Synchronous opening and closing mechanism of multi-cavity die driven by worm

Abstract

The utility model relates to the technical field of multi -cavity mould, concretely is the multi -cavity mould synchronous opening and closing mechanism of worm drive, including work board, female die body and several male die bodies, the work board bottom fixed with several support columns, the female die body inside is equipped with several mould cavities, the male die body is located the work board top and with female die body inside same side mould cavity cooperation, still include: synchronous opening and closing subassembly, set up on the work board top surface, for driving several male die bodies to go up and down, the synchronous opening and closing subassembly includes the frame body fixed on the work board top surface, the connecting rod fixed with several male die bodies and slidingly connected between two vertical boards ends of frame body, the utility model discloses through setting up synchronous opening and closing subassembly, adopts the transmission mode of "worm wheel + worm", solves the problem of traditional mechanism " multiple drive easy deviation", ensures that several male die bodies synchronous action, promotes the consistency and precision of multi -cavity mould processing.

Description

Technical Field

[0001] This utility model relates to the field of multi-cavity mold technology, specifically a worm gear driven synchronous opening and closing mechanism for multi-cavity molds. Background Technology

[0002] In modern manufacturing, multi-cavity molds are widely used in plastics, hardware, and other fields because they enable mass production. However, the opening and closing mechanisms of traditional multi-cavity molds often suffer from problems such as poor synchronization and insufficient precision, which seriously restricts production efficiency and product quality.

[0003] Traditional mechanisms often employ multiple independent drive sources to control the movement of each punch. Due to manufacturing errors, response delays, and load fluctuations in the drive components, asynchronous lifting and lowering of the punches can easily occur, leading to opening and closing deviations. This not only causes defects such as inconsistent product dimensions and excessive flash, but may also cause mold jamming and accelerated wear due to uneven force, shortening the equipment's lifespan. Meanwhile, although some mechanisms attempt to improve synchronization through mechanical linkage, they lack precise guiding and locking structures, making them prone to shaking or deviation during operation, especially under high-speed opening and closing conditions, where stability is difficult to guarantee. Furthermore, traditional transmission methods often rely on gears or cylinders. The former is prone to accuracy issues due to tooth backlash, while the latter is significantly affected by air pressure fluctuations, neither of which can meet the demands of high-precision mass production. Against this backdrop, we propose a worm gear driven multi-cavity mold synchronous opening and closing mechanism. Utility Model Content

[0004] The purpose of this utility model is to provide a worm gear driven multi-cavity mold synchronous opening and closing mechanism. By setting a synchronous opening and closing component and adopting a "worm wheel + worm" transmission method, the problem of "multiple drives are prone to deviation" in traditional mechanisms is solved, ensuring that multiple punch bodies move synchronously and improving the consistency and accuracy of multi-cavity mold processing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A worm gear driven multi-cavity mold synchronous opening and closing mechanism includes a work plate, a die body, and several punch bodies. Several support columns are fixed to the bottom of the work plate. Several mold cavities are provided inside the die body. The punch bodies are located above the work plate and cooperate with the mold cavities on the same side inside the die body. The mechanism also includes: A synchronous opening and closing assembly is installed on the top surface of the work plate and is used to drive several punch bodies to rise and fall. The synchronous opening and closing assembly includes a frame fixed on the top surface of the work plate, a connecting rod slidably connected between the two vertical plate ends of the frame and fixed to several punch bodies, a screw rotatably connected between the horizontal plate end of the frame and the work plate and used to drive the lifting rod to rise and fall, a worm gear and worm located above the work plate and used to drive the screw to rotate, and a motor installed on the top surface of the work plate and used to drive the worm and worm gear to rotate.

[0006] In a preferred embodiment, the synchronous opening and closing assembly further includes a plurality of connecting rods fixed to the bottom surface of the lifting rod. The connecting rods are fixed to the top surface of the punch body on the same side, and the plurality of connecting rods are fixed to the bottom surface of the lifting rod in a horizontally linear and equally spaced manner. In a preferred embodiment, the synchronous opening and closing assembly further includes two rotating rods that are rotatably connected to the end of the frame's horizontal plate and the working plate, respectively. The screw is coaxially fixed between the two rotating rods and is arranged vertically, and the lifting rod is threadedly connected to the screw. In a preferred embodiment, the synchronous opening and closing assembly further includes a fixing plate fixed on the top surface of the working plate, the worm gear meshes with the worm, the worm gear is coaxially fixed on the outer circumferential wall of the rotating rod on the same side, the rod body of the worm is rotatably connected between the fixing plate and the vertical plate end on the same side of the frame, and the output shaft of the motor is coaxially connected to the rod body of the worm. In a preferred embodiment, the two vertical plate ends of the frame are provided with vertically arranged guide grooves on their opposing surfaces. The left and right sides of the lifting rod are fixed with guide blocks that are slidably connected to the guide grooves on the outer wall of the vertical plate end of the frame. The top surface of the lifting rod is provided with an insertion hole. The synchronous opening and closing assembly also includes a guide rod that is fixed between the horizontal plate end of the frame and the working plate and is slidably inserted into the insertion hole on the top surface of the lifting rod. In a preferred embodiment, the cross-sectional shape of the guide groove on the outer wall of the vertical plate end of the frame is convex, and the shape of the guide block is convex, which is adapted to the shape of the guide groove on the outer wall of the vertical plate end of the frame. These five settings ensure that the lifting force of the lifting rod is evenly transmitted to each punch, ensuring synchronous action of the punches, improving the consistency of opening and closing of multi-cavity molds, converting the rotational motion of the rotating rod into the linear motion of the lifting rod, achieving stable lifting and lowering of the punch body, ensuring stable rotation of the worm gear and precise meshing with the worm wheel, guaranteeing transmission stability, ensuring precise punch action, limiting the movement trajectory of the lifting rod, preventing it from deviating during lifting and lowering, ensuring the linearity and precision of the punch body's lifting and lowering, enhancing the connection stability of the guide structure, preventing the lifting rod from falling off, and further improving the smoothness and safety of the punch body's lifting and lowering.

[0007] In a preferred embodiment, the bottom surfaces of several punch bodies are located on the same plane, and the positions of the punch bodies and the mold cavities on the same side inside the die bodies correspond to each other and their dimensions are compatible. In a preferred embodiment, a plurality of support columns at the bottom of the working plate are arranged in a matrix, a support plate is fixed on the bottom surface of the support columns, and an anti-slip plate adapted to the shape of the support plate is fixed on the bottom surface of the support plate. These two settings ensure precise matching between the punch and the mold cavity, guaranteeing consistent product dimensions, improving product qualification rate, enhancing overall stability of the device, preventing displacement and shaking during operation, providing a stable foundation for mold opening and closing, and ensuring processing accuracy.

[0008] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model provides a stable installation foundation for the entire mechanism through the setting of a working plate, support columns, support plates and anti-slip plates. The matrix-arranged support columns evenly distribute the weight of the device, the support plates expand the force-bearing area of ​​the contact surface, and the anti-slip plates enhance the friction coefficient, effectively preventing the mechanism from displacement or shaking due to vibration during operation. This multi-level support structure not only improves the overall rigidity of the device, but also adapts to the installation environment under different working conditions, realizing the stability of the mechanism's operation, and achieving the effect of reducing external interference and ensuring positional accuracy during mold opening and closing. 2. This utility model achieves high-precision synchronous lifting of multiple punches by setting up a worm gear transmission and linkage structure in the synchronous opening and closing assembly. The motor drives the worm to rotate the worm wheel, which is converted into linear motion of the lifting rod through the rotating rod and screw, and then transmitted to each punch through the connecting rod, ensuring that all punches move synchronously in the same plane. The cooperation between the guide groove, guide block and guide rod eliminates the offset error during the lifting process, and the self-locking characteristic of the worm gear prevents accidental displacement. This design solves the motion deviation problem that is prone to occur in traditional multi-drive methods, and achieves the effect of improving the processing consistency of multi-cavity molds, increasing production efficiency and product qualification rate. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of the synchronous opening and closing component in this utility model; Figure 3 This is one of the exploded partial views of the synchronous opening and closing component in this utility model; Figure 4 This is the second partial exploded view of the synchronous opening and closing component in this utility model; The meanings of the labels in the diagram are as follows: 1. Working plate; 11. Support column; 12. Support plate; 13. Anti-slip plate; 2. Die body; 3. Punch body; 4. Synchronous opening and closing assembly; 41. Frame; 42. Lifting rod; 43. Connecting rod; 44. Motor; 45. Rotating rod; 46. Screw; 47. Guide block; 48. Guide rod; 49. Fixing plate; 410. Worm gear; 411. Worm wheel. Detailed Implementation

[0010] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0011] Please see Figure 1 The present invention provides a technical solution: a worm gear driven multi-cavity mold synchronous opening and closing mechanism, including a working plate 1, a die body 2 and several punch bodies 3. Several support columns 11 are fixed at the bottom of the working plate 1. Several mold cavities are provided inside the die body 2. The punch bodies 3 are located above the working plate 1 and cooperate with the mold cavities on the same side inside the die body 2. By setting up several working plates 1 and several support columns 11, the entire device can have an installation foundation, and the die body 2 can be installed.

[0012] In this embodiment, the bottom surfaces of several punch bodies 3 are located on the same plane, and the positions of the punch bodies 3 and the mold cavities on the same side inside the die bodies 2 correspond and their sizes are matched. By using the coplanar bottom surface of the punch body 3 and the matching die body 2 cavity, the punch and the cavity are precisely matched, ensuring that the molded product has consistent dimensions and improving the product qualification rate and processing quality.

[0013] In addition, several support columns 11 at the bottom of the working plate 1 are arranged in a matrix, and a support plate 12 is fixed on the bottom surface of the support column 11, and an anti-slip plate 13 that matches its shape is fixed on the bottom surface of the support plate 12. The matrix support columns 11, support plates 12, and anti-slip plates 13 enhance the overall stability of the device, prevent displacement and shaking during operation, provide a stable foundation for mold opening and closing, and ensure processing accuracy and safety.

[0014] like Figures 1-4 As shown, it further includes: a synchronous opening and closing assembly 4, which is set on the top surface of the work plate 1 and is used to drive several punch bodies 3 to rise and fall. The synchronous opening and closing assembly 4 includes a frame 41 fixed on the top surface of the work plate 1, a connecting rod 43 slidably connected between the two vertical plate ends of the frame 41 and fixed to several punch bodies 3, a screw 46 rotatably connected between the horizontal plate end of the frame 41 and the work plate 1 and used to drive the lifting rod 42 to rise and fall, a worm gear 411 and a worm 410 located above the work plate 1 and used to drive the screw 46 to rotate, and a motor 44 installed on the top surface of the work plate 1 and used to drive the worm 410 and the worm gear 411 to rotate. The synchronous opening and closing component 4 is designed to facilitate the lifting and lowering of several punch bodies 3. The "worm gear + worm" transmission method can drive several connecting rods 43 and several punch bodies 3 to move synchronously, solving the problem of "multiple drives are prone to deviation" in traditional mechanisms.

[0015] Specifically, the synchronous opening and closing assembly 4 also includes several connecting rods 43 fixed on the bottom surface of the lifting rod 42. The connecting rods 43 are fixed on the top surface of the punch body 3 on the same side, and the several connecting rods 43 are fixed on the bottom surface of the lifting rod 42 in a horizontal linear and equally spaced arrangement. The lifting rod 42 and the horizontally equidistant connecting rod 43 are connected to the punch body 3, so that the lifting force is transmitted evenly, ensuring that the action of each punch is consistent and enhancing the synchronicity and stability of the opening and closing of the multi-cavity mold.

[0016] It is worth noting that the synchronous opening and closing assembly 4 also includes two rotating rods 45 that are rotatably connected to the horizontal plate end of the frame 41 and the working plate 1 respectively. The screw 46 is coaxially fixed between the two rotating rods 45 and is arranged vertically. The lifting rod 42 is threadedly connected to the screw 46. The rotating rod 45 connects the frame 41 and the working plate 1, and the screw converts the rotational motion into the linear motion of the lifting rod 42, so as to realize the smooth lifting and lowering of the punch body 3 and ensure precise action.

[0017] It is worth noting that the synchronous opening and closing assembly 4 also includes a fixed plate 49 fixed on the top surface of the working plate 1, a worm gear 411 meshing with a worm 410, the worm gear 411 being coaxially fixed on the outer circumferential wall of the rotating rod 45 on the same side, the rod body of the worm 410 being rotatably connected between the fixed plate 49 and the vertical plate end on the same side of the frame 41, and the output shaft of the motor 44 being coaxially connected with the rod body of the worm 410. The fixing plate 49 provides stable support for the worm gear 410. Together with the vertical plate end of the frame 41, it ensures precise meshing between the worm gear and the worm wheel 411, ensuring stable transmission and improving the motion accuracy of the punch body 3.

[0018] It is worth emphasizing that the two vertical plate ends of the frame 41 are provided with vertically arranged guide grooves on their opposite sides, and the left and right sides of the lifting rod 42 are fixed with guide blocks 47 that are slidably connected to the guide grooves on the outer wall of the vertical plate end of the same side of the frame 41. The top surface of the lifting rod 42 is provided with an insertion hole, and the synchronous opening and closing assembly 4 also includes a guide rod 48 that is fixed between the horizontal plate end of the frame 41 and the working plate 1 and slidably inserted into the insertion hole on the top surface of the lifting rod 42. The guide groove of frame 41, guide block 47 of lifting rod 42 and guide rod 48 restrict the movement trajectory of lifting rod, prevent deviation, ensure the straightness and accuracy of lifting of punch body 3, and enhance the stability of mechanism.

[0019] It is worth noting that the cross-sectional shape of the guide groove on the outer wall of the vertical plate end of the frame 41 is convex, and the shape of the guide block 47 is convex, which matches the shape of the guide groove on the outer wall of the vertical plate end of the frame 41. The convex guide groove and the matching guide block 47 enhance the connection stability of the guide structure, prevent the lifting rod 42 from falling off, and further improve the smoothness and operational safety of the lifting of the punch body 3.

[0020] It should be added that motor 44 is electrically connected to the external PLC and the external power supply via wires, and the external PLC is also electrically connected to the external power supply via wires.

[0021] Finally, it should be noted that the components involved in this utility model, such as the die body 2, the punch body 3, and the motor 44, are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and the matching controller and power supply, are connected by wires. The specific connection methods should refer to the working principle of this utility model. The electrical connections between each electrical component are completed in the order of operation. The detailed connection methods are all technologies known in the art.

[0022] In this embodiment, during actual use, after the external PLC controls the motor 44 to start, the motor output shaft drives the worm gear 410 to rotate. The worm gear meshes with the worm wheel 411, causing the worm wheel to drive the rotating rod 45 to rotate. The rotating rod drives the coaxially fixed screw 46 to rotate. The screw is threadedly connected to the lifting rod 42, converting the rotational motion into the vertical linear motion of the lifting rod. The lifting rod 42 rises and falls smoothly under the constraint of the guide groove of the frame 41, the guide block 47, and the guide rod 48. Through the bottom connecting rod 43, it drives several punch bodies 3 to rise and fall synchronously, realizing the opening and closing action with the mold cavity of the die body 2.

[0023] When the PLC issues a stop command, the motor 44 stops rotating. The self-locking characteristics of the worm gear 411 and the worm 410 fix the lifting rod 42, and the punch body 3 maintains its current position, completing one opening and closing cycle. Throughout the process, the basic structure composed of the working plate 1, support column 11, etc. provides stable support and ensures the operating accuracy of the mechanism.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A worm gear driven multi-cavity mold synchronous opening and closing mechanism, comprising a working plate (1), a die body (2), and several punch bodies (3), characterized in that, The working plate (1) has several support columns (11) fixed at its bottom end. The die body (2) has several mold cavities inside. The punch body (3) is located above the working plate (1) and cooperates with the mold cavity on the same side inside the die body (2). The working plate (1) also includes: The synchronous opening and closing assembly (4) is set on the top surface of the work plate (1) and is used to drive several punch bodies (3) to rise and fall. The synchronous opening and closing assembly (4) includes a frame (41) fixed on the top surface of the work plate (1), a connecting rod (43) slidably connected between the two vertical plate ends of the frame (41) and fixed to several punch bodies (3), a screw (46) rotatably connected between the horizontal plate end of the frame (41) and the work plate (1) and used to drive the lifting rod (42) to rise and fall, a worm gear (411) and a worm (410) located above the work plate (1) and used to drive the screw (46) to rotate, and a motor (44) installed on the top surface of the work plate (1) and used to drive the worm (410) and the worm gear (411) to rotate.

2. The worm gear driven multi-cavity mold synchronous opening and closing mechanism according to claim 1, characterized in that: The synchronous opening and closing assembly (4) also includes several connecting rods (43) fixed on the bottom surface of the lifting rod (42). The connecting rods (43) are fixed on the top surface of the punch body (3) on the same side, and the several connecting rods (43) are fixed on the bottom surface of the lifting rod (42) in a horizontal linear and equally spaced arrangement.

3. The worm gear driven multi-cavity mold synchronous opening and closing mechanism according to claim 1, characterized in that: The synchronous opening and closing assembly (4) also includes two rotating rods (45) that are rotatably connected to the horizontal plate end of the frame (41) and the working plate (1) respectively. The screw (46) is coaxially fixed between the two rotating rods (45) and is arranged vertically. The lifting rod (42) is threadedly connected to the screw (46).

4. The worm gear driven multi-cavity mold synchronous opening and closing mechanism according to claim 3, characterized in that: The synchronous opening and closing assembly (4) also includes a fixing plate (49) fixed on the top surface of the working plate (1), the worm wheel (411) meshes with the worm (410), the worm wheel (411) is coaxially fixed on the outer circumferential wall of the rotating rod (45) on the same side, the rod body of the worm (410) is rotatably connected between the fixing plate (49) and the vertical plate end on the same side of the frame (41), and the output shaft of the motor (44) is coaxially connected with the rod body of the worm (410).

5. The worm gear driven multi-cavity mold synchronous opening and closing mechanism according to claim 1, characterized in that: The two vertical plate ends of the frame (41) are provided with vertically arranged guide grooves on their opposing surfaces. The left and right sides of the lifting rod (42) are fixed with guide blocks (47) that are slidably connected to the guide grooves on the outer wall of the vertical plate end of the frame (41). The top surface of the lifting rod (42) is provided with an insertion hole. The synchronous opening and closing assembly (4) also includes a guide rod (48) that is fixed between the horizontal plate end of the frame (41) and the working plate (1) and slidably inserted into the insertion hole on the top surface of the lifting rod (42).

6. The worm gear driven multi-cavity mold synchronous opening and closing mechanism according to claim 5, characterized in that: The cross-sectional shape of the guide groove on the outer wall of the vertical plate end of the frame (41) is convex, and the shape of the guide block (47) is convex, which is compatible with the shape of the guide groove on the outer wall of the vertical plate end of the frame (41).

7. The worm gear driven multi-cavity mold synchronous opening and closing mechanism according to claim 1, characterized in that: The bottom surfaces of several punch bodies (3) are located on the same plane, and the positions of the punch bodies (3) and the mold cavities on the same side inside the die bodies (2) correspond to each other and their dimensions are compatible.

8. The worm gear driven multi-cavity mold synchronous opening and closing mechanism according to claim 1, characterized in that: The working plate (1) has several support columns (11) arranged in a matrix at the bottom. A support plate (12) is fixed on the bottom surface of the support column (11), and an anti-slip plate (13) that matches its shape is fixed on the bottom surface of the support plate (12).

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