A mold clamping positioning structure

Abstract

The utility model discloses a mould closes mould positioning structure relates to mould closing mould technical field, including mounting bracket, the symmetry of mounting bracket top has two hydraulic cylinders, two hydraulic cylinders bottom is connected with the upper die holder, and the symmetry of mounting bracket bottom is installed with two positioning components, the utility model discloses synchronous lifting through fixed link and upper die holder, drives the stable vertical sliding of lifting piece in the limiting groove, ensures the linear of movement path, avoids mechanical interference, and lifting piece moves down and drives the linkage of linkage link and moving block, and four moving blocks synchronous translation, and moving block drives both sides moving link collaborative movement, when moving link is to the middle and draws close, and its end extrusion structure applies horizontal positioning pressure to workpiece side, and the extrusion block of lifting piece one side then applies vertical pressure to workpiece upper surface, thereby realizes three -dimensional accurate clamping and positioning to workpiece.

Description

Technical Field

[0001] This utility model relates to the field of mold closing technology, and in particular to a mold closing and positioning structure. Background Technology

[0002] A mold is a set of molds and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. In short, a mold is a tool used to create shaped objects, and this tool is composed of various parts.

[0003] However, in the existing technology, the positioning of the workpiece during the traditional mold closing process often relies on clamping in a single direction or a few parts. When the mold closes quickly and generates impact force, the workpiece is prone to displacement, resulting in a decrease in mold closing accuracy and quality problems such as product size deviation and flash. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the prior art that the workpiece is prone to displacement when the mold closes rapidly and generates impact force, and to propose a mold closing and positioning structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a mold closing and positioning structure, including a mounting frame, two hydraulic cylinders symmetrically mounted on the top of the mounting frame, an upper mold base connected to the bottom of the two hydraulic cylinders, and two positioning components symmetrically mounted on the bottom of the mounting frame;

[0006] The positioning component includes a fixed frame with multiple sliding grooves on its side wall. A movable block is slidably connected to the inside of the sliding groove. The top of the fixed frame is fixedly connected to the bottom of the mounting frame. A limit groove is provided in the middle of the fixed frame. A lifting block is slidably connected to the inside of the limit groove. A linkage rod is symmetrically rotatably connected to the top and bottom of the side wall of the lifting block. One end of the linkage rod is rotatably connected to a mounting rod. One end of the mounting rod is fixedly connected to the side wall of the movable block.

[0007] Preferably, two movable rods are symmetrically arranged on one side of the fixed frame, and the top and middle of the movable rods are fixedly connected to the mounting rod.

[0008] Preferably, a fixing rod is fixedly connected to the top of the side wall of the lifting block, and one end of the fixing rod is fixedly connected to the upper mold base.

[0009] Preferably, a pressing plate is fixedly connected to the bottom end of the moving rod, and a pressing block is fixedly connected to the bottom end of the side wall of the lifting block.

[0010] Preferably, two positioning plates are symmetrically arranged at the bottom of the upper mold base.

[0011] Preferably, both ends of the positioning plate are fixedly connected to the side wall of the extrusion plate.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, the fixed rod and the upper mold base are raised and lowered synchronously, which drives the lifting block to slide stably and vertically in the limiting groove, ensuring the linearity of the movement path and avoiding mechanical interference. The lifting block moves down to drive the linkage rod and the moving block to move in conjunction. The four moving blocks move synchronously. The moving blocks drive the moving rods on both sides to move in coordination. When the moving rods move towards the middle, the end extrusion structure applies horizontal positioning pressure to the side of the workpiece, while the extrusion block on one side of the lifting block applies vertical pressure to the upper surface of the workpiece, thereby achieving three-dimensional precise clamping and positioning of the workpiece and ensuring the stability and consistency of the mold closing process.

[0014] 2. In this utility model, the upper mold base is driven by a hydraulic cylinder to move downward in the vertical direction, realizing the mold closing and forming operation of the workpiece. The power is transmitted to the lifting block through the fixed rod. Under the guidance of the limiting groove, the lifting block moves only along a straight trajectory, effectively preventing deviation or tilting and ensuring operational stability and accuracy. At the same time, the movement of the lifting block is transmitted to the moving block through the linkage rod. Under the guidance of the sliding groove, the moving block achieves stable horizontal movement, avoiding swaying caused by uneven load or friction. In the entire system, the moving rod drives the positioning plate to move closer. Relying on the high-precision structure such as the limiting groove and sliding groove, it is ensured that the positioning plate maintains balance and accurately fits the workpiece positioning area during movement, thereby improving the accuracy and reliability of workpiece positioning. Attached Figure Description

[0015] Figure 1 This utility model provides an overall three-dimensional structural diagram of a mold closing and positioning structure;

[0016] Figure 2 This utility model provides a partial three-dimensional structural diagram of a mold closing and positioning structure;

[0017] Figure 3 This utility model provides a three-dimensional structural diagram of a positioning component in a mold closing and positioning structure;

[0018] Figure 4 This utility model provides a side view of the positioning component in a mold closing and positioning structure.

[0019] Legend: 1. Mounting frame; 2. Hydraulic cylinder; 3. Upper mold base; 4. Positioning assembly; 41. Fixed frame; 42. Limiting groove; 43. Moving block; 44. Moving rod; 45. Lifting block; 451. Fixed rod; 46. Extrusion block; 47. Extrusion plate; 471. Mounting rod; 48. Linkage rod; 49. Sliding groove; 5. Positioning plate. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: As Figures 1-4 As shown, this utility model provides a mold closing and positioning structure, including a mounting frame 1, two hydraulic cylinders 2 symmetrically mounted on the top of the mounting frame 1, an upper mold base 3 connected to the bottom of the two hydraulic cylinders 2, and two positioning components 4 symmetrically mounted on the bottom of the mounting frame 1.

[0023] The positioning component 4 includes a fixed frame 41. The side wall of the fixed frame 41 has multiple sliding grooves 49. A movable block 43 is slidably connected to the inside of the sliding grooves 49. The top of the fixed frame 41 is fixedly connected to the bottom of the mounting frame 1. A limit groove 42 is opened in the middle of the fixed frame 41. A lifting block 45 is slidably connected to the inside of the limit groove 42. A linkage rod 48 is symmetrically rotatably connected to the top and bottom of the side wall of the lifting block 45. One end of the linkage rod 48 is rotatably connected to an installation rod 471. One end of the installation rod 471 is fixedly connected to the side wall of the movable block 43.

[0024] The specific settings and functions of this embodiment are described below. During the mold closing process, the fixed rod 451 and the upper mold base 3 move synchronously up and down. When the upper mold base 3 moves downward, the fixed rod 451 also descends synchronously under its influence, thereby driving the lifting block 45 connected below it to slide vertically and linearly along the limiting groove 42 in a controlled manner. The setting of the limiting groove 42 ensures the stability and linearity of the movement path of the lifting block 45, effectively avoiding mechanical interference or mold misalignment caused by offset.

[0025] As the lifting block 45 gradually descends, its bottom connects to four linkage rods 48. The linkage rods 48 maintain synchronized movement with the lifting block 45 during the lifting process. Each linkage rod 48 is connected to a moving block 43, so that as the lifting block 45 moves downward, the four moving blocks 43 move synchronously in a predetermined direction, ensuring the coordination and synchronization of the entire system. During the translation of the moving blocks 43, they simultaneously drive the two moving rods 44 located on both sides to move collaboratively along a set trajectory.

[0026] As the moving rod 44 moves closer to the center, the extrusion structure at its end gradually applies uniform positioning pressure to the side of the workpiece, achieving precise horizontal clamping of the workpiece. Simultaneously, the extrusion block 46 integrated on one side of the lifting block 45 applies vertical extrusion force to the upper surface or specific parts of the workpiece located between the mold cavities during descent, for longitudinal positioning and clamping of the workpiece.

[0027] Example 2: Figures 2-4 As shown, two movable rods 44 are symmetrically arranged on one side of the fixed frame 41, and the top and middle parts of the movable rods 44 are fixedly connected to the mounting rod 471. A fixed rod 451 is fixedly connected to the top of the side wall of the lifting block 45, and one end of the fixed rod 451 is fixedly connected to the upper mold base 3. An extrusion plate 47 is fixedly connected to the bottom of the movable rods 44, and an extrusion block 46 is fixedly connected to the bottom of the side wall of the lifting block 45. Two positioning plates 5 are symmetrically arranged at the bottom of the upper mold base 3. Both ends of the positioning plates 5 are fixedly connected to the side wall of the extrusion plate 47.

[0028] The overall effect of this embodiment is that the hydraulic cylinder 2 directly controls the upper mold base 3 to move downwards in the vertical direction, thereby realizing the mold closing and forming operation of the workpiece. During this process, the downward pressing action of the upper mold base 3 transmits power through two fixed rods 451 connected to it, driving the lifting block 45 installed below it to move synchronously. Throughout the entire vertical movement, the lifting block 45 is strictly constrained by the guide structure of the limiting groove 42, ensuring that it only runs along a preset straight trajectory. This limiting structure design effectively prevents the lifting block 45 from deviating or tilting under stress, ensuring the accuracy and stability of the movement path.

[0029] Meanwhile, the linear motion of the lifting block 45 is further transmitted to the moving block 43 through the linkage rod 48 mechanism. When the linkage rod 48 drives the moving block 43 to move horizontally, the moving block 43 is also guided and restricted by the sliding groove 49, thus maintaining its movement along a stable straight trajectory during operation. The presence of the sliding groove 49 significantly improves the stability of the mechanism's operation, preventing swaying or tilting caused by uneven load or friction during linkage.

[0030] As the two moving rods 44 gradually approach each other under the system's drive, they simultaneously and stably push the positioning plate 5 connected to them. Because the high-precision guiding structures of the front-end mechanisms, including the limiting groove 42 and the sliding groove 49, provide excellent linear motion control, the positioning plate 5 maintains a balanced state throughout the entire movement, effectively conforming to the workpiece's positioning area, thereby significantly improving the accuracy and comprehensiveness of workpiece positioning.

[0031] The device's operation and working principle are as follows: During mold closing, hydraulic cylinder 2 drives upper mold base 3 to move downwards vertically, achieving the core molding operation. As upper mold base 3 descends, the lifting block 45 moves downwards synchronously via two connected fixed rods 451. During its vertical movement, the lifting block 45 is guided and constrained by the limiting groove 42, thus achieving stable linear sliding and effectively preventing deviation or skewness.

[0032] During the mold closing action, the descent of the lifting block 45 further drives the four moving blocks 43 to move horizontally synchronously via four linkage rods 48. The moving blocks 43 maintain stable linear motion under the constraint of the sliding grooves 49, ensuring that they do not sway or deviate from their positions throughout the movement. As the moving blocks 43 move synchronously, the two connected moving rods 44 also move closer to each other.

[0033] During this process, the extrusion block 46 on one side of the lifting block 45 will initially extrude force on the workpiece between the upper and lower dies to ensure that the workpiece is in the correct position before the die closes. At the same time, the synchronous approach of the two moving rods 44 will also perform lateral extrusion and positioning on the side of the workpiece, thereby further improving the positioning stability of the workpiece in the die cavity.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A mold closing and positioning structure, comprising a mounting frame (1), wherein two hydraulic cylinders (2) are symmetrically mounted on the top of the mounting frame (1), and an upper mold base (3) is connected to the bottom of the two hydraulic cylinders (2), characterized in that: The mounting bracket (1) has two positioning components (4) symmetrically installed at its bottom; The positioning component (4) includes a fixed frame (41). The fixed frame (41) has multiple sliding grooves (49) on its side wall. A moving block (43) is slidably connected to the inner side of the sliding groove (49). The top of the fixed frame (41) is fixedly connected to the bottom of the mounting frame (1). A limiting groove (42) is opened in the middle of the fixed frame (41). A lifting block (45) is slidably connected to the inner side of the limiting groove (42). A linkage rod (48) is symmetrically rotatably connected to the top and bottom of the side wall of the lifting block (45). One end of the linkage rod (48) is rotatably connected to an installation rod (471). One end of the installation rod (471) is fixedly connected to the side wall of the moving block (43).

2. The mold closing and positioning structure according to claim 1, characterized in that: Two movable rods (44) are symmetrically arranged on one side of the fixed frame (41), and the top and middle parts of the movable rods (44) are fixedly connected to the mounting rod (471).

3. The mold closing and positioning structure according to claim 1, characterized in that: A fixing rod (451) is fixedly connected to the top of the side wall of the lifting block (45), and one end of the fixing rod (451) is fixedly connected to the upper mold base (3).

4. The mold closing and positioning structure according to claim 2, characterized in that: The bottom end of the moving rod (44) is fixedly connected to an extrusion plate (47), and the bottom end of the side wall of the lifting block (45) is fixedly connected to an extrusion block (46).

5. The mold closing and positioning structure according to claim 1, characterized in that: The upper mold base (3) has two symmetrically arranged positioning plates (5) at its bottom.

6. The mold closing and positioning structure according to claim 5, characterized in that: Both ends of the positioning plate (5) are fixedly connected to the side wall of the extrusion plate (47).

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