A long-life styling line die

Abstract

The utility model relates to moulding equipment technical field discloses a long service life's shaping line mould, including upper die and lower die, the upper die includes upper die core and fixedly connected with its upper end's upper die plate, the lower die includes lower die core and fixedly connected with its bottom's lower die seat, the upper end fixed mounting of lower die seat has four guide rods, when using this device, through setting lower die core, upper die core respectively bushing detachable lower die insert, upper die insert, and the insert opening has integrative lower wear -resisting edge, upper wear -resisting edge, and the insert, edge and upper die core lower end's wear -resisting edge ring all are high chromium cast iron or alloy tool steel material, can effectively resist friction loss, reduce mould core wear and tear risk, after wearing, dismounts countersunk head bolt and can replace damaged component alone, sealing washer and dust cover protect bolt from rusting, convenient to replace, reduce maintenance cost greatly, prolong mould life.

Description

Technical Field

[0001] This utility model relates to the field of mold-making equipment technology, specifically to a molding line mold with a long service life. Background Technology

[0002] In the field of automated casting, molding line molds are the core equipment used to manufacture sand molds, and their performance directly affects production efficiency and casting quality. Currently, commonly used molding line molds typically adopt an integral structure or a simple insert design. The mold core directly bears the high-speed scouring of molding sand and the impact of mold closing, resulting in severe wear on key working surfaces, especially the parting surface, guide holes, and blanking areas. Existing molds are made entirely of ordinary cast iron or steel, which lacks wear resistance and has a short service life. When local wear causes dimensional deviations, the entire mold core or mold must be replaced, resulting in high maintenance costs and resource waste. Secondly, the mold closing guiding mechanism often uses a simple sliding fit between guide rods and guide sleeves, resulting in high frictional resistance and a tendency to jam and wear. This causes the mold closing accuracy to decrease over time, affecting the quality of the sand mold and even producing burrs and flash. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a molding line mold with a long service life, to solve the problem that in the existing technology, the mold core body directly bears the high-speed scouring of molding sand and the impact of mold closing, resulting in extremely severe wear on key working surfaces, especially the parting surface, guide holes, and pressure edge areas. Existing molds are made entirely of ordinary cast iron or steel, which has insufficient wear resistance and a short service life; when local wear causes dimensional deviations, the entire mold core or mold must be replaced, resulting in high maintenance costs and resource waste. Secondly, the mold closing guide mechanism often uses a simple sliding fit between guide rods and guide sleeves, resulting in high frictional resistance, easy jamming and wear, causing the mold closing accuracy to decrease over time, affecting the quality of the sand mold, and even producing flash and burrs.

[0004] This utility model is achieved through the following technical solution: A long-life molding line mold includes an upper mold and a lower mold. The upper mold includes an upper mold core and an upper template fixedly connected to its upper end. The lower mold includes a lower mold core and a lower mold base fixedly connected to its bottom. Four guide rods are fixedly installed on the upper end of the lower mold base, and each guide rod passes through the upper template. A lower mold insert is detachably fitted inside the lower mold core, and an upper mold insert is detachably fitted outside the upper mold core. A wear-resistant pressure ring is detachably installed at the lower end of the upper mold core. An integrally formed lower wear-resistant guard is provided at the opening of the lower mold insert, and an integrally formed upper wear-resistant guard is provided at the opening of the upper mold insert.

[0005] Furthermore, the lower mold insert, upper mold insert, lower wear-resistant edge protector, upper wear-resistant edge protector, and wear-resistant pressure ring are all made of high-chromium cast iron or alloy tool steel.

[0006] Furthermore, the lower wear-resistant edge is installed on the upper edge of the lower mold core, and the upper wear-resistant edge is installed on the bottom of the upper mold plate; when the mold is closed, the wear-resistant pressure ring and the lower wear-resistant edge are in close contact with each other.

[0007] Furthermore, the lower wear-resistant edge, the upper wear-resistant edge, and the wear-resistant pressure ring are all installed using countersunk bolts.

[0008] Furthermore, the countersunk bolt is accommodated in the corresponding mounting hole groove; the lower end of the nut of the countersunk bolt is provided with a sealing washer, and the upper end of the mounting hole groove is embedded with a dust cover.

[0009] Furthermore, a return spring is sleeved on the outer wall of the guide rod, and the return spring is located between the upper mold core and the lower mold core; a limiting retaining ring is provided at the upper end of the guide rod; a linear bearing is sleeved at the connection gap between the guide rod and the upper template, and a conical dust cover is provided at the upper end of the linear bearing and sleeved on the outer wall of the guide rod.

[0010] Furthermore, the linear bearing is provided with retaining rings at both the upper and lower ends, with the two retaining rings located on the upper and lower sides of the upper template, respectively; the inner wall of the linear bearing is provided with a plurality of balls.

[0011] The beneficial effects of this utility model are as follows: This utility model features a lower mold core and an upper mold core that are respectively fitted with detachable lower mold inserts and upper mold inserts. The insert openings have integrally formed lower and upper wear-resistant guards. The inserts, guards, and the wear-resistant pressure ring at the lower end of the upper mold core are all made of high-chromium cast iron or alloy tool steel, which can effectively resist frictional wear and reduce the risk of mold core wear. After wear, the damaged parts can be replaced individually by removing the countersunk bolts. The sealing gaskets and dust covers protect the bolts from rust, making replacement convenient, significantly reducing maintenance costs, and extending the mold life. This invention features a guide rod that penetrates the upper mold plate. A linear bearing with balls in the gap between the guide rod and the upper mold plate converts sliding friction into rolling friction, reducing wear. A retaining spring fixes the bearing position. A reset spring on the guide rod assists in the upper mold's reset, a limit ring prevents the upper mold from detaching, and a conical dust cover prevents impurities from entering the bearing, avoiding wear and jamming. This ensures stable operation of the guide rod and improves the accuracy and reliability of mold opening and closing.

[0012] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of a molding line mold with a long service life according to this utility model; Figure 2 This is a front sectional view of a molding line mold with a long service life according to the present invention. Figure 3 This is an exploded structural diagram of the lower mold core in a molding line mold with a long service life according to this utility model. Figure 4 This is an exploded structural diagram of the upper mold core in a molding line mold with a long service life according to this utility model. Figure 5 This is an enlarged view of A in a molding line mold with a long service life according to this utility model; Figure 6 This is an exploded view of the guide rod in a molding line mold with a long service life according to this utility model; Figure 7 This is a cross-sectional view of a linear bearing in a molding die with a long service life according to this utility model. In the diagram: 1. Upper mold core; 2. Lower mold core; 3. Lower mold base; 4. Upper mold plate; 5. Guide rod; 51. Return spring; 52. Limiting ring; 53. Linear bearing; 54. Conical dust cover; 55. Snap ring; 56. Ball bearing; 6. Lower mold insert; 7. Upper mold insert; 61. Lower wear-resistant edge protector; 71. Upper wear-resistant edge protector; 8. Wear-resistant pressure ring; 9. Countersunk bolt; 91. Sealing gasket; 92. Dust cover. Detailed Implementation

[0014] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0015] Please see Figure 1-7This utility model provides a technical solution for a molding line mold with a long service life: a molding line mold with a long service life includes an upper mold and a lower mold. The upper mold includes an upper mold core 1 and an upper template 4 fixedly connected to its upper end. The lower mold includes a lower mold core 2 and a lower mold base 3 fixedly connected to its bottom. Four guide rods 5 are fixedly installed on the upper end of the lower mold base 3, and each guide rod 5 passes through the upper template 4. A lower mold insert 6 is detachably sleeved on the inner side of the lower mold core 2, and an upper mold insert 7 is detachably sleeved on the outer side of the upper mold core 1. A wear-resistant pressure ring 8 is detachably installed on the lower end of the upper mold core 1. An integrally formed lower wear-resistant guard 61 is provided at the opening of the lower mold insert 6, and an integrally formed upper wear-resistant guard 71 is provided at the opening of the upper mold insert 7. This long-life molding line mold achieves its forming function through the coordinated action of the upper and lower molds. The upper mold consists of an upper mold core 1 and an upper template 4 fixedly connected to its upper end. The lower mold consists of a lower mold core 2 and a lower mold base 3 fixedly connected to its bottom. Four guide rods 5, fixedly installed at the upper end of the lower mold base 3, pass through the upper template 4, precisely guiding the movement trajectory of the upper mold during mold closing and opening, preventing misalignment between the upper and lower molds and thus avoiding mold wear. A lower mold insert 6, detachably fitted inside the lower mold core 2, and an upper mold insert 7, detachably fitted outside the upper mold core 1, can... After the insert wears out, it can be replaced separately without replacing the entire mold core, reducing mold maintenance costs and extending the overall service life. The wear-resistant pressure ring 8, which can be detachably installed at the lower end of the upper mold core 1, can reduce the direct friction between the upper mold core 1 and the lower mold components when the mold is closed. At the same time, the lower wear-resistant guard 61, which is integrally formed at the opening of the lower mold insert 6, and the upper wear-resistant guard 71, which is integrally formed at the opening of the upper mold insert 7, can enhance the wear resistance of the insert opening and prevent the opening from being damaged quickly due to frequent contact. This further improves the overall wear resistance of the mold and achieves the design goal of a long mold service life.

[0016] The lower die insert 6, upper die insert 7, lower wear-resistant edge protector 61, upper wear-resistant edge protector 71, and wear-resistant pressure ring 8 are all made of high-chromium cast iron or alloy tool steel. The reason for using high-chromium cast iron or alloy tool steel for these components is that they possess high hardness and excellent wear resistance. During mold operation, the lower die insert 6 and lower die core 2, and the upper die insert 7 and upper die core 1 will experience relative friction. The lower wear-resistant edge protector 61, upper wear-resistant edge protector 71, and wear-resistant pressure ring 8 will also frequently come into contact with and rub against other components. The high hardness and high wear resistance of these materials effectively resist these frictional forces, reducing surface wear and preventing a decrease in mold forming accuracy or the need for frequent component replacement due to rapid wear. This ensures long-term stable mold operation and extends its overall service life.

[0017] The lower wear-resistant edge protector 61 is installed on the upper edge of the lower mold core 2, and the upper wear-resistant edge protector 71 is installed on the bottom of the upper mold plate 4. During mold closing, the wear-resistant pressure ring 8 and the lower wear-resistant edge protector 61 are in close contact. The installation method ensures that the lower wear-resistant edge protector 61 and the upper wear-resistant edge protector 71 are precisely matched with the lower mold core 2 and the upper mold plate 4, respectively, avoiding positional displacement of the edge protectors that would affect the overall fitting accuracy of the mold and ensuring the quality of the molded product. During mold closing, the wear-resistant pressure ring 8 and the lower wear-resistant edge protector 61 are in close contact, which not only provides a stable pressure effect on the molded material through the wear-resistant pressure ring 8, but also reduces the direct friction between the upper mold core 1 and the lower mold core 2 through their close contact. At the same time, the wear resistance of the lower wear-resistant edge protector 61 further reduces wear, extends the service life of related components, and ensures a stable and reliable mold closing and molding process.

[0018] The lower wear-resistant edge protector 61, the upper wear-resistant edge protector 71, and the wear-resistant pressure ring 8 are all installed using countersunk bolts 9. The countersunk bolts 9 provide a stable connection force, firmly fixing these components in their corresponding installation positions. This prevents the lower wear-resistant edge protector 61, the upper wear-resistant edge protector 71, or the wear-resistant pressure ring 8 from loosening or shifting during the vibration and impact of the mold during compound molding and mold opening. This avoids a decrease in mold fitting accuracy or additional wear due to component loosening. Simultaneously, the countersunk design of the bolts 9 prevents the bolt heads from protruding beyond the component surface, preventing interference with other components and affecting the normal movement of the mold. This ensures stable and coordinated operation of all components, guaranteeing the mold's performance and service life.

[0019] The countersunk bolt 9 is accommodated in the corresponding mounting hole groove; the lower end of the nut of the countersunk bolt 9 is provided with a sealing washer 91, and the upper end of the mounting hole groove is embedded with a dust cover 92. The countersunk bolt 9 being accommodated in the corresponding mounting hole groove prevents the bolt from protruding entirely from the component surface, ensuring the flatness of the component surface and preventing interference between the bolt and other components during mold movement; the sealing washer 91 at the lower end of the nut of the countersunk bolt 9 enhances the sealing of the bolt connection, preventing external dust, oil, or coolant impurities from entering the gap between the bolt and the mounting hole, thus preventing the bolt from rusting or loosening due to impurities; the dust cover 92 embedded at the upper end of the mounting hole groove further blocks dust and other impurities from entering the mounting hole, providing double protection for the countersunk bolt 9 and the mounting hole, ensuring the long-term stability of the bolt connection structure, reducing mold maintenance due to bolt failure, and extending the mold's service life.

[0020] In this embodiment, as Figure 6 and Figure 7As shown, a reset spring 51 is sleeved on the outer wall of the guide rod 5, and the reset spring 51 is located between the upper mold core 1 and the lower mold core 2; a limiting retaining ring 52 is provided at the upper end of the guide rod 5; a linear bearing 53 is sleeved at the connection gap between the guide rod 5 and the upper template 4, and a conical dust cover 54 is sleeved on the upper end of the linear bearing 53 and attached to the outer wall of the guide rod 5. A return spring 51, sleeved on the outer wall of the guide rod 5 and located between the upper mold core 1 and the lower mold core 2, is compressed and stores elastic potential energy when the mold is closed. After the mold closing operation is completed, the return spring 51 releases the elastic potential energy, which can push the upper mold to automatically return to its original position, facilitating the next mold opening and part removal operation, reducing the number of manual reset steps, and avoiding component collision and wear caused by untimely or inaccurate upper mold reset. The limiting ring 52 set at the upper end of the guide rod 5 can limit the maximum stroke of the upper mold to return to its original position, preventing the upper mold from detaching from the guide rod 5 due to excessive reset, ensuring the integrity of the mold structure and the safety of use. The linear bearing 53 sleeved at the gap between the guide rod 5 and the upper mold plate 4 can convert the sliding friction between the guide rod 5 and the upper mold plate 4 into rolling friction, greatly reducing the friction coefficient between the two and reducing wear. The conical dust cover 54 sleeved on the outer wall of the guide rod 5 at the upper end of the linear bearing 53 can prevent dust, debris and other impurities from entering the interior of the linear bearing 53, preventing impurities from affecting the rolling performance of the bearing or causing bearing wear, ensuring the smooth operation of the guide mechanism for a long time, extending the life of the guide components, and thus improving the overall service life of the mold. The linear bearing 53 has retaining rings 55 at both its upper and lower ends, with the two retaining rings 55 located on the upper and lower sides of the upper mold plate 4, respectively. The inner wall of the linear bearing 53 is provided with several balls 56. The retaining rings 55 at both ends of the linear bearing 53, located on the upper and lower sides of the upper mold plate 4, provide axial positioning and fixation for the linear bearing 53, preventing vertical displacement of the linear bearing 53 due to the axial movement of the guide rod 5 or mold vibration during operation. This ensures that the linear bearing 53 remains within the fit clearance between the guide rod 5 and the upper mold plate 4, guaranteeing stable guiding function. The balls 56 on the inner wall of the linear bearing 53 enable rolling friction. When the guide rod 5 and the upper mold plate 4 move relative to each other, the balls 56 roll between the inner and outer rings of the bearing, replacing the direct contact of traditional sliding friction. This significantly reduces frictional resistance and component wear, ensuring smoother and more precise relative movement between the guide rod 5 and the upper mold plate 4. It avoids guide jamming or component damage caused by excessive friction, thereby extending the service life of the linear bearing 53 and the guide rod 5, and ensuring the normal operation and long service life of the entire mold.

[0021] Working principle: When using the mold, the lower mold is first fixed by the lower mold base 3, and the upper mold moves with the equipment drive. Before mold closing, the guide rod 5 passes through the upper mold plate 4, and the ball bearing 56 in the linear bearing 53 converts sliding friction into rolling friction, reducing guide wear. The conical dust cover 54 prevents impurities from entering the bearing, and the retaining spring 55 fixes the bearing position. When the mold closes, the return spring 51 is compressed, and the wear-resistant pressure ring 8 fits against the lower wear-resistant guard 61 to avoid direct friction between the upper mold core 1 and the lower mold core 2. The upper wear-resistant guard 71 and the lower wear-resistant guard 61 enhance the wear resistance of the bushing opening, and the lower mold bushing 6, the upper mold bushing 7, and all wear-resistant parts are made of high-chromium cast iron or alloy tool steel for further wear resistance.

[0022] When the mold opens, the return spring 51 releases potential energy to push the upper mold back to its original position, and the limit ring 52 prevents the upper mold from disengaging from the guide rod 5. If the bushing or wear-resistant parts wear after long-term use, the countersunk bolt 9 can be removed (its sealing gasket 91 and dust cover 92 have previously protected the bolt from corrosion), and the lower mold bushing 6, upper mold bushing 7, or wear-resistant pressure ring 8 can be replaced separately without replacing the entire mold core, reducing maintenance costs and ensuring long-term use of the mold.

[0023] 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 way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A molding line mold with a long service life, comprising an upper mold and a lower mold, characterized in that: The upper mold includes an upper mold core (1) and an upper template (4) fixedly connected to its upper end. The lower mold includes a lower mold core (2) and a lower mold base (3) fixedly connected to its bottom. Four guide rods (5) are fixedly installed on the upper end of the lower mold base (3), and each guide rod (5) passes through the upper template (4). A lower mold insert (6) is detachably sleeved on the inner side of the lower mold core (2), and an upper mold insert (7) is detachably sleeved on the outer side of the upper mold core (1). A wear-resistant pressure ring (8) is detachably installed on the lower end of the upper mold core (1). An integrally formed lower wear-resistant guard (61) is provided at the opening of the lower mold insert (6), and an integrally formed upper wear-resistant guard (71) is provided at the opening of the upper mold insert (7).

2. The molding line mold with a long service life according to claim 1, characterized in that: The lower die insert (6), upper die insert (7), lower wear-resistant edge protector (61), upper wear-resistant edge protector (71) and wear-resistant pressure ring (8) are all made of high-chromium cast iron or alloy tool steel.

3. The molding line mold with a long service life according to claim 1, characterized in that: The lower wear-resistant edge protector (61) is installed on the upper edge of the lower mold core (2), and the upper wear-resistant edge protector (71) is installed on the bottom of the upper template (4); when the mold is closed, the wear-resistant pressure ring (8) and the lower wear-resistant edge protector (61) fit together.

4. A molding line mold with a long service life according to claim 3, characterized in that: The lower wear-resistant edge protector (61), the upper wear-resistant edge protector (71), and the wear-resistant pressure ring (8) are all installed by countersunk bolts (9).

5. A molding line mold with a long service life according to claim 4, characterized in that: The countersunk bolt (9) is accommodated in the corresponding mounting hole groove; the lower end of the nut of the countersunk bolt (9) is provided with a sealing washer (91), and the upper end of the mounting hole groove is fitted with a dust cover (92).

6. A molding line mold with a long service life according to claim 1, characterized in that: A reset spring (51) is sleeved on the outer wall of the guide rod (5), and the reset spring (51) is located between the upper mold core (1) and the lower mold core (2); a limiting ring (52) is provided at the upper end of the guide rod (5); a linear bearing (53) is sleeved at the connection gap between the guide rod (5) and the upper template (4), and a conical dust cover (54) is provided at the upper end of the linear bearing (53) and sleeved on the outer wall of the guide rod (5).

7. A molding line mold with a long service life according to claim 6, characterized in that: The linear bearing (53) is provided with retaining rings (55) at both the upper and lower ends, and the two retaining rings (55) are respectively located on the upper and lower sides of the upper template (4); the inner wall of the linear bearing (53) is provided with a number of balls (56).

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