A mold locking mechanism with adjustable pre-tightening force

Abstract

This utility model relates to an adjustable preload mold locking mechanism. The adjustable preload mold locking mechanism includes a placement frame, on which are arranged a first outer locking rod, a second outer locking rod, and a third outer locking rod in a triangular arrangement. The first, second, and third outer locking rods on the placement frame form a uniform annular clamping force along the outer circumference of the circular mold. The first and second inner locking rods, symmetrically distributed inside the placement frame, form a uniform radial support force on the inner wall of the cavity when the mold is opened. This achieves the following: the outer triangular locking rods form an annular clamping force to fix the position of the mold, while the symmetrical inner locking rods form a radial support force to support the mold cavity. The two forces counterbalance each other radially along the mold. The clamping force of the outer locking rods prevents the mold from expanding outwards due to the opening of the inner locking rods, while the support force of the inner locking rods prevents the mold from concave inwards due to the clamping of the outer locking rods, thus achieving full-dimensional clamping protection for the circular cavity mold.

Description

Technical Field

[0001] This utility model relates to the field of mold processing technology, and in particular to a mold locking mechanism with adjustable preload. Background Technology

[0002] During mold processing, stable locking of the mold is a core element in ensuring product processing accuracy, production efficiency, and operational safety. As the manufacturing industry develops towards diversification and customization, the widespread application of circular molds (especially those with internal cavity structures) in production scenarios such as pipe fittings and container products places higher demands on the adaptability, preload controllability, and operational flexibility of their locking mechanisms.

[0003] Currently, traditional mechanisms mostly adopt a single external clamping or internal support structure, which can only fix the mold in a single dimension, either externally or internally. For circular molds with cavities, if only external clamping is used for locking, the internal cavity of the mold is prone to deformation due to uneven external clamping force. If internal support is used for locking, the lack of external limit on the mold can easily lead to radial displacement during processing. The dual locking requirement requires multiple sets of equipment, which increases equipment cost and operational complexity. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing mechanisms often use a single external clamping or internal support structure, which can only fix the mold in a single dimension, either externally or internally. This invention provides a mold locking mechanism with adjustable preload. The clamping force of the external locking rod prevents the mold from expanding outward due to the opening of the internal locking rod, while the supporting force of the internal locking rod prevents the mold from concave inward due to the clamping of the external locking rod, thus achieving full-dimensional clamping and protection for circular cavity molds.

[0005] To achieve the above objectives, this utility model provides a mold locking mechanism with adjustable preload, including a placement frame. The placement frame is provided with a first outer locking rod, a second outer locking rod, and a third outer locking rod arranged in a triangular pattern. The lower end of the third outer locking rod is connected to a first electric telescopic rod installed on the placement frame. The placement frame is provided with a first inner locking rod and a second inner locking rod that are symmetrically distributed inside. Both the first inner locking rod and the second inner locking rod are connected to the second electric telescopic rod, which is connected to the bottom of the placement frame.

[0006] As a further description of the above technical solution: the bottom of the placement frame is connected to two rotating frames, and the rotating frames are provided with a flipping shaft and a rotating shaft inside. The flipping shaft is hinged to the third electric telescopic rod, and both ends of the rotating shaft are connected to the protective frame. The bottom of the third electric telescopic rod is connected to the protective frame.

[0007] As a further description of the above technical solution: the placement frame is provided with a first support roller, a second support roller and a third support roller, all of which are rotatably connected to the mounting frame.

[0008] As a further description of the above technical solution: rubber sleeves are fitted on the first outer locking rod, the second outer locking rod and the third outer locking rod.

[0009] As a further description of the above technical solution: the bottom of the protective frame is connected to a mounting base.

[0010] As a further description of the above technical solution: two third electric telescopic rods are provided.

[0011] As a further description of the above technical solution: the first support roller, the second support roller, and the third support roller are arranged in a triangular pattern.

[0012] As a further description of the above technical solution: the first outer locking rod and the second outer locking rod are detachably connected to the placement frame through a connecting plate, and the third outer locking rod is detachably connected to the drive end of the first electric telescopic rod through a connecting plate.

[0013] The above technical solution has the following advantages or beneficial effects:

[0014] This invention utilizes a first, second, and third outer locking rod on a placement frame to create a uniform annular clamping force along the outer circumference of a circular mold. A first and second inner locking rod, symmetrically distributed inside the placement frame, are also present. These two sets of inner locking rods, symmetrically distributed along the central axis of the mold cavity, create a uniform radial support force on the inner wall of the cavity when opened. This achieves the following: the outer triangular outer locking rods create an annular clamping force to fix the mold's position, while the symmetrical inner locking rods create a radial support force to support the mold cavity. The two forces counterbalance each other radially along the mold. The clamping force of the outer locking rods prevents the mold from expanding outwards due to the opening of the inner locking rods, while the support force of the inner locking rods prevents the mold from concave inwards due to the clamping of the outer locking rods, thus achieving full-dimensional clamping protection for the circular cavity mold. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the locking mechanism in one embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the locking mechanism in one embodiment of the present invention;

[0017] Figure 3 This is an internal schematic diagram of the locking mechanism in one embodiment of the present utility model;

[0018] Figure 4 This is a top view of the locking mechanism in one embodiment of the present utility model;

[0019] Figure 5 This is a side view of the locking mechanism in one embodiment of the present invention;

[0020] Figure 6 This is a front view of the locking mechanism in one embodiment of the present invention.

[0021] Legend:

[0022] 1. Placement frame; 2. First outer locking rod; 3. Second outer locking rod; 4. Third outer locking rod; 5. First electric telescopic rod; 6. First inner locking rod; 7. Second inner locking rod; 8. Second electric telescopic rod; 9. Rotating frame; 10. Flipping shaft; 11. Rotating shaft; 12. Third electric telescopic rod; 13. Protective frame; 14. First support roller; 15. Second support roller; 16. Third support roller; 17. Mounting frame; 18. Rubber sleeve; 19. Mounting base; 20. Connecting plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] like Figure 1-6As shown, the present invention discloses an adjustable preload mold locking mechanism, comprising a placement frame 1, on which a first outer locking rod 2, a second outer locking rod 3, and a third outer locking rod 4 are arranged in a triangular arrangement. The lower end of the third outer locking rod 4 is connected to a first electric telescopic rod 5 installed on the placement frame 1. Inside the placement frame 1, a first inner locking rod 6 and a second inner locking rod 7 are arranged symmetrically. Both the first inner locking rod 6 and the second inner locking rod 7 are connected to a second electric telescopic rod 8, which is connected to the bottom of the placement frame 1.

[0027] In the technical solution of this utility model, a first outer locking rod 2, a second outer locking rod 3, and a third outer locking rod 4 are arranged in a triangular distribution on the placement frame 1. The three points determine a unique stable circular surface, which can form a uniform annular clamping force along the outer circumference of the circular mold. The third outer locking rod 4 is driven by the first electric telescopic rod 5, which replaces the traditional rough mode of manual bolt adjustment. The first inner locking rod 6 and the second inner locking rod 7 are symmetrically distributed inside the placement frame 1. The two sets of inner locking rods are symmetrically distributed along the central axis of the mold cavity. When they are opened, they can form a uniform radial support force on the inner wall of the cavity. The outer triangular outer locking rods form an annular clamping force to fix the position of the mold, and the inner symmetrical inner locking rods form a radial support force to support the mold cavity. The two sets of forces counterbalance each other along the radial direction of the mold. The clamping force of the outer locking rods prevents the mold from expanding outward due to the opening of the inner locking rods, and the support force of the inner locking rods prevents the mold from concave inward due to the clamping of the outer locking rods, thus achieving full-dimensional clamping protection for the circular cavity mold.

[0028] Specifically, rubber sleeves 18 are fitted on the first outer locking rod 2, the second outer locking rod 3, and the third outer locking rod 4, and a mounting base 19 is connected to the bottom of the protective frame 13. By fitting rubber sleeves 18 on the first outer locking rod 2, the second outer locking rod 3, and the third outer locking rod 4, direct contact between the metal locking rod and the outer circle of the mold can be completely isolated, avoiding the metal locking rod from leaving indentations and scratches on the outer circle of the mold when clamping, which would lead to a decrease in mold precision. At the same time, the rubber sleeves are soft and elastic, and can fit tightly against the outer circle of the mold when clamping without generating rigid compression.

[0029] like Figure 3 and Figure 4 As shown, the bottom of the placement frame 1 is connected to two rotating frames 9. The rotating frames 9 are equipped with a flip shaft 10 and a rotating shaft 11. The flip shaft 10 is hinged to the third electric telescopic rod 12. The two ends of the rotating shaft 11 are connected to the protective frame 13. The bottom of the third electric telescopic rod 12 is connected to the protective frame 13. Through the extension and retraction of the third electric telescopic rod 12, the flip shaft 10 can be driven to rotate around the rotating shaft 11 to realize the tilt angle adjustment of the placement frame 1 (such as precise control within the range of 0°-45°), which greatly improves the processing accuracy and efficiency of complex processes.

[0030] Specifically, the protective frame 13 completely encloses the core transmission components such as the rotating frame 9, the flipping shaft 10, the rotating shaft 11, and the third electric telescopic rod 12. This can prevent cutting chips and coolant generated during processing from entering the transmission mechanism, avoid chips from getting stuck on the rotating shaft or coolant from corroding the electric telescopic rod, and reduce the equipment failure rate.

[0031] Two of the third electric telescopic poles 12 are provided.

[0032] like Figure 1 and Figure 5 As shown, the placement frame 1 is provided with a first support roller 14, a second support roller 15, and a third support roller 16, all of which are rotatably connected to the mounting frame 17. Through the triangularly distributed first support roller 14, second support roller 15, and third support roller 16 on the placement frame 1, the contact method between the mold and the placement frame is changed from traditional surface contact sliding friction to point contact rolling friction. With the help of the support rollers, the mold can be easily placed and removed, greatly reducing the intensity of manual labor. At the same time, the presence of the support rollers prevents the mold from directly contacting the placement frame 1, avoiding direct friction between the outer surface of the mold and the metal material of the placement frame, thus protecting the precision and surface finish of the outer circle of the mold.

[0033] Specifically, the first support roller 14, the second support roller 15, and the third support roller 16 are arranged in a triangular pattern.

[0034] like Figure 1 and Figure 3 As shown, the first outer locking rod 2 and the second outer locking rod 3 are detachably connected to the placement frame 1 via the connecting plate 20, and the third outer locking rod 4 is detachably connected to the drive end of the first electric telescopic rod 5 via the connecting plate 20. The detachable connection with the placement frame 1 via the connecting plate 20 overcomes the limitations of traditional welding and fixing bolt connections, which are difficult to disassemble. When the outer locking rod is worn or accidentally damaged due to long-term use, it is not necessary to disassemble the placement frame 1 or the first electric telescopic rod 5 as a whole. Only the fixing bolts on the connecting plate 20 need to be loosened to remove the damaged outer locking rod for replacement.

[0035] Working principle: The first, second, and third outer locking rods on the placement frame form a uniform annular clamping force along the outer circumference of the circular mold. The first and second inner locking rods, symmetrically distributed inside the placement frame, are symmetrically distributed along the central axis of the mold cavity. When opened, they form a uniform radial support force on the inner wall of the cavity. The outer triangular outer locking rods form an annular clamping force to fix the position of the mold, while the symmetrical inner locking rods form a radial support force to support the mold cavity. The two forces counterbalance each other along the radial direction of the mold. The clamping force of the outer locking rods prevents the mold from expanding outward due to the opening of the inner locking rods, while the support force of the inner locking rods prevents the mold from concave inward due to the clamping of the outer locking rods. This achieves full-dimensional clamping protection for the circular cavity mold.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A mold locking mechanism with adjustable preload, characterized in that, Includes a placement frame (1), on which a first outer locking rod (2), a second outer locking rod (3) and a third outer locking rod (4) are arranged in a triangular pattern, and the lower end of the third outer locking rod (4) is connected to a first electric telescopic rod (5) installed on the placement frame (1); The placement frame (1) is provided with a first inner locking rod (6) and a second inner locking rod (7) symmetrically distributed inside. The first inner locking rod (6) and the second inner locking rod (7) are both connected to the second electric telescopic rod (8), which is connected to the bottom of the placement frame (1).

2. The adjustable preload mold locking mechanism according to claim 1, characterized in that: The bottom of the placement frame (1) is connected to two rotating frames (9). The rotating frames (9) are provided with a flipping shaft (10) and a rotating shaft (11). The flipping shaft (10) is hinged to the third electric telescopic rod (12). The two ends of the rotating shaft (11) are connected to the protective frame (13). The bottom of the third electric telescopic rod (12) is connected to the protective frame (13).

3. The adjustable preload mold locking mechanism according to claim 1, characterized in that: The placement frame (1) is provided with a first support roller (14), a second support roller (15) and a third support roller (16), all of which are rotatably connected to the mounting frame (17).

4. The adjustable preload mold locking mechanism according to claim 2, characterized in that: Rubber sleeves (18) are fitted on the first outer locking rod (2), the second outer locking rod (3) and the third outer locking rod (4).

5. The adjustable preload mold locking mechanism according to claim 2, characterized in that: The bottom of the protective frame (13) is connected to a mounting base (19).

6. The adjustable preload mold locking mechanism according to claim 2, characterized in that: There are two of the third electric telescopic rods (12).

7. The adjustable preload mold locking mechanism according to claim 3, characterized in that: The first support roller (14), the second support roller (15), and the third support roller (16) are arranged in a triangular pattern.

8. The mold locking mechanism with adjustable preload according to claim 1, characterized in that: The first outer locking rod (2) and the second outer locking rod (3) are detachably connected to the placement frame (1) via a connecting plate (20), and the third outer locking rod (4) is detachably connected to the drive end of the first electric telescopic rod (5) via a connecting plate (20).

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