CN216733148U

CN216733148U - Auxiliary structure for replacing die and extruding equipment

Info

Publication number: CN216733148U
Application number: CN202123007115.8U
Authority: CN
Inventors: 张亮; 吴惠军; 高速
Original assignee: China Petroleum and Chemical Corp; Sinopec Catalyst Co
Current assignee: China Petroleum and Chemical Corp; Sinopec Catalyst Co
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-06-14
Anticipated expiration: 2031-12-02

Abstract

The utility model relates to a change mould technical field, disclose a change auxiliary structure and crowded material equipment of mould, this change auxiliary structure of mould includes: the die frame is provided with an axial through hole and a radial through groove in the peripheral wall, wherein the die frame can be connected to a discharge port of the extruder and connected to allow the material extruded by the extruder to be output through the axial through hole; the bolt is detachably inserted into the radial through groove so as to lock the mold installed in the axial through hole and enable the mold to be axially aligned with the discharge hole. The utility model provides a change auxiliary structure of mould not only can be quick install on the discharge gate of extruder, but also can change the mould fast.

Description

Auxiliary structure for replacing die and extruding equipment

Technical Field

The utility model relates to a change mould technical field, specifically relate to a change auxiliary structure and crowded material equipment of mould.

Background

Extrusion molding is considered the most suitable low cost process for producing uniform cross-section articles in a variety of ceramic, plastic, fiber and bulk chemical molding processes. Extrusion molding may be carried out at low temperature or low pressure to extrude long strands, tubes or sheets from the powder mixture. In recent years, extrusion molding has received more and more attention in the preparation process of composite materials, and research and development work at present mainly focuses on the preparation of various extrusion raw materials, the application development of new extrusion processes, guidance of theories on the process and equipment development, and the like.

In the extrusion molding equipment, a mold plate is a support of a molding mold (generally also called as a pore plate), the pore plate is a key component of the equipment and directly influences the appearance, the sectional shape, the size, the strength and the like of a product, and in the production process of an extruder, due to the long-time scouring of materials, the aperture of the pore plate is increased, the sectional shape is changed, and the mold needs to be replaced in time when the process index is exceeded. Therefore, the speed of replacing the die plate and the orifice plate is an important index affecting the production efficiency, and is a bottleneck restricting the production capacity.

At present, most of extruder die plates and equipment adopt a threaded connection mode, the die is replaced in a manual mode, the die replacement speed is low, the labor intensity is high, the bolt loss is high, and the production capacity of the extruder is greatly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a change the auxiliary structure and crowded material equipment of mould in order to overcome the problem of the change of the extruder mould board that prior art exists, this change the auxiliary structure of mould not only can be quick install on the discharge gate of extruder, but also can change the mould fast.

In order to achieve the above object, an aspect of the present invention provides an auxiliary structure for replacing a mold, including: the die frame is provided with an axial through hole and a radial through groove on the peripheral wall, wherein the die frame can be connected to a discharge hole of the extruder and connected to allow the material extruded by the extruder to be output through the axial through hole; the bolt is detachably inserted into the radial through groove to lock the mold installed in the axial through hole and enable the mold to be axially aligned with the discharge hole.

Optionally, a transition fit is adopted between the bolt and the radial through groove.

Optionally, the radial logical groove is the wedge groove, the bolt is the wedge bolt, the wedge groove with the wedge bolt is followed the radial inside convergent of mould frame, and this wedge groove and this wedge bolt be close to one side of extruder is relative the radial slope of mould frame extends, and the opposite side perpendicular to the axis direction of mould frame, under the grafting state, the bolt to the axial through hole is inside to be projected in order can through support by in the mould deviate from the terminal surface of discharge gate and lock this mould.

Optionally, an inclination angle of the inclined extending side of the wedge-shaped slot and the wedge-shaped bolt is smaller than a self-locking friction angle between the wedge-shaped slot and the wedge-shaped bolt.

Optionally, the auxiliary structure comprises at least one of:

the first situation is as follows: knurling is arranged on the end face of the plug pin, which is abutted against the die;

case two: the mould deviates from the discharge hole and abuts against the end face of the bolt to form a knurling.

Optionally, keeping away from of bolt one end of axial through hole is provided with relatively radial logical groove is in the dismantlement operation portion of axial skew, auxiliary structure includes the spiro union dismantle operation portion and lean on in one end in the mould unloading jackscrew on the outer wall of mould frame, wherein, at the in-process of dismantling the mould, through rotating the mould unloading jackscrew drives the bolt radially outwards shifts out radial logical groove.

Optionally, the disassembling operation part is provided with a radial screw hole screwed with the die-disassembling jackscrew, wherein the radial screw hole and the die-disassembling jackscrew are both provided with coarse threads.

Optionally, the connection mode of the die frame to the discharge port of the extruder includes one of the following modes:

the first method is as follows: the die frame is sleeved on the discharge hole;

the second method comprises the following steps: one side of the die frame is abutted against the discharge hole, and the other side of the die frame is abutted against the die.

Optionally, the connection mode of the die frame to the discharge port of the extruder includes one of the following conditions:

the first situation is as follows: the mould frame is arranged to allow the mould to abut against the discharging port;

case two: the inner circumferential surface of the circumferential wall of the die frame is provided with a circumferential boss extending along the radial direction, one side of the circumferential boss is abutted against the discharge hole, and the other side of the circumferential boss is abutted against the die.

Optionally, a plurality of the radial through grooves are uniformly distributed along the circumferential direction of the circumferential wall.

The utility model discloses the second aspect provides an crowded material equipment, this crowded material equipment includes extruder, mould and foretell auxiliary structure who changes the mould, the mould is connected to through this auxiliary structure the discharge gate of extruder.

Through the technical scheme, the utility model discloses there is following beneficial effect:

the die frame can be rapidly installed on the discharge port, the dies can be rapidly replaced, and meanwhile, the dies are fixed through the self-locking principle. When the mold is replaced, only the bolt needs to be disassembled and the grinding tool needs to be replaced; when the mold is replaced, the plug pin is inserted into the radial through groove and abuts against the mold, and the plug pin and the mold are self-locked, so that the mold is locked.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

In the accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, together with the following detailed description serve to explain the invention, but not to limit the invention.

Fig. 1 is a schematic view of an embodiment of an auxiliary structure for replacing a mold according to the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic view of one embodiment of a mold frame of the present invention;

FIG. 4 is a cross-sectional view B-B of FIG. 3;

FIG. 5 is a schematic view of an embodiment of the wedge shaped pin of the present invention;

fig. 6 is a schematic view of an embodiment of a mold plate according to the present invention.

Description of the reference numerals

1-mold frame, 11-screw hole, 12-radial through groove, 13-axial through hole, 2-mold, 21-mold hole, 3-flange, 4-inner tube, 5-outer tube, 6-bolt, 61-mold unloading jackscrew through hole, 7-mold unloading jackscrew and 8-mounting bolt.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

As shown in fig. 1 to 4, the auxiliary structure for replacing the mold of the present invention includes: the die holder 1 is provided with an axial through hole 13 and is provided with a radial through groove 12 on the peripheral wall, wherein the die holder 1 can be connected to a discharge hole of an extruder and connected to allow the material extruded by the extruder to be output through the axial through hole 13. There are various ways for connecting the mold frame 1 to the discharge port, and the detailed description is provided later.

In addition, as shown in fig. 2 and 4, the axial through hole 13 of the die holder 1 is mainly used for allowing the material extruded by the extruder to rapidly pass through the die holder 1. Wherein, the diameter of axial through hole 13 is not less than the diameter of discharge gate, mainly is to avoid the ejection of compact speed that mould frame 1 slows down the extruder, prevents that the material from going out at the discharge gate because axial through hole 13 undersize and cause the material in mould frame 1 extrusion discharge gate to cause material density too big, influence the yield. As shown in fig. 2 and 4, the size of the axial through hole 13 in the present invention is preferably the same as the diameter of the discharge hole, if the diameter of the axial through hole 13 is too large, the material may be accumulated on the edge of the axial through hole 13, and the working strength of the worker for cleaning the axial through hole 13 is increased; if the diameter of the axial through hole 13 is too small, it may cause the material to be jammed in the extruder, causing damage to the extruder.

As shown in fig. 1, fig. 2 and fig. 5, the auxiliary structure for replacing the mold of the present invention includes: and the bolt 6 is detachably inserted into the radial through groove 12 to lock the mold 2 installed in the axial through hole 13 and enable the mold 2 to be axially aligned with the discharge hole. When the extruder normally functions, bolt 6 is pegged graft and is being led to groove 12 and support and lean on mould 2 in radial to locking mould 2 avoids mould 2 to rock (rock including axial displacement and radial movement), influences the material shaping for the position of mould frame 1. When the mould 2 is replaced, the plug pins 6 inserted in the radial through grooves 12 are taken out, and then the mould 2 is replaced. When the mould 2 is mounted, the pins 6 are inserted in the radial through slots 12 and against the mould 2 to lock the mould 2.

Furthermore, the utility model provides a mould frame 1 is hollow cylinder, and mould 2's shape and mould frame 1 phase-match, promptly, mould 2 global just the internal perisporium of internal grafting in mould frame 1 prevents mould 2 radial movement. Secondly, the mould 2 is prevented from moving axially due to the pins 6 locking the mould 2 to the mould holder 1.

As shown in fig. 2, the plug pin 6 and the radial through groove 12 of the present invention are in transition fit.

In order to prevent the pins 6 from being subjected to shear forces (as shown in fig. 2, the mold 2 moves axially, thereby generating shear forces on the pins 6), mechanical fatigue of the pins 6 due to excessive shear forces is prevented. If the mechanical fatigue of bolt 6 is excessive, can cause bolt 6 deformation or fracture to make bolt 6 can not accomplish grafting or dismantlement fast, more likely appear bolt 6 can not peg graft in radial logical groove 12 or bolt 6 can not take out from radial logical groove 12, cause mould 2 can not be locked or mould 2 card is died on mould frame 1, can not realize the quick replacement to mould 2. As shown in fig. 2, fig. 4 and fig. 5, in the present invention, the radial through groove 12 is a wedge-shaped groove, the pin 6 is a wedge-shaped pin, the wedge-shaped groove and the wedge-shaped pin are along the radial inward taper of the mold frame 1, and the wedge-shaped groove and the wedge-shaped pin are close to one side of the extruder is opposite to the radial inclination of the mold frame 1, and the other side is perpendicular to the axial direction of the mold frame 1. When the extruder is operating properly, the die 2 and the pins 6 are in turn subjected to an axial force, which causes the pins 6 to move radially outwards due to the interaction between the die 2 and the pins 6. However, since the contact surface where the mold 2 and the plug pin 6 abut against each other is inclined in the radial direction and the other side of the plug pin 6 abuts against the mold frame 1 vertically, self-locking friction force is generated between the mold 2 and the plug pin 6, and the plug pin 6 is prevented from moving in the radial direction. As shown in fig. 2, in the plugged state, the plug pin 6 protrudes into the axial through hole 13 so as to be able to lock the mold 2 by abutting against an end face of the mold 2 facing away from the discharge opening.

As shown in fig. 2, 4, 5 and 6, the inclined angle of the inclined extending side of the wedge-shaped slot and the wedge-shaped bolt is smaller than the self-locking friction angle between the wedge-shaped slot and the wedge-shaped bolt. Wherein, the preferred inclination in the utility model is 15. Mainly let produce the auto-lock phenomenon between mould 2 and the bolt 6 for bolt 6 can not radially outwards remove, thereby can lock mould 2. The greater the force of the material on the mould 2, the greater the self-locking friction between the mould 2 and the spigot 6. The greater the latching pin 6 is due to the self-locking friction, the less the latching pin 6 can move radially outwards at all. Therefore, as long as the die 2 is installed on the die frame 1 through the plug 6, the self-locking friction force between the plug 6 and the die 2 is always larger than the self-locking friction force between the plug 6 and the die 2 when the extruder is in an idle state from the beginning of running to the end of stopping working of the extruder. The wedge-shaped groove and the wedge-shaped bolt are designed to enable a self-locking phenomenon to occur between the bolt 6 and the die 2, and the bolt 6 is prevented from moving radially.

The utility model provides an auxiliary structure includes one of at least following condition:

the first situation is as follows: knurling is arranged on the end face, abutting against the die 2, of the plug pin 6, and the knurling is mainly used for increasing self-locking friction force between the plug pin 6 and the die 2 and preventing the plug pin 6 from falling off in the radial direction;

case two: the mould 2 deviates from the discharge gate and support and lean on in be provided with the annular knurl on the terminal surface of bolt 6, in order to increase the auto-lock frictional force between bolt 6 and the mould 2, prevent that bolt 6 from radially droing.

The utility model provides an auxiliary structure is preferred to adopt above-mentioned two kinds of situations, namely, all sets up the annular knurl on the contact surface of mutual contact between bolt 6 and mould 2, further increases the auto-lock frictional force between bolt 6 and the mould 2, prevents that bolt 6 from radially droing.

As shown in fig. 1, fig. 2 and fig. 5, in the utility model discloses a keeping away from of bolt 6 the one end of axial through hole 13 is provided with relatively radial through groove 12 is in the dismantlement operation portion of axial skew, auxiliary structure includes the spiro union dismantle operation portion and support in one end support in mould frame 1 is last to unload mould jackscrew 7, wherein, at the in-process of dismantling mould 2, through rotating mould unloading jackscrew 7 drives bolt 6 radially outwards shifts out radial through groove 12. When the die 2 needs to be replaced, the die unloading jackscrew 7 is screwed to the disassembling operation part, and then the die unloading jackscrew 7 is rotated until the die unloading jackscrew 7 abuts against the outer wall surface of the die frame 1. The interaction force between the mould unloading jackscrew 7 and the outer wall surface drives the bolt 6 to move radially outwards, so that the bolt 6 in the radial through groove 12 falls off, and then the mould 2 is replaced.

In addition, the disassembling operation part is provided with a radial screw hole 61 which is screwed with the die-disassembling jackscrew 7, and the die-disassembling jackscrew 7 is screwed to the disassembling operation part through the radial screw hole 61 and is abutted against the outer wall surface of the die frame 1. The mould unloading jackscrew 7 is rotated, and the mould unloading jackscrew 7 drives the bolt 6 to move radially outwards due to the interaction force generated between the mould unloading jackscrew 7 and the outer wall surface, so that the bolt 6 is disassembled and the mould 2 is replaced. The radial screw hole 61 and the die unloading jackscrew 7 are both provided with thick threads, so that the bolt 6 can be rapidly disassembled after being self-locked.

The utility model provides a mould frame 1 is connected to the extruder the discharge gate, wherein, mould frame 1 can be welding to the discharge gate, perhaps mould frame 1 passes through bolted connection to the discharge gate to one of the cooperation mode including following mould frame 1 and discharge gate:

the first method is as follows: the mould frame 1 is a cylindrical body, and the mould frame 1 is sleeved on the discharge hole and comprises the following conditions:

the first situation is as follows: the mould holder 1 is arranged to allow the mould 2 to abut against the discharge opening.

Case two: a circumferential boss extending along the radial direction is formed on the inner circumferential surface of the circumferential wall of the die holder 1, one side of the circumferential boss is abutted against the discharge port, and the other side of the circumferential boss is abutted against the die 2.

The second method comprises the following steps: the mould frame 1 is a cylindrical body, one side of the mould frame 1 is abutted against the discharge hole, and the other side of the mould frame 1 is abutted against the mould 2. Specifically, since the mold frame 1 is a cylindrical structure, in order to allow the plug 6 to lock the mold 2 to the mold frame 1, a circumferential boss extending in the radial direction is formed on the inner circumferential surface of the circumferential wall of the mold frame 1, one side of the boss abuts against the discharge port, and the other side of the boss abuts against the mold 2.

Furthermore, the utility model provides a die holder 1 is connected to the discharge gate of extruder and the connected mode of mould 2 and is preferred:

as shown in fig. 1 and 2, the discharge pipe of the extruder includes an inner pipe 4, an outer pipe 5 disposed on the inner pipe 4, and a flange 3 disposed on the outer pipe 5. Wherein, a circumferential boss extending along the radial direction is formed on the inner circumferential surface of the circumferential wall of the die frame 1, one side of the boss is abutted against the discharge hole, and the other side of the boss is abutted against the die 2.

As shown in fig. 2, one side of the die holder 1 abuts against and is screwed to the discharge port of the extruder, and the mounting bolt 8 is screwed to the screw hole 11 and mounts the die holder 1 on the flange 3. Wherein, a plurality of mounting bolts 8 and screw 11 circumference evenly distributed.

In addition, the die 2 is connected in such a manner as to abut against the die holder 1 (indirectly connected to the discharge port).

As shown in fig. 1 and 3, the radial through grooves 12 in the present invention are uniformly distributed along the circumferential direction of the circumferential wall. Mainly in order to make mould 2 evenly atress, avoid mould 2 local deformation.

As shown in fig. 2 and 6, the contact surface of the mold 2 and the plug 6 is a tapered surface, so that the tapered surface of the mold 2, the radial inclined surface of the plug 6, and the radial inclined surface of the radial through groove 12 are coplanar.

The utility model discloses the second aspect provides an crowded material equipment, including extruder, mould 2 and foretell auxiliary structure who changes the mould, mould 2 is connected to through this auxiliary structure the discharge gate of extruder. As shown in fig. 2 and 6, the contact surface of the mold 2 and the plug 6 is a tapered surface, so that the mold 2 and the plug 6 can be better fitted to each other. Wherein, the die 2 is provided with a plurality of die holes 21.

The structure principle is as follows: when the die 2 is installed, the die 2 is installed to the center of the die frame 1, and then the plug pin 6 is fixed in the radial through groove of the die frame 1 and is wedged tightly by external force. At this time, the stripper jack 7 is in a loosened state. When dismantling mould 2, direct rotation unloads mould jackscrew 7, can directly loosen wedge bolt and the mould 2 that are in mutual auto-lock state, reach quick replacement mould effect, bolt 6 can used repeatedly moreover.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide the technical solution of the present invention with a plurality of simple modifications, including combining each specific technical feature in any suitable manner, and in order to avoid unnecessary repetition, the present invention does not provide additional description for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. An auxiliary structure for replacing a mold, comprising:

the die holder (1) is provided with an axial through hole (13) and a radial through groove (12) in the peripheral wall, wherein the die holder (1) can be connected to a discharge hole of an extruder and connected to allow the material extruded by the extruder to be output through the axial through hole (13);

the bolt (6) is detachably inserted into the radial through groove (12) to lock the mold (2) installed in the axial through hole (13) and enable the mold (2) to be axially aligned with the discharge hole.

2. A structure as claimed in claim 1, characterized in that said plug pins (6) are fitted with said radial through slots (12) in a transition manner.

3. An auxiliary structure for changing a mold according to claim 2, characterized in that the radial through groove (12) is a wedge-shaped groove, the plug pin (6) is a wedge-shaped plug pin, the wedge-shaped groove and the wedge-shaped plug pin are tapered inward in the radial direction of the mold frame (1), one side of the wedge-shaped groove and the side of the wedge-shaped plug pin close to the extruder extend obliquely relative to the radial direction of the mold frame (1), the other side is perpendicular to the axial direction of the mold frame (1), and in the plugging state, the plug pin (6) protrudes inward of the axial through hole (13) so as to lock the mold (2) by abutting against an end face of the mold (2) away from the discharge port.

4. A mold change aid according to claim 3 wherein the angle of inclination of the obliquely extending sides of the wedge-shaped slot and the wedge-shaped pin is less than the self-locking friction angle between the wedge-shaped slot and the wedge-shaped pin.

5. A mold change aid according to claim 3, wherein said aid comprises at least one of:

the first situation is as follows: knurling is arranged on the end face, abutted against the die (2), of the plug pin (6);

case two: the mould (2) deviates from the discharge hole and is abutted against the end face of the bolt (6) to form a knurling.

6. The auxiliary structure for changing a mold according to claim 1, wherein an end of the plug pin (6) far away from the axial through hole (13) is provided with a disassembly operation portion axially offset from the radial through groove (12), and the auxiliary structure comprises a die-unloading jackscrew (7) screwed on the disassembly operation portion and abutting against the outer wall surface of the mold frame (1) at one end, wherein during the disassembly of the mold (2), the plug pin (6) is driven to move radially outwards out of the radial through groove (12) by rotating the die-unloading jackscrew (7).

7. The auxiliary structure for replacing a mold according to claim 6, wherein the disassembling operation part is provided with a radial screw hole (61) which is screwed with the mold-unloading jackscrew (7), and the radial screw hole (61) and the mold-unloading jackscrew (7) are both provided with coarse threads.

8. The auxiliary structure for changing a die according to claim 1, wherein the connection manner of the die frame (1) to the discharge port of the extruder comprises one of the following manners:

the first method is as follows: the mould frame (1) is sleeved on the discharge hole;

the second method comprises the following steps: one side of the die frame (1) is abutted against the discharge hole, and the other side of the die frame is abutted against the die (2).

9. The auxiliary structure for changing a die according to claim 8, wherein the connection manner between the die frame (1) and the discharge port of the extruder includes one of the following conditions:

the first situation is as follows: the mould frame (1) is arranged to allow the mould (2) to abut against the discharging port;

case two: a circumferential boss extending along the radial direction is formed on the inner circumferential surface of the circumferential wall of the die frame (1), one side of the circumferential boss abuts against the discharge port, and the other side of the circumferential boss abuts against the die (2).

10. A structure assisting in the exchange of moulds according to any one of claims 1-9, characterised in that a plurality of the radial through slots (12) are evenly distributed along the circumferential direction of the circumferential wall.

11. A device for extruding, characterized in that it comprises an extruder, a die (2) and an auxiliary structure for changing die according to any one of claims 1-10, by means of which the die (2) is connected to the outlet of the extruder.