CN220008388U - Extrusion device - Google Patents

Abstract

The present utility model provides an extrusion apparatus comprising: a barrel assembly having a feed channel for delivering a sizing material; the machine head assembly is connected with the machine barrel assembly, the machine head assembly is provided with a runner communicated with the feeding channel, one end of the runner, which is far away from the feeding channel, is provided with an extrusion port, and at least one part of the machine head assembly can move relative to the machine barrel assembly; the conveying assembly is provided with a conveying screw rod, one end of the machine barrel assembly, which is far away from the machine head assembly, stretches into the feeding channel and enters the flow channel, and the conveying screw rod can rotate relative to the machine barrel assembly and the machine head assembly; a die plate disposed on the extrusion port; the first roller is rotatably arranged at the extrusion opening, the first roller and the die plate are oppositely arranged, and the pressure in the flow channel is changed along with the rotation speed of the conveying screw and the first roller. The utility model solves the problem of unstable rubber extrusion temperature and pressure in the rubber extrusion process in the prior art.

Description

Extrusion device

Technical Field

The utility model relates to the technical field of rubber processing and forming equipment, in particular to an extrusion device.

Background

The extruder is also called an extruder, is widely used in the rubber processing field, and is used for continuously preparing various semi-finished products with different shapes through a machine head under the interaction of a machine barrel of the extruder and a rotating screw rod. For example, the rubber can be extruded into semi-finished products such as tire treads, inner tire drums, thin films, rubber tubes, wires and cables, and the like, and can also be used for filtering rubber materials, granulating, plasticating raw rubber, coating base materials, linking upstream and downstream processes, and the like.

In the use process of the traditional extruder, most rubber products (such as molding rubber, thin rubber and the like) are produced, rubber materials with plastic deformation capability and certain fluidity can be extruded and molded according to the required shape and size under the high-temperature and high-pressure environment, and the screw and the machine head have the function of providing the molding environment of the rubber materials. The pressure and temperature generally show an increasing trend along with the increase of the rotating speed of the screw, namely the traditional high-temperature and high-pressure extrusion environment is passively formed, the temperature and the pressure of the environment depend on the conveying of the front-end screw and the drawing of the rear-end material, the temperature and the pressure can change along with the fluctuation of the upstream and the downstream, and the instability is also an important reason that the fluctuation of the shape, the size, the weight and the like of an extrusion molding product occurs.

From the angle of rubber molecular chain, the rubber material is shaped and extruded through a machine head runner-die plate, the extruded product has internal stress, and generally generates deformation, namely the phenomenon of unstable shape and dimension after extrusion, and the shape and dimension are slightly different due to the difference of formula materials.

In addition, since the extrusion temperature can influence the performance of rubber materials, the extrusion and rubber discharge limit temperature can be limited according to different formulas and products in the extrusion processing of common products, so that the conveying capacity of an extruder screw is limited to a great extent, and the production efficiency is influenced.

In order to solve the problems, the industry carries out various technical researches such as low-temperature Gao Shusong extrusion, high plasticizing capacity extrusion, multi-screw extrusion and the like, and has not been widely accepted and popularized at present.

A typical technical solution is to integrate an extruder and a gear pump, in short, a screw conveys the material into the gear pump, and the material is conveyed to a machine head by a power-driven gear pump, namely, the gear pump is used for dividing the material area into a front part and a rear part, and the control of the partition pressure is realized.

The scheme has the defects of higher matching cost of the gear pump, poor suitability for various rubber materials with different formulas and higher requirement on the cleanliness of the input materials. The rubber with impurities can be used only by front-end filtration, otherwise, the pump is damaged, but adding a filtration process to rubber materials with certain formulas can affect the material performance, and the upstream rubber compound production process, material turnover and the like become more complicated, so that the scheme is not suitable for most rubber extrusion processing production, and is currently applied to customized precise extrusion of diversified products.

Therefore, the prior art has the technical problem that the rubber extrusion temperature and pressure are unstable in the rubber extrusion process.

Disclosure of Invention

The utility model mainly aims to provide an extrusion device which is used for solving the problem that the rubber extrusion temperature and pressure are unstable in the rubber extrusion process in the prior art.

In order to achieve the above object, according to one aspect of the present utility model, there is provided an extrusion apparatus comprising: a barrel assembly having a feed channel for delivering a sizing material; the machine head assembly is connected with the machine barrel assembly, the machine head assembly is provided with a runner communicated with the feeding channel, one end of the runner, which is far away from the feeding channel, is provided with an extrusion port, and at least one part of the machine head assembly can move relative to the machine barrel assembly; the conveying assembly is provided with a conveying screw rod, one end of the machine barrel assembly, which is far away from the machine head assembly, stretches into the feeding channel and enters the flow channel, and the conveying screw rod can rotate relative to the machine barrel assembly and the machine head assembly; a die plate disposed on the extrusion port; the first roller is rotatably arranged at the extrusion opening, the first roller and the die plate are oppositely arranged, and the pressure in the flow channel is changed along with the rotation speed of the conveying screw and the first roller.

Further, the feeding direction of the conveying screw is perpendicular to the axial direction of the first roller.

Further, the extrusion device further comprises a second roller, and the second roller is arranged on one side, away from the extrusion opening, of the first roller.

Further, the first roller and the second roller are parallel to each other; and/or the diameter of the first roller is larger than that of the second roller; and/or the first roller and the second roller are arranged at intervals.

Further, extrusion device still includes mounting bracket and first drive assembly, and head assembly and first drive assembly set up respectively on the mounting bracket, and first drive assembly is connected with first roller and second roller drive respectively.

Further, the extrusion device further comprises a pressure sensor, the pressure sensor is arranged on the machine head assembly and detects the pressure of one end, close to the feeding channel, of the flow passage, and the pressure sensor is respectively connected with the conveying assembly and the first driving assembly in a signal mode.

Further, the extrusion apparatus further includes: the two mounting plates are arranged on the machine head assembly, and two ends of the first roller and two ends of the second roller are respectively connected with the two mounting plates; at least two heightening components are arranged on the mounting frame, and each mounting plate is respectively abutted with at least one different heightening component.

Further, the heightening assembly comprises: the jacking block is abutted with the mounting plate; one end of the screw rod is rotatably arranged on the top block; the thread bush is fixedly arranged on the mounting frame and is in threaded connection with the screw rod; the guide block is abutted with one side, close to the top block, of the threaded sleeve; the wedge block is arranged between the guide block and the top block, and the guide block is provided with a guide surface matched with the wedge block.

Further, the height adjusting assembly further comprises an extrusion part, the extrusion part is arranged on the mounting frame and located on one side, far away from the first roller, of the wedge-shaped block, the extrusion part can move along the direction, close to or far away from the wedge-shaped block, and the movement direction of the extrusion part is perpendicular to the axial direction of the screw rod.

Further, the extrusion device further comprises a runner plate, one end of the runner plate is arranged at one end of the runner close to the extrusion opening, the other end of the runner plate extends out of the extrusion opening and extends towards the first roller, and one end of the runner plate extending out of the runner is provided with an abutting cambered surface matched with the first roller.

Further, the extrusion device further comprises a first locking assembly arranged on the head assembly, at least one part of the first locking assembly can move in a direction approaching or separating from the die plate so as to lock or unlock the die plate.

Further, the first locking assembly includes: the driving part is arranged on the machine head assembly; a connection part; the locking plugboard is connected with the driving part through the connecting part and can move along the direction close to or far away from the die plate so as to lock or unlock the die plate.

Further, the first locking assembly further comprises a cover plate, the cover plate is arranged on one side, far away from the head assembly, of the locking plugboard, the cover plate is detachably connected with the head assembly, and the connecting part comprises: the connecting piece is respectively connected with the driving part and the locking plugboard; the pin shaft extends into the locking plugboard from one side of the locking plugboard, which is far away from the nose assembly, and is connected with the connecting piece.

Further, the runner includes first section and the second section of connecting in order, and first section and feeding channel intercommunication, and the aircraft nose subassembly includes: the first machine head is connected with the machine barrel assembly and is provided with a first section; the second machine head is pivotally connected with the first machine head, and one end, away from the machine barrel assembly, of the first machine head and the second machine head enclose a second section.

Further, the extrusion device further comprises at least two second locking assemblies, at least one second locking assembly is respectively arranged on two sides of the machine head assembly, and the second locking assembly comprises: one end of the pull rod is connected with the first machine head; the other end of the pull rod is connected with the driving oil cylinder; the locking block is arranged on the driving oil cylinder and can move along the direction of approaching or separating from the machine head assembly along with the driving oil cylinder so as to lock or unlock the second machine head.

Further, the locking block is a U-shaped block, and when the second machine head is locked by the locking block, the locking block is respectively abutted with the first machine head and the second machine head.

When the extrusion device is used, rubber material enters a feeding channel positioned in a machine barrel from one end of a machine barrel component, a conveying screw rod is arranged in the feeding channel, the conveying screw rod extends into the feeding channel from one end of the machine barrel component, which is far away from a machine head component, and enters a flow channel, and the conveying screw rod can rotate relative to the machine barrel component and the machine head component, so that the rubber material can be conveyed from one side of the machine barrel component to one side of an extrusion outlet through the conveying screw rod; the sizing material enters the runner through the feeding channel under the action of the conveying screw, and is finally extruded from an extrusion port positioned at one end of the runner far away from the feeding channel. In addition, the sizing material can be extruded according to a specific shape by arranging the die plate on the extrusion port; the first roller is rotatably arranged at the extrusion opening, and meanwhile, the first roller and the die plate are oppositely arranged, so that sizing materials can be molded and extruded from the die plate under the pushing of the conveying screw and the traction of the first roller along with the rotation of the first roller after being extruded to the die plate and the first roller. The speed of the sizing material is synchronous with the speed of the roller when the sizing material leaves the opening, the pressure tends to zero, the pressure and the temperature of the material in the flow passage of the machine head are lower, the product has small shrinkage deformation and stable cross section size. Meanwhile, in the conveying process of the sizing material in the runner, the runner is a closed space except for the feeding port and the extruding port, so that the pressure of the closed space in the runner can be controlled by changing the feeding speed of the screw and the discharging speed of the extruding port, and the pressure in the runner is stabilized and fluctuated within an allowable range by controlling the rotating speeds of the conveying screw and the first roller, so that the pressure stability before material molding can be always maintained, and the shape, size and weight stability of a product are ensured. Therefore, the extrusion device effectively solves the problem of unstable rubber extrusion temperature and pressure in the rubber extrusion process in the prior art.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a schematic diagram of the working principle of an embodiment of an extrusion device according to the utility model;

fig. 2 shows a front view of an embodiment of an extrusion device according to the utility model;

FIG. 3 shows a side view of an embodiment of an extrusion device according to the present utility model;

FIG. 4 shows a cross-sectional view along A-A in FIG. 2;

FIG. 5 is a diagram showing an open state of a head assembly of an embodiment of an extrusion device according to the present utility model;

fig. 6 shows a top view of an embodiment of an extrusion device according to the utility model;

FIG. 7 is a front view showing an opened state of a head assembly of an embodiment of an extrusion apparatus according to the present utility model; and

fig. 8 shows a schematic view of the installation of a first roll of an embodiment of an extrusion device according to the utility model.

Wherein the above figures include the following reference numerals:

10. a barrel assembly; 11. a feed channel; 20. a handpiece assembly; 21. a flow passage; 22. an extrusion port; 23. a first section; 24. a second section; 25. a first handpiece; 26. a second handpiece; 27. a rotating shaft; 28. a turnover oil cylinder; 29. a safety hook; 30. a transport assembly; 31. a conveying screw; 40. a die plate; 50. a first roller; 60. a second roller; 70. a mounting frame; 80. a first drive assembly; 81. a driving motor; 82. a coupling; 83. a drive sprocket; 84. a driven sprocket; 85. a chain; 90. a pressure sensor; 100. a mounting plate; 110. an elevation adjustment assembly; 111. a top block; 112. a screw rod; 113. a thread sleeve; 114. a guide block; 115. wedge blocks; 116. an extrusion part; 120. a flow channel plate; 121. abutting the cambered surface; 130. a first locking assembly; 131. a driving section; 132. a connection part; 133. locking the plugboard; 134. a cover plate; 135. a guide key; 140. a second locking assembly; 141. a pull rod; 142. a driving oil cylinder; 143. locking blocks.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs unless otherwise indicated.

In the present utility model, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present utility model.

The utility model provides an extrusion device for solving the problem that the extrusion temperature and pressure of rubber are unstable in the rubber extrusion process in the prior art.

As shown in fig. 1 to 8, the extrusion apparatus of the present utility model includes: a barrel assembly 10, a head assembly 20, a delivery assembly 30, a die plate 40 and a first roller 50, wherein the barrel assembly 10 has a feed channel 11 for delivering the sizing material; the head assembly 20 is connected to the barrel assembly 10, the head assembly 20 has a flow passage 21 communicating with the feed channel 11, and an extrusion port 22 is provided at an end of the flow passage 21 remote from the feed channel 11, so that the rubber can enter the flow passage 21 through the feed channel 11 and be extruded from the extrusion port 22. At least a portion of the head assembly 20 is movable relative to the barrel assembly 10, the delivery assembly 30 has a delivery screw 31, the delivery screw 31 extends from an end of the barrel assembly 10 remote from the head assembly 20 into the feed channel 11 and into the flow channel 21, and the delivery screw 31 is rotatable relative to the barrel assembly 10 and the head assembly 20 so that the size can be delivered from one side of the barrel assembly 10 to the side of the extrusion port 22 via the delivery screw 31; die plate 40 is disposed over extrusion port 22; the first roller 50 is rotatably provided at the extrusion port 22, the first roller 50 is disposed opposite to the die plate 40, and the pressure in the flow path 21 varies with the rotational speed of the conveyor screw 31 and the first roller 50.

When the extrusion device is used, rubber material enters a feeding channel 11 positioned in a machine barrel from one end of a machine barrel assembly 10, a conveying screw 31 is arranged in the feeding channel 11, the conveying screw 31 extends into the feeding channel 11 from one end of the machine barrel assembly 10 away from a machine head assembly 20 and enters a flow channel 21, and the conveying screw 31 can rotate relative to the machine barrel assembly 10 and the machine head assembly 20, so that the rubber material can be conveyed from one side of the machine barrel assembly 10 to one side of an extrusion outlet 22 through the conveying screw 31; the gum material is fed into the flow channel 21 through the feed channel 11 by means of the conveyor screw 31 and finally extruded from the extrusion opening 22 at the end of the flow channel 21 remote from the feed channel 11. Further, by providing the die plate 40 on the extrusion port 22, the gum material can be extruded in a specific shape; since the first roller 50 is rotatably disposed at the extruding port 22 and the first roller 50 is disposed opposite to the die plate 40, the sizing material can be shaped and extruded from the die plate 40 under the pushing of the conveying screw 31 and the traction of the first roller 50 along with the rotation of the first roller 50 after being extruded to the die plate 40 and the first roller 50. The speed of the sizing material leaving the die plate 40 is synchronous with the speed of the first roller 50, the pressure tends to be zero, the pressure and the temperature of the sizing material in the flow channel 21 of the machine head assembly 20 are low, the product has small reduction of area deformation and stable area size. Meanwhile, since the other parts of the runner 21 except the feeding port and the extrusion port 22 form a closed space in the conveying process of the sizing material in the runner 21, the pressure of the closed space in the runner 21 can be controlled by changing the feeding speed of the conveying screw 31 and the discharging speed of the extrusion port 22, so that the pressure in the runner 21 is stabilized and fluctuated within an allowable range by controlling the rotating speeds of the conveying screw 31 and the first roller 50, the pressure stability before the material is formed can be always maintained, and the shape, the size and the weight stability of the product are ensured. Therefore, the extrusion device effectively solves the problem of unstable rubber extrusion temperature and pressure in the rubber extrusion process in the prior art.

Specifically, the feeding direction of the conveying screw 31 is perpendicular to the axial direction of the first roller 50, so that the rotation direction of the first roller 50 is the same as the conveying direction of the rubber material, forward traction force is provided for the rubber material by the rotation of the first roller 50, and finally the rubber material is extruded from the extrusion port 22 under the dual acting force of the first roller 50 and the conveying screw 31.

In one embodiment of the present utility model, the extruding device further includes a second roller 60, the second roller 60 is disposed at a side of the first roller 50 away from the extruding outlet 22, and the rubber material is conveyed downstream after passing through the first roller 50 and the second roller 60 in sequence in the extruding process, and the second roller 60 is disposed at a side of the first roller 50 away from the extruding outlet 22, so that the support is provided for the extruded rubber material, and meanwhile, the first roller 50 and the second roller 60 pull the rubber material together to move forward, so that sufficient traction force is further ensured to be provided for the rubber material. At the same time, by providing the second roller 60, the glue is prevented from being wound on the first roller 50 in the end due to the rotation of the first roller 50. Thus, the stable operation of the extrusion apparatus is effectively ensured by providing the second roller 60.

Specifically, the extrusion device further comprises a mounting frame 70 and a first driving assembly 80, the machine head assembly 20 and the first driving assembly 80 are respectively arranged on the mounting frame 70, the first driving assembly 80 is respectively in driving connection with the first roller 50 and the second roller 60, the first roller 50 and the second roller 60 can be simultaneously controlled by controlling the first driving assembly 80, the control mode is simpler, and equipment maintenance in the using process are facilitated.

The first roller 50 and the second roller 60 may be disposed at intervals, the first roller 50 and the second roller 60 may be parallel to each other, and the diameter of the first roller 50 may be larger than the diameter of the second roller 60. For example, as shown in fig. 6, the first driving assembly 80 may include a driving motor 81, a coupling 82, a driving sprocket 83, a driven sprocket 84, and a chain 85, wherein an output shaft of the driving motor 81 and a rotating shaft of the first roller 50 are connected through the coupling 82, so that the driving motor 81 can drive the first roller 50 to rotate, the coupling 82 or the rotating shaft of the first roller 50 is fixedly connected with the driving sprocket 83, and a driven sprocket 84 is disposed on a rotating shaft of the second roller 60, and driving connection between the first roller 50 and the second roller 60 is realized through the chain 85, so that the driving motor can drive the second roller 60 to follow up while driving the first roller 50 to rotate. Of course, other mechanical transmission modes such as belt transmission and the like can be adopted to realize torque transmission between the first driving assembly 80 and the first roller 50.

In order to precisely control the pressure within the flow path 21, the extrusion apparatus further includes a pressure sensor 90, the pressure sensor 90 being disposed on the head assembly 20 and detecting the pressure of the end of the flow path 21 adjacent to the feed path 11, and the pressure sensor 90 being in signal communication with the delivery assembly 30 and the first drive assembly 80, respectively. By adjusting the conveying assembly 30 and the first driving assembly 80, the pressure in the runner 21 can be controlled by adjusting the speed of the sizing material entering the runner 21 and the extruding speed from the runner 21, so that the pressure in the runner 21 can be stabilized within P+/-a%, a% is an allowable small extruding fluctuation interval, and the pressure requirements of different products are met according to the product control interval value.

In one embodiment of the present utility model, the flow channel 21 comprises a first segment 23 and a second segment 24 connected in series, the first segment 23 being in communication with the feed channel 11, and the head assembly 20 comprising a first head 25 and a second head 26, wherein the first head 25 is connected to the barrel assembly 10 and the first head 25 has the first segment 23. The second head 26 is pivotally connected to the first head 25 and the end of the first head 25 remote from the barrel assembly 10 encloses the second section 24 with the second head 26, the arrangement being such that the second head 26 can rotate relative to the first head 25 to facilitate cleaning of the barrel and the interior of the head.

For example, the first nose 25 and the second nose 26 may be connected by a rotating shaft 27, the first nose 25 is provided with a turning cylinder 28, the front end of the turning cylinder 28 is connected with the second nose 26 by a pin, and when the glue inside the nose needs to be cleaned, the turning cylinder 28 can push the second nose 26 to rotate and open by taking the rotating shaft 27 as a rotation center. A safety oil cylinder, a mounting seat, a safety hook 29 and the like are further mounted on the side, opposite to the first roller 50, of the first machine head 25, after the second machine head 26 is opened, the safety oil cylinder extends out, the safety hook 29 swings and is inserted into a clamping groove of the second machine head 26, and the safety oil cylinder is used for carrying out safety protection after the second machine head 26 is turned over and opened, so that the second machine head 26 is prevented from being suddenly closed.

The extrusion device further comprises a runner plate 120, one end of the runner plate 120 is arranged at one end of the runner 21, which is close to the extrusion opening 22, the other end of the runner plate 120 extends out of the extrusion opening 22 and extends towards the first roller 50, and one end of the runner plate 120 extending out of the runner 21 is provided with an abutting cambered surface 121 matched with the first roller 50. Also, the extrusion device in the present utility model may have a plurality of runner plates of different sizes or different models, and can meet different production demands by using different runner plates.

Meanwhile, in order to avoid interference of the runner plate 120 to the movement of the first roller 50, one end of the runner plate 120 extending out of the runner 21 is provided with an abutting cambered surface 121 matched with the outer surface of the first roller 50, the abutting cambered surface 121 is attached to the outer surface of the first roller 50, and a gap between the abutting cambered surface 121 and the first roller 50 is smaller than a gap between the first roller 50 and the first machine head 25, so that the movement of the first roller 50 is not influenced, and the glue material is prevented from leaking from the gap between the first roller 50 and the first machine head 25. For example, the flow channel plate 120 may be fastened to the first handpiece 25 by means of a screw, and form part of the flow channel 21, and the specific shape of the flow channel plate 120 may be selected and adapted according to the actual engineering requirements.

Specifically, the extrusion device further includes two mounting plates 100, the mounting plates 100 are disposed on the head assembly 20, and two ends of the first roller 50 and two ends of the second roller 60 are respectively connected to the two mounting plates 100, for example, two ends of the first roller 50 and the second roller 60 may be rotatably connected to the mounting plates 100 through bearing assemblies; at least two heightening assemblies 110, heightening assemblies 110 are arranged on mounting frame 70, and each mounting plate 100 is respectively abutted with at least one different heightening assembly 110, so that the height of first roller 50 can be adjusted through heightening assemblies 110, and the situation that the gap between the outer surface of first roller 50 and abutting cambered surface 121 is enlarged due to abrasion to cause glue to leak from the enlarged gap is avoided.

Specifically, the elevation adjustment assembly 110 includes: the top block 111, the lead screw 112 and the thread bush 113, wherein the top block 111 is in contact with the mounting plate 100, one end of the lead screw 112 is rotatably arranged on the top block 111, the thread bush 113 is fixedly arranged on the mounting frame 70, and the thread bush 113 is in threaded connection with the lead screw 112; with such a structure, when the height of the first roller 50 needs to be adjusted, the screw 112 is rotated, so that the screw 112 and the threaded sleeve 113 rotate relatively, and the rotation is driven to move in a direction approaching or separating from the mounting plate 100.

In order to prevent the height adjustment failure caused by the mechanical abrasion between the threads due to the long-term use, the height adjusting assembly 110 further comprises a guide block 114, a wedge block 115 and a pressing part 116, wherein the guide block 114 is abutted against one side of the threaded sleeve 113 close to the top block 111, the wedge block 115 is arranged between the guide block 114 and the top block 111, the guide block 114 is provided with a guide surface matched with the wedge block 115, the pressing part 116 is arranged on the mounting frame 70, the pressing part 116 is positioned on one side of the wedge block 115 away from the first roller 50, the pressing part 116 can move along the direction close to or away from the wedge block 115, and the moving direction of the pressing part 116 is perpendicular to the axial direction of the screw 112. By means of the structure, the wedge-shaped block 115 can be pushed by the extrusion part 116, so that the wedge-shaped block 115 moves along the direction of the guide surface approaching the safety oil cylinder, and the top block 111 is driven to move towards the direction approaching the first roller 50, and the height of the first roller 50 is adjusted. Through two different height adjustment modes, multiple adjustment of the height of the first roller 50 is realized, the influence of mechanical abrasion on the height adjustment is avoided, and the service life of the equipment is prolonged.

In one embodiment of the present utility model, the extrusion apparatus further includes a first locking assembly 130, wherein the first locking assembly 130 is disposed on the head assembly 20, and at least a portion of the first locking assembly 130 is movable in a direction toward or away from the die plate 40 to lock or unlock the die plate 40, thereby facilitating replacement of the die plate 40.

Specifically, the first locking assembly 130 includes a driving portion 131, a connecting portion 132, and a locking insert plate 133. The driving part 131 is provided on the head assembly 20; the locking plugboard 133 is connected with the driving part 131 through the connecting part 132, and the locking plugboard 133 can move along the direction close to or far away from the die plate 40 to lock or unlock the die plate 40, when the die plate 40 needs to be locked or unlocked, the driving part 131 drives the locking plugboard 133 to move along the direction close to or far away from the die plate 40 through the connecting part 132, and the structure and the control mode are simpler.

For example, the driving portion 131 may be an oil cylinder, where the oil cylinder is disposed on the second machine head 26, and an output end of the oil cylinder is connected to the connecting portion 132, and the connecting portion 132 is movably connected to the locking insert plate 133 through a pin shaft, so that the locking insert plate 133 can be driven to move in a direction approaching or separating from the die plate 40 when the output end of the oil cylinder moves. In order to ensure the movement direction of the locking plugboard 133, a guide key 135 may be further disposed on the locking plugboard 133, and a guide groove for the guide key is disposed on the second machine head 26, where the guide key 135 moves in the guide groove to ensure the movement direction of the locking plugboard 133. Alternatively, the guide key 135 may be made of a graphite copper alloy material, and the action of the locking insert 133 is ensured to be free from jamming through the lubrication action of the graphite copper alloy.

In some embodiments, the first locking assembly 130 may further include a cover 134, where the cover 134 is disposed on a side of the locking insert 133 away from the head assembly 20, and the cover 134 is detachably connected to the head assembly 20, where the cover 134 can protect the internal locking insert 133 and other components.

Specifically, the extrusion device further includes at least two second locking assemblies 140, at least one second locking assembly 140 is disposed on two sides of the head assembly 20, and the second locking assembly 140 includes a pull rod 141, a driving cylinder 142, and a locking block 143. One end of the pull rod 141 is connected with the first handpiece 25; the other end of the pull rod 141 is connected with a driving oil cylinder 142; a lock block 143 is provided on the drive cylinder 142 and is movable with the drive cylinder 142 in a direction toward or away from the handpiece assembly 20 to lock or unlock the second handpiece 26.

Specifically, one end of the pull rod 141 is fixedly connected with the first machine head 25, the other end of the pull rod 141 is fixedly connected with the extending end of the driving oil cylinder 142, for example, the pull rod 141 can be in threaded connection with the extending end of the driving oil cylinder 142 through mutually matched threads, and the second locking assembly 140 is driven to move along the bottom guide rail in a direction approaching or separating from the first machine head 25 along with the extension and retraction of the driving oil cylinder 142. The upper lining plate and the lower lining plate are arranged on the first machine head 25 and the second machine head 26, the locking blocks 143 which can move along the direction which is close to or far away from the machine head assembly 20 along with the driving oil cylinders 142 are arranged on the driving oil cylinders 142, wherein the locking blocks 143 are preferably U-shaped blocks, wedge-shaped locking surfaces are arranged on the upper side and the lower side of the locking blocks 143, and when the second machine head 26 needs to be locked, the locking blocks 143 are respectively abutted with the upper lining plate and the lower lining plate of the first machine head 25 and the second machine head 26, so that the first machine head 25 and the second machine head 26 can be locked. By means of the structure, the first nose 25 and the second nose 26 are locked, a closed extrusion space is provided for the sizing material, and therefore, the accurate control of the pressure in the flow channel 21 is guaranteed.

From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

1. the technical problem that the rubber extrusion temperature and the rubber extrusion pressure are unstable in the rubber extrusion process in the prior art is effectively solved;

2. the pressure stability before the material molding is always maintained, and the shape, the size and the weight stability of the product can be ensured.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (16)

1. An extrusion apparatus, comprising:

-a barrel assembly (10), said barrel assembly (10) having a feed channel (11) for delivering a sizing material;

-a head assembly (20), the head assembly (20) being connected to the barrel assembly (10), the head assembly (20) having a flow channel (21) communicating with the feed channel (11), the flow channel (21) having an extrusion port (22) at an end remote from the feed channel (11), and at least a portion of the head assembly (20) being movable relative to the barrel assembly (10);

-a conveying assembly (30), the conveying assembly (30) having a conveying screw (31), the conveying screw (31) extending from an end of the barrel assembly (10) remote from the head assembly (20) into the feed channel (11) and into the flow channel (21), and the conveying screw (31) being rotatable relative to the barrel assembly (10) and the head assembly (20);

a die plate (40), the die plate (40) being disposed on the extrusion port (22);

the first roller (50) is rotatably arranged at the extruding opening (22), the first roller (50) is opposite to the die plate (40), and the pressure in the runner (21) changes along with the rotating speed of the conveying screw (31) and the rotating speed of the first roller (50).

2. Extrusion device according to claim 1, wherein the feeding direction of the conveyor screw (31) is perpendicular to the axial direction of the first roller (50).

3. Extrusion apparatus according to claim 1, further comprising a second roller (60), the second roller (60) being arranged on a side of the first roller (50) remote from the extrusion opening (22).

4. An extrusion apparatus as claimed in claim 3, wherein,

the first roller (50) and the second roller (60) are parallel to each other; and/or

The diameter of the first roller (50) is larger than the diameter of the second roller (60); and/or

The first roller (50) and the second roller (60) are arranged at intervals.

5. An extrusion apparatus according to claim 3, further comprising a mounting frame (70) and a first drive assembly (80), said head assembly (20) and said first drive assembly (80) being disposed on said mounting frame (70), respectively, and said first drive assembly (80) being in driving connection with said first roller (50) and said second roller (60), respectively.

6. Extrusion apparatus according to claim 5, further comprising a pressure sensor (90), said pressure sensor (90) being arranged on said head assembly (20) and detecting the pressure of the end of said flow channel (21) near said feed channel (11), and said pressure sensor (90) being in signal connection with said delivery assembly (30) and said first drive assembly (80), respectively.

7. The extrusion apparatus of claim 5, further comprising:

the two mounting plates (100) are arranged on the machine head assembly (20), and two ends of the first roller (50) and two ends of the second roller (60) are respectively connected with the two mounting plates (100);

the height adjusting assemblies (110) are arranged on the mounting frame (70), and each mounting plate (100) is respectively abutted with at least one different height adjusting assembly (110).

8. The extrusion apparatus of claim 7, wherein the elevation assembly (110) comprises:

a top block (111), wherein the top block (111) is in contact with the mounting plate (100);

a screw (112), wherein one end of the screw (112) is rotatably arranged on the top block (111);

the thread bush (113), the thread bush (113) is fixedly arranged on the mounting frame (70), and the thread bush (113) is in threaded connection with the screw rod (112).

9. The extrusion apparatus of claim 8, wherein the elevation assembly (110) further comprises:

a guide block (114), wherein the guide block (114) is abutted against one side of the threaded sleeve (113) close to the top block (111);

a wedge block (115), the wedge block (115) being arranged between the guide block (114) and the top block (111), and the guide block (114) having a guide surface cooperating with the wedge block (115);

the extrusion part (116), extrusion part (116) are arranged on the mounting frame (70), extrusion part (116) is located wedge block (115) are far away from one side of first roller (50), extrusion part (116) can be along being close to or keep away from the direction of wedge block (115), and the direction of motion of extrusion part (116) is perpendicular with the axial of lead screw (112).

10. Extrusion apparatus according to claim 1, further comprising a runner plate (120), one end of the runner plate (120) being arranged at one end of the runner (21) close to the extrusion opening (22), the other end of the runner plate (120) extending out of the extrusion opening (22) and towards the first roller (50), and one end of the runner plate (120) extending out of the runner (21) having an abutment cambered surface (121) cooperating with the first roller (50).

11. The extrusion apparatus of claim 1, further comprising a first locking assembly (130), the first locking assembly (130) being disposed on the die head assembly (20), at least a portion of the first locking assembly (130) being movable in a direction toward or away from the die plate (40) to lock or unlock the die plate (40).

12. The extrusion apparatus of claim 11, wherein the first locking assembly (130) comprises:

a driving part (131), wherein the driving part (131) is arranged on the machine head assembly (20);

a connection part (132);

the locking plugboard (133) is connected with the driving part (131) through the connecting part (132), and the locking plugboard (133) can move along the direction close to or far away from the die plate (40) so as to lock or unlock the die plate (40).

13. The extrusion apparatus of claim 12, wherein the first locking assembly (130) further comprises a cover plate (134), the cover plate (134) being disposed on a side of the locking insert plate (133) remote from the head assembly (20), the cover plate (134) being detachably connected to the head assembly (20), the connecting portion (132) comprising:

the connecting piece is respectively connected with the driving part (131) and the locking plugboard (133);

and the pin shaft extends into the locking plugboard (133) from one side of the locking plugboard (133) away from the machine head assembly (20) and is connected with the connecting piece.

14. Extrusion apparatus according to any one of claims 1 to 13, wherein the flow channel (21) comprises a first section (23) and a second section (24) connected in sequence, the first section (23) being in communication with the feed channel, the head assembly comprising:

-a first head (25), said first head (25) being connected to said barrel assembly, and said first head (25) having said first section (23);

the second machine head (26) is pivotally connected with the first machine head (25), and one end, away from the machine barrel assembly, of the first machine head (25) and the second machine head (26) enclose the second section (24).

15. Extrusion apparatus according to claim 14, further comprising at least two second locking assemblies (140), at least one of said second locking assemblies (140) being provided on each side of said head assembly, said second locking assemblies (140) comprising:

a pull rod (141), wherein one end of the pull rod (141) is connected with the first machine head (25);

the other end of the pull rod (141) is connected with the driving oil cylinder (142);

the locking block (143) is arranged on the driving oil cylinder (142) and can move along the direction of approaching or separating from the driving oil cylinder (142) to lock or unlock the second machine head (26).

16. Extrusion apparatus according to claim 15, wherein the locking block (143) is a U-shaped block, the locking block (143) being in abutment with the first head (25) and the second head (26), respectively, when the locking block (143) locks the second head (26).