Extruder die with high extrusion accuracy

Abstract

The utility model discloses an extruding machine die of high extrusion precision, including upper die, lower die, the upper die middle part slidingly connected with the shunt block, the shunt block downside middle part fixedly connected with the core, the upper die both sides are equipped with the buffer groove, the buffer groove inside fixedly connected with the sliding rod, the sliding rod outside is connected with the ear, the ear is fixedly connected with the shunt block, the spring is fixedly connected between the ear lower part and the buffer groove, the spring cover is equipped in the sliding rod outside, the recess of the lower die upper part is equipped with the shunt block, the lower die middle part is equipped with the die cavity of the core, prolongs the service life of die, improves the extrusion precision of die.

Description

Technical Field

[0001] This utility model relates to the field of extrusion die technology, specifically to an extrusion die with high extrusion precision. Background Technology

[0002] Existing extrusion die has the defect of unstable extrusion pressure during use. Traditional dies are mostly rigid structures, and the instantaneous impact force of the material on the die during extrusion is large, which can easily lead to deformation of the die core or cavity, affecting the dimensional accuracy of the product. In addition, the connection stability between the buffer component and the die is insufficient, affecting the buffering effect. Utility Model Content

[0003] The purpose of this invention is to provide an extrusion die with high extrusion precision to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-precision extrusion die, comprising an upper die and a lower die, wherein a flow divider block is slidably connected to the middle of the upper die, and a die core is fixedly connected to the lower middle of the flow divider block; buffer grooves are provided on both sides of the upper die, and a sliding rod is fixedly connected inside the buffer groove; an ear is slidably connected to the outer side of the sliding rod, and the ear is fixedly connected to the flow divider block; a spring is fixedly connected between the lower part of the ear and the buffer groove, and the spring is sleeved on the outer side of the sliding rod; a groove is provided on the upper part of the lower die facing the flow divider block, and a die cavity is provided in the middle of the lower die facing the die core.

[0005] Preferably, a contact plate is fixedly connected to the upper part of the diverter block, and a protective pad is fixedly connected to the upper part of the upper mold.

[0006] Preferably, a rubber pad is fixedly connected to the inside of the upper side of the buffer groove, and the rubber pad is sleeved on the outside of the sliding rod.

[0007] Preferably, the upper mold has a vent hole that communicates with the buffer groove inside.

[0008] Preferably, the lower part of the upper mold is fixedly connected to four sets of connecting cylinders, and the upper part of the lower mold is provided with four sets of connecting holes for cooperating with the connecting cylinders. The connecting holes and the internal threads of the connecting cylinders are connected to the mounting screws.

[0009] Preferably, the lower part of the mold has four sets of receiving grooves for mounting screws.

[0010] Preferably, the diverter block completely blocks the buffer groove when it moves up and down.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses external equipment to drive the upper mold downward. During the extrusion process, the force of the material on the diverting block pushes the lug to slide downward along the sliding rod. The spring is compressed and generates a reverse elastic force to buffer the impact force. The rubber pad further absorbs the impact, extends the service life of the mold, and improves the extrusion accuracy of the mold. 2. This utility model also achieves the pre-positioning of the upper and lower molds through the cooperation of the connecting sleeve and the connecting hole. After the installation screw is tightened, the positioning accuracy is high, avoiding mold closing deviation. The cooperation of the groove and the flow divider further assists the positioning, ensuring that the mold core and the mold cavity are coaxial, improving the accuracy of the mold, and facilitating the disassembly and assembly of the upper and lower molds. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural cross-sectional view of the present invention; Figure 3 This is an enlarged view of the structure at point A of this utility model.

[0013] In the diagram: 1. Upper mold; 2. Diverter block; 3. Mold core; 4. Buffer groove; 5. Connector; 6. Sliding rod; 7. Spring; 8. Rubber pad; 9. Vent hole; 10. Contact plate; 11. Protective pad; 12. Lower mold; 13. Groove; 14. Mold cavity; 15. Connecting cylinder; 16. Connecting hole; 17. Mounting screw; 18. Receiving groove. Detailed Implementation

[0014] 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.

[0015] Please see Figure 1-3 This utility model provides a technical solution: a high-precision extrusion die, including an upper die 1 and a lower die 12. A flow divider block 2 is slidably connected to the middle of the upper die 1. A die core 3 is fixedly welded to the lower middle of the flow divider block 2 for direct extrusion forming of workpieces. Buffer grooves 4 are provided on both sides of the upper die 1. A sliding rod 6 is fixedly welded inside the buffer groove 4. A lug 5 is slidably connected to the outside of the sliding rod 6. The lug 5 is fixedly welded to the flow divider block 2. A spring 7 is fixedly welded between the lower part of the lug 5 and the buffer groove 4. The spring 7 is sleeved on the outside of the sliding rod 6 to form an elastic buffer structure. A groove 13 is provided on the upper part of the lower die 12, which is directly opposite the flow divider block 2 for accommodating the flow divider block 2 and assisting in positioning. A die cavity 14 is provided in the middle of the lower die 12, which is directly opposite the die core 3 for workpiece forming. The upper part of the diverting block 2 is fixedly welded with a contact plate 10, and the upper part of the upper mold 1 is fixedly welded with a protective pad 11. The protective pad 11 is made of wear-resistant rubber to reduce the direct wear between the upper mold 1 and the external extrusion equipment. A rubber pad 8 is bolted to the upper side of the buffer groove 4. The rubber pad 8 is sleeved on the outside of the sliding rod 6 to prevent the lug 5 from rigidly colliding with the top of the buffer groove 4 when it moves upward, and to absorb the elastic force of the spring 7 and reduce the reciprocating sway of the spring 7. The upper mold 1 has a vent 9 that communicates with the buffer groove 4. The vent 9 balances the air pressure in the buffer groove 4, prevents negative pressure from hindering the sliding of the lug 5, and reduces the accumulation of heat in the buffer groove 4. Four sets of connecting cylinders 15 are fixedly welded to the lower part of the upper mold 1. Four sets of connecting holes 16 are opened on the upper part of the lower mold 12 to match the connecting cylinders 15. The connecting holes 16 and the connecting cylinders 15 are connected by internal threads with mounting screws 17. The connecting cylinders 15 of the upper mold 1 are aligned with the connecting holes 16 of the lower mold 12 and inserted. The mounting screws 17 pass through the connecting holes 16 and the connecting cylinders 15, and the upper and lower molds 12 are fixed by the mounting screws 17. The lower mold 12 has four sets of receiving grooves 18 for mounting screws 17, and the ends of the mounting screws 17 are screwed into the receiving grooves 18 to ensure that the surface of the lower mold 12 is flat. When the diverter block 2 moves up and down, it completely blocks the buffer groove 4 to prevent debris from entering.

[0016] Working principle: When using this utility model, the mold is installed as follows: Align the connecting cylinder 15 of the upper mold 1 with the connecting hole 16 of the lower mold 12, insert it, and then pass the connecting hole 16 and the connecting cylinder 15 through the installation screw 17, and screw the end of the screw into the receiving groove 18 to complete the fixing of the upper and lower molds 12. Extrusion preparation: Align the material to be processed with the mold cavity 14, and the pressure head of the external extrusion equipment pushes the material to contact the contact plate 10 of the upper mold 1. The protective pad 11 reduces the direct wear between the material and the upper mold 1. Extrusion process: The external equipment drives the upper mold 1 to move downward. During the extrusion process, the force of the material on the diverting block 2 pushes the lug 5 to slide downward along the sliding rod 6. The spring 7 is compressed and generates a reverse elastic force to buffer the impact force. At this time, the diverting block 2 always blocks the buffer groove 4 to prevent debris from entering. The vent 9 balances the air pressure in the buffer groove 4 to avoid negative pressure from hindering the sliding of the lug 5. Demolding and reset: After extrusion, the external equipment drives the upper mold 1 to move upward, the spring 7 resets and pushes the lug 5 to move upward, and the flow divider 2 and the mold core 3 return to their original positions synchronously; if the mold needs to be disassembled, the upper and lower molds 12 can be separated by unscrewing the mounting screw 17, which is convenient to operate.

[0017] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision extrusion die, comprising an upper die (1) and a lower die (12), characterized in that: The upper mold (1) is slidably connected to a flow divider block (2) in the middle. A mold core (3) is fixedly connected to the lower middle of the flow divider block (2). Buffer grooves (4) are provided on both sides of the upper mold (1). A sliding rod (6) is fixedly connected inside the buffer groove (4). A lug (5) is slidably connected to the outside of the sliding rod (6). The lug (5) is fixedly connected to the flow divider block (2). A spring (7) is fixedly connected between the lower part of the lug (5) and the buffer groove (4). The spring (7) is sleeved on the outside of the sliding rod (6). A groove (13) is provided on the upper part of the lower mold (12) facing the flow divider block (2). A mold cavity (14) is provided in the middle of the lower mold (12) facing the mold core (3).

2. The high-precision extrusion die according to claim 1, characterized in that: The upper part of the diverting block (2) is fixedly connected to a contact plate (10), and the upper part of the upper mold (1) is fixedly connected to a protective pad (11).

3. The high-precision extrusion die according to claim 1, characterized in that: A rubber pad (8) is fixedly connected to the upper inside of the buffer groove (4), and the rubber pad (8) is sleeved on the outside of the sliding rod (6).

4. The high-precision extrusion die according to claim 1, characterized in that: The upper mold (1) has a ventilation hole (9) that communicates with the buffer groove (4).

5. The high-precision extrusion die according to claim 1, characterized in that: The upper mold (1) is fixedly connected to four sets of connecting cylinders (15) at its lower part, and the lower mold (12) is provided with four sets of connecting holes (16) for cooperating with the connecting cylinders (15) at its upper part. The connecting holes (16) and the connecting cylinders (15) are threadedly connected with mounting screws (17).

6. The high-precision extrusion die according to claim 1, characterized in that: The lower mold (12) has four sets of receiving grooves (18) for mounting screws (17).

7. The high-precision extrusion die according to claim 1, characterized in that: When the diverter block (2) moves up and down, it completely blocks the buffer groove (4).

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