阅读说明：本技术 垫胶挤出方法 (Cushion rubber extrusion method ) 是由 施晓路 王学东 许美华 刘伟彬 王少朋 于慧 于 2021-08-27 设计创作，主要内容包括：本发明公开一种垫胶挤出方法,属于垫胶生产相关技术领域,包括将垫胶原材料塑化挤出的机筒,以及用于承载与固定机筒的机台,机筒中设有用于将垫胶原材料螺旋推送的推送螺杆,推送螺杆的左端连接有用于驱动推送螺杆转动的传动机构,通过在加料斗中设置由十字支撑杆支撑固定的导向筒,导向筒的外壁与加料斗内壁之间形成环形的排料通道,在当机筒内部气压升高后,活塞体受到气压作用而向上滑动,推动螺纹杆同步运动,通过螺纹杆与旋转套的螺纹关系,螺纹杆运动的过程中旋转套能够对应转动,通过导向筒外壁上凸轮与转盘的啮合作用,转盘以固定杆为中心轴转动,并由转盘外侧面上的拨料板对排料通道中堵塞的原材料进行拨动疏导,机筒内部气压恢复正常。(The invention discloses a cushion gum extrusion method, which belongs to the related technical field of cushion gum production and comprises a cylinder for plasticizing and extruding cushion gum raw materials and a machine table for bearing and fixing the cylinder, wherein a pushing screw rod for spirally pushing the cushion gum raw materials is arranged in the cylinder, the left end of the pushing screw rod is connected with a transmission mechanism for driving the pushing screw rod to rotate, a guide cylinder supported and fixed by a cross support rod is arranged in a charging hopper, an annular discharge channel is formed between the outer wall of the guide cylinder and the inner wall of the charging hopper, after the air pressure in the cylinder rises, a piston body slides upwards under the action of the air pressure to push a threaded rod to move synchronously, the rotary sleeve can rotate correspondingly in the moving process of the threaded rod through the thread relationship between the threaded rod and the rotary sleeve, and the rotary table rotates by taking a fixed rod as a central shaft through the meshing action of a cam on the outer wall of the guide cylinder and the rotary table, and the poking plate on the outer side surface of the turntable pokes and dredges the raw materials blocked in the discharge channel, and the air pressure in the machine barrel returns to normal.)

1. The cushion gum extrusion method comprises a machine barrel (5) for plasticizing and extruding cushion gum raw materials and a machine table (1) for bearing and fixing the machine barrel (5), and is characterized in that: a pushing screw (7) for spirally pushing a cushion rubber raw material is arranged in the machine barrel (5), the left end of the pushing screw (7) is connected with a transmission mechanism for driving the pushing screw (7) to rotate, the upper surface of the machine barrel (5) is connected with a feeding hopper (4) for quantitatively adding the cushion rubber raw material, and a pressure discharge assembly for balancing the pressure in the machine barrel (5) and dredging the cushion collagen material in the feeding hopper (4) is arranged in the feeding hopper (4);

the pushing screw (7) is divided into three sections, the first section is a pre-compaction mixing section, the second section is a compaction heating plasticizing section, the third section is a cooling molding extrusion section, the charging hopper (4) is positioned in the pre-compaction mixing section, a heating device is arranged on a machine barrel (5) at the compaction heating plasticizing section, and a cooling device is arranged on the machine barrel (5) at the cooling molding extrusion section;

the cushion rubber extrusion step comprises:

firstly, adding a cushion rubber raw material into a machine barrel (5) through a feeding hopper (4);

secondly, a transmission mechanism drives a pushing screw (7) in the machine barrel (5) to rotate, and the cushion rubber raw materials are continuously mixed and conveyed rightwards under the extrusion of the cushion rubber raw materials and the machine barrel (5), so that the cushion rubber raw materials are pushed to a compaction heating plasticizing section from a pre-compaction mixing section;

thirdly, the cushion rubber raw material enters a compaction heating plasticizing section, is pressed and crushed, is heated and melted at high temperature by a heating device, and enters a cooling molding extrusion section under the pushing of a pushing screw (7);

and fourthly, cooling and forming the melted cushion rubber raw material at a cooling device at a cooling forming extrusion section, and extruding the raw material out of the cylinder (5) under the pushing of the pushing screw (7) to obtain a cushion rubber finished product.

2. The cushion gum extrusion method of claim 1, wherein: the transmission mechanism comprises a motor (2) and a reduction gearbox (3), an output shaft of the motor (2) is in transmission connection with an input end of the reduction gearbox (3) through a coupler, and an output end of the reduction gearbox (3) is coaxially and fixedly connected with a pushing screw (7).

3. The cushion gum extrusion method of claim 1, wherein: the pressure-discharging assembly comprises a guide cylinder (9), a cross support rod (12) is fixedly connected to the outer wall of the guide cylinder (9), the guide cylinder (9) is fixed in the feeding hopper (4) in a hanging mode through the cross support rod (12), a piston body (10) is connected to the guide cylinder (9) in a sliding mode, a threaded rod (14) is fixedly connected to the upper end of the piston body (10), a spring (13) is arranged on the outer side of the threaded rod (14), one end of the spring (13) abuts against the piston body (10), the other end of the spring (13) abuts against the inner wall of the upper end of the guide cylinder (9), a rotating sleeve (19) is rotatably connected to the upper end of the guide cylinder (9) through a bearing, the rotating sleeve (19) is connected with the threaded rod (14) through threads, and two fixing rods (18) are symmetrically fixed to the outer wall of the rotating sleeve (19), two the other end of dead lever (18) all rotates and is connected with carousel (17), the medial surface of carousel (17) is equipped with annular tooth, the fixed cam (15) that is provided with on the upper end outer wall of guide cylinder (9), there are tooth mesh on cam (15) and carousel (17) medial surface mutually, the lateral surface fixedly connected with switch plate (16) of carousel (17).

4. The cushion gum extrusion method of claim 3, wherein: the bottom of the guide cylinder (9) is of a horn-shaped structure, and a filter membrane (11) is fixedly arranged on the inner wall of the guide cylinder.

5. The cushion gum extrusion method of claim 1, wherein: the heating device comprises a heating plate (20), and the heating plate (20) is fixedly embedded in the cylinder wall of the cylinder (5) in a cylindrical structure.

6. The cushion gum extrusion method of claim 1, wherein: the cooling device comprises a coil pipe (21), and the coil pipe (21) is fixedly embedded in the cylinder wall of the machine cylinder (5) in a spiral shape.

7. The cushion gum extrusion method of claim 1, wherein: the cooling forming extrusion machine is characterized in that a cavity for containing cooling liquid is formed in the machine table (1) at the cooling forming extrusion section, a liquid pump (8) is arranged in the cavity, the output end of the liquid pump (8) is communicated with one end of the coil (21), and the other end of the coil (21) is communicated with the cavity.

8. The cushion gum extrusion method of claim 1, wherein: the right end of the machine barrel (5) is connected with an extrusion cover (6) meeting the extrusion requirement through a bolt.

Technical Field

The invention belongs to the technical field related to cushion rubber production, and particularly relates to a cushion rubber extrusion method.

Background

The extruder is one of the types of processing machines for plastics, rubber, and the like. The material enters the extruder from the hopper, is conveyed forward under the drive of the rotation of the screw, and is subjected to the heating of the cylinder and the shearing and compression effects brought by the screw in the forward movement process to melt the material, so that the change among three states of glass state, high elastic state and viscous state is realized. Under the condition of pressurization, the material in a viscous state passes through a die with a certain shape and then becomes a continuous body with a cross section similar to the die shape according to the die. Then cooling and shaping to form a glass state, thereby obtaining the workpiece to be processed.

The existing cushion rubber extruder technology has the following problems: when the jam appears in the loading hopper, because the size of raw and other materials is less, the raw and other materials of tiny granule pile up the permeability that makes the loading hopper when one and reduce, and this moment because when the inside atmospheric pressure of barrel rose, very easily caused the injection phenomenon of raw and other materials in the loading hopper to form the waste of raw and other materials and bring the inconvenience of clearance.

Disclosure of Invention

The invention aims to provide a cushion gum extrusion method to solve the problem that material spraying is easily caused by blockage of a hopper in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the cushion gum extrusion method comprises a machine barrel for plasticizing and extruding cushion gum raw materials and a machine table for bearing and fixing the machine barrel, wherein a pushing screw rod for spirally pushing the cushion gum raw materials is arranged in the machine barrel, the left end of the pushing screw rod is connected with a transmission mechanism for driving the pushing screw rod to rotate, the upper surface of the machine barrel is connected with a feeding hopper for quantitatively adding the cushion gum raw materials, and a pressure discharge assembly for balancing the pressure in the machine barrel and dredging the cushion collagen materials in the feeding hopper is arranged in the feeding hopper;

the feeding hopper is positioned in the pre-compaction mixing section, a heating device is arranged on a machine barrel of the compaction heating plasticizing section, and a cooling device is arranged on the machine barrel of the cooling molding extruding section;

the cushion rubber extrusion step comprises:

firstly, adding a cushion rubber raw material into a machine barrel through a feeding hopper;

secondly, a transmission mechanism drives a pushing screw in the machine barrel to rotate, and the cushion rubber raw material is continuously mixed and conveyed rightwards under the extrusion of the cushion rubber raw material and the machine barrel, so that the cushion rubber raw material is pushed to a compaction heating plasticizing section from a pre-compaction mixing section;

thirdly, the cushion rubber raw material enters a compaction heating plasticizing section, is pressed and crushed, is heated and melted at high temperature by a heating device, and enters a cooling molding extrusion section under the pushing of a pushing screw;

and fourthly, cooling and forming the melted cushion rubber raw material at a cooling device at a cooling forming extrusion section, and extruding the cushion rubber raw material out of the machine barrel under the pushing of the pushing screw rod to obtain a cushion rubber finished product.

Preferably, the transmission mechanism comprises a motor and a reduction gearbox, an output shaft of the motor is in transmission connection with an input end of the reduction gearbox through a coupler, and an output end of the reduction gearbox is coaxially and fixedly connected with the pushing screw.

Preferably, the pressure-discharging assembly comprises a guide cylinder, a cross-shaped support rod is fixedly connected to the outer wall of the guide cylinder, the guide cylinder is fixed in the feeding hopper in a hanging manner through the cross-shaped support rod, a piston body is connected to the guide cylinder in a sliding manner, a threaded rod is fixedly connected to the upper end of the piston body, a spring is arranged on the outer side of the threaded rod, one end of the spring abuts against the piston body, the other end of the spring abuts against the inner wall of the upper end of the guide cylinder, a rotary sleeve is rotatably connected to the upper end of the guide cylinder through a bearing and is in threaded connection with the threaded rod, two fixing rods are symmetrically fixed to the outer wall of the rotary sleeve, the other ends of the two fixing rods are rotatably connected with a rotary table, annular teeth are arranged on the inner side face of the rotary table, a cam is fixedly arranged on the outer wall of the upper end of the guide cylinder and is meshed with the teeth on the inner side face of the rotary table, the outer side surface of the rotary table is fixedly connected with a material shifting plate.

Preferably, the bottom of the guide cylinder is of a horn-shaped structure, and a filter membrane is fixedly arranged on the inner wall of the guide cylinder.

Preferably, the heating device comprises a heating plate which is of a cylindrical structure and is fixedly embedded in the cylinder wall of the machine cylinder.

Preferably, the cooling device comprises a coil pipe, and the coil pipe is fixedly embedded in the cylinder wall of the machine cylinder in a spiral shape.

Preferably, a cavity for containing cooling liquid is arranged in the machine table at the cooling molding extrusion section, a liquid pump is arranged in the cavity, the output end of the liquid pump is communicated with one end of the coil pipe, and the other end of the coil pipe is communicated with the cavity.

Preferably, the right end of the machine barrel is connected with an extrusion cover meeting the extrusion requirement through a bolt.

Compared with the prior cushion rubber extruder technology, the cushion rubber extrusion method provided by the invention has the following beneficial effects:

1. according to the invention, the guide cylinder supported and fixed by the cross-shaped support rod is arranged in the feeding hopper, the annular discharging channel is formed between the outer wall of the guide cylinder and the inner wall of the feeding hopper, after the air pressure in the machine cylinder rises, the piston body slides upwards under the action of the air pressure to further push the threaded rod to move synchronously, the rotating sleeve can rotate correspondingly in the movement process of the threaded rod through the thread relationship between the threaded rod and the rotating sleeve, the rotating disc rotates by taking the fixed rod as a central shaft through the meshing action of the cam on the outer wall of the guide cylinder and the rotating disc, and the shifting plate on the outer side surface of the rotating disc shifts and dredges raw materials blocked in the discharging channel, so that the air pressure in the machine cylinder returns to normal;

2. according to the invention, the bottom of the guide cylinder is designed into a horn-shaped structure, the opening area of the guide cylinder is increased, and the filter membrane is arranged on the inner wall of the guide cylinder close to the bottom, so that the cushion rubber raw material can be effectively prevented from entering the guide cylinder under the action of air pressure;

3. according to the invention, the spring is arranged on the outer side of the threaded rod, one end of the spring is abutted against the piston body, the other end of the spring is abutted against the inner wall of the upper end of the guide cylinder, and after the air pressure in the machine cylinder returns to normal, the piston body is pushed back to the original position under the action of the elastic force of the spring, so that the stability of the air pressure in the machine cylinder is further maintained.

Drawings

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, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:

FIG. 1 is a schematic structural diagram of a cushion rubber extruder according to the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

FIG. 3 is an enlarged schematic view of the structure at B in FIG. 1 according to the present invention;

FIG. 4 is an enlarged schematic view of the structure of FIG. 1 at C according to the present invention;

in the figure: 1. a machine platform; 2. a motor; 3. a reduction gearbox; 4. a hopper; 5. a barrel; 6. extruding the cover; 7. pushing the screw rod; 8. a liquid pump; 9. a guide cylinder; 10. a piston body; 11. filtering the membrane; 12. a cross support bar; 13. a spring; 14. a threaded rod; 15. a cam; 16. a kick-out plate; 17. a turntable; 18. fixing the rod; 19. a rotating sleeve; 20. heating plates; 21. and (4) coiling the pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a cushion gum extrusion method comprises a machine barrel 5 for plasticizing and extruding cushion gum raw materials and a machine table 1 for bearing and fixing the machine barrel 5, wherein a pushing screw 7 for spirally pushing the cushion gum raw materials is arranged in the machine barrel 5, the left end of the pushing screw 7 is connected with a transmission mechanism for driving the pushing screw 7 to rotate, the upper surface of the machine barrel 5 is connected with a feeding hopper 4 for quantitatively adding the cushion gum raw materials, a pressure discharging assembly for balancing the pressure in the machine barrel 5 and dredging the cushion collagen materials in the feeding hopper 4 is arranged in the feeding hopper 4, the cushion gum raw materials are quantitatively added into the machine barrel 5 through the feeding hopper 4, the pushing screw 7 is driven to rotate under the driving action of the transmission mechanism, and then the materials are continuously conveyed;

the pushing screw 7 is divided into three sections, the first section is a pre-compaction mixing section, the second section is a compaction heating plasticizing section, the third section is a cooling molding extrusion section, the charging hopper 4 is positioned in the pre-compaction mixing section, a heating device is arranged on the machine barrel 5 at the compaction heating plasticizing section, a cooling device is arranged on the machine barrel 5 at the cooling molding extrusion section, the cushion rubber raw material sequentially passes through the pre-compaction mixing section, the compaction heating plasticizing section and the cooling molding extrusion section under the rotary pushing of the pushing screw 7, the raw material is continuously mixed and compressed in the pre-compaction mixing section, is extruded in the compaction heating plasticizing section and is simultaneously heated and melted at high temperature through the heating device, and is extruded after being cooled in the cooling molding extrusion section;

the cushion rubber extrusion step comprises:

firstly, adding a cushion rubber raw material into a machine barrel 5 through a feeding hopper 4;

secondly, a transmission mechanism drives a pushing screw 7 in the machine barrel 5 to rotate, and the cushion rubber raw material is continuously mixed and conveyed rightwards under the extrusion of the cushion rubber raw material and the machine barrel 5, so that the cushion rubber raw material is pushed from a pre-compaction mixing section to a compaction heating plasticizing section;

thirdly, the cushion rubber raw material enters a compaction heating plasticizing section, is pressed and crushed, is heated and melted at high temperature by a heating device, and enters a cooling molding extrusion section under the pushing of a pushing screw 7;

and fourthly, cooling and forming the melted cushion rubber raw material at a cooling device at a cooling forming extrusion section, and extruding the cushion rubber raw material out of the machine barrel 5 under the pushing of the pushing screw 7 to obtain a cushion rubber finished product.

The transmission mechanism comprises a motor 2 and a reduction gearbox 3, an output shaft of the motor 2 is in transmission connection with an input end of the reduction gearbox 3 through a coupler, an output end of the reduction gearbox 3 is in coaxial fixed connection with a pushing screw 7, the motor 2 is used as a driving force, and the pushing screw 7 is driven to rotate at a constant speed under the speed regulation of the reduction gearbox 3, so that raw materials are continuously pushed, plasticized and extruded in the machine barrel 5.

The pressure discharge assembly comprises a guide cylinder 9, a cross support rod 12 is fixedly connected to the outer wall of the guide cylinder 9, the guide cylinder 9 is suspended and fixed in the feeding hopper 4 through the cross support rod 12, an annular discharge channel is formed between the outer wall of the guide cylinder 9 and the inner wall of the feeding hopper 4, a piston body 10 is connected in the guide cylinder 9 in a sliding mode, a threaded rod 14 is fixedly connected to the upper end of the piston body 10, a spring 13 is arranged on the outer side of the threaded rod 14, one end of the spring 13 abuts against the piston body 10, the other end of the spring 13 abuts against the inner wall of the upper end of the guide cylinder 9, after the air pressure in the machine cylinder 5 is increased, the piston body 10 slides upwards under the action of air pressure to push the threaded rod 14 to move synchronously, a rotary sleeve 19 is rotatably connected to the upper end of the guide cylinder 9 through a bearing, the rotary sleeve 19 is connected with the threaded rod 14 through threads, and the rotary sleeve 19 can rotate correspondingly in the moving process of the threaded rod 14, two fixed rods 18 are symmetrically fixed on the outer wall of the rotary sleeve 19, the other ends of the two fixed rods 18 are connected with a rotary table 17 in a rotating mode, annular teeth are arranged on the inner side face of the rotary table 17, a cam 15 is fixedly arranged on the outer wall of the upper end of the guide cylinder 9, the cam 15 is meshed with the teeth on the inner side face of the rotary table 17, in the rotating process of the rotary sleeve 19, due to the meshing effect of the cam 15 and the rotary table 17, the rotary table 17 rotates by taking the fixed rods 18 as a central shaft, a material shifting plate 16 is fixedly connected to the outer side face of the rotary table 17, materials in a material discharging channel are shifted by the material shifting plate 16 in the rotating process of the rotary table 17 to be dredged, and the blocking situation is prevented.

In order to prevent the materials from entering the guide cylinder 9, the bottom of the guide cylinder 9 is of a trumpet-shaped structure, and a filter membrane 11 is fixedly arranged on the inner wall of the guide cylinder 9, the trumpet-shaped structure at the bottom of the guide cylinder 9 is designed to increase the opening area, and the filter membrane 11 is used for effectively preventing the sizing raw materials from entering the guide cylinder 9 under the action of air pressure.

Heating device includes hot plate 20, and hot plate 20 is the fixed embedding of tubular structure and locates in the section of thick bamboo wall of barrel 5, through hot plate 20 during operation production high temperature high fever, heats the cushion gum raw and other materials in barrel 5, makes it melt.

Cooling device includes coil pipe 21, and coil pipe 21 is the fixed section of thick bamboo wall of locating barrel 5 of spiral heliciform, through the coolant liquid of circulation in the coil pipe 21, absorbs the heat, and then reduces the raw and other materials temperature after melting in the barrel 5 fast, makes its rapid cooling plastify shaping.

In order to realize the circulation backward flow of coolant liquid, be equipped with the cavity that is used for holding the coolant liquid in the board 1 of cooling shaping extrusion section department, be provided with liquid pump 8 in the cavity, the output of liquid pump 8 and the one end intercommunication of coil pipe 21, the other end and the cavity intercommunication of coil pipe 21, take off through liquid pump 8 and constantly carry the coolant liquid in the cavity to coil pipe 21, flow back to the cavity after the coolant liquid absorbs the heat in the coil pipe 21, extract by liquid pump 8 again, and then realize the heat absorption cooling circulation of coolant liquid.

In order to be suitable for various production requirements, the right end of the machine barrel 5 is connected with an extrusion cover 6 meeting the extrusion requirements through bolts, and the extrusion cover 6 can be replaced by different types, so that the production process of various cushion rubber sizes is met.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.