Extrusion die changing tooling

Abstract

This utility model discloses a die-changing fixture for an extrusion press, specifically relating to the field of extrusion press dies. It includes a base plate, with a support plate connected to one upper side of the base plate. Guide rods are connected to one side of each support plate, with four sets of guide rods distributed at the upper and lower parts of one side of the support plate. A stabilizing mechanism is connected to one end of each guide rod to improve the stability of the die body. An extrusion mechanism is connected to the middle of one side of the support plate. This utility model achieves die preheating and die changing, as well as self-cooling of the old die, through the die-changing mechanism, significantly improving the convenience of die changing and production continuity. Simultaneously, the stabilizing mechanism ensures the stability of the die, and the lateral positioning of the die ensures precise alignment between the die and the feed inlet, preventing displacement during extrusion and providing reliable support for the forming quality of aluminum profiles.

Description

Technical Field

[0001] This utility model relates to the field of extrusion die technology, and more specifically, to extrusion die changing tooling. Background Technology

[0002] Aluminum profile extrusion presses are key equipment in metal processing. They extrude heated and softened aluminum billets under high pressure through a die with a specific die shape to obtain aluminum profile products with a predetermined cross-sectional shape. In actual production, in order to meet the processing needs of aluminum profiles of different specifications and shapes, it is necessary to frequently change the extrusion press die. As the core component that directly determines the forming quality of aluminum profiles, the die replacement efficiency and installation accuracy directly affect the continuity of production and the product qualification rate. Therefore, how to achieve rapid and accurate die changeover has always been an important research direction for improving production efficiency in the aluminum profile processing industry.

[0003] Extrusion die needs to maintain a high temperature through self-heating during operation. At the same time, it is in continuous contact with the high-temperature aluminum billet during the extrusion process, further absorbing heat to prevent heat loss. Ultimately, this keeps the die in a high-temperature state, which leads to significant operational difficulties when changing the die. On the one hand, direct contact with the high-temperature die can easily cause burns to the operator, posing a serious safety hazard. On the other hand, the rigidity and stability of the die change under high temperature. Manual handling or docking can easily cause the die to deform or be damaged due to bumps, affecting the subsequent forming accuracy. As a result, in the traditional die changeover process, it is necessary to wait for the die to cool down naturally before disassembly and installation, resulting in excessive downtime of the equipment. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a tooling for changing extrusion molds.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An extrusion die changing fixture includes a base plate, a support plate connected to one upper side of the base plate, and guide rods connected to one side of each support plate. There are four sets of guide rods distributed on the upper and lower parts of one side of the support plate. One end of each guide rod is connected to a stabilizing mechanism to improve the stability of the die body. An extrusion mechanism is connected to the middle of one side of the support plate to extrude material into the die body. A die changing mechanism is connected to both sides of the base plate corresponding to the first stabilizing plate. The die changing mechanism includes two sets of support plates, one end of which is connected to one side of the base plate. Each support plate has two sets of slide rails connected to its upper end, the lower ends of which are connected to one upper side of the base plate. A sliding plate is slidably connected to the upper end of each slide rail. A first support block is connected to one side of the upper end of the sliding plate, and a second support block is connected to the other side of the upper end of the sliding plate.

[0007] Preferably, the stabilizing mechanism includes a first stabilizing plate, one side of which is connected to one end of a plurality of guide rods, the lower end of the first stabilizing plate is connected to one side of the upper end of the base plate, and a second stabilizing plate is connected to the upper end of the base plate corresponding to the first stabilizing plate.

[0008] Preferably, the shape of the first stabilizing plate is adapted to the shape of the second stabilizing plate, and a feeding port is provided in the middle of one side of the second stabilizing plate and the middle of one side of the first stabilizing plate. An output cylinder is connected to one side of the second stabilizing plate corresponding to the feeding port.

[0009] Preferably, the extrusion mechanism includes a hydraulic cylinder, one end of which extends through to one side of the support plate, and one end of the hydraulic cylinder is connected to a guide block. The guide block slides on the outer wall of a plurality of guide rods, and the guide block has guide holes at each of the plurality of guide rods. The plurality of guide rods are respectively located inside the plurality of guide holes, and a push rod is connected to the middle of one side of the guide block.

[0010] Preferably, the upper ends of the first support block and the second support block are connected to clamping blocks, the lower ends of the two clamping blocks are respectively connected to the first support block and the second support block, and the lower parts of both sides of the two clamping blocks, the upper parts of both sides of the first support block and the upper parts of both sides of the second support block are connected to mounting blocks. The number of mounting blocks is eight sets, and the four upper mounting blocks are fixedly connected to the four lower mounting blocks by mounting bolts.

[0011] Preferably, mounting grooves are provided at the lower middle of the two clamping blocks, the upper middle of the first support block, and the upper middle of the second support block. Connecting covers are connected to the inner walls of the multiple mounting grooves. Heating tubes are connected to the inner walls of the connecting covers. The connecting covers are semi-arc-shaped, and the shape of the heating tubes is adapted to the shape of the connecting covers.

[0012] Preferably, the upper ends of the inner walls of the two lower connecting covers are connected to mold bodies, and the two mold bodies are respectively connected to the lower ends of the inner walls of the two upper connecting covers.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. By setting up the first and second support blocks, when the mold on the first support block is performing extrusion operations, the new mold can be simultaneously installed in the connecting cover of the second support block, and the new mold can be preheated by the heating pipe so that the new mold reaches the working temperature required for extrusion in advance. When it is necessary to change the mold, there is no need to wait for the old mold to cool down. The hot old mold that has completed the operation can be moved out of the working area with the first support block by driving the slide plate through the electric control slide rail. At the same time, the new mold that has been preheated on the second support block is moved into the working position, and the extrusion operation can be resumed directly. The old mold that has been moved out can cool down on its own in the non-working area with the first support block without manual intervention. This avoids the downtime waste of waiting for the mold to cool down in the traditional mold change and saves the tedious operation of manually moving the hot old mold, which significantly improves the continuity of the production process.

[0015] 2. The first and second stabilizing plates in the stabilizing mechanism form a symmetrical limiting structure. When the mold moves into the working area with the support block, the two stabilizing plates can form lateral constraints from both sides of the mold, ensuring precise alignment between the mold inlet and the feed port on the stabilizing plate, preventing lateral displacement of the mold during extrusion. Simultaneously, the clamping block and mounting block, in conjunction with the longitudinal clamping and fixing of the mold, further resist the axial force generated by the aluminum billet on the mold during extrusion, preventing mold loosening or displacement. Through the coordinated operation of the stabilizing mechanism and clamping components, mold stability is ensured from both lateral positioning and longitudinal fixing dimensions, providing reliable support for the quality of aluminum profile forming. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the device;

[0017] Figure 2 This is a three-dimensional structural diagram of the first and second stabilizing plates;

[0018] Figure 3 This is a three-dimensional structural diagram of the mold changing mechanism;

[0019] Figure 4 This is a schematic diagram of the installation structure of the connecting cover, the clamping block, and the first support block;

[0020] Figure 5 This is a schematic diagram of the connection structure between the output cylinder and the second stabilizing plate.

[0021] Figure 6 This is a schematic diagram of the structure for opening the mounting slot.

[0022] The attached figures are labeled as follows: 1. Base plate; 2. Support plate; 3. Guide rod; 4. First stabilizing plate; 5. Second stabilizing plate; 6. Output cylinder; 7. Hydraulic cylinder; 8. Guide block; 9. Push rod; 10. Support plate; 11. Slide rail; 12. Slide plate; 13. First support block; 14. Second support block; 15. Clamping block; 16. Mounting block; 17. Mounting groove; 18. Connecting cover; 19. Heating tube; 20. Mold body. Detailed Implementation

[0023] 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.

[0024] Refer to the instruction manual appendix Figures 1-6 As shown, the extrusion die changing fixture of this utility model embodiment includes a base plate 1, a support plate 2 connected to one side of the upper end of the base plate 1, and guide rods 3 connected to one side of the support plate 2. There are four sets of guide rods 3, which are distributed on the upper and lower parts of one side of the support plate 2. One end of each guide rod 3 is connected to a stabilizing mechanism, which is used to improve the stability of the die body 20. An extrusion mechanism is connected to the middle of one side of the support plate 2. The extrusion mechanism includes a hydraulic cylinder 7, one end of which extends through to one side of the support plate 2. One end of the hydraulic cylinder 7 is connected to a guide block 8, which slides on the outer wall of the multiple guide rods 3. Guide holes are opened at the guide block 8 corresponding to the multiple guide rods 3. The multiple guide rods 3 are located inside the multiple guide holes. A push rod 9 is connected to the middle of one side of the guide block 8. The extrusion mechanism extrudes the material into the die body 20. A die changing mechanism is connected to both sides of the base plate 1 corresponding to one side of the first stabilizing plate 4.

[0025] The guide rod 3 limits the guide block 8 from both the top and bottom directions to prevent the push rod 9 from being misaligned with the mold inlet. The stabilizing mechanism can improve the stability of the mold body 20. During the extrusion operation, the mold body 20 is laterally limited to prevent the mold from shifting due to the extrusion force of the aluminum billet, thus ensuring the forming accuracy of the aluminum profile. The mold changing mechanism can realize the rapid replacement of the mold body 20, preheating, and temporary storage of hot molds, reducing equipment downtime.

[0026] The stabilizing mechanism includes a first stabilizing plate 4, one side of which is connected to one end of a plurality of guide rods 3. The lower end of the first stabilizing plate 4 is connected to one side of the upper end of the base plate 1. A second stabilizing plate 5 is connected to the upper end of the base plate 1 corresponding to the first stabilizing plate 4. The shape of the first stabilizing plate 4 is adapted to the shape of the second stabilizing plate 5. A feeding port is opened in the middle of one side of the second stabilizing plate 5 and the middle of one side of the first stabilizing plate 4. An output cylinder 6 is connected to one side of the second stabilizing plate 5 corresponding to the feeding port.

[0027] The first stabilizing plate 4 and the second stabilizing plate 5 work together to form the working cavity of the mold. The first stabilizing plate 4 and the second stabilizing plate 5 can form a closed material conveying channel to prevent the aluminum billet from overflowing from the gap during the extrusion process. The feed port is used to provide a conveying channel for the high-temperature aluminum billet, so that the aluminum billet can smoothly enter the mold body 20. The output cylinder 6 can guide the extruded aluminum profile to be discharged in a preset direction to prevent the profile from bending or being damaged by collision during discharge.

[0028] The mold changing mechanism includes two sets of pallets 10. One end of each pallet 10 is connected to one side of the base plate 1. Each pallet 10 has a slide rail 11 connected to its upper end. The lower ends of each slide rail 11 are connected to one side of the upper end of the base plate 1. A slide plate 12 is slidably connected to the upper end of each slide rail 11. A first support block 13 is connected to one side of the upper end of the slide plate 12, located between the first stabilizing plate 4 and the second stabilizing plate 5. A second support block 14 is connected to the other side of the upper end of the slide plate 12. Both the first support block 13 and the second support block 14 have clamping blocks 15 connected to their upper ends. The lower ends of the two clamping blocks 15 are connected to the first support block 13 and the second support block 14, respectively. The lower sides of the two clamping blocks 15 and the first support block 14 are connected to each other. Mounting blocks 16 are connected to the upper parts of both sides and the upper parts of both sides of the second support block 14. There are eight sets of mounting blocks 16. The four upper mounting blocks 16 are fixedly connected to the four lower mounting blocks 16 by mounting bolts. The lower middle part of the two clamping blocks 15, the upper middle part of the first support block 13, and the upper middle part of the second support block 14 are all provided with mounting grooves 17. The inner walls of the multiple mounting grooves 17 are all connected with connecting covers 18. The inner walls of the connecting covers 18 are all connected with heating tubes 19. The shape of the connecting covers 18 is a semi-arc structure. The shape of the heating tubes 19 is adapted to the shape of the connecting covers 18. The upper ends of the inner walls of the two lower connecting covers 18 are connected with mold bodies 20. The two mold bodies 20 are respectively connected to the lower ends of the inner walls of the two upper connecting covers 18.

[0029] The support plate 10 is used to support the slide rail 11, improve the stability of the connection between the slide rail 11 and the base plate 1, and prevent the slide rail 11 from deforming due to bearing the weight of the mold. The slide rail 11 is an electrically controlled slide rail 11 that can drive the precise movement of the slide plate 12, ensuring that the first support block 13 and the second support block 14 can be accurately switched to the working position, realizing the alternating switching of the two molds. The first support block 13 is used to support the mold body 20 in the working state, providing a stable support base for the mold. The clamping block 15 cooperates with the first support block 13 or the second support block 14 to clamp and fix the mold body 20 from the top and bottom, preventing the mold from loosening or shifting during movement or extrusion. The mounting groove 17 is used to accommodate the connecting cover 18 and the mold body 20, providing a precise installation and positioning space for the mold. The connecting cover 18 allows the heating tube 19 to fit tightly against the outer wall of the mold, increasing the heat transfer area and realizing uniform heating of the mold. The two ends of the mold body 20 are in contact with the first stabilizing plate 4 and the second stabilizing plate 5, respectively.

[0030] Working principle: In the initial state of use, the first support block 13 is located in the working area between the first stabilizing plate 4 and the second stabilizing plate 5. The mold body 20 is fixed inside the connecting cover 18 on the lower side of its upper end, and the clamping block 15 is fixed above the first support block 13 by the mounting block 16 and the mounting bolt, so that the upper and lower connecting covers 18 form a wrapping clamp on the mold. At this time, the heating tube 19 continues to work, heating the mold to a suitable process temperature, and the extrusion mechanism is in the standby state.

[0031] When aluminum profile extrusion is performed, hydraulic cylinder 7 is activated, pushing guide block 8 to slide stably along four sets of guide rods 3, thereby driving push rod 9 to advance towards the mold, pushing the preheated aluminum billet to the feed port of the first stabilizing plate 4 and the second stabilizing plate 5, and forcing the aluminum billet to be extruded through the cavity of the mold body 20 to form an aluminum profile with a corresponding cross section. The formed profile is discharged through the output cylinder 6 on one side of the second stabilizing plate 5, completing the continuous extrusion operation.

[0032] When it is necessary to change the mold to produce aluminum materials of different shapes, first stop heating the mold above the first support block 13, but at this time the mold is still at a high temperature. At the same time, pre-install the new mold on the side of the second support block 14: place the new mold body 20 in the lower connecting cover 18 at the upper end of the second support block 14, ensuring that the bottom of the mold fits in close contact with the semi-circular connecting cover 18. Then, fasten the clamping block 15 on the upper part of the mold, so that the top of the mold is embedded in the mounting groove 17 at the lower end of the clamping block 15. By aligning the four mounting blocks 16, use mounting bolts to fasten the clamping block 15 to the second support block 14 to achieve rigid fixation of the new mold and prevent loosening during movement. At the same time, start the heating tube 19 corresponding to the second support block 14 to preheat the new mold.

[0033] After the new mold is preheated, the hydraulic cylinder 7 is controlled to drive the push rod 9 to return to its initial position, ensuring that the push rod 9 is completely separated from the old mold. Then, the slide rail 11 is activated, driving the slide plate 12 to slide smoothly along the slide rail 11. The slide plate 12 drives the first support block 13 and the second support block 14 to move synchronously, so that the first support block 13, together with the hot old mold, is moved out of the working area between the first stabilizing plate 4 and the second stabilizing plate 5. At the same time, the new mold that has been preheated on the second support block 14 is accurately pushed into the working area. At this time, the feed port of the new mold is automatically aligned with the feed port of the first stabilizing plate 4 and the second stabilizing plate 5. The two stabilizing plates form a lateral limit on the new mold, completing the mold changing action.

[0034] After the mold change is completed, the extrusion mechanism can be restarted to produce aluminum profiles of new specifications. The removed hot old mold can stay in the non-working area with the first support block 13 to cool naturally. After the temperature drops to a safe range, the installation bolts can be loosened to remove the old mold. The whole process does not require direct manual contact with the high-temperature mold.

[0035] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0036] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0037] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A die changing tool for an extrusion press comprising a base plate (1) characterised in that: A support plate (2) is connected to one side of the upper end of the base plate (1). Guide rods (3) are connected to one side of each support plate (2). There are four sets of guide rods (3). The guide rods (3) are distributed on the upper and lower parts of one side of the support plate (2). One end of each guide rod (3) is connected to a stabilizing mechanism. The stabilizing mechanism is used to improve the stability of the mold body (20). An extrusion mechanism is connected to the middle of one side of the support plate (2). The extrusion mechanism extrudes the material into the mold body (20). A mold changing mechanism is connected to both sides of the base plate (1) at the side corresponding to the first stabilizing plate (4). The mechanism includes a pallet (10), and there are two sets of pallets (10). One end of each pallet (10) is connected to both sides of the base plate (1). The upper ends of each pallet (10) are connected to slide rails (11). There are two sets of slide rails (11). The lower ends of each slide rail (11) are connected to one side of the upper end of the base plate (1). The upper ends of each slide rail (11) are slidably connected to a slide plate (12). One side of the upper end of the slide plate (12) is connected to a first support block (13), and the other side of the upper end of the slide plate (12) is connected to a second support block (14).

2. The extruder die changing tooling of claim 1, wherein: The stabilizing mechanism includes a first stabilizing plate (4), one side of which is connected to one end of a plurality of guide rods (3), the lower end of the first stabilizing plate (4) is connected to one side of the upper end of the base plate (1), and a second stabilizing plate (5) is connected to the upper end of the base plate (1) corresponding to the first stabilizing plate (4).

3. The extruder die changing tooling of claim 2, wherein: The shape of the first stabilizing plate (4) is adapted to the shape of the second stabilizing plate (5). A feeding port is provided on the middle of one side of the second stabilizing plate (5) and the middle of one side of the first stabilizing plate (4). An output cylinder (6) is connected to the side of the second stabilizing plate (5) corresponding to the feeding port.

4. The extruder die changing tooling of claim 3, wherein: The extrusion mechanism includes a hydraulic cylinder (7), one end of which extends through to one side of the support plate (2), and one end of which is connected to a guide block (8). The guide block (8) slides on the outer wall of multiple guide rods (3). The guide block (8) has guide holes at each of the multiple guide rods (3), and the multiple guide rods (3) are located inside the multiple guide holes. A push rod (9) is connected to the middle of one side of the guide block (8).

5. The extruder die changing tooling of claim 1, wherein: The upper ends of the first support block (13) and the second support block (14) are connected to clamping blocks (15). The lower ends of the two clamping blocks (15) are connected to the first support block (13) and the second support block (14) respectively. The lower parts of the two clamping blocks (15), the upper parts of the first support block (13) and the upper parts of the second support block (14) are connected to mounting blocks (16). There are eight sets of mounting blocks (16). The four upper mounting blocks (16) are fixedly connected to the four lower mounting blocks (16) by mounting bolts.

6. The extruder die changing tooling of claim 5, wherein: The lower middle of the two clamping blocks (15), the upper middle of the first support block (13), and the upper middle of the second support block (14) are all provided with mounting grooves (17). The inner walls of the multiple mounting grooves (17) are connected with connecting covers (18). The inner walls of the connecting covers (18) are all connected with heating tubes (19). The shape of the connecting cover (18) is a semi-arc structure, and the shape of the heating tube (19) is adapted to the shape of the connecting cover (18).

7. The extruder die changing tooling of claim 6, wherein: The upper ends of the inner walls of the two connecting covers (18) below are connected to the mold bodies (20), and the two mold bodies (20) are respectively connected to the lower ends of the inner walls of the two connecting covers (18) above.

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