Small-radius bent pipe extruding and shaping mechanism

Abstract

The utility model relates to the technical field of bent pipe shaping, in particular to a small-radius bent pipe extruding and shaping mechanism. The small-radius bent pipe extruding and shaping mechanism comprises a fixedly arranged upper shaping die and a lower shaping die used for being matched with the upper shaping die, and further comprises a lower die base, a mounting cavity is formed in the lower die base, a guide hole is formed in the top of the mounting cavity, a lower die sliding seat is arranged at the guide hole in a sliding mode, and the lower shaping die is mounted at the end, close to the upper shaping die, of the lower die sliding seat. A matching hole is formed in the side wall of the lower die base in a penetrating mode, a driving oil cylinder is arranged on one side of the lower die sliding base and provided with a piston rod, a cushion block is arranged at the end of the piston rod, and die lifting guide plates are fixedly arranged on the two sides of the cushion block and used for being matched with the lower die sliding base. According to the utility model, the die lifting guide plate is arranged, so that the cost is better saved, and the risk that the lower sizing die falls off due to the failure of the lifting oil cylinder is reduced, so that the safety is higher.

Description

Technical Field

[0001] This utility model relates to the field of pipe bending and shaping technology, specifically to a small-radius pipe bending extrusion and shaping mechanism. Background Technology

[0002] With the continuous development of modern industrial technology, the requirements for space utilization of equipment are gradually increasing. Therefore, more small-radius pipe bends are needed. As a result, small-radius extrusion finishing machines are widely used in the automotive, shipbuilding and other fields. They are a type of equipment that further extrudes and shapes bent pipes to reduce their radius.

[0003] The small radius pipe bending extrusion shaping mechanism is a mechanism used to lift the shaping die. It shapes the extruded pipe by lifting and lowering the shaping die, thereby achieving a better pipe shape. The existing small radius pipe bending extrusion shaping mechanism generally consists of two parts: a pad block translation cylinder and a lifting cylinder. When the lifting cylinder is damaged, the lower shaping die is prone to fall, which poses a significant safety hazard. Utility Model Content

[0004] This invention provides a small-radius bending tube extrusion and shaping mechanism, which can overcome some or all of the defects of the prior art.

[0005] The small-radius bending tube extrusion and shaping mechanism of this utility model includes a fixedly installed upper shaping die and a lower shaping die for cooperating with the upper shaping die. It also includes a lower die base, a mounting cavity is formed in the lower die base, a guide hole is formed at the top of the mounting cavity, a lower die slide is slidably provided at the guide hole, the lower shaping die is installed at the end of the lower die slide near the upper shaping die, a mating hole is formed through the side wall of the lower die base, a driving cylinder is provided on one side of the lower die slide, the driving cylinder has a piston rod, a pad is provided at the end of the piston rod, and lifting guide plates are fixed on both sides of the pad for cooperating with the lower die slide.

[0006] Preferably, the lifting guide plate forms a mating surface near the lower mold slide, and the mating surface forms a first stop surface, a lifting surface, and a second stop surface in sequence along the piston rod thrust direction, with the height of the first stop surface being higher than that of the second stop surface.

[0007] Preferably, the lower mold slide forms a mating shaft on the side near the pad block, and two rollers are provided on the side wall of the mating shaft near the end of the pad block. The two rollers are used to roll and engage with the mating surfaces at the lifting mold guide plates on both sides of the pad block.

[0008] Preferably, a connecting seat is formed at the end of the lower mold slide near the upper forming mold, and the connecting seat is used to detachably engage with the lower forming mold.

[0009] Preferably, the top of the pad has a first support surface and a second support surface formed sequentially along the piston rod thrust direction, with the height of the first support surface being higher than that of the second support surface.

[0010] Preferably, the lower mold base is provided with a slide on the side near the drive cylinder, and the side of the slide away from the lower mold base forms a mounting surface, with the drive cylinder fixedly engaged with the mounting surface.

[0011] Preferably, the piston rod end is provided with a fixed joint, which is fixedly engaged with the piston rod and the pad block respectively.

[0012] Preferably, the upper forming mold has an upper mold connecting block at the end away from the lower forming mold, and the upper mold connecting block is detachably connected to the upper forming mold.

[0013] Beneficial effects: By setting up a lifting guide plate, there is no need to set up a lifting cylinder at the pad block, which saves costs and reduces the risk of the lower forming mold falling due to the failure of the lifting cylinder, thus providing higher safety.

[0014] Furthermore, the first support surface and the second support surface are used to support the lower mold base when it is at its highest position and the lower mold base is at its lowest position, respectively, so that the lower forming mold and the upper forming mold are more stable when they are in contact, thereby improving the forming quality of the bent pipe. Attached Figure Description

[0015] Figure 1 Axonometric schematic diagram of a small-radius pipe bending extrusion and shaping mechanism;

[0016] Figure 2 Schematic diagram of an explosion-proof mechanism for a small-radius bent pipe extrusion and shaping device;

[0017] Figure 3 A schematic diagram of the lifting mold guide plate from an isometric perspective;

[0018] Figure 4 This is an isometric schematic diagram of the lower mold slide.

[0019] Figure 5 This is an isometric schematic diagram of the pad block;

[0020] Figure 6 This is a left-side schematic diagram of a small-radius pipe bending and forming mechanism.

[0021] Figure 7 for Figure 6 Schematic diagram of sectional view AA. Detailed Implementation

[0022] To further understand the content of this utility model, a detailed description of the utility model is provided in conjunction with the embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the utility model.

[0023] Example 1

[0024] Seen in Figure 1-2This embodiment provides a small radius bending tube extrusion and shaping mechanism, which includes an upper shaping mold 101 fixedly disposed and a lower shaping mold 102 for cooperating with the upper shaping mold 101. It also includes a lower mold base 110, a mounting cavity 111 formed in the lower mold base 110, a guide hole 212 formed at the top of the mounting cavity 111, a lower mold slide 220 slidably disposed at the guide hole 212, the lower shaping mold 102 is mounted on the lower mold slide 220 near the end of the upper shaping mold 101, a mating hole 213 is formed through the side wall of the lower mold base 110, a driving cylinder 230 is provided on one side of the lower mold slide 220, the driving cylinder 230 has a piston rod 231, a pad 240 is provided at the end of the piston rod 231, and lifting mold guide plates 250 are fixedly disposed on both sides of the pad 240. The lifting mold guide plates 250 are used to cooperate with the lower mold slide 220.

[0025] According to the solution provided in this embodiment, the driving cylinder 230 can drive the piston rod 231 to move axially, thereby driving the lifting guide plate 250 at the pad block 240 to move, so as to realize the lifting and lowering of the lower die base 110. The lower die base 110 drives the lower forming die 102 to cooperate and separate from the upper forming die 101, so as to realize the forming operation of the extruded bent tube.

[0026] In this embodiment, by setting up the lifting guide plate 250, it is not necessary to set up the lifting cylinder at the pad block 240, thereby saving costs and reducing the risk of the lower forming mold 102 falling due to the failure of the lifting cylinder, thus having higher safety.

[0027] Seen in Figure 2-3 The lifting mold guide plate 250 forms a mating surface 251 near the lower mold slide 220. The mating surface 251 forms a first stop surface 3511, a lifting surface 3512, and a second stop surface 3513 in sequence along the thrust direction of the piston rod 231. The height of the first stop surface 3511 is higher than that of the second stop surface 3513.

[0028] Among them, the lower mold slide 220 forms a mating shaft 421 on the side near the pad block 240. Two rollers 422 are provided on the side wall of the mating shaft 421 near the end of the pad block 240. The two rollers 422 are used to roll and engage with the mating surfaces 251 of the lifting mold guide plates 250 on both sides of the pad block 240.

[0029] In use, the two rollers 422 respectively engage with the mating surfaces 251 of the two lifting mold guide plates 250. When the rollers 422 are at the first stop surface 3511, the lower mold base 110 is at its highest position, and the lower forming mold 102 is separated from the upper forming mold 101. When the rollers 422 are at the second stop surface 3513, the lower mold base 110 is at its lowest position, and the lower forming mold 102 engages with the upper forming mold 101.

[0030] Seen in Figure 1-4 The lower mold slide 220 forms a connecting seat 423 near the upper forming mold 101. The connecting seat 423 is used to detachably engage with the lower forming mold 102, thereby facilitating the replacement of the lower forming mold 102.

[0031] Furthermore, a first support surface 541 and a second support surface 542 are formed sequentially on the top of the pad 240 along the thrust direction of the piston rod 231, with the height of the first support surface 541 being higher than that of the second support surface 542.

[0032] Specifically, the first support surface 541 and the second support surface 542 are used to support the lower mold base 110 when it is at its highest position and the lower mold base 110 is at its lowest position, respectively, so that the lower forming mold 102 and the upper forming mold 101 are more stable when they are in contact, thereby improving the forming quality of the bent pipe.

[0033] Seen in Figure 6-7 The lower mold base 110 is provided with a slide 260 on the side near the drive cylinder 230, and the slide 260 forms a mounting surface 661 on the side away from the lower mold base 110. The drive cylinder 230 is fixedly engaged with the mounting surface 661.

[0034] Furthermore, the piston rod 231 is provided with a fixed joint 770 at its end, which is fixedly engaged with the piston rod 231 and the pad 240 respectively.

[0035] In this embodiment, an upper mold connecting block 2011 is provided at the end of the upper shaping mold 101 away from the lower shaping mold 102. The upper mold connecting block 2011 is detachably connected to the upper shaping mold 101, thereby facilitating the replacement of the upper shaping mold 101.

[0036] Working principle: First, when the lower forming mold 102 separates from the upper forming mold 101, the bent tube is placed at the lower forming mold 102. Then, the driving cylinder 230 drives the piston rod 231 to extend out of the driving cylinder 230, so that the roller 422 rises from the second mating surface 251 to the first mating surface 251. At this time, the lower forming mold 102 and the upper forming mold 101 abut against each other, so that the bent tube can be better squeezed and shaped by the upper forming mold 101 and the lower forming mold 102 to obtain the shaped bent tube.

[0037] Furthermore, when the driving cylinder 230 drives the piston rod 231 to retract, the roller 422 is lowered from the first mating surface 251 to the second mating surface 251, at which point the lower forming mold 102 separates from the upper forming mold 101.

[0038] It is readily understood that those skilled in the art can combine, split, or reorganize the embodiments provided in this application to obtain other embodiments, all of which do not exceed the protection scope of this application.

[0039] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the embodiments shown are only part of the embodiments of the present invention. The actual structure is not limited to this. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A small-radius tube bending extrusion and shaping mechanism, comprising a fixedly arranged upper shaping die (101) and a lower shaping die (102) for cooperating with the upper shaping die (101), characterized in that, It also includes a lower mold base (110), a mounting cavity (111) is formed inside the lower mold base (110), a guide hole (212) is formed at the top of the mounting cavity (111), a lower mold slide (220) is slidably provided at the guide hole (212), a lower forming mold (102) is installed on the lower mold slide (220) near the end of the upper forming mold (101), a mating hole (213) is formed through the side wall of the lower mold base (110), a driving cylinder (230) is provided on one side of the lower mold slide (220), the driving cylinder (230) has a piston rod (231), a pad (240) is provided at the end of the piston rod (231), and a lifting mold guide plate (250) is fixed on both sides of the pad (240), the lifting mold guide plate (250) is used to cooperate with the lower mold slide (220).

2. The small-radius bending tube extrusion and shaping mechanism according to claim 1, characterized in that, The lifting mold guide plate (250) forms a mating surface (251) at one end near the lower mold slide (220). The mating surface (251) forms a first stop surface (3511), a lifting surface (3512), and a second stop surface (3513) in sequence along the thrust direction of the piston rod (231). The height of the first stop surface (3511) is higher than that of the second stop surface (3513).

3. The small-radius bending tube extrusion and shaping mechanism according to claim 2, characterized in that, The lower mold slide (220) forms a mating shaft (421) on the side near the pad (240). Two rollers (422) are provided on the side wall of the mating shaft (421) near the end of the pad (240). The two rollers (422) are used to roll and engage with the mating surfaces (251) of the lifting mold guide plates (250) on both sides of the pad (240).

4. The small-radius bending tube extrusion and shaping mechanism according to claim 1, characterized in that, The lower mold slide (220) forms a connecting seat (423) near the upper forming mold (101), and the connecting seat (423) is used to detachably engage with the lower forming mold (102).

5. The small-radius bending tube extrusion and shaping mechanism according to claim 1, characterized in that, The top of the pad (240) forms a first support surface (541) and a second support surface (542) in sequence along the thrust direction of the piston rod (231), with the height of the first support surface (541) being higher than that of the second support surface (542).

6. The small-radius bending tube extrusion and shaping mechanism according to claim 1, characterized in that, The lower mold base (110) is provided with a slide (260) on the side near the drive cylinder (230). The slide (260) forms a mounting surface (661) on the side away from the lower mold base (110). The drive cylinder (230) is fixedly engaged with the mounting surface (661).

7. The small-radius tube bending extrusion and shaping mechanism according to claim 1, characterized in that, The piston rod (231) is provided with a fixed joint (770) at the end, and the fixed joint (770) is fixedly engaged with the piston rod (231) and the pad (240) respectively.

8. The small-radius tube bending extrusion and shaping mechanism according to claim 1, characterized in that, The upper shaping mold (101) is provided with an upper mold connecting block (2011) at the end away from the lower shaping mold (102), and the upper mold connecting block (2011) and the upper shaping mold (101) are detachably connected.

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