Double-connecting-rod linkage core-pulling mold structure

Abstract

The utility model discloses a double-connecting-rod linkage core-pulling mold structure, which belongs to a mold core-pulling structure and comprises a core-pulling structure, the core-pulling structure comprises a driving structure and two executing structures, the driving structure comprises a guide block, each executing structure comprises a mold core and a sliding block which are fixedly connected with each other, and the two executing structures are arranged on the guide block. One end of the connecting rod is rotationally connected with the sliding block, and the other end of the connecting rod is rotationally connected with the guide block; in the application, transmission from the driving structure to the execution structures is realized through the rotationally connected connecting rods, so that the mounting direction of the driving structure does not need to be parallel to or coincide with the moving direction of the execution structures, and a single driving structure can simultaneously drive the two execution structures to move; therefore, the problem of interference possibly caused by existence of a plurality of driving structures is avoided.

Description

Technical Field

[0001] The utility model relates to a core-pulling structure of a mold, in particular to a core-pulling mold structure with double-link linkage. Background Art

[0002] After the mold forming is completed, core-pulling of the core is required. In the prior art, when multiple 45-degree elbow structures perform core-pulling obliquely at the same time, since the installation direction of the driving structure is the same as the core-pulling direction, it is easy for the core-pulling driving structures of adjacent cores to interfere with each other, and it is difficult to arrange their installation positions.

[0003] For example, the "oil cylinder side core-pulling device" disclosed in the Chinese patent document, with the publication number CN205674438U, includes a base, a hydraulic cylinder clutch mechanism and a side core-pulling slider. The hydraulic cylinder clutch mechanism includes a hydraulic cylinder, a cylinder connecting piece and a cylinder fixing piece. One side of the base is fixedly connected with the cylinder fixing piece, the hydraulic cylinder is fixed on the cylinder fixing piece, a slider guide rail is arranged at the upper end of the cylinder fixing piece, and the slider guide rail is matched and connected with the side core-pulling slider. One end of the cylinder connecting piece is connected with the hydraulic cylinder, and the other end is connected with the side core-pulling slider. A female mold is arranged at the upper end of the base, and a female mold insert pin is arranged on the female mold close to the slider guide rail. The disadvantage of this patent is that the installation direction of the driving structure is the same as the core-pulling direction. If it is applied to a mold with multiple elbow structure cores for simultaneous core-pulling, it is easier for multiple driving structures to interfere with each other, resulting in a large space occupied by the driving structure. Content of the Utility Model

[0004] The utility model aims to overcome the problem that in the prior art, if the core-pulling driving structures of multiple elbow structures are arranged closely, they are very easy to interfere with each other, resulting in a large occupied space, and provides a core-pulling mold structure with double-link linkage, which can avoid the problem of interference of the driving structures generated during the core-pulling process of multiple cores, thereby saving the space occupied by the driving structures and the cost of mold forming.

[0005] In order to achieve the above object, the utility model adopts the following technical solutions:

[0006] The utility model provides a core-pulling mold structure with double-link linkage, including a core-pulling structure. The core-pulling structure includes a driving structure and two executing structures. The driving structure includes a guiding block. The executing structure includes a core and a slider fixedly connected. The slider is connected with the guiding block through a connecting rod. One end of the connecting rod is rotatably connected with the slider, and the other end is rotatably connected with the guiding block.

[0007] In this application, the transmission from the driving structure to the executing structure is realized by rotating the connected connecting rod, so that the installation direction of the driving structure does not need to be parallel or coincident with the moving direction of the executing structure. Therefore, a single driving structure can drive two executing structures to move simultaneously, thereby avoiding the interference problems that may occur when there are multiple driving structures. When multiple core pulling structures are used for core pulling at the same time, the space occupied by the driving structure is less. At the same time, by driving with a single driving structure, it is also possible to ensure that multiple cores are pulled out simultaneously, thereby ensuring the consistency of the products.

[0008] Preferably, a slider swing cavity is provided in the slider, and a slider pin is provided in the slider swing cavity. The rotation connection between the slider and the connecting rod can be realized through the slider pin.

[0009] Preferably, the thickness of the slider swing cavity is adapted to the thickness of the connecting rod. This structure limits the connecting rod in the vertical direction by the slider swing cavity, so that the slider is not easily slid out of the original path vertically.

[0010] Preferably, a guide block swing cavity is provided in the guide block, and a guide block pin is provided in the guide block swing cavity. The rotation connection between the guide block and the connecting rod can be realized through the guide block pin.

[0011] Preferably, there are two guide block swing cavities, and the two guide block swing cavities are arranged at intervals up and down. The thickness of the guide block swing cavity is adapted to the thickness of the connecting rod. This structure limits the connecting rod in the vertical direction by the guide block swing cavity.

[0012] Preferably, the guide block is installed on a guide block track, two limit switches are provided on the guide block track, and a limit trigger rod is installed on the guide block. Through the combination of the limit trigger rod and the limit switch, the distance that the guide block moves each time is more accurate, avoiding the position change of the core, thereby ensuring the consistency of the products.

[0013] Preferably, the slider is installed on a slider track, a horizontal limit groove is provided on the lower side of the slider, and two opposite side surfaces in the horizontal limit groove are in contact with the slider track at the same time. Through this structure, the slider is limited in the two horizontal transverse directions at the same time and is not easily loosened.

[0014] Preferably, two cores are installed on the slider, and a core runner for injecting materials into the two cores simultaneously is provided in the slider. By driving two cores with a single slider at the same time, the number of cores that can be driven by a single driving structure can be further increased, and the space occupied by the driving structure can be further saved.

[0015] Preferably, this application further includes a mold base, the mold base is a left-right symmetric structure, and two core pulling structures are symmetrically installed on the mold base.

[0016] Therefore, the utility model has the following beneficial effects: (1) It avoids the problem of interference of the driving structure during the core pulling process of multiple cores, thus saving the space occupied by the driving structure and the cost of mold forming; (2) The slider and the guiding block are limited, and are not prone to loosening or falling; (3) A single driving structure can drive multiple cores to perform core pulling simultaneously, further saving the space occupied by the driving structure. Description of the Drawings

[0017] Figure 1 It is a top view structural schematic diagram of the first embodiment of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the first embodiment of the utility model at the slider position.

[0019] Figure 3 It is a structural schematic diagram of the first embodiment of the utility model at the guiding block position.

[0020] Figure 4 It is a top view structural schematic diagram of the second embodiment of the utility model.

[0021] Figure 5 It is a top view structural schematic diagram of the third embodiment of the utility model.

[0022] In the figure: guiding block 1, core 2, slider 3, connecting rod 4, slider swing cavity 5, pin at slider 6, guiding block swing cavity 7, pin at guiding block 8, guiding block track 9, limit switch 10, limit trigger rod 11, slider track 12, horizontal limit groove 13, oil cylinder 14, servo electric cylinder 15, mold base 16. Detailed Embodiment

[0023] The following further describes the utility model in combination with the drawings and the detailed embodiment.

[0024] Embodiment 1, as Figures 1 - 3As shown in the figure, a double-link 4-link core-pulling die structure includes a die base 16 and a core-pulling structure. The core-pulling structure includes a driving structure and two execution structures. The driving structure includes a guiding block 1. The execution structure includes a core 2 and a slider 3 that are fixedly connected. The slider 3 is connected to the guiding block 1 through a connecting rod 4. One end of the connecting rod 4 is rotatably connected to the slider 3, and the other end is rotatably connected to the guiding block 1. In this application, the transmission from the driving structure to the execution structure is realized through the rotatably connected connecting rod 4, so that the installation direction of the driving structure does not need to be parallel or coincident with the moving direction of the execution structure. Therefore, a single driving structure can drive two execution structures to move simultaneously, thus avoiding the interference problem that may occur when there are multiple driving structures. When multiple cores 2 are core-pulled simultaneously, the space occupied by the driving structure is less. At the same time, by driving with a single driving structure, it can also ensure that multiple cores 2 are core-pulled simultaneously, thereby ensuring the consistency of the product.

[0025] A slider swing cavity 5 is provided in the slider 3, and a slider pin 6 is provided in the slider swing cavity 5. The thickness of the slider swing cavity 5 is adapted to the thickness of the connecting rod 4. Further, the connecting rod 4 is flat, the thickness of the slider swing cavity 5 is slightly larger than the thickness of the connecting rod 4, and the distances from the upper and lower sides of the connecting rod 4 to the upper and lower inner side walls of the slider swing cavity 5 do not exceed 5 mm. A guiding block swing cavity 7 is provided in the guiding block 1, and a guiding block pin 8 is provided in the guiding block swing cavity 7. There are two guiding block swing cavities 7, and the two guiding block swing cavities 7 are arranged at intervals up and down. The thickness of the guiding block swing cavity 7 is adapted to the thickness of the connecting rod 4. Similarly, the thickness of the guiding block swing cavity 7 is slightly larger than the thickness of the connecting rod 4, and the distances from the upper and lower sides of the connecting rod 4 to the upper and lower inner side walls of the guiding block swing cavity 7 do not exceed 5 mm.

[0026] The driving structure includes an oil cylinder 14. A T-shaped block is provided at the end of the driving rod of the oil cylinder 14. A T-shaped slot is provided on the guiding block 1. The T-shaped block is adaptively installed in the T-shaped slot to form a limit in the moving direction of the driving rod, so that the guiding block 1 can move together with the driving rod. The guiding block 1 is installed on a guiding block track 9. Two limit switches 10 are provided on the guiding block track 9, and a limit trigger rod 11 is installed on the guiding block 1. The two limit switches 10 are respectively a core-pulling limit switch 10 and a core-pushing limit switch 10. Through the combination of the limit trigger rod 11 and the limit switch 10, the distance that the guiding block 1 moves each time is more accurate, avoiding the position change of the core 2, thereby ensuring the consistency of the product. A limit pressing edge for limiting the guiding block 1 in the vertical direction is also provided on the guiding block track 9.

[0027] The slider 3 is installed on the slider track 12. A horizontal limiting groove 13 is provided on the lower side of the slider 3. Two opposite side surfaces in the horizontal limiting groove 13 are in contact with the slider track 12 simultaneously. Through this structure, the slider 3 is limited in two horizontal transverse directions simultaneously and is not prone to loosening. Further, the slider track 12 includes two parallel guide rails. One of the guide rails is adaptively installed in the horizontal limiting groove 13, and the other guide rail is in contact with the slider 3 on only one side.

[0028] Two of the core molds 2 are installed on the slider 3. A core runner for injecting materials into the two core molds 2 simultaneously is provided inside the slider 3.

[0029] During the core pulling process of the device, the driving rod of the oil cylinder 14 retracts, driving the guide block 1 to move on the guide track in the direction of the oil cylinder 14. During the movement of the guide block 1, the connecting rod 4 swings while pulling out the slider 3 together with the core mold 2. Since there is an angle between the force direction of the core mold 2 and its moving direction, the frictional force between the slider 3 and the slider 3 guide rail is greater, and the slider 3 is not easily dropped from the slider 3 guide rail. When the limit trigger rod 11 of the guide block 1 moves to the core pulling limit switch 10, the driving rod stops moving, thus completing the core pulling.

[0030] Embodiment 2, as Figure 4 shown, a double connecting rod 4 linkage core pulling die structure includes a die seat 16 and a core pulling structure. The core pulling structure includes a driving structure and two execution structures. The driving structure includes a guide block 1. The execution structure includes a core mold 2 and a slider 3 fixedly connected. The slider 3 is connected to the guide block 1 through a connecting rod 4. One end of the connecting rod 4 is rotatably connected to the slider 3, and the other end is rotatably connected to the guide block 1. In this application, the transmission from the driving structure to the execution structure is realized through the rotatably connected connecting rod 4, so that the installation direction of the driving structure does not need to be parallel or coincident with the moving direction of the execution structure. Therefore, a single driving structure can drive two execution structures to move simultaneously, thereby avoiding the interference problem that may occur when there are multiple driving structures. When multiple core molds 2 are pulled out simultaneously, the space occupied by the driving structure is less. At the same time, by driving with a single driving structure, it can also ensure that multiple core molds 2 are pulled out simultaneously, thereby ensuring the consistency of the product.

[0031] The slider 3 is provided with a slider swing cavity 5, and a pin at the slider is arranged in the slider swing cavity 5. The thickness of the slider swing cavity 5 is adapted to the thickness of the connecting rod 4. Further, the connecting rod 4 is flat, the thickness of the slider swing cavity 5 is slightly larger than the thickness of the connecting rod 4, and the distances from the upper and lower sides of the connecting rod 4 to the upper and lower inner side walls of the slider swing cavity 5 do not exceed 5 mm. The guide block 1 is provided with a guide block swing cavity 7, and a pin at the guide block is arranged in the guide block swing cavity 7. There are two guide block swing cavities 7, and the two guide block swing cavities 7 are arranged at intervals up and down. The thickness of the guide block swing cavity 7 is adapted to the thickness of the connecting rod 4. Similarly, the thickness of the guide block swing cavity 7 is slightly larger than the thickness of the connecting rod 4, and the distances from the upper and lower sides of the connecting rod 4 to the upper and lower inner side walls of the guide block swing cavity 7 do not exceed 5 mm.

[0032] The driving structure includes a servo electric cylinder 15. A T-shaped block is arranged at the end of the driving rod of the servo electric cylinder 15. A T-shaped slot is arranged on the guide block 1. The T-shaped block is adaptively installed in the T-shaped slot to form a limit in the moving direction of the driving rod, so that the guide block 1 can move together with the driving rod. The guide block 1 is installed on a guide block track 9. A limiting bead for limiting the guide block 1 in the vertical direction is further arranged on the guide block track 9.

[0033] The slider 3 is installed on a slider track 12. A horizontal limiting groove 13 is arranged on the lower side of the slider 3. Two opposite side surfaces in the horizontal limiting groove 13 are in contact with the slider track 12 at the same time. Through this structure, the slider 3 is limited in two horizontal transverse directions at the same time and is not easy to loosen. Further, the slider track 12 includes two parallel guide rails. One of the guide rails is adaptively installed in the horizontal limiting groove 13, and the other guide rail is in contact with the slider 3 only on one side.

[0034] Two of the core molds 2 are installed on the slider 3. A core runner for injecting materials into the two core molds 2 at the same time is arranged in the slider 3.

[0035] During the core pulling process of the device, the driving rod of the servo electric cylinder 15 retracts, driving the guide block 1 on the guide track to move towards the direction where the servo electric cylinder 15 is located. During the movement of the guide block 1, the connecting rod 4 swings while pulling out the slider 3 together with the core mold 2. Since there is an included angle between the force direction of the core mold 2 and its moving direction, the friction force between the slider 3 and the slider 3 guide rail is greater, and the slider 3 is not easy to fall off the slider 3 guide rail. After the driving rod has moved the set stroke, the driving rod stops moving, thus completing the core pulling.

[0036] Embodiment 3, as Figure 5As shown in the figure, a double-link 4-link core-pulling die structure includes a die base 16. The die base 16 is a left-right symmetric structure, and two of the core-pulling structures are symmetrically installed on the die base 16. The core-pulling structure includes a driving structure and two execution structures. The driving structure includes a guide block 1, and the execution structure includes a core 2 and a slider 3 fixedly connected. The slider 3 is connected to the guide block 1 through a connecting rod 4. One end of the connecting rod 4 is rotatably connected to the slider 3, and the other end is rotatably connected to the guide block 1. In this application, the transmission from the driving structure to the execution structure is realized through the rotatably connected connecting rod 4, so that the installation direction of the driving structure does not need to be parallel or coincident with the moving direction of the execution structure. Therefore, a single driving structure can drive two execution structures to move simultaneously, thus avoiding the interference problem that may occur when there are multiple driving structures. When multiple cores 2 are core-pulled simultaneously, the space occupied by the driving structure is less; at the same time, by driving with a single driving structure, it can also ensure that multiple cores 2 are core-pulled simultaneously, thereby ensuring the consistency of the product.

[0037] A slider swing cavity 5 is provided in the slider 3, and a slider pin 6 is provided in the slider swing cavity 5. The thickness of the slider swing cavity 5 is adapted to the thickness of the connecting rod 4. Further, the connecting rod 4 is flat, the thickness of the slider swing cavity 5 is slightly larger than the thickness of the connecting rod 4, and the distance from the upper and lower sides of the connecting rod 4 to the upper and lower inner side walls of the slider swing cavity 5 does not exceed 5 mm. A guide block swing cavity 7 is provided in the guide block 1, and a guide block pin 8 is provided in the guide block swing cavity 7. There are two guide block swing cavities 7, and the two guide block swing cavities 7 are arranged at intervals up and down. The thickness of the guide block swing cavity 7 is adapted to the thickness of the connecting rod 4. Similarly, the thickness of the guide block swing cavity 7 is slightly larger than the thickness of the connecting rod 4, and the distance from the upper and lower sides of the connecting rod 4 to the upper and lower inner side walls of the guide block swing cavity 7 does not exceed 5 mm.

[0038] The driving structure includes an oil cylinder 14. A T-shaped block is provided at the end of the driving rod of the oil cylinder 14. A T-shaped slot is provided on the guide block 1, and the T-shaped block is adaptively installed in the T-shaped slot to form a limit in the moving direction of the driving rod, so that the guide block 1 can move together with the driving rod. The guide block 1 is installed on a guide block track 9, and two limit switches 10 are provided on the guide block track 9. A limit trigger rod 11 is installed on the guide block 1. The two limit switches 10 are respectively a core-pulling limit switch 10 and a core-pushing limit switch 10. Through the combination of the limit trigger rod 11 and the limit switch 10, the distance that the guide block 1 moves each time is more accurate, avoiding the position change of the core 2, thereby ensuring the consistency of the product. A limit pressing edge for limiting the guide block 1 in the vertical direction is also provided on the guide block track 9.

[0039] The slider 3 is installed on the slider track 12. A horizontal limiting groove 13 is provided on the lower side of the slider 3, and two opposite sides in the horizontal limiting groove 13 are in contact with the slider track 12 simultaneously. Through this structure, the slider 3 is limited in two horizontal transverse directions simultaneously and is not prone to looseness. Further, the slider track 12 includes two parallel guide rails, one of which is adaptively installed in the horizontal limiting groove 13, and the other guide rail is in contact with the slider 3 only on one side.

[0040] Two of the core molds 2 are installed on the slider 3, and a core runner for injecting materials into the two core molds 2 simultaneously is provided inside the slider 3.

[0041] During the core pulling process of the device, the driving rods of the oil cylinders 14 of the two core pulling structures are retracted simultaneously, driving the guide block 1 on the guide track to move towards the direction where the oil cylinder 14 is located. During the movement of the guide block 1, the connecting rod 4 swings while pulling out the slider 3 together with the core mold 2. Since there is an included angle between the force application direction of the core mold 2 and its moving direction, the frictional force between the slider 3 and the slider 3 guide rail is greater, and the slider 3 is not easily dropped from the slider 3 guide rail. When the limit trigger rod 11 of the guide block 1 moves to the core pulling limit switch 10, the driving rod stops moving, thus completing the core pulling.

Claims

1. A double-link linkage core-pulling mold structure, characterized in that: It includes a core pulling structure, which includes a driving structure and two execution structures. The driving structure includes a guide block. The execution structure includes a core and a slider that are fixedly connected. The slider and the guide block are connected by a connecting rod. One end of the connecting rod is rotatably connected to the slider, and the other end is rotatably connected to the guide block.

2. A double-link linkage core-pulling mold structure according to claim 1, characterized in that: A slider swing cavity is arranged in the slider, and a slider pin is arranged in the slider swing cavity.

3. A double-link linkage core-pulling mold structure according to claim 2, characterized in that: The thickness of the slider swing cavity is adapted to the thickness of the connecting rod.

4. The double-link linkage core-pulling mold structure according to claim 1 is characterized in that: The guide block has a guide block swing cavity in it, and a guide block pin is arranged in the guide block swing cavity.

5. A double-link linkage core-pulling mold structure according to claim 4, characterized in that: The guide block has two swing cavities, which are spaced apart from each other, and the thickness of the guide block swing cavity is adapted to the thickness of the connecting rod.

6. The double-link linkage core-pulling mold structure according to claim 1 is characterized in that: The guide block is installed on a guide block track, two limit switches are arranged on the guide block track, and a limit trigger rod is installed on the guide block.

7. The double-link linkage core-pulling mold structure according to claim 1 is characterized in that: The slider is installed on the slider track. A horizontal limit groove is arranged on the lower side of the slider. Two opposite side surfaces in the horizontal limit groove are in contact with the slider track at the same time.

8. The double-link linkage core-pulling mold structure according to claim 1 is characterized in that: The two cores are mounted on the slider, and a core flow channel for injecting material into the two cores simultaneously is arranged in the slider.

9. A double-link linkage core-pulling mold structure according to any one of claims 1 to 8, characterized in that: It also includes a mold base, which is a left-right symmetrical structure, and two core-pulling structures are symmetrically installed on the mold base.

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