Reverse extruding machine

Abstract

The utility model discloses a reverse extruding machine which comprises a rack, a front beam, an ingot containing barrel and an extruding beam, the front beam, the ingot containing barrel and the extruding beam are sequentially arranged on the rack, the ingot containing barrel is connected to the rack in a sliding mode, an extruding die shaft is arranged on the side, close to the ingot containing barrel, of the front beam, and an extruding plug is arranged on the side, close to the ingot containing barrel, of the extruding beam; and the upsetting structure is movably arranged on the rack and can be mounted on one side, close to the ingot containing barrel, of the extrusion die shaft. The upsetting structure has the beneficial effects that the upsetting structure is arranged on the extrusion die shaft before upsetting, the upsetting structure enters the ingot containing barrel to be in contact with a metal bar during upsetting, so that the metal bar cannot enter the extrusion die during upsetting, and the utilization rate of the metal bar is favorably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal extrusion technical field, especially a kind of reverse extruding press. BACKGROUND

[0002] Metal extruding press is the commonly used equipment of production metal profile. One of metal extruding press is reverse extruding press. In the production of metal profile, first, metal bar stock is placed in the ingot cylinder, then the metal bar stock in the ingot cylinder is upset, and finally the metal bar stock is extruded into metal profile.

[0003] In the existing reverse single-action extruding press, generally, extruding plug and die arranged on extruding die shaft are used to extrude metal bar stock from both ends of metal bar stock to complete upsetting of metal bar stock in the ingot cylinder. However, this form of processing may cause part of metal material to enter the die during upsetting, and this part of metal material is not fully extruded and upset, so that the produced metal profile does not meet the quality requirements, resulting in low material utilization rate of metal bar stock. SUMMARY

[0004] The main purpose of the utility model is to provide a kind of reverse extruding press, to solve the technical problem of low material utilization rate of metal bar stock in the prior art.

[0005] To achieve the above purpose, the utility model provides a kind of reverse extruding press, which comprises a rack and a front beam, an ingot cylinder and an extruding beam arranged on the rack in sequence, the ingot cylinder is slidably connected to the rack, the side of the front beam close to the ingot cylinder is provided with an extruding die shaft, and the side of the extruding beam close to the ingot cylinder is provided with an extruding plug; it further comprises an upsetting structure movably arranged on the rack, and the upsetting structure can be installed on the side of the extruding die shaft close to the ingot cylinder.

[0006] The utility model has the beneficial effects that: before upsetting, the upsetting structure is installed on the extruding die shaft, and the upsetting structure enters the ingot cylinder and contacts with the metal bar stock during upsetting, so that the metal bar stock will not enter the extruding die, which is beneficial to improve the utilization rate of metal bar stock.

[0007] Preferably, the reverse extruding press further comprises an upsetting structure driving device, the upsetting structure driving device is arranged on the rack and corresponds to the position of the extruding die shaft, and the upsetting structure driving device is used to install the upsetting structure on the end of the extruding die shaft close to the ingot cylinder, which is beneficial to improve the dismounting speed of the upsetting structure and improve the profile production efficiency.

[0008] Preferably, the upsetting structure driving device is arranged on the lower side of the extruding die shaft, which is beneficial to improve safety and fully utilize the internal space of the reverse extruding press.

[0009] Preferably, the extrusion die shaft has longitudinally extending mounting grooves on both sides. When installing the upsetting structure, the upsetting structure is locked in the two mounting grooves to restrict the axial movement of the upsetting structure along the extrusion die shaft. This helps to maintain the positional stability of the upsetting structure and the extrusion die shaft during upsetting and ensures the normal progress of upsetting.

[0010] Preferably, the piercing structure includes a piercing rod and an expansion extruder. The expansion extruder is located on the side of the piercing rod close to the extrusion beam, which helps to improve the quality of the extruded metal profile.

[0011] Preferably, the reverse extrusion press further includes a main cylinder and a piercing device. The main cylinder is mounted on the frame, and the extrusion beam is located at the output end of the main cylinder. The piercing device includes a piercing drive device and a piercing rod that are connected by a transmission. The piercing drive device is located inside the main cylinder and is used to drive the piercing rod through the extrusion beam and the extrusion plug, and to pierce the metal bar in the ingot container.

[0012] Preferably, the reverse extrusion press further includes a piercing baffle and a baffle driving device connected by a transmission. The baffle driving device is located on the billet cylinder, and the piercing baffle corresponds to the opening position of the billet cylinder near the front beam. During piercing, the baffle driving device drives the piercing baffle to move and block the opening of the billet cylinder near the front beam, so that part of the metal bar material extruded by the piercing rod during piercing is squeezed into the cavity between the piercing baffle in the inner hole of the billet cylinder and the uptaked metal bar material body, avoiding material waste and helping to further improve material utilization.

[0013] Preferably, the reverse extrusion press further includes a shearing device, which includes a shearing blade and a shearing drive device connected by a transmission. The shearing drive device is located on the billet cylinder. After extrusion, the shearing drive device drives the shearing blade to approach the billet cylinder and cuts off the excess material of the metal bar that protrudes from the billet cylinder near the extrusion beam.

[0014] Preferably, the reverse extrusion press further includes a shearing positioning pad and a pad driving device connected by a transmission. The pad driving device is located on the frame and below the extrusion die shaft. Before shearing, the shearing positioning pad is sleeved on the extrusion die shaft. The billet cylinder presses the shearing positioning pad onto the front beam, so that the excess material of the metal bar protruding from the billet cylinder is located directly below the shearing blade, ensuring that the shearing blade can accurately cut off the excess material. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the reverse extrusion press during the roughing process in this embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the reverse extrusion machine during perforation in an embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of the reverse extruder during material cutting in an embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the pier structure in an embodiment of the present utility model;

[0020] Figure 5 This is a top view of the mold shaft and the pier structure being installed together in an embodiment of this utility model;

[0021] Figure 6 This is a front view of the mold shaft in an embodiment of the present invention;

[0022] Figure 7 for Figure 6 AA section view in the middle;

[0023] Figure 8 This is a schematic diagram of the pier structure and the pier structure driving device in the embodiment of this utility model.

[0024] In the attached diagram: 1-Frame, 2-Front beam, 3-Ingot holder, 4-Extrusion beam, 5-Extrusion die shaft, 51-Mounting groove, 6-Upsetting structure, 61-Upsetting seat, 611-Mounting block, 62-Expansion extruder head, 622-Expansion ring, 63-Upsetting rod, 7-Extrusion plug, 8-Piercing baffle, 9-Shearing device, 91-Shearing blade, 92-Shearing drive device, 10-Upsetting structure drive device, 20-Shearing positioning pad, 30-Main cylinder, 40-Piercing device, 401-Piercing drive device, 402-Piercing rod, 50-Extrusion die, 60-Metal bar stock, 70-Pipe stock.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] 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.

[0027] It should be noted that if the embodiments of this utility model involve directional indicators, such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0028] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] like Figures 1 to 8 As shown, a reverse extrusion press includes a frame 1 and a front beam 2, a billet cylinder 3, and an extrusion beam 4 arranged sequentially thereon. The billet cylinder 3 is slidably connected to the frame 1. An extrusion die shaft 5 is provided on the side of the front beam 2 near the billet cylinder 3, and an extrusion plug 7 is provided on the side of the extrusion beam 4 near the billet cylinder 3. It also includes a movably mounted overburdening structure 6 on the frame 1, which can be installed on the side of the extrusion die shaft 5 near the billet cylinder 3.

[0030] Before upsetting, the upsetting structure 6 is installed on the extrusion die shaft 5. During upsetting, the upsetting structure 6 enters the billet cylinder 3 and contacts the metal bar 60. The metal bar 60 will not enter the extrusion die 20 during upsetting, which helps to improve the utilization rate of the metal bar 60.

[0031] In some specific embodiments, reference is made to Figure 8 The reverse extrusion press also includes a roughing structure drive device 10, which is mounted on the frame 1 and corresponds to the position of the extrusion die shaft 5. The roughing structure drive device 10 is used to install the roughing structure 6 at one end of the extrusion die shaft 5 near the ingot cylinder 3.

[0032] The upsetting structure drive device 10 can install the upsetting structure 6 onto the end of the extrusion die shaft 5 near the billet cylinder 3 before upsetting begins, replacing manual installation. This helps to increase the installation speed of the upsetting structure 6 and improve the profile production efficiency.

[0033] Specifically, the drive device 10 for the piercing structure is a cylinder or a hydraulic cylinder, or it can be a structure consisting of a motor and a gear and rack.

[0034] In some specific embodiments, the upsetting structure drive device 10 is located on the lower side of the extrusion die shaft 5.

[0035] Positioning the upsetting structure drive device 10 below the extrusion die shaft 5 provides stable support for the upsetting structure 6, making it more stable during operation and reducing the risk of detachment or other accidents, thus improving safety. Furthermore, positioning the upsetting structure drive device 10 below the extrusion die shaft 5 allows for full utilization of the internal space of the reverse extruder, minimizing or avoiding an increase in its size and footprint, making the reverse extruder easier to transport and install.

[0036] In some other embodiments, the upsetting structure drive device 10 is located on the side or above the extrusion die shaft 5, as long as it can move the upsetting structure 6 and install it on the end of the extrusion die shaft 5 near the ingot cylinder 3.

[0037] In some specific embodiments, reference is made to Figures 5 to 7 The extrusion die shaft 5 has longitudinally extending mounting grooves 51 on both sides. When the upsetting structure 6 is installed, the upsetting structure 6 is locked in the two mounting grooves 51 to restrict the upsetting structure 6 from moving axially along the extrusion die shaft 5.

[0038] Specifically, the piercing structure 6 includes a piercing seat 61, on which a clearance groove is provided for avoiding the extrusion die shaft 5. Mounting blocks 611 are provided on both sides of the clearance groove.

[0039] Before upsetting, the upsetting structure drive device 10 drives the upsetting structure 6 to move towards the extrusion die shaft 5, placing the upsetting seat into the clearance groove. Two mounting blocks 611 are also respectively engaged in the two mounting grooves 51, thus axially limiting the extrusion die shaft 5 and the upsetting structure 6. Furthermore, the upsetting structure drive device 10 continuously supports the upsetting structure 6 during upsetting, which helps maintain the positional stability of the upsetting structure 6 and the extrusion die shaft 5 during upsetting, ensuring the normal operation of the upsetting process.

[0040] In some specific embodiments, reference is made to Figure 1 and Figure 4 The pier structure 6 includes a pier rod 63 and an expansion extrusion head 62, with the expansion extrusion head 62 located on the side of the pier rod 63 near the extrusion beam 4.

[0041] During the upsetting process, the extrusion beam 4 and the billet cylinder 3 move towards the front beam 2, causing the expansion extruder head 62 to gradually enter the billet cylinder 3 and perform extrusion upsetting. Air located between the inner wall of the billet cylinder 3 and the metal bar 60 is discharged from the billet cylinder 3 through the gap between the outer wall of the expansion ring 622 on the expansion extruder head 62 and the inner wall of the billet cylinder 3. As upsetting progresses, air is discharged from this gap, and simultaneously, the expansion ring 622 on the expansion extruder head 62 gradually expands outward, causing the gap to gradually narrow until it closes. This process facilitates sufficient upsetting of the metal bar 60, and, depending on product requirements, after upsetting and venting, the metal bar 60 can be pre-extruded to fully deform its metallographic structure, thus improving the quality of the extruded metal profile.

[0042] Specifically, the piercing seat 61, piercing rod 63, and expansion extrusion head 62 are arranged along the direction from the front beam 2 to the extrusion beam 4. During piercing, the expansion extrusion head 62 and part of the piercing rod 63 enter the ingot holding cylinder 3. The piercing rod 63 needs to be long enough so that the ingot holding cylinder 3 does not touch the piercing seat 61.

[0043] In some specific embodiments, reference is made to Figures 1 to 3 The reverse extrusion press also includes a main cylinder 30 and a piercing device 40. The main cylinder 30 is mounted on the frame 1, and the extrusion beam 4 is located at the output end of the main cylinder 30. The piercing device 40 includes a piercing drive device 401 and a piercing rod 402 connected by a transmission. The piercing drive device 401 is located inside the main cylinder 30. The piercing drive device 401 is used to drive the piercing rod 402 through the extrusion beam 4 and the extrusion plug 7, and to pierce the metal bar 60 in the ingot cylinder 3.

[0044] refer to Figure 2 The main cylinder 30 is used to drive the extrusion beam 4 and the extrusion plug 7 on it to move closer to the front beam 2. Both the extrusion beam 4 and the extrusion plug 7 are provided with corresponding through holes for the piercing rod 402 to pass through. When producing seamless tubes and other tube materials 70 using a reverse extrusion press, after the upsetting is completed, the piercing device 40 is needed to pierce the metal bar material 60 in the ingot cylinder 3.

[0045] In some specific embodiments, reference is made to Figures 1 to 3 The reverse extrusion press also includes a perforated baffle 8 and a baffle driving device connected by a transmission. The baffle driving device is located on the billet cylinder 3. The perforated baffle 8 corresponds to the opening position of the billet cylinder 3 near the front beam 2. During perforation, the baffle driving device drives the perforated baffle 8 to move and block the opening of the billet cylinder 3 near the front beam 2.

[0046] After the upsetting structure 6 upsets the metal bar 60 inside the ingot holder 3, a certain space is left between the body of the metal bar 60 and the opening on the side of the ingot holder 3 near the front beam 2 to accommodate the metal bar 60 that is extruded during piercing. (Reference) Figure 2Before piercing, the opening of the ingot container 3 near the front beam 2 is blocked by the piercing baffle 8. This can prevent the metal rod 60 squeezed out by the piercing rod 402 from falling out of the ingot container 3, thus avoiding material waste and improving material utilization.

[0047] The reverse extruder also includes a billet holder, with the billet cylinder 3 located on the billet holder and a baffle drive device located on the billet holder.

[0048] Further, refer to Figure 2 During piercing, an extrusion die 50 is installed at one end of the extrusion die shaft 5 near the ingot container 3. The extrusion die 50 presses the piercing baffle 8 against the ingot container 3 to ensure that the metal bar 60 cannot push the piercing baffle 8 open, and further ensures that the metal bar 60 cannot fall out of the ingot container 3.

[0049] In some specific embodiments, reference is made to Figures 1 to 3 The reverse extrusion press also includes a shearing device 9, which includes a shearing blade 91 and a shearing drive device 92 connected by a transmission. The shearing drive device 92 is located on the billet cylinder 3. After extrusion, the shearing drive device 92 drives the shearing blade 91 to approach the billet cylinder 3 and cuts off the excess material of the metal bar 60 that protrudes from the side of the billet cylinder 3 near the extrusion beam 4.

[0050] In some specific embodiments, reference is made to Figure 3 The reverse extrusion press also includes a shearing positioning pad 20 and a pad driving device connected by a transmission. The pad driving device is located on the frame 1 and below the extrusion die shaft 5. Before shearing, the shearing positioning pad 20 is sleeved on the extrusion die shaft 5, and the billet cylinder 3 presses the shearing positioning pad 20 onto the front beam 2.

[0051] Specifically, the pad block driving device is located on the ingot holding cylinder seat. The pad block driving device is a cylinder or a hydraulic cylinder, and the upper side of the shearing positioning pad block 20 has an opening. Before shearing, the pad block driving device drives the shearing positioning pad block 20 to move upward, so that the extrusion die shaft 5 passes through the opening, and the shearing positioning pad block 20 is fitted onto the extrusion die shaft 5. Then, the ingot holding cylinder 3 moves and presses the shearing positioning pad block 20 onto the front beam 2, which can position the side of the ingot holding cylinder 3 near the extrusion beam 4, so that the excess material of the metal bar 60 protruding from the ingot holding cylinder 3 is located directly below the shearing blade 91, ensuring that the shearing blade 91 can accurately cut off the excess material.

[0052] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A reverse extrusion press characterized by: It includes a rack (1) and front beam (2), ingot cylinder (3) and extrusion beam (4) arranged in sequence on it, the ingot cylinder (3) is connected to the rack (1) slidingly, the front beam (2) is provided with an extrusion die shaft (5) on the side close to the ingot cylinder (3), the extrusion beam (4) is provided with an extrusion plug (7) on the side close to the ingot cylinder (3); It also includes a roughening structure (6) movably arranged on the rack (1), the roughening structure (6) can be installed on the side of the extrusion die shaft (5) close to the ingot cylinder (3).

2. The reverse extruder of claim 1, wherein: It also includes a roughening structure driving device (10), which is arranged on the rack (1) and corresponds to the position of the extrusion die shaft (5), and is used to install the roughening structure (6) on the end of the extrusion die shaft (5) close to the ingot cylinder (3).

3. The reverse extruder of claim 2, wherein: The roughening structure driving device (10) is arranged on the lower side of the extrusion die shaft (5).

4. The reverse extruder of claim 3, wherein: Both sides of the extrusion die shaft (5) are provided with longitudinally extending installation grooves (51), when the roughening structure (6) is installed, the roughening structure (6) is clamped on the two installation grooves (51) to limit the axial movement of the roughening structure (6) along the extrusion die shaft (5).

5. The reverse extruder of claim 1, wherein: The roughening structure (6) includes a roughening rod (63) and an expansion plug (62), the expansion plug (62) is arranged on the side of the roughening rod (63) close to the extrusion beam (4).

6. The reverse extruder of claim 1, wherein: It also includes a main cylinder (30) and a piercing device (40), the main cylinder (30) is arranged on the rack (1), the extrusion beam (4) is arranged on the output end of the main cylinder (30), the piercing device (40) includes a transmission connection piercing driving device (401) and a piercing rod (402), the piercing driving device (401) is arranged in the main cylinder (30), and the piercing driving device (401) is used to drive the piercing rod (402) to pierce out of the extrusion beam (4) and the extrusion plug (7), and perform piercing on the metal bar stock (60) in the ingot cylinder (3).

7. The reverse extruder of claim 6, wherein: It also includes a transmission connection piercing baffle (8) and a baffle driving device, the baffle driving device is arranged on the ingot cylinder (3), the piercing baffle (8) corresponds to the opening position of the ingot cylinder (3) on the side close to the front beam (2), when piercing, the baffle driving device drives the piercing baffle (8) to move and block the opening of the ingot cylinder (3) on the side close to the front beam (2).

8. The reverse extruder of claim 1, wherein: It also includes a cutting device (9), the cutting device (9) includes a transmission connection cutting knife (91) and a cutting driving device (92), the cutting driving device (92) is arranged on the ingot cylinder (3), after extrusion, the cutting driving device (92) drives the cutting knife (91) to approach the ingot cylinder (3), and cuts off the excess material of the metal bar stock (60) protruding from the side of the ingot cylinder (3) close to the extrusion beam (4).

9. The reverse extruder of claim 8, wherein: Also included are transmission-connected shearing positioning pads (20) and pad driving devices, which are arranged on the frame (1) and located on the lower side of the extrusion die shaft (5). Before shearing, the shearing positioning pads (20) are sleeved on the extrusion die shaft (5), and the ingot containing cylinder (3) extrudes the shearing positioning pads (20) on the front beam (2).

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