Core pulling mechanism for connecting rod mold

Abstract

The utility model relates to the technical field of connecting rod production, and discloses a core-pulling mechanism for a connecting rod mold, which comprises a lower mold and an upper mold, a connecting seat is fixedly mounted at one end of the lower mold close to the upper mold, a mounting groove is arranged on the outer surface of the connecting seat, and an injection port is arranged at the other end of the upper mold far away from the lower mold. A mounting seat is arranged on the outer surfaces of the lower die and the upper die, an oil cylinder is fixedly mounted on the outer surface of the mounting seat, a positioning frame is fixedly mounted at the other end, away from the oil cylinder, of the mounting seat, and a connector is fixedly mounted at the other end, away from the oil cylinder, of the positioning frame. According to the core-pulling mechanism for the connecting rod mold, due to the contact design of the fixing seat and the connecting seat, supporting and guiding effects are provided for movement of the core-pulling sleeve, it can be guaranteed that the core-pulling sleeve stably moves along a preset track in the core-pulling process, the phenomenon that the core-pulling sleeve deviates or shakes or is clamped is avoided, the core-pulling precision and smoothness are improved, and the service life of the core-pulling sleeve is prolonged. Damage to the internal structure of a connecting rod product is reduced, and product quality and production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to connecting rod production technical field, concretely is a core pulling mechanism for connecting rod mould. BACKGROUND

[0002] In the mould forming process, the shape of the mould cavity determines the shape of the product. For solid simple shape products, the mould cavity can directly complete the manufacturing of the product through the processes of clamping, injection molding (or die casting, etc. molding process), and opening the mold. However, in the production process of the connecting rod mold, the core pulling mechanism plays a crucial role. The connecting rod, as a common mechanical part, has a complex shape and often has internal holes, grooves, or side recesses. These features need to be realized through the core pulling mechanism during the mould forming process.

[0003] Chinese utility model patent publication No. CN 213035214 U discloses an injection mold core pulling mechanism. The injection mold core pulling mechanism has a buffer rubber pad located at the upper bonding surface between the core pulling module and the inclined pressure block. When the inclined pressure block moves away from the core pulling module, the core pulling module is pushed outward due to the potential energy of the spring. The impact force of the core pulling module is affected by the potential energy during this process. Therefore, a buffer rubber pad is needed to reduce the impact force between the core pulling module and the inclined pressure block. However, the injection mold core pulling mechanism uses a spring to achieve core pulling. The spring is prone to deviation, shaking, or jamming, which can lead to poor core pulling precision and smoothness. Moreover, it is not convenient to reduce damage to the internal structure of the connecting rod product, resulting in poor practicality. SUMMARY

[0004] The utility model solves the technical problem of providing a core pulling mechanism for connecting rod molds. It effectively solves the problem of poor core pulling precision and smoothness caused by the spring deviation, shaking, or jamming phenomenon in the prior art. Moreover, it is not convenient to reduce damage to the internal structure of the connecting rod product, resulting in poor practicality.

[0005] The utility model adopts the technical scheme of a core pulling mechanism for connecting rod molds, which includes a lower mold and an upper mold. The lower mold is fixedly installed with a connecting seat at one end close to the upper mold. An installation groove is formed on the outer surface of the connecting seat. The upper mold is provided with an injection port at the other end away from the lower mold. The outer surfaces of the lower mold and the upper mold are provided with mounting seats. An oil cylinder is fixedly installed on the outer surface of the mounting seat. A positioning frame is fixedly installed on the other end of the mounting seat away from the oil cylinder. A connecting head is fixedly installed on the other end of the positioning frame away from the oil cylinder. A connecting rod is fixedly installed on the output shaft of the oil cylinder. A core pulling sleeve is provided at the other end of the connecting rod away from the oil cylinder.

[0006] Preferably, the upper die outer surface is fixedly provided with an insertion block, the lower die outer surface is fixedly provided with an insertion sleeve, and the insertion block and the insertion sleeve are in a plug-in connection.

[0007] Through the above technical scheme, the plug-in connection of the insertion block and the insertion sleeve provides quick and accurate positioning for the die closing of the upper die and the lower die, greatly improves the efficiency and accuracy of die closing, reduces the risk of mold damage and product forming defects caused by inaccurate die closing, and reduces the difficulty of mold installation and the requirement for the skills of the operator.

[0008] Preferably, two insertion blocks and two insertion sleeves are provided, and the two insertion blocks and the two insertion sleeves are symmetrically distributed about the center line of the upper die.

[0009] Through the above technical scheme, the symmetrically distributed insertion block and insertion sleeve design further enhances the stability and balance of the upper die and the lower die during die closing, effectively prevents the mold from shifting, tilting and other conditions during die closing, ensures the sealing and dimensional accuracy of the mold cavity, and thus improves the forming quality and consistency of the connecting rod product.

[0010] Preferably, the lower die and the upper die are provided with a limiting plate, the limiting plate outer surface is threadedly connected with a positioning bolt, the positioning bolt is provided with two identical positioning bolts, one of the positioning bolts penetrates the limiting plate and extends into the interior of the lower die, and the other positioning bolt penetrates the limiting plate and extends into the interior of the upper die.

[0011] Through the above technical scheme, the combination of the limiting plate and the positioning bolt provides reliable fastening connection for the upper die and the lower die, which can withstand the large pressure generated during injection molding or die casting, prevent the upper and lower dies from separating, ensure the stability of the mold cavity, and thus ensure the dimensional accuracy and surface quality of the connecting rod product.

[0012] Preferably, the mounting seat is adapted to the mounting groove, and the positioning frame is located in the interior of the mounting groove and is fixedly installed.

[0013] Through the above technical scheme, the adaptive design of the mounting seat and the mounting groove and the fixed installation of the positioning frame in the mounting groove provide a stable and accurate installation basis for the core pulling mechanism, which can ensure the positional accuracy and motion stability of the oil cylinder, connecting rod and core pulling sleeve and other components during work, reduce the core pulling error and failure risk caused by improper installation, and thus ensure the normal production of the connecting rod mold and the product quality.

[0014] Preferably, the core pulling sleeve outer surface is fixedly provided with a fixing seat, and the fixing seat is in contact with the connecting seat.

[0015] Through the technical scheme, the contact design of the fixing seat and the connecting seat provides support and guiding effect for the movement of the core-pulling sleeve, can guarantee the core-pulling sleeve to move along a predetermined track stably in the core-pulling process, avoid the core-pulling sleeve from deviating, shaking or being stuck, improve the precision and smoothness of core pulling, reduce damage to the internal structure of the connecting rod product, and improve product quality and production efficiency.

[0016] Preferably, the mounting seat, the oil cylinder, the positioning frame, the connecting head, the connecting rod and the core-pulling sleeve are provided with two same ones, and the two mounting seats, the oil cylinders, the positioning frames, the connecting heads, the connecting rods and the core-pulling sleeves are symmetrically distributed about the center line of the lower mold and the upper mold.

[0017] Through the technical scheme, the core-pulling mechanism design of the symmetric distribution can guarantee that the connecting rod is subjected to uniform core-pulling force on both sides in the core-pulling process when the mold for producing the connecting rod has a symmetric structure or needs bilateral core pulling, avoid product deformation, scratches and other defects caused by uneven unilateral core-pulling force, and improve the forming quality and dimensional accuracy of the product.

[0018] Compared with the prior art, the core-pulling mechanism for the connecting rod mold has the following beneficial effects:

[0019] 1. The core-pulling mechanism for the connecting rod mold, the contact design of the fixing seat and the connecting seat provides support and guiding effect for the movement of the core-pulling sleeve, can guarantee the core-pulling sleeve to move along a predetermined track stably in the core-pulling process, avoid the core-pulling sleeve from deviating, shaking or being stuck, improve the precision and smoothness of core pulling, reduce damage to the internal structure of the connecting rod product, and improve product quality and production efficiency.

[0020] 2. The core-pulling mechanism for the connecting rod mold, the core-pulling mechanism design of the symmetric distribution can guarantee that the connecting rod is subjected to uniform core-pulling force on both sides in the core-pulling process when the mold for producing the connecting rod has a symmetric structure or needs bilateral core pulling, avoid product deformation, scratches and other defects caused by uneven unilateral core-pulling force, and improve the forming quality and dimensional accuracy of the product.

[0021] 3. The core-pulling mechanism for the connecting rod mold, the plug-in installation mode of the plug and the plug sleeve provides quick and accurate positioning for the clamping of the upper mold and the lower mold, can greatly improve the clamping efficiency and accuracy, reduce the risk of mold damage and product forming defects caused by inaccurate clamping, and the combination of the limiting plate and the positioning bolt can further provide reliable fastening connection for the upper mold and the lower mold. In the mold production process, the combination of the limiting plate and the positioning bolt can withstand the relatively large pressure generated during injection molding or die casting, and prevent the upper mold and the lower mold from separating. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The utility model provides a three-dimensional structure diagram Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the installation structure of the lower mold and connecting seat of this utility model;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the mounting base and hydraulic cylinder of this utility model. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the three-dimensional structure of the mounting base and hydraulic cylinder of this utility model. Figures 1-5 .

[0027] The components are: 1. Lower mold; 2. Connecting seat; 3. Mounting groove; 4. Upper mold; 5. Injection port; 6. Insert block; 7. Insert sleeve; 8. Limiting plate; 9. Positioning bolt; 10. Mounting seat; 11. Hydraulic cylinder; 12. Positioning frame; 13. Connecting head; 14. Connecting rod; 15. Core pull sleeve; 16. Fixed seat. Detailed Implementation

[0028] 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.

[0029] Example 1: As Figures 2-5 As shown, the present invention provides a core-pulling mechanism for a connecting rod mold, comprising a lower mold 1 and an upper mold 4. A connecting seat 2 is fixedly installed at one end of the lower mold 1 near the upper mold 4, and an installation groove 3 is provided on the outer surface of the connecting seat 2. An injection port 5 is provided at the other end of the upper mold 4 away from the lower mold 1. Mounting seats 10 are provided on the outer surfaces of the lower mold 1 and the upper mold 4. A hydraulic cylinder 11 is fixedly installed on the outer surface of the mounting seat 10. A positioning frame 12 is fixedly installed at the other end of the mounting seat 10 away from the hydraulic cylinder 11. A connector 13 is fixedly installed at the other end of the positioning frame 12 away from the hydraulic cylinder 11. A connecting rod 14 is fixedly installed on the output shaft of the hydraulic cylinder 11. A core-pulling sleeve 15 is provided at the other end of the connecting rod 14 away from the hydraulic cylinder 11.

[0030] Specifically, the upper die 4 is fixedly installed with an insertion block 6 on the outer surface, and the lower die 1 is fixedly installed with an insertion sleeve 7 on the outer surface, and the insertion block 6 and the insertion sleeve 7 are installed in a plug-in manner, which provides quick and accurate positioning for the die closing of the upper die 4 and the lower die 1, greatly improves the efficiency and accuracy of die closing, reduces the risk of mold damage and product forming defects caused by inaccurate die closing, and reduces the difficulty of mold installation and the requirement for the skills of the operator.

[0031] Specifically, the insertion block 6 and the insertion sleeve 7 are provided in two identical ones, and the two insertion blocks 6 and the two insertion sleeves 7 are symmetrically distributed about the center line of the upper die 4, which further enhances the stability and balance of the upper die 4 and the lower die 1 during die closing, effectively prevents the mold from shifting, tilting, and other conditions during die closing, ensures the sealing performance and dimensional accuracy of the mold cavity, and thus improves the forming quality and consistency of the connecting rod product.

[0032] Specifically, the lower die 1 and the upper die 4 are provided with a limiting plate 8 on the outer surface, and the limiting plate 8 is threadedly connected with a positioning bolt 9 on the outer surface, and the positioning bolt 9 is provided in two identical ones, one of which penetrates through the limiting plate 8 and extends into the interior of the lower die 1, and the other of which penetrates through the limiting plate 8 and extends into the interior of the upper die 4, which provides reliable fastening connection for the upper die 4 and the lower die 1, can withstand the relatively large pressure generated during injection molding or die casting during mold production, prevents the upper and lower dies from separating, ensures the stability of the mold cavity, and thus ensures the dimensional accuracy and surface quality of the connecting rod product.

[0033] Embodiment Two: As shown in the following table, it is an improvement on the previous embodiment. ​

[0034] Specifically, the mounting seat 10 is adapted to the mounting groove 3, and the positioning frame 12 is located in the interior of the mounting groove 3 and is fixedly installed therein, which provides a stable and accurate installation basis for the core pulling mechanism, can ensure the positional accuracy and motion stability of the oil cylinder 11, the connecting rod 14, and the core pulling sleeve 15 and other components during work, reduces the core pulling errors and failure risks caused by improper installation, and thus ensures the normal production of the connecting rod mold and the product quality.

[0035] Specifically, the core pulling sleeve 15 is fixedly installed with a fixing seat 16 on the outer surface, and the fixing seat 16 is in contact with the connecting seat 2, which provides support and guiding action for the movement of the core pulling sleeve 15, can ensure the smooth movement of the core pulling sleeve 15 along the predetermined trajectory during core pulling, avoid the core pulling sleeve 15 from shifting, shaking, or jamming, improve the accuracy and smoothness of core pulling, reduce the damage to the internal structure of the connecting rod product, and improve the product quality and production efficiency.​

[0036] Specifically, the mounting seat 10, the oil cylinder 11, the positioning frame 12, the connecting head 13, the connecting rod 14 and the core-pulling sleeve 15 are provided with the same two, and the two mounting seats 10, the oil cylinder 11, the positioning frame 12, the connecting head 13, the connecting rod 14 and the core-pulling sleeve 15 are symmetrically distributed about the center line of the lower mold 1 and the upper mold 4, which has the advantages that the symmetrically distributed core-pulling mechanism design can ensure that both sides of the connecting rod are subjected to uniform core-pulling force during the core-pulling process, and avoid product deformation, scratches and other defects caused by uneven unilateral core-pulling force, thereby improving the forming quality and dimensional accuracy of the product.

[0037] Working principle: in use, first, the lower mold 1 is fixed on a suitable workbench, and the upper mold 4 is prepared for installation. The insertion block 6 on the outer surface of the upper mold 4 is aligned with the insertion sleeve 7 on the outer surface of the lower mold 1. The insertion block 6 and the insertion sleeve 7 are provided with two and are symmetrically distributed about the center line of the upper mold 4. This symmetric structure helps to improve the stability and accuracy of the mold clamping. The operator slowly lowers the upper mold 4, so that the insertion block 6 is smoothly inserted into the insertion sleeve 7, achieving preliminary positioning of the upper mold 4 and the lower mold 1. The quick and accurate plug-in installation method improves the mold clamping efficiency and accuracy, reduces problems caused by inaccurate mold clamping, and then the limiting plate 8 is installed at the corresponding position of the lower mold 1 and the upper mold 4. The two positioning pins 9 on the outer surface of the limiting plate 8 respectively penetrate the limiting plate 8 and extend into the interior of the lower mold 1 and the upper mold 4. By tightening the positioning pins 9, the upper and lower molds are tightly fixed together to provide a reliable fastening connection for the subsequent injection molding or die casting process, ensuring that the mold cavity can withstand a large pressure, and ensuring the dimensional accuracy and surface quality of the connecting rod product. The mounting groove 3 on the outer surface of the connecting seat 2 of the lower mold 1 is matched with the mounting seat 10 of the core-pulling mechanism. The mounting seat 10 is accurately embedded in the mounting groove 3. The positioning frame 12 is fixed in the mounting groove 3 to provide a stable and accurate installation basis for the core-pulling mechanism. The mounting seat 10, the oil cylinder 11, the positioning frame 12, the connecting head 13, the connecting rod 14 and the core-pulling sleeve 15 are provided with the same two and are symmetrically distributed about the center line of the lower mold 1 and the upper mold 4. This symmetric design is suitable for the bilateral core-pulling requirement of the connecting rod. After the mold clamping is completed, the mold cavity is filled through the injection port 5 of the upper mold 4, filling the space between the cavity and the core-pulling sleeve 15. After cooling and solidification, the connecting rod product is formed. When core-pulling is required, the oil cylinder 11 is started. The connecting rod 14 on the output shaft of the oil cylinder 11 pulls the core-pulling sleeve 15. The fixed seat 16 on the outer surface of the core-pulling sleeve 15 is in contact with the connecting seat 2 to provide support and guidance for the movement of the core-pulling sleeve 15, ensuring that the core-pulling sleeve 15 moves smoothly along the predetermined trajectory, so that both sides of the connecting rod are subjected to uniform core-pulling force, avoiding product deformation, scratches and other defects caused by uneven core-pulling force, ensuring the integrity of the internal structure of the connecting rod product, and successfully completing the core-pulling action, thereby realizing efficient and accurate production of the connecting rod mold.

[0038] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A core-pulling mechanism for a connecting rod mold comprising a lower mold (1) and an upper mold (4), characterized in that: The lower mold (1) is fixedly installed with a connecting seat (2) near one end of the upper mold (4), an installation groove (3) is formed in the outer surface of the connecting seat (2), the upper mold (4) is provided with an injection port (5) away from the other end of the lower mold (1), the outer surfaces of the lower mold (1) and the upper mold (4) are provided with a mounting seat (10), the mounting seat (10) is fixedly installed with an oil cylinder (11) on the outer surface, the other end of the mounting seat (10) away from the oil cylinder (11) is fixedly installed with a positioning frame (12), the other end of the positioning frame (12) away from the oil cylinder (11) is fixedly installed with a connecting head (13), the output shaft of the oil cylinder (11) is fixedly installed with a connecting rod (14), the other end of the connecting rod (14) away from the oil cylinder (11) is provided with a core pulling sleeve (15).

2. A core-drawing mechanism for a connecting rod mold according to claim 1, characterized in that: The outer surface of the upper mold (4) is fixedly installed with an insertion block (6), the outer surface of the lower mold (1) is fixedly installed with an insertion sleeve (7), the insertion block (6) and the insertion sleeve (7) are inserted and installed.

3. A core-drawing mechanism for a connecting rod mold according to claim 2, wherein: The insertion block (6) and the insertion sleeve (7) are provided with two same ones, and the two insertion blocks (6) and the insertion sleeves (7) are symmetrically distributed about the center line of the upper mold (4).

4. A core-drawing mechanism for a connecting rod mold according to claim 1, wherein: The outer surfaces of the lower mold (1) and the upper mold (4) are provided with a limiting plate (8), the outer surface of the limiting plate (8) is threadedly connected with a positioning bolt (9), the positioning bolt (9) is provided with two same ones, one positioning bolt (9) penetrates through the limiting plate (8) and extends into the inside of the lower mold (1), and the other positioning bolt (9) penetrates through the limiting plate (8) and extends into the inside of the upper mold (4).

5. A core-drawing mechanism for a connecting rod mold according to claim 1, wherein: The mounting seat (10) is matched with the installation groove (3), the positioning frame (12) is located in the inside of the installation groove (3) and is fixedly installed.

6. A core-drawing mechanism for a connecting rod mold according to claim 1, wherein: The outer surface of the core pulling sleeve (15) is fixedly installed with a fixing seat (16), and the fixing seat (16) is in contact with the connecting seat (2).

7. A core-drawing mechanism for a connecting rod mold according to claim 1, wherein: The mounting seat (10), the oil cylinder (11), the positioning frame (12), the connecting head (13), the connecting rod (14) and the core pulling sleeve (15) are provided with two same ones, and the two mounting seats (10), the oil cylinders (11), the positioning frames (12), the connecting heads (13), the connecting rods (14) and the core pulling sleeves (15) are symmetrically distributed about the center lines of the lower mold (1) and the upper mold (4).

Images