Seamless extrusion forming equipment for seamless paper tube

Abstract

The utility model discloses seamless paper tube seamless extrusion forming equipment which comprises a lower die holder and an upper die holder, the top of the lower die holder is fixedly connected with a die core for extruding an inner cavity of a seamless paper tube, the upper die holder is arranged at the top of the lower die holder, the bottom of the upper die holder is provided with a die cavity corresponding to the die core, a first material returning assembly is arranged at the top of the lower die holder, and a second material returning assembly is arranged at the top of the lower die holder. And the first material returning assembly is used for returning the seamless paper tube outside the mold core, and the second material returning assembly is arranged in the upper mold base and used for returning the seamless paper tube in the mold cavity. According to the utility model, the lower die holder, the upper die holder, the first material returning assembly and the second material returning assembly are matched for use, when the upper die holder and the lower die holder are opened, the first material returning assembly can eject a paper tube on the die core for material returning, and the second material returning assembly can eject the paper tube out of the inner cavity of the upper die holder, so that the material returning of the paper tube is ensured, and the production efficiency is improved. And the condition that the paper tube is clamped in the mold is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to extrusion forming equipment field especially a kind of seamless paper tube seamless extrusion forming equipment. BACKGROUND

[0002] When seamless paper tube is extruded, mold is usually used to extrude seamless paper tube, and the mold is usually composed of upper mold and lower mold. The lower mold has a core that protrudes into the seamless paper tube. The bottom of the upper mold has a cavity that is recessed inward. Thus, the seamless paper tube is fitted outside the core, and the upper mold and the lower mold are closed to extrude the seamless paper tube, ensuring the tightness of the seamless paper tube.

[0003] Since the upper mold and the lower mold extrude the outside and the inside of the seamless paper tube respectively, when the upper mold and the lower mold are opened, the seamless paper tube is fitted outside the core or in the cavity of the upper mold. Thus, it is necessary to manually remove the seamless paper tube from the core or the cavity of the upper mold, which reduces the efficiency of the extrusion forming process of the seamless paper tube, and thus has certain defects. SUMMARY

[0004] The utility model aims to provide a seamless paper tube seamless extrusion forming equipment to solve the problems raised in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a seamless paper tube seamless extrusion forming equipment, comprising:

[0006] a lower mold seat, the top of which is fixedly connected with a core for extruding the inner cavity of the seamless paper tube;

[0007] an upper mold seat, which is arranged on the top of the lower mold seat, and the bottom of which is provided with a cavity corresponding to the core;

[0008] a first material removal assembly, which is arranged on the top of the lower mold seat and is used for removing the seamless paper tube outside the core;

[0009] a second material removal assembly, which is arranged inside the upper mold seat and is used for removing the seamless paper tube inside the cavity.

[0010] Preferably, the first material removal assembly comprises:

[0011] a top plate, which is arranged on the top of the lower mold seat, and the top of which is attached to the upper mold seat;

[0012] a through hole, which is arranged on the top of the top plate, and the inner cavity of which matches the bottom of the outer wall of the core.

[0013] Preferably, the first material returning assembly further comprises:

[0014] A mounting groove is arranged on the bottom of the lower die seat;

[0015] A supporting spring is slidingly sleeved on the inside of the mounting groove;

[0016] A connecting column is fixedly connected to the bottom of the top plate, and the outer wall of the connecting column is slidingly and penetratingly sleeved with the lower die seat;

[0017] A first limiting block is fixedly connected to the bottom of the connecting column, and the bottom of the first limiting block is in extrusion abutment with the supporting spring.

[0018] Preferably, the second material returning assembly comprises:

[0019] A top block is slidingly sleeved on the top of the inner cavity of the mold cavity;

[0020] A connecting groove is arranged on the top of the inner wall of the mold cavity;

[0021] A connecting plate is fixedly connected to the top of the side of the top block, and the connecting plate is slidingly arranged in the inside of the connecting groove.

[0022] Preferably, the second material returning assembly further comprises:

[0023] A connecting rod is fixedly connected to the bottom of the connecting plate, and the outer wall of the connecting rod is slidingly and penetratingly sleeved with the upper die seat;

[0024] A second limiting block is fixedly connected to the bottom of the connecting rod.

[0025] Preferably, the second material returning assembly further comprises:

[0026] A bearing groove is arranged on the bottom of the upper die seat, and the second limiting block is slidingly sleeved on the inside of the bearing groove;

[0027] A limiting spring is slidingly sleeved on the outside of the connecting rod, and the limiting spring is located on the top of the second limiting block.

[0028] The technical effects and advantages of the utility model are as follows:

[0029] The utility model discloses a lower die seat, upper die seat, first material returning assembly and second material returning assembly cooperation use mode, when the upper die seat and lower die seat open mould, the first material returning assembly can push out the paper tube on the mold core and return material, the second material returning assembly can push out the paper tube from the inner cavity of the upper die seat, thereby guaranteeing the paper tube and returning material, avoiding the situation that the paper tube is clamped in the mold. BRIEF DESCRIPTION OF DRAWINGS

[0030] Fig. 1 It is a whole structure schematic view of the utility model.

[0031] Fig. 2 It is a front internal structure schematic view of the utility model.

[0032] Fig. 3 It is a whole structure schematic view of the utility model top plate.

[0033] In the drawing: 1, lower die seat; 2, upper die seat; 3, first material withdrawal assembly; 31, top plate; 32, through hole; 33, mounting groove; 34, supporting spring; 35, connecting column; 36, first limiting block; 4, second material withdrawal assembly; 41, top block; 42, connecting plate; 43, connecting groove; 44, connecting rod; 45, second limiting block; 46, limiting spring; 5, die core. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0035] The utility model provides a kind of seamless paper tube seamless extrusion forming equipment as Figs. 1-3 Indicated in.

[0036] Embodiment 1

[0037] Including lower die seat 1, upper die seat 2, first material withdrawal assembly 3 and second material withdrawal assembly 4, the top of lower die seat 1 is fixedly connected with the die core 5 extruded to the inner cavity of seamless paper tube, upper die seat 2 is set on the top of lower die seat 1, the bottom of upper die seat 2 is provided with the die cavity corresponding with die core 5, so that when upper die seat 2 and lower die seat 1 are closed, the die cavity in the bottom of upper die seat 2 cooperates with die core 5 to can be extruded to seamless paper tube, as shown in Fig. 2 First material withdrawal assembly 3 is set on the top of lower die seat 1, first material withdrawal assembly 3 is used to withdraw material to the seamless paper tube outside die core 5, second material withdrawal assembly 4 is set in the inside of upper die seat 2, second material withdrawal assembly 4 is used to withdraw material to the seamless paper tube inside die cavity, i.e. after upper die seat 2 and lower die seat 1 are opened, seamless paper tube can be directly pushed out and pushed, to avoid the situation that seamless paper tube is blocked.

[0038] Further, the first material ejection assembly 3 comprises a top plate 31 and a through hole 32, the top plate 31 is arranged on the top of the lower die seat 1, the top of the top plate 31 is attached to the upper die seat 2, and the top of the top plate 31 and the top of the lower die seat 1 are both provided with a guide groove matched with the guide column at the bottom of the upper die seat 2, and the through hole 32 is arranged on the top of the top plate 31, the inner cavity of the through hole 32 is matched with the bottom of the outer wall of the mold core 5, that is, when the upper die seat 2 and the lower die seat 1 are closed, the top plate 31 is located at the bottom of the seamless paper tube, and when the mold is opened, the top plate 31 rises, so that the seamless paper tube can be ejected from the outside of the mold core 5.

[0039] Further, the first material ejection assembly 3 further comprises a mounting groove 33, a supporting spring 34, a connecting column 35 and a first limiting block 36, the mounting groove 33 is arranged on the bottom of the lower die seat 1, the supporting spring 34 is slidingly sleeved in the mounting groove 33, the connecting column 35 is fixedly connected to the bottom of the top plate 31, the outer wall of the connecting column 35 is slidingly inserted into the lower die seat 1, and the first limiting block 36 is fixedly connected to the bottom of the connecting column 35. The bottom of the first limiting block 36 is attached to the supporting spring 34, and when the upper die seat 2 is opened, the supporting spring 34 provides an upward elastic force to the top plate 31 through the first limiting block 36 and the connecting column 35, so that the top plate 31 moves upward.

[0040] Embodiment 2

[0041] On the basis of embodiment 1, the second material ejection assembly 4 comprises a top block 41, a connecting plate 42 and a connecting groove 43, the top block 41 is slidingly sleeved on the top of the inner cavity of the mold cavity, the connecting groove 43 is arranged on the top of the inner wall of the mold cavity, the connecting plate 42 is fixedly connected to the top of the side of the top block 41, and the connecting plate 42 is slidingly arranged in the connecting groove 43. When the upper die seat 2 is opened, the top block 41 slides downward in the mold cavity, so that the seamless paper tube in the mold cavity can be ejected.

[0042] Further, the second material ejection assembly 4 further comprises a connecting rod 44 and a second limiting block 45, the connecting rod 44 is fixedly connected to the bottom of the connecting plate 42, the outer wall of the connecting rod 44 is slidingly inserted into the upper die seat 2, and the second limiting block 45 is fixedly connected to the bottom of the connecting rod 44. The second material ejection assembly 4 further comprises a bearing groove and a limiting spring 46, the bearing groove is arranged on the bottom of the upper die seat 2, the second limiting block 45 is slidingly sleeved in the bearing groove, and the limiting spring 46 is slidingly sleeved on the outside of the connecting rod 44. The limiting spring 46 is located on the top of the second limiting block 45, and the limiting spring 46 can provide a downward elastic force to the connecting plate 42 through the second limiting block 45 and the connecting rod 44, so that the connecting plate 42 drives the top block 41 to move downward, and when the upper die seat 2 is closed, the bottom of the second limiting block 45 is attached to the top plate 31, and the top block 41 moves to the top of the mold cavity to extrude and shape the top of the seamless paper tube.

[0043] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A seamless paper tube seamless extrusion molding apparatus characterized by, Include: Lower die seat (1), the top of the lower die seat (1) is fixedly connected with the die core (5) extruded to the inner cavity of seamless paper tube; Upper die seat (2), the upper die seat (2) is arranged on the top of the lower die seat (1), and the bottom of the upper die seat (2) is provided with a die cavity corresponding to the die core (5); First material returning assembly (3), the first material returning assembly (3) is arranged on the top of the lower die seat (1), and is used for material returning to the seamless paper tube outside the die core (5); Second material returning assembly (4), the second material returning assembly (4) is arranged in the inside of the upper die seat (2), and is used for material returning to the seamless paper tube inside the die cavity.

2. A seamless paper tube seamless extrusion molding apparatus according to claim 1, wherein The first material returning assembly (3) comprises: Top plate (31), the top plate (31) is arranged on the top of the lower die seat (1), and the top of the top plate (31) is matched with the upper die seat (2); Through hole (32), the through hole (32) is arranged on the top of the top plate (31), and the inner cavity of the through hole (32) is matched with the bottom of the outer wall of the die core (5).

3. A seamless paper tube seamless extrusion molding apparatus according to claim 2, wherein The first material returning assembly (3) further comprises: Mounting groove (33), the mounting groove (33) is arranged on the bottom of the lower die seat (1); Support spring (34), the support spring (34) is slidably connected to the inside of the mounting groove (33); Connecting column (35), the connecting column (35) is fixedly connected to the bottom of the top plate (31), and the outer wall of the connecting column (35) is slidably connected to the lower die seat (1); First limiting block (36), the first limiting block (36) is fixedly connected to the bottom of the connecting column (35), and the bottom of the first limiting block (36) is matched with the extrusion of the support spring (34).

4. A seamless paper tube seamless extrusion molding apparatus according to claim 1, wherein The second material returning assembly (4) comprises: Top block (41), the top block (41) is slidably connected to the top of the inner cavity of the die cavity; Connecting groove (43), the connecting groove (43) is arranged on the top of the inner wall of the die cavity; Connecting plate (42), the connecting plate (42) is fixedly connected to the top of the side of the top block (41), and the connecting plate (42) is slidably arranged in the inside of the connecting groove (43).

5. A seamless paper tube seamless extrusion molding apparatus according to claim 4, wherein The second material returning assembly (4) further comprises: Connecting rod (44), the connecting rod (44) is fixedly connected to the bottom of the connecting plate (42), and the outer wall of the connecting rod (44) is slidably connected to the upper die seat (2); Second limiting block (45), the second limiting block (45) is fixedly connected to the bottom of the connecting rod (44).

6. A seamless paper tube seamless extrusion molding apparatus according to claim 5, wherein The second material returning assembly (4) further comprises: Bearing groove, the bearing groove is arranged on the bottom of the upper die seat (2), and the second limiting block (45) is slidably connected to the inside of the bearing groove; Limiting spring (46), the limiting spring (46) is slidably connected to the outside of the connecting rod (44), and the limiting spring (46) is located on the top of the second limiting block (45).

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