Scratch-proof paddle forming die with rollers

Abstract

The utility model discloses a scratch-proof paddle forming die with rollers, which comprises an upper die and a lower die, the upper die and the lower die are matched with each other to press a plate to form a paddle, the lower die comprises a plurality of die plates, each die plate is provided with a cavity, and the plurality of die plates are overlapped with each other to connect the cavities on each die plate to form a complete cavity. The upper die is matched with the complete cavity to press and form the blade, notches are formed in the sides, close to the cavity, of the templates, a guide part is arranged on the notch of the uppermost template, filling parts are arranged on the notches of the other templates, the guide part is used for being matched with the plate to reduce friction, and the filling parts are used for filling the notches. According to the technical scheme, the lower die is arranged to be of the structure that the multiple die plates are stacked to form the complete cavity, the opening size and the overall specification of the complete cavity can be adjusted by increasing or decreasing the number of the die plates, the replaceable guide parts and the replaceable filling parts are arranged on the die plates, and indentations can be reduced in the paddle forming process.

Description

Technical Field

[0001] The utility model relates to a blade forming mould with a roller for preventing scratches. Background Art

[0002] Agitators are widely used in industrial production and everyday life, including chemical, food, and pharmaceutical industries. The performance and quality of their core component, the paddle, play a decisive role in the mixing effect. Currently, agitator paddles are commonly manufactured using a process that press-forms sheet materials using a mold. Traditional paddle forming molds are typically designed as a complete, integrated structure. During manufacturing, the internal cavity dimensions of these molds are precisely machined to specific paddle specifications. Once the mold is formed, the resulting paddle dimensions remain fixed.

[0003] When the market demands blades of varying sizes, manufacturers must design and manufacture specialized molds for each size. This not only significantly increases mold manufacturing costs, but also lengthens production cycles and reduces efficiency. Furthermore, storing a large number of molds of varying sizes takes up significant storage space, increasing management costs. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a blade forming mold with a roller to prevent scratches, which controls the size of the opening by adjusting the number of template overlaps, and reduces the indentation of the plate during the forming process by providing a guide part on the notch of the template.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a blade forming mold with a roller anti-scratch function, comprising an upper mold and a lower mold, the upper mold and the lower mold cooperate with each other to press the plate to form a blade, the lower mold comprises a plurality of templates, each template is provided with a cavity, and the multiple templates are superimposed on each other for the cavity on each template to be connected to form a complete cavity, the upper mold cooperates with the complete cavity to press and form the blade, the template is provided with a notch on the side close to the cavity, the notch of the top template is provided with a guide part, and the notches of the remaining templates are provided with a filling part, the guide part is used to cooperate with the plate to reduce friction and prevent the plate from generating indentations when bending, and the filling part is used to fill the notch.

[0006] As a further improvement of the present invention, positioning blocks are provided at the bottom of the guide portion and the filling portion, and positioning grooves for installing the positioning blocks are provided in the notch. The positioning blocks are installed in the positioning grooves to limit the guide portion and the filling portion.

[0007] As a further improvement of the present invention, the guide part includes a base, a rotating shaft, and a roller. The roller is sleeved on the rotating shaft and fixed by a key connection. The base is provided with an opening for installing the rotating shaft and the roller. The two sides of the rotating shaft are respectively rotatably connected to the two sides of the opening.

[0008] As a further improvement of the present invention, elastic circlips are provided on both sides of the roller, the elastic circlips are sleeved on the rotating shaft and the two ends of the elastic circlips are respectively in contact with the roller and the base.

[0009] As a further improvement of the present invention, adjacent templates are provided with limiting structures to limit the misalignment of the cavities on the templates.

[0010] As a further improvement of the present invention, the limiting structure includes several protrusions arranged on the template, and grooves are also provided at the positions corresponding to the protrusions of adjacent templates. When multiple templates are superimposed, the positions of the protrusions and the grooves correspond, and the templates are limited from being misaligned after being plugged in.

[0011] As a further improvement of the present invention, the cross-sectional shape of the protrusion is trapezoidal, with the upper base facing the groove, and the shape and size of the groove are adapted to the protrusion.

[0012] As a further improvement of the present invention, a thin rubber pad is provided in the groove, and the thin rubber pad covers the inner wall surface of the groove.

[0013] The beneficial effects of the utility model are as follows: by setting the lower mold as a structure in which a complete cavity is formed by stacking several templates, the opening size and overall specifications of the complete cavity can be adjusted by increasing or decreasing the number of templates, thereby achieving the purpose of producing blades of different sizes and specifications with the same mold, and the template is provided with a replaceable guide part and filling part, so that the indentation of the blade can be reduced during the molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of a hidden upper mold in an embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of a template for an embodiment of the present utility model.

[0017] Reference numerals: 1, upper die; 2, lower die; 3, template; 4, cavity; 5, notch; 6, guide portion; 7, filling portion; 8, positioning block; 9, positioning groove; 10, base; 11, rotating shaft; 12, roller; 13, elastic retaining ring; 14, protrusion; 15, groove. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0019] Reference Figure 1-3 As shown, a blade forming mold with a roller anti-scratch function includes an upper mold 1 and a lower mold 2. The upper mold 1 and the lower mold 2 cooperate with each other to press the plate to form a blade. The lower mold 2 includes a plurality of templates 3, each of which is provided with a cavity 4, and multiple templates 3 are superimposed on each other to connect the cavity 4 on each template 3 to form a complete cavity 4. The upper mold 1 cooperates with the complete cavity 4 to press and form the blade. The template 3 is provided with a notch 5 on one side close to the cavity 4. The notch 5 of the top template 3 is provided with a guide part 6, and the notches 5 of the remaining templates 3 are provided with a filling part 7. The guide part 6 is used to cooperate with the plate to reduce friction and reduce indentations when the plate is bent. The filling part 7 is used to fill the notch 5.

[0020] The lower die 2 is assembled by stacking multiple templates 3. The cavity 4 of each template 3 is joined sequentially along a direction perpendicular to the stack of templates 3. A complete cavity 4 is formed by stacking templates 3 corresponding to the required cavity size on the lower die 2, thereby cooperating with the upper die 1 to form the sheet material. A guide 6 is provided to convert sliding friction into rolling friction, reducing friction and indentation during the forming process. A filler 7 is used to fill the gaps 5 of the templates 3, restoring the template 3 to its original shape. In practice, each template 3 is equipped with a guide 6 and a filler 7. Depending on production requirements, the guide 6 is installed in the gap 5 of the topmost template 3, while the filler 7 is installed in the gaps 5 of the remaining templates 3. To produce blades with different opening sizes, the length and opening size of the complete cavity 4 can be adjusted by adding or removing templates 3. For example, when three templates 3 are stacked, the opening width of the complete cavity 4 is A; when five templates 3 are stacked, the opening width is B (A≠B, and B>A). The upper mold 1 moves toward the lower mold 2 through a driving device (such as a hydraulic cylinder, an electric push rod, etc.), exerting pressure on the plate placed on the lower mold 2, causing the plate to plastically deform to fit the contour of the cavity 4, completing the blade molding. In this process, the stackability of the templates 3 makes it easy to adjust the mold specifications. There is no need to remanufacture the entire set of molds. Different size requirements can be adapted simply by increasing or decreasing the number of templates 3, reducing mold replacement time, improving production flexibility, and reducing the waste of resources caused by fixed mold specifications. In this solution, the complete cavity 4 is U-shaped, with the opening facing the upper mold 1, and the cavity 4 on each template 3 has a uniform transition with the cavity 4 on the adjacent template 3.

[0021] The bottom of the guide part 6 and the filling part 7 are both provided with a positioning block 8, and the notch 5 is provided with a positioning groove 9 for installing the positioning block 8. The positioning block 8 is installed in the positioning groove 9 to limit the guide part 6 and the filling part 7. The cooperation between the positioning block 8 and the positioning groove 9 ensures that the guide part 6 and the filling part 7 are accurately installed to prevent the mold from failing due to deviation.

[0022] The guide portion 6 includes a base 10, a rotating shaft 11, and a roller 12. The roller 12 is sleeved on the rotating shaft 11 and fixed by a key connection. The base 10 is provided with an opening for installing the rotating shaft 11 and the roller 12. The two sides of the rotating shaft 11 are rotatably connected to the two sides of the opening. In this solution, elastic rings 13 are provided on both sides of the roller 12. The elastic ring 13 is sleeved on the rotating shaft 11 and the two ends of the elastic ring 13 are respectively in contact with the roller 12 and the base 10.

[0023] The roller 12 is fixed to the rotating shaft 11 through a key connection to guide the plate, effectively reducing the friction between the plate and the bottom and avoiding scratching the surface of the plate. By arranging elastic retaining rings 13 on both sides of the roller 12, the axial movement of the roller 12 can be effectively limited to prevent the roller 12 from moving during operation.

[0024] The misalignment of the cavities 4 on the templates 3 is limited by a limiting structure between adjacent templates 3. The limiting structure includes a plurality of protrusions 14 arranged on the template 3, and grooves 15 are also provided at positions corresponding to the protrusions 14 of adjacent templates 3. When multiple templates 3 are superimposed, the positions of the protrusions 14 and the grooves 15 correspond, and the misalignment of the templates 3 is limited after insertion.

[0025] The limiting structure is provided to ensure that during the stacking of the templates 3, the cavities 4 of each template 3 remain precisely aligned in the horizontal direction (perpendicular to the stacking direction), and the cavities 4 remain stable during the pressing process. The rapid positioning between the templates 3 is achieved through the plug-in fit of the protrusions 14 and the grooves 15.

[0026] The cross-section of the protrusion 14 is trapezoidal, with the upper base facing the groove 15 . The shape and size of the groove 15 are adapted to the protrusion 14 . In this embodiment, a thin rubber pad is provided in the groove 15 to cover the inner wall surface of the groove 15 .

[0027] The trapezoidal protrusion 14 is used to facilitate rapid introduction into the groove 15, thereby improving mold assembly efficiency. A thin rubber pad is provided in the groove 15 to provide a buffer for the protrusion 14 while making the connection between the protrusion 14 and the groove 15 tighter.

[0028] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A blade forming mold with a roller to prevent scratches, comprising an upper mold and a lower mold, wherein the upper mold and the lower mold cooperate with each other to press a plate to form a blade, characterized in that: The lower mold includes several templates, each of which is provided with a cavity, and after multiple templates are superimposed on each other, the cavities on each template are connected to form a complete cavity. The upper mold cooperates with the complete cavity to press-form the paddle. The templates are provided with notches on the side close to the cavity. The notch of the top template is provided with a guide part, and the notches of the remaining templates are provided with filling parts. The guide part is used to cooperate with the plate to reduce friction and reduce indentations generated by the plate when bending. The filling part is used to fill the gap.

2. The blade forming mold with roller anti-scratch according to claim 1, characterized in that: The bottom of the guide part and the filling part are both provided with positioning blocks, and the notch is provided with a positioning groove for installing the positioning block. The positioning block is installed in the positioning groove to limit the guide part and the filling part.

3. The blade forming mold with roller anti-scratch according to claim 2, characterized in that: The guide portion includes a base, a rotating shaft, and a roller. The roller is sleeved on the rotating shaft and fixed by a key connection. An opening for installing the rotating shaft and the roller is provided on the base. Both sides of the rotating shaft are rotatably connected to both sides of the opening.

4. The blade forming mold with roller anti-scratch according to claim 3, characterized in that: Elastic circlips are provided on both sides of the roller. The elastic circlips are sleeved on the rotating shaft and the two ends of the elastic circlips are respectively in contact with the roller and the base.

5. The blade forming mold with roller anti-scratch according to claim 1, characterized in that: The misalignment of the cavities on the templates is limited by the limiting structure between the adjacent templates.

6. The blade forming mold with roller anti-scratch according to claim 5, characterized in that: The limiting structure includes several protrusions arranged on the template, and grooves are also arranged at the positions corresponding to the protrusions of adjacent templates. When multiple templates are superimposed, the positions of the protrusions and the grooves correspond, and the templates are limited from being misplaced after being plugged in.

7. The blade forming mold with roller anti-scratch according to claim 6, characterized in that: The cross-section of the protrusion is trapezoidal, with the upper base facing the groove, and the shape and size of the groove are adapted to the protrusion.

8. The blade forming mold with roller anti-scratch according to claim 7, characterized in that: A thin rubber pad is provided in the groove, and the thin rubber pad covers the inner wall surface of the groove.

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