Bidirectional reducing die with automatic ejection structure

Abstract

The invention discloses a two-way reducing mold with an automatic ejection structure, relates to the field of reducing molds, and solves the problems that an existing device still needs to be hydraulically driven to demold after extrusion forming, many steps are needed, and the operation is tedious, and the following scheme is adopted: the two-way reducing mold comprises a lower mold seat and an upper mold seat on the top side of the lower mold seat; a reducing mold is clamped between the lower mold seat and the upper mold seat; a lower spring groove, a lower sealing groove and a lower die groove are formed in the inner side of the lower type base from bottom to top, and a lower ejector rod is arranged in the bottom of the lower spring groove in the lower type base in a sliding and sleeved mode. According to the two-way reducing mold with the automatic ejection structure, through arrangement of a lower rectangular spring and an upper rectangular spring on the inner side of the lower mold base and the inner side of the upper mold base, the lower rectangular spring and the upper rectangular spring are both in a compressed state during extrusion forming, and during demolding, the upper mold base moves upwards, the lower rectangular spring on the inner side of the lower mold base is reset due to the elasticity of the lower rectangular spring; and the lower plugging head and the reducing die on the top side are synchronously extruded to move upwards, so that the automatic ejection effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of diameter reducing dies, in particular to a bidirectional diameter reducing die with an automatic ejection structure. Background Art

[0002] In the automotive manufacturing industry, some forgings require the diameter reduction operation on both ends of the billet during the forging process, so that the two ends of the billet become thinner; After searching, the application with patent number 201710320419.9 discloses a reducing die capable of realizing bidirectional reducing diameter, which comprises: an upper die seat; an upper die, which is connected to the lower part of the upper die seat, an inner cavity is formed in the upper die, the upper part of the inner cavity is filled with a sealing block, an upper die cavity is formed in the lower part of the inner cavity, and the upper die cavity is a two-stage structure, which comprises a first reducing cavity located at the lower part and a first forming cavity located at the upper part, the aperture of the first reducing cavity gradually decreases from bottom to top, the aperture of the first forming cavity remains unchanged and is equal to the minimum aperture of the first reducing cavity; a lower die seat; a lower die, which is connected to the upper part of the lower die seat, a lower die cavity is formed in the lower die, and the lower die cavity is a two-stage structure, which comprises a second reducing cavity located at the upper part and a second forming cavity located at the lower part, the aperture of the second reducing cavity gradually decreases from top to bottom, the aperture of the second forming cavity remains unchanged and is equal to the minimum aperture of the second reducing cavity; The above application documents realize mold manufacturing through the setting of various components. However, during the use of the mold, the material needs to be squeezed into the mold to achieve the effect of manufacturing short-diameter forgings at both ends. However, the extrusion and subsequent ejection are generally carried out by direct top loading of hydraulic cylinders, but the operation is cumbersome and the work efficiency is low.

[0003] Therefore, we proposed a bidirectional reducing die with an automatic ejection structure. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a bidirectional reducing die with an automatic ejection structure, which solves the problem that the prior art device still requires hydraulically driven demolding steps after extrusion molding, resulting in complicated operations.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a bidirectional reducing die with an automatic ejection structure, comprising a lower die seat and an upper die seat on the top side thereof, and a reducing die is clamped between the lower die seat and the upper die seat; The inner side of the lower mold seat is provided with a lower spring groove, a lower sealing groove and a lower mold groove from bottom to top, a lower ejector rod is slidably sleeved in the bottom of the lower spring groove in the lower mold seat, a lower rectangular spring is fixedly connected to the top of the lower ejector rod, and a lower sealing head is provided at the top of the lower rectangular spring; The inner side of the upper mold seat is provided with an upper spring groove, an upper sealing groove and an upper die groove from top to bottom. The top side sliding sleeve of the upper mold seat is provided with an upper ejector rod. The bottom end of the upper ejector rod is fixedly connected with an upper rectangular spring, and the bottom end of the upper rectangular spring is provided with an upper sealing head, and a reducing die is placed between the upper die groove and the lower die groove.

[0006] As a preferred solution of the bidirectional reducing die with automatic ejection structure of the present invention, a disc seat is provided at the bottom of the lower die seat and the top of the upper die seat, and a rod groove for setting the lower ejector rod and the upper ejector rod of the sliding sleeve is opened in the disc seat; Among them, the setting of the rod groove is convenient for the lower push rod and the upper push rod to move up and down therein, so as to achieve the effect of efficiently squeezing the lower rectangular spring and the upper rectangular spring on the outside thereof. At the same time, when the extremely heavy load lower rectangular spring and the upper rectangular spring of φ50 and length 150 are compressed to a length of 120, a compression preload of about 1t can be provided.

[0007] As a preferred solution of the bidirectional reducing die with an automatic ejection structure of the present invention, the lower sealing groove and the upper sealing groove are both wedge-shaped grooves, and the material located inside the reducing die is pressed between the lower sealing head and the upper sealing head, and the lower sealing head and the upper sealing head are both wedge-shaped heads; The wedge-shaped setting facilitates the up and down movement of the lower plugging head and the upper plugging head therein, thereby achieving the effect of correspondingly extruding and forming the material in the diameter reducing die.

[0008] As a preferred solution of the bidirectional reducing die with automatic ejection structure of the present invention, a clamping groove located outside the lower die groove is opened on the top of the lower die seat, and the specification of the clamping groove is adapted to the specification of the outer side of the bottom end of the upper die seat; Among them, the setting of the card slot can ensure the stability of the upper mold seat when it is pressed down.

[0009] As a preferred solution of the bidirectional reducing die with automatic ejection structure of the present invention, the reducing die is a die tube with a thick middle and thin ends, and the specification of the reducing die end is compatible with the specification of the upper plugging head and the lower plugging head end; The shape of the reducing die is convenient for extruding a workpiece having thin ends and a thick middle inside the die.

[0010] As a preferred solution of the bidirectional reducing die with an automatic ejection structure of the present invention, a bottom plate is fixedly installed at the bottom of the lower die seat, a top plate is fixedly installed at the top of the upper die seat, the left side of the bottom plate and the top plate are connected by a main hydraulic cylinder group, and a suction assembly is provided between the top plate and the right side of the bottom plate; Among them, the setting of the main hydraulic cylinder group can be adjusted up and down to facilitate subsequent extrusion molding.

[0011] As a preferred solution of the bidirectional reducing die with automatic ejection structure of the present invention, the bottom of the lower die seat and the top of the upper die seat are fixedly installed with supports, the inner sides of the upper two groups of supports are respectively fixedly installed with an upper hydraulic cylinder group and a lower hydraulic cylinder group, and the outer ends of the output shafts of the upper hydraulic cylinder group and the lower hydraulic cylinder group are respectively fixedly connected with an upper ejector rod and a lower ejector rod; Among them, the arrangement of the lower hydraulic cylinder group and the upper hydraulic cylinder group can provide driving force to the upper ejector rod and the lower ejector rod to ensure the extrusion molding effect.

[0012] As a preferred solution of the bidirectional reducing die with an automatic ejection structure of the present invention, the main body of the suction component is a driving motor fixedly mounted on the top of the bottom plate, the top end of the output shaft of the driving motor is fixedly connected to an electric cylinder group, the top end of the output shaft of the electric cylinder group is fixedly connected to a rotating frame, and the outer end of the rotating frame is fixedly welded with a magnetic suction block located on the outer wall side of the reducing die; Among them, the setting of the driving motor is convenient for rotating the rotating frame and the magnetic suction block and the reducing die on its outer side, while the setting of the electric cylinder group can adjust its height accordingly.

[0013] As a preferred solution of the bidirectional reducing die with automatic ejection structure of the present invention, a suction assembly is fixedly connected to the top of the rotating frame, and the top end of the suction assembly is movably sleeved in the sleeve hole on the top plate; Among them, the sleeve rod can ensure the stability of the upper mold seat when it moves up and down.

[0014] The present invention provides a bidirectional reducing die with an automatic ejection structure. It has the following beneficial effects: 1. The bidirectional reducing die with automatic ejection structure is provided with the lower rectangular spring and the upper rectangular spring inside the lower die seat and the upper die seat. During extrusion molding, the lower rectangular spring and the upper rectangular spring are both in a compressed state. When demolding, the upper die seat moves upward, and the lower rectangular spring inside the lower die seat is reset by its own elastic force, and the lower plugging head on the top side and the reducing die are simultaneously squeezed upward to achieve the effect of automatic ejection, which solves the problem that the existing device still needs hydraulic drive demolding steps and complicated operations after extrusion molding; 2. The bidirectional reducing die with automatic ejection structure can shorten the process cycle and reduce the operation steps by setting the lower rectangular spring and the upper rectangular spring. At the same time, the spring directly resets the ejection reducing die and the inner workpiece, which has high working efficiency. 3. The bidirectional reducing die with automatic ejection structure can adjust the height through the setting of the main hydraulic cylinder group, and the lower hydraulic cylinder group and the upper hydraulic cylinder group perform bidirectional extrusion molding on the inner material from both the top and bottom sides, and the setting of each structure in the suction component can adjust the position of the rotating frame, and the magnetic suction block can adsorb and place the reducing die, so as to achieve the effect of automatic loading and unloading, with a high degree of automation and high extrusion molding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the hydraulic cylinder group of the present invention; Figure 3 It is a structural schematic diagram of the material suction assembly of the present invention; Figure 4 It is a schematic diagram of the structure of the upper and lower mold bases of the present invention; Figure 5 It is a schematic diagram of the structure of the inner side of the lower mold seat of the present invention; Figure 6 It is a schematic structural diagram of the inner side of the upper mold seat of the present invention.

[0016] In the figure: 1. lower die seat; 11. lower spring groove; 12. lower sealing groove; 13. lower die groove; 14. lower ejector rod; 15. lower rectangular spring; 16. lower sealing head; 17. slot; 2. upper die seat; 21. upper spring groove; 22. upper sealing groove; 23. upper die groove; 24. upper ejector rod; 25. upper rectangular spring; 26. upper sealing head; 3. reducing die; 4. main hydraulic cylinder group; 5. support; 6. lower hydraulic cylinder group; 7. upper hydraulic cylinder group; 8. bottom plate; 9. ejector plate; 91. sleeve hole; 10. suction assembly; 101. drive motor; 102. electric cylinder group; 103. rotating frame; 104. magnetic suction block; 105. sleeve rod. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-6The embodiment of the present invention provides a technical solution: a bidirectional reducing die with an automatic ejection structure, comprising a lower die seat 1 and an upper die seat 2 on its top side, and a reducing die 3 is clamped between the lower die seat 1 and the upper die seat 2; a lower spring groove 11, a lower sealing groove 12 and a lower die groove 13 are arranged on the inner side of the lower die seat 1 from bottom to top, a lower ejector rod 14 is slidably sleeved in the bottom of the lower spring groove 11 in the lower die seat 1, a lower rectangular spring 15 is fixedly connected to the top of the lower ejector rod 14, and a lower sealing head 16 is arranged on the top of the lower rectangular spring 15; an upper spring groove 21, an upper sealing groove 22 and an upper die groove 23 are arranged on the inner side of the upper die seat 2 from top to bottom, an upper ejector rod 24 is slidably sleeved on the top side of the upper die seat 2, an upper rectangular spring 25 is fixedly connected to the bottom end of the upper ejector rod 24, and an upper sealing head 26 is arranged on the bottom end of the upper rectangular spring 25, and a reducing die 3 is placed between the upper die groove 23 and the lower die groove 13; Among them, the bidirectional reducing die with automatic ejection structure is provided with the lower rectangular spring 15 and the upper rectangular spring 25 on the inner side of the lower mold seat 1 and the upper mold seat 2. During extrusion molding, the lower rectangular spring 15 and the upper rectangular spring 25 are both in a compressed state. When demolding, the upper mold seat 2 moves up and the lower rectangular spring 15 on the inner side of the lower mold seat 1 is reset by its own elastic force, and the lower plugging head 16 on its top side and the reducing die 3 are squeezed upward to achieve the effect of automatic ejection, which solves the problem that the existing device still needs hydraulic drive to demold after extrusion molding, which has many cumbersome operations. Example 1

[0019] A disc seat is provided at the bottom of the lower mold seat 1 and the top of the upper mold seat 2, and a rod groove for setting the sliding sleeve lower ejector rod 14 and the upper ejector rod 24 is opened in the disc seat; wherein, the setting of the rod groove facilitates the lower ejector rod 14 and the upper ejector rod 24 to move up and down therein, thereby achieving the effect of efficiently squeezing the lower rectangular spring 15 and the upper rectangular spring 25 on the outside thereof, and at the same time, the extremely heavy load rectangular spring 15 and the upper rectangular spring 25 of φ50 and length 150 are selected and compressed to a length of 120, which can provide a compression preload of about 1t.

[0020] The lower sealing groove 12 and the upper sealing groove 22 are both wedge-shaped grooves, and the material located on the inner side of the reducing die 3 is pressed between the lower sealing head 16 and the upper sealing head 26, and the lower sealing head 16 and the upper sealing head 26 are both wedge-shaped heads; wherein, the wedge-shaped setting facilitates the lower sealing head 16 and the upper sealing head 26 to move up and down therein, thereby achieving the effect of corresponding extrusion and molding of the material in the reducing die 3.

[0021] The top of the lower mold base 1 is provided with a slot 17 located outside the lower mold groove 13, and the specifications of the slot 17 are adapted to the specifications of the outer side of the bottom end of the upper mold base 2; wherein, the setting of the slot 17 can ensure the stability of the upper mold base when it is pressed down.

[0022] The reducing die 3 is a die tube with a thick middle and thin ends, and the specifications of the ends of the reducing die 3 are compatible with the specifications of the ends of the upper plugging head 26 and the lower plugging head 16; wherein, the shape of the reducing die 3 is convenient for extruding a workpiece with thin ends and a thick middle inside it.

[0023] Among them, the bidirectional reducing die with automatic ejection structure can shorten the process cycle and reduce the operation steps by setting the lower rectangular spring 25 and the upper rectangular spring 15. At the same time, the spring directly resets the ejection reducing die 3 and the inner workpiece thereof, which has high working efficiency. Example 2

[0024] A bottom plate 8 is fixedly installed at the bottom of the lower mold base 1, and a top plate 9 is fixedly installed at the top of the upper mold base 2. The left sides of the bottom plate 8 and the top plate 9 are connected through a main hydraulic cylinder group 4, and a suction assembly 10 is arranged between the right sides of the top plate 9 and the bottom plate 8; wherein, the main hydraulic cylinder group 4 can be adjusted up and down 2, so as to facilitate subsequent extrusion molding.

[0025] The bottom of the lower mold base 1 and the top of the upper mold base 2 are both fixedly installed with supports 5, and the inner sides of the upper two groups of supports 5 are respectively fixedly installed with upper hydraulic cylinder groups 7 and lower hydraulic cylinder groups 6, and the outer ends of the output shafts of the upper hydraulic cylinder groups 7 and the lower hydraulic cylinder groups 6 are respectively fixedly connected with upper push rods 24 and lower push rods 14; wherein, the setting of the lower hydraulic cylinder group 6 and the upper hydraulic cylinder group 7 can provide driving force to the upper push rod 24 and the lower push rod 14 to ensure the extrusion molding effect.

[0026] The main body of the suction component 10 is a driving motor 101 fixedly installed on the top of the base plate 8, and the top end of the output shaft of the driving motor 101 is fixedly connected to the electric cylinder group 102, and the top end of the output shaft of the electric cylinder group 102 is fixedly connected to the rotating frame 103, and the outer end of the rotating frame 103 is fixedly welded with a magnetic suction block 104 located on the outer wall side of the reducing die 3; wherein, the setting of the driving motor 101 facilitates the rotation of the rotating frame 103 and the magnetic suction block 104 and the reducing die 3 on its outer side, and the setting of the electric cylinder group 102 can adjust its height accordingly.

[0027] The top of the rotating frame 103 is fixedly connected with the material suction assembly 10, and the top end of the material suction assembly 10 is movably sleeved in the sleeve hole 91 on the top plate 9; wherein, the sleeve rod 105 can ensure the stability of the upper mold seat 2 when it moves up and down.

[0028] The bidirectional reducing die with automatic ejection structure can adjust the height of 2 through the setting of the main hydraulic cylinder group 4, and the lower hydraulic cylinder group 6 and the upper hydraulic cylinder group 7 perform bidirectional extrusion molding on the material inside 3 from both the top and bottom sides, and the setting of each structure in the suction component 10 can adjust the position of the rotating frame 103, and the magnetic suction block 104 adsorbs and places the reducing die 3, thereby achieving the effect of automatic loading and unloading, with a high degree of automation and high extrusion molding efficiency.

[0029] The working principle and use process of the present invention are as follows: when the device is needed to work and material is loaded, the driving motor 101 in the suction component 10 cooperates with the electric cylinder group 102 to adjust the position of the rotating frame 103, and the magnetic suction block 104 thereon is used to adsorb the reducing die and place it in the lower mold seat 1, and then the lower ejector rod 14 in the lower mold seat 1 is used to squeeze the lower rectangular spring 15 upward and compress it, and then squeeze the lower plugging head 16 to push the material inside the reducing die 3 upward, and at the same time, the upper ejector rod 24 on the inner side of the upper mold seat 2 squeezes the upper plugging head 26 downward to extrude the material inside the reducing die 3 from the top side to achieve the extrusion molding effect. After the extrusion is completed, the upper mold seat 2 is moved upward. At this time, the lower rectangular spring 15 on the inner side of the lower mold seat 1 uses its own elastic force to push the reducing die 3 upward, thereby achieving the effect of automatically ejecting the reducing die 3 and the workpiece inside the reducing die 3, and then the driving motor 101 and the electric cylinder group 102 in the suction component 10 cooperate to adsorb the ejected reducing die 3, and the degree of automation is relatively high.

[0030] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A bidirectional reducing die with an automatic ejection structure, comprising a lower die seat (1) and an upper die seat (2) on its top side, wherein a reducing die (3) is clamped between the lower die seat (1) and the upper die seat (2); The inner side of the lower mold seat (1) is provided with a lower spring groove (11), a lower sealing groove (12) and a lower mold groove (13) from bottom to top, a lower ejector rod (14) is slidably sleeved in the bottom of the lower spring groove (11) in the lower mold seat (1), a lower rectangular spring (15) is fixedly connected to the top of the lower ejector rod (14), and a lower sealing head (16) is provided at the top of the lower rectangular spring (15); An upper spring groove (21), an upper sealing groove (22) and an upper die groove (23) are arranged on the inner side of the upper die seat (2) from top to bottom; an upper ejector rod (24) is slidably sleeved on the top side of the upper die seat (2); an upper rectangular spring (25) is fixedly connected to the bottom end of the upper ejector rod (24); an upper sealing head (26) is arranged at the bottom end of the upper rectangular spring (25); and a reducing die (3) is placed between the upper die groove (23) and the lower die groove (13).

2. A bidirectional reducing die with an automatic ejection structure according to claim 1, characterized in that: A disc seat is provided at the bottom of the lower mold seat (1) and the top of the upper mold seat (2), and a rod groove for slidably fitting a lower ejector rod (14) and an upper ejector rod (24) is provided in the disc seat.

3. The bidirectional reducing die with automatic ejection structure according to claim 1, characterized in that: The lower sealing groove (12) and the upper sealing groove (22) are both wedge-shaped grooves, and material located inside the diameter reducing die (3) is pressed between the lower sealing head (16) and the upper sealing head (26), and the lower sealing head (16) and the upper sealing head (26) are both wedge-shaped heads.

4. The bidirectional reducing die with automatic ejection structure according to claim 1, characterized in that: The top of the lower mold base (1) is provided with a clamping groove (17) located outside the lower mold groove (13), and the specifications of the clamping groove (17) are compatible with the specifications of the outer side of the bottom end of the upper mold base (2).

5. The bidirectional reducing die with automatic ejection structure according to claim 1, characterized in that: The reducing die (3) is a die tube that is thick in the middle and thin at both ends, and the specifications of the ends of the reducing die (3) are compatible with the specifications of the ends of the upper plugging head (26) and the lower plugging head (16).

6. The bidirectional reducing die with automatic ejection structure according to claim 1, characterized in that: A bottom plate (8) is fixedly mounted on the bottom of the lower mold base (1), and a top plate (9) is fixedly mounted on the top of the upper mold base (2); the left sides of the bottom plate (8) and the top plate (9) are connected via a main hydraulic cylinder group (4), and a material suction assembly (10) is provided between the right sides of the top plate (9) and the bottom plate (8).

7. The bidirectional reducing die with automatic ejection structure according to claim 8, characterized in that: The bottom of the lower mold base (1) and the top of the upper mold base (2) are both fixedly mounted with supports (5), the inner sides of the upper two groups of supports (5) are respectively fixedly mounted with an upper hydraulic cylinder group (7) and a lower hydraulic cylinder group (6), and the outer ends of the output shafts of the upper hydraulic cylinder group (7) and the lower hydraulic cylinder group (6) are respectively fixedly connected with an upper push rod (24) and a lower push rod (14).

8. The bidirectional reducing die with automatic ejection structure according to claim 6, characterized in that: The main body of the material suction component (10) is a driving motor (101) fixedly mounted on the top of the bottom plate (8); the top end of the output shaft of the driving motor (101) is fixedly connected to an electric cylinder group (102); the top end of the output shaft of the electric cylinder group (102) is fixedly connected to a rotating frame (103); and the outer end of the rotating frame (103) is fixedly welded with a magnetic suction block (104) located on the outer wall side of the reducing die (3).

9. The bidirectional reducing die with automatic ejection structure according to claim 8, characterized in that: The top of the rotating frame (103) is fixedly connected to a material suction assembly (10), and the top end of the material suction assembly (10) is movably sleeved in a sleeve hole (91) on the top plate (9).

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