedge-shaped driving block 230 removes the acting force on the second forming seat 320. Under the acting force of the two second elastic members 140, the two second forming seats 320 can be driven to move away from each other for demoulding. The second elastic member 140 can be a nitrogen spring.

[0044] Referring to Figure 1 As shown, it can be understood that the lower die base 100 is provided with a second wear-resistant plate 150. The second wear-resistant plate 150 is embedded in the lower end surface of the lower die base 100, and the two second forming seats 320 slide along the upper end surface of the second wear-resistant plate 150, thereby reducing wear and extending the service life.

[0045] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made without departing from the spirit of the present invention within the knowledge scope of those of ordinary skill in the art.

Claims

1. Bottom shell bending die, characterized in that, Comprising: A lower die base, provided with a first stripper plate and a second stripper plate. Both the first stripper plate and the second stripper plate are floatingly arranged in the lower die base in the up-and-down direction, and the first stripper plate is located above the second stripper plate. An upper die base, slidably mounted above the lower die base in the up-and-down direction. A bending mechanism, including a first forming seat, a second forming seat and a forming block. The first forming seat is arranged on the second stripper plate, the second forming seat is arranged on the lower die base, and the forming block is arranged on the upper die base. Wherein, the first forming seat and the forming block are respectively provided with corresponding first forming surfaces, the first forming surfaces are arranged obliquely, and the included angle between the first forming surface and the horizontal plane is θ, satisfying: 40° ≤ θ ≤ 60°. The second forming seat and the forming block are respectively provided with corresponding second forming surfaces, and the second forming surfaces are arranged vertically. The forming block is slidably mounted on the upper die base in the horizontal direction. The forming block is provided with a first wedge-shaped portion, and the lower die base is provided with a first wedge-shaped driving block cooperating with the first wedge-shaped portion. The first wedge-shaped driving block is adapted to drive the forming block to move towards the first forming seat and the second forming seat. The upper die base is provided with a first elastic member, the first elastic member is connected to the forming block and is adapted to drive the forming block to move in a direction away from the first forming seat or the second forming seat. The second forming seat is slidably mounted on the lower die base in the horizontal direction, and the sliding direction of the second forming seat is parallel to the sliding direction of the forming block. The second forming seat is provided with a second wedge-shaped portion, and the upper die base is provided with a second wedge-shaped driving block cooperating with the second wedge-shaped portion. The second wedge-shaped driving block is adapted to drive the second forming seat to move towards the forming block. The lower die base is provided with a second elastic member, the second elastic member is connected to the second forming seat and is adapted to drive the second forming seat to move in a direction away from the forming block. When the upper die base moves towards the lower die base, the forming block cooperates with the first forming seat to perform a first bending on the workpiece, and the forming block cooperates with the second forming seat to perform a second bending on the workpiece.

2. The bottom shell bending die according to claim 1, characterized in that: The upper die base is provided with a first wear-resistant plate, and the forming block slides along the end face of the first wear-resistant plate.

3. The bottom shell bending die according to claim 1, characterized in that: The lower die base is provided with a second wear-resistant plate, and the second forming seat slides along the end face of the second wear-resistant plate.

4. The bottom shell bending die according to claim 1, wherein: Both the first stripper plate and the second stripper plate are slidably mounted on the lower die base in the up-and-down direction. The first stripper plate is connected with a third elastic member, and the acting force of the third elastic member on the first stripper plate is upward. The second stripper plate is connected with a fourth elastic member, and the acting force of the fourth elastic member on the second stripper plate is upward.

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