Paddle forming mold with adjustable opening and equipment

Abstract

The utility model discloses a paddle forming die with an adjustable opening, which comprises a first die and a second die, the first die and the second die are matched with each other to press a plate to form a paddle, the first die comprises a plurality of die plates, each die plate is provided with a cavity, and the first die and the second die are matched with each other. After the plurality of templates are overlapped with each other, the cavities on the templates are connected to form a complete cavity; and the second mold is matched with the complete cavity to press and form the paddle. According to the scheme, the opening can be adjusted, the size can meet more production requirements, and multiple purposes of one mold can be achieved.

Description

Technical Field

[0001] The utility model relates to blade production, in particular to a blade forming die with adjustable opening and equipment. 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 and equipment with adjustable opening, which can adjust the opening and adapt the size to more production needs, so as to achieve multiple uses of one mold.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blade forming mold with an adjustable opening, comprising a first mold and a second mold, the first mold and the second mold cooperate with each other to press the plate to form a blade, the first mold comprises a plurality of templates, each template is provided with a cavity, and after the multiple templates are superimposed on each other, the cavity on each template is connected to form a complete cavity; the second mold cooperates with the complete cavity to press and form the blade.

[0006] As a further improvement of the present invention, the complete cavity is U-shaped, with its opening facing the second mold, and the cavity on each template is evenly transitioned to the cavity on the adjacent template.

[0007] As a further improvement of the present invention, the inner wall of the complete cavity is parabolic in shape and opens toward the second mold, and the cavity on each template is evenly transitioned to the cavity on the adjacent template.

[0008] 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.

[0009] 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.

[0010] As a further improvement of the present invention, the cross-sectional shape of the protrusion and the groove is trapezoidal, with the upper base facing the groove, and the shape and size of the groove are adapted to the protrusion.

[0011] As a further improvement of the present invention, the cross-sectional shape of the protrusion is trapezoidal, and the upper base faces the groove. The groove is square for the protrusion to be inserted, and gaps are formed on both sides of the upper base. A buffer pad is provided in the groove. When the template is superimposed in place, the protrusion squeezes the buffer pad and squeezes and deforms the buffer pad into the gaps on both sides of the upper base.

[0012] As a further improvement of the present invention, the buffer pad has a raised portion in the middle, which is used to cooperate with the upper bottom edge of the protrusion for extrusion, and after extrusion, both sides of the buffer pad are deformed into the gap formed by the protrusion and the inner wall of the groove.

[0013] As a further improvement of the present invention, a scale mark is provided on the side of each template, and the scale mark corresponds to the size of the complete cavity formed when different numbers of templates are superimposed.

[0014] As a further improvement of the present invention, a paddle forming device with an adjustable opening includes a driving device and a mold, wherein the mold adopts the paddle forming mold with an adjustable opening as described in any one of the above items, and the driving device is used to drive the second mold to move toward or away from the first mold.

[0015] The beneficial effects of the present invention are as follows: by configuring the first mold to have a structure in which a complete cavity is formed by stacking a number of 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, avoiding the problem that traditional fixed-specification molds need to be manufactured separately for different sizes, and reducing mold manufacturing costs and warehousing management costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the directional groove implementation method of the utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of the directional groove implementation method of the utility model;

[0018] Figure 3 This is a schematic diagram of the main structure of the trapezoidal groove implementation method of the present invention;

[0019] Figure 4 This is a schematic diagram of the main structure of the trapezoidal groove implementation method of the present invention;

[0020] Figure 5 for Figure 1 A magnified view of part A in FIG;

[0021] Figure 6 for Figure 3 Enlarged view of part B in .

[0022] Reference numerals: 1. first mold; 11. template; 12. cavity; 2. second mold; 3. limiting structure; 31. protrusion; 32. groove; 33. buffer pad; 331. raised portion; 4. scale mark. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0024] Reference Figure 1-6 As shown, a blade forming mold with an adjustable opening in this embodiment includes a first mold 1 and a second mold 2. The first mold 1 includes a plurality of templates 11, each of which is provided with a cavity 12, and the plurality of templates 11 are superimposed on each other to connect the cavity 12 on each template 11 to form a complete cavity; the second mold 2 cooperates with the complete cavity to press-form the blade.

[0025] The templates 11 are stacked together, and the cavities 12 of each template 11 are joined sequentially perpendicular to the stacking direction of the templates 11. A complete cavity is formed by stacking the number of templates 11 corresponding to the desired cavity 12 size on the first mold 1. To produce blades with different opening sizes, the length and opening size of the complete cavity can be adjusted by adding or reducing the number of templates 11. For example, when three templates 11 are stacked, the opening width of the complete cavity is A; when five templates 11 are stacked, the opening width becomes B (A ≠ B, and B > A). The second mold 2 is moved toward the first mold 1 via a drive device (such as a hydraulic cylinder or electric push rod), applying pressure to the sheet material placed in the complete cavity, causing it to plastically deform and conform to the contours of the cavity 12, completing the blade molding process. The stackability of the templates 11 facilitates mold size adjustment, eliminating the need to remanufacture the entire mold set. Simply adding or reducing the number of templates 11 can adapt to different size requirements. This reduces mold changeover time, improves production flexibility, and reduces the resource waste associated with fixed mold specifications.

[0026] In a specific solution, the complete cavity is U-shaped, with its opening facing the second mold 2 , and the cavity 12 on each template 11 has a uniform transition to the cavity 12 on the adjacent template 11 .

[0027] The opening direction of the complete U-shaped cavity is consistent with the pressing direction of the second mold 2, ensuring that the second mold 2 can directly apply pressure to the plate to make it enter the U-shaped cavity 12. The edge of the cavity 12 of each template 11 transitions smoothly to ensure that the edge is on the U-shaped trajectory. When the cavities 12 of adjacent templates 11 are spliced, the transition area forms a continuous and smooth curved surface to avoid steps or sharp turns. When the plate is pressed, the U-shaped cavity 12 defines the cross-sectional profile of the blade, and the evenly transitioned connection of the cavity 12 causes the plate to be subjected to uniform force during the forming process. The U-shaped structure is suitable for the basic shape requirements of most agitator blades. By adjusting the number of templates 11 to change the depth and opening width of the U-shaped cavity 12, U-shaped blades of different specifications can be produced, expanding the scope of application of the mold and achieving multiple uses of one mold.

[0028] The above description is a U-shaped complete cavity, which can also be described with reference to the following structure. The inner wall of the complete cavity is parabolic in shape, and the opening is toward the second mold 2, and the cavity 12 on each template 11 has a uniform transition with the cavity 12 on the adjacent template 11.

[0029] The inner wall of the cavity 12 of each template 11 is a part of a parabola, and after being superimposed, a complete parabola-shaped inner wall is formed. When the second mold 2 presses the plate, the plate is formed by fitting the parabola inner wall.

[0030] In order to ensure the pressing effect, the adjacent templates 11 are provided with limiting structures 3 to limit the misalignment of the cavities 12 on the templates 11 .

[0031] The setting of the limiting structure 3 ensures that the cavities 12 of each template 11 remain precisely aligned in the horizontal direction (perpendicular to the stacking direction) during the stacking of the templates 11 and keeps the cavities 12 stable during the pressing process.

[0032] For example, the retaining structure 3 can be a mating structure consisting of a boss and a groove 32 on the edge of the template 11. When the templates 11 are stacked, the boss engages the groove 32 of the adjacent template 11, forming a mechanical stop that prevents the templates 11 from moving horizontally. Without the retaining structure 3, the templates 11 may misalign the mold cavity 12 due to errors during manual stacking or the pressing process, causing the complete mold cavity to distort or shift, resulting in dimensional deviations outside the tolerance range after the blade is formed.

[0033] Preferably, the limiting structure 3 includes several protrusions 31 arranged on the template 11, and grooves 32 are also provided at the positions of the protrusions 31 of adjacent templates 11. When multiple templates 11 are superimposed, the positions of the protrusions 31 and the grooves 32 correspond, and the templates 11 are limited from being misaligned after being plugged in.

[0034] The protrusion 31 and the groove 32 are clearance-fitted (for example, the clearance is 0.02-0.05 mm). The protrusion 31 is cylindrical (such as a cylinder, prism, etc.), and the groove 32 is a corresponding cylindrical hole. Taking the cylindrical protrusion 31 and the circular groove 32 as an example, the diameter of the protrusion 31 is 10 mm, and the inner diameter of the groove 32 is 10.03 mm, ensuring that the protrusion 31 can be smoothly inserted into the groove 32 while providing a certain degree of positioning accuracy. During the stacking process of the template 11, the protrusion 31 of the upper template 11 is aligned with the groove 32 of the lower template 11 and inserted vertically downward. The lateral movement of the template 11 is limited by the circumferential contact between the protrusion 31 and the groove 32. At the same time, the stacking direction is fixed by the weight of the template 11 itself or an external clamping device. This structure is simple and easy to process. The protrusion 31 and the groove 32 can be formed by CNC milling or stamping processes, which is relatively low in cost. The plug-in limiting method facilitates the rapid assembly and disassembly of the template 11. When the number of templates 11 needs to be adjusted, the protrusions 31 and grooves 32 can be easily plugged in and out, which improves the efficiency of mold adjustment and ensures that the cavity 12 remains aligned during the pressing process, avoiding problems such as uneven wall thickness or shape distortion of the blades due to misalignment.

[0035] The protrusion 31 and the groove 32 can also be implemented in the following scheme: the protrusion 31 is strip-shaped, the groove 32 is also strip-shaped, and the groove 32 runs through both sides of the template 11. The shapes of the protrusion 31 and the groove 32 can be set according to needs as long as the purpose of this scheme can be achieved.

[0036] In a further preferred embodiment, the cross-sectional shape of the protrusion 31 and the groove 32 is trapezoidal, with the upper base facing the groove 32 , and the shape and size of the groove 32 are adapted to the protrusion 31 .

[0037] The upper base width of the trapezoidal protrusion 31 is smaller than the lower base width, and the groove 32 is a corresponding trapezoidal groove, whose inner wall slope is consistent with that of the protrusion 31. This trapezoidal structure provides an automatic guiding function when the template 11 is superimposed. Once the protrusion 31 and the groove 32 are initially aligned, the lateral force generated by the trapezoidal slope will automatically push the template 11 into alignment, reducing the difficulty of alignment during manual assembly.

[0038] The following setting can also be used for implementation. The cross-sectional shape of the protrusion 31 is trapezoidal, and the upper base faces the groove 32. The groove 32 is square for the protrusion 31 to be inserted, and gaps are formed on both sides of the upper base. A buffer pad 33 is provided in the groove 32. When the template 11 is superimposed in place, the protrusion 31 squeezes the buffer pad 33 and squeezes and deforms the buffer pad 33 into the gaps on both sides of the upper base.

[0039] The notches on either side of the upper base of the trapezoidal protrusion 31 form a gap with the square groove 32, and the buffer pad 33 is made of an elastic material (such as silicone, polyurethane, etc.) and fills the bottom of the groove 32. When the templates 11 are stacked, the trapezoidal protrusion 31 is inserted into the square groove 32. As the templates 11 gradually approach, the lower base of the protrusion 31 first contacts the buffer pad 33. Continued pressure causes the buffer pad 33 to elastically deform. When the upper base of the protrusion 31 reaches the notch position, the two sides of the buffer pad 33 are squeezed into the notch space. The elastic deformation of the buffer pad 33 can absorb the impact force when multiple templates 11 are stacked, reducing the wear or deformation of the templates 11 and protrusion 31 caused by rigid collision. For example, when the templates 11 are quickly stacked, the buffer pad 33 can mitigate the impact of falling and prevent burrs from forming on the edges of the protrusion 31 and the groove 32 due to collision. At the same time, the deformation of the buffer pad 33 fills the gap between the protrusion 31 and the groove 32, eliminating the slight shaking that may exist in the traditional trapezoidal limiting structure 3, making the template 11 more tightly connected and further improving the positioning accuracy of the cavity 12.

[0040] Specifically, the buffer pad 33 has a raised portion 331 in the middle, which is used to cooperate with the upper bottom edge of the protrusion 31 for extrusion. After extrusion, the two sides of the buffer pad 33 are deformed and enter the gap formed by the protrusion 31 and the inner wall of the groove 32.

[0041] The raised portion 331 is conveniently fitted with the protrusion 31, which makes the extrusion deformation effect faster. When the raised portion 331 contacts the protrusion 31, the extrusion deformation begins, and then the cushioning pad 33 begins to fit into the notches on both sides of the protrusion 31. In addition, the cushioning effect of the mold falling is generated more quickly.

[0042] In a further setting, in order to facilitate the user to observe the blade size adapted after the current template 11 is superimposed, a scale mark 4 is set on the side of each template 11, and the scale mark 4 corresponds to the complete cavity size formed when different numbers of templates 11 are superimposed.

[0043] The scale mark 4 is made by laser engraving or etching and is marked on the side of the template 11. The scale mark 4 can directly use the mark of the scale ruler, which is convenient for users to quickly overlay the template 11 according to their needs.

[0044] The above describes the structure of the mold, which can be applied to the equipment to form the following technical solutions:

[0045] A paddle forming device with an adjustable opening includes a driving device and a mold. The mold adopts a paddle forming mold with an adjustable opening as any of the improved solutions mentioned above. The driving device is used to drive the second mold 2 to move toward or away from the first mold 1.

[0046] The driving device is connected to the second mold 2 through a flange connection or a slider guide mechanism. For example, a servo motor is used to drive the ball screw pair, and the screw nut drives the second mold 2 to move linearly along the guide rail. When the paddle needs to be pressed, the driving device controls the second mold 2 to move toward the first mold 1 at a set speed until it is closed with the first mold 1, applying constant pressure to the plate and maintaining it for a certain period of time to fully form the plate; after the forming is completed, the driving device moves in the opposite direction, driving the second mold 2 to retreat, so as to facilitate the removal of the formed paddle. The modular design of the equipment makes mold replacement convenient. Combined with the template 11 superposition function of the adjustable opening mold, it can quickly switch to produce blades of different specifications, adapting to the flexible production needs of multiple varieties and small batches, and further reducing production costs and production cycles.

[0047] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. 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 adjustable opening, comprising a first mold and a second mold, wherein the first mold and the second mold cooperate with each other to press a plate to form a blade, characterized in that: The first mold includes several templates, each of which is provided with a cavity, and after the multiple templates are superimposed on each other, the cavities on each template are connected to form a complete cavity; the second mold cooperates with the complete cavity to press-form the blade.

2. The blade forming mold with adjustable opening according to claim 1, characterized in that: The complete cavity is U-shaped and opens toward the second mold, and the cavity on each template is evenly transitioned to the cavity on the adjacent template.

3. The blade forming mold with adjustable opening according to claim 1, characterized in that: The inner wall of the complete cavity is in a parabolic shape and opens toward the second mold, and the cavity on each template is uniformly transitioned to the cavity on the adjacent template.

4. The blade forming mold with adjustable opening according to claim 1, 2 or 3, characterized in that: The misalignment of the cavities on the templates is limited by the limiting structure between the adjacent templates.

5. The blade forming mold with adjustable opening according to claim 4, 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.

6. The blade forming mold with adjustable opening according to claim 5, characterized in that: The cross-section of the protrusion and the groove is trapezoidal, with the upper base facing the groove, and the shape and size of the groove are adapted to the protrusion.

7. The blade forming mold with adjustable opening according to claim 5, characterized in that: The cross-sectional shape of the protrusion is trapezoidal, and the upper base faces the groove. The groove is square for the protrusion to be inserted, and notches are formed on both sides of the upper base. A buffer pad is provided in the groove. When the template is superimposed in place, the protrusion squeezes the buffer pad and squeezes and deforms the buffer pad into the notches on both sides of the upper base.

8. The blade forming mold with adjustable opening according to claim 7, characterized in that: The buffer pad has a raised portion in the middle, which is used to cooperate with the upper bottom edge of the protrusion for extrusion, and after extrusion, both sides of the buffer pad are deformed and enter into the gap formed by the protrusion and the inner wall of the groove.

9. The blade forming mold with adjustable opening according to claim 1, characterized in that: A scale mark is provided on the side of each template, and the scale mark corresponds to the size of a complete cavity formed when different numbers of templates are superimposed.

10. A blade forming device with adjustable opening, characterized in that: It comprises a driving device and a mold, wherein the mold adopts the paddle forming mold with adjustable opening as described in any one of claims 1 to 9, and the driving device is used to drive the second mold to move toward or away from the first mold.

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