JP7360300B2 - extrusion equipment - Google Patents

Description

Embodiments of the present invention relate to extrusion devices.

In the tire molding process, many methods have been proposed in which tire components are prepared in parallel using a plurality of drums and transfer devices. Specifically, the process of creating the layer containing the carcass, the process of creating the layer containing the belt, and the process of integrating these into a tire shape (shaping) are performed in separate stages, and the steps between the processes are This method uses a transfer device to transfer parts.

In this type of molding process, a method is known in which tire constituent members are supplied and molded using an extrusion device. For example, in the tire molding apparatus described in Patent Document 1, rubber members such as an inner liner, Chehar, tread rubber, and sidewall rubber are molded by wrapping a band-shaped rubber strip extruded from an extrusion device.

Regarding such an extrusion device, Patent Document 2 discloses an extruder that kneads rubber and extrudes it from a discharge port, and a gear pump connected to the discharge port. Alternatively, it is described that space saving can be realized by arranging the extruder in the space below the cylinder part of the extruder.

By the way, in this type of molding process, especially when performing high-mix, low-volume production, it is necessary to frequently change materials. In this case, if the extruder is a single unit, the rubber inside the extruder can be discharged by operating the extruder with the supply of rubber as a material stopped, and the material can be changed relatively easily.

However, in an extrusion apparatus 100 that includes a gear pump 106 between an extruder 102 and a nozzle 104 as shown in FIG. The rubber in that area cannot be sent to the gear 110, and the rubber in that area is not discharged. That is, since the rubber in this portion will not be sent beyond the inlet of the gear pump 106 unless there is back pressure, the rubber will remain between the screw 112 and the gear 110 of the extruder 102.

In this case, it is conceivable to supply the rubber, which is the material to be replaced, to an extruder and to extrude and discharge the remaining rubber that has remained together with the rubber. However, since rubber cannot be distinguished at a glance, it is difficult to determine when the material has changed, and if residual rubber remains in the device and is discharged over time, it is difficult to detect that it has been mixed into the material to be replaced. There may be problems such as not being able to do so.

Therefore, each time the material is changed, the gear pump and extruder must be separated and cleaned. However, when attaching the gear pump to the extruder by simply fastening and fixing it using bolts and nuts, for example, the work of separating the gear pump and the extruder is complicated. Specifically, when pulling the gear pump forward from the extruder, that is, separating the gear pump in the direction of the screw axis to remove the accumulated rubber, the bolts and nuts are removed and the gear pump is temporarily supported using a crane or a separate support stand. The work is complicated.

International Publication No. 2006/048924 JP2014-046646A

The embodiments of the present invention have been made in view of such problems, and an object of the present invention is to facilitate material changes in an extrusion device equipped with a gear pump.

An extrusion device according to an embodiment of the present invention includes a rubber feeder having a discharge port for discharging rubber at an outlet portion, and a gear pump attached to the outlet portion of the rubber feeder. The gear pump body includes a gear pump body having a pair of built-in gears, and an electric motor, and the gear pump body is configured to rotate about a vertical axis arranged at one end in the width direction with respect to the outlet portion of the rubber feeder. It is rotatably mounted.

In one embodiment, the extrusion device includes a fastening structure for fixing the gear pump main body to the rubber supply machine, and the fastening structure is rotatably attached to one of the gear pump main body and the rubber supply machine. a flange provided on the other of the gear pump main body and the rubber feeder and having a receiving recess for receiving the shaft portion of the hinge bolt; and a flange that is threadedly engaged with the shaft portion of the hinge bolt. and a nut for fixing the flange.

In one embodiment, the electric motor may be provided below the gear pump body.

In one embodiment, the electric motor may be held by the gear pump main body and rotatably provided together with the gear pump main body.

In one embodiment, the gear pump includes a coupling part that connects the gear of the gear pump main body and the output shaft of the electric motor, and the gear pump main body includes a flange at an attachment end to the rubber feeder, and the flange may include a holding part that holds the electric motor.

In one embodiment, the coupling portion may include a flexible shaft joint.

In one embodiment, a slide mechanism may be provided for moving the gear pump body forward with respect to the outlet portion together with the vertical shaft.

A gear pump according to an embodiment of the present invention is a gear pump that is attached to an outlet section of a rubber supply machine having a discharge port for discharging rubber at the outlet section, and includes a gear pump main body in which a pair of gears are built-in, and the gear pump main body. a mounting member fixed to the rubber feeder for mounting the pump to the outlet portion, and the gear pump body are rotatable about a vertical shaft disposed at one end in the width direction with respect to the mounting member. and a connecting hinge section.

According to the embodiment of the present invention, since the gear pump body is rotatably attached to the outlet of the rubber feeder around a vertical axis, for example, when changing materials, the gear pump body can be moved horizontally. You can open the inside by rotating it. Therefore, the interior can be easily cleaned and materials can be easily replaced.

Side view of the extrusion device according to the first embodiment Front view of the extrusion device Cross-sectional view of the same extrusion device (cross-sectional view taken along line III-III in Figure 2) A perspective view of the same extrusion device with the gear pump closed. Perspective view of the same extrusion device with the gear pump open (a) Plan view, (b) Front view, (c) Side view showing the flange of the gear pump. (a) sectional view taken along line AA in Figure 2, (b) sectional view taken along line BB in Figure 2 Front view of the extrusion device according to the second embodiment Enlarged side view of the main parts of the extrusion device Rear view of the gear pump of the same extrusion device (however, part of the hinge part is shown in cross section) Side view showing the gear pump of the same extrusion device slid forward A conceptual plan view showing the gear pump of the same extrusion device in an open state. Cross-sectional view of a conventional extrusion device

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 4, the extrusion device 10 according to the first embodiment is a rubber extrusion device for kneading rubber G and extrusion molding a long rubber strip GS. The extrusion device 10 includes an extruder 12 that kneads and extrudes rubber G, a gear pump 14 connected to the extruder 12, and a mouthpiece 16 that discharges the rubber G sent out from the gear pump 14.

The extruder 12 drives a hopper 18 into which rubber G as a material is input, a screw 20 that feeds the rubber G forward while applying heat, a cylindrical cylinder part 22 that houses the screw 20, and the screw 20. A drive device 24 is provided. The extruder 12 is supported on the floor F via a support stand 25.

As shown in FIG. 3, a discharge port 26 for discharging the kneaded rubber G is provided on the downstream side of the cylinder portion 22. The discharge port 26 is provided on the downstream end surface of the extruder 12, and therefore, the downstream end serves as the outlet section 28 of the extruder 12. The rubber G input from the hopper 18 is kneaded by the screw 20 rotating within the cylinder section 22 and sent downstream, and is continuously extruded from the discharge port 26.

The gear pump 14 is attached to the outlet section 28 of the extruder 12, and sends out the rubber G discharged from the extruder 12 toward the mouthpiece 16 while controlling the amount of the rubber G to be delivered. The gear pump 14 includes a gear pump body 30 and an electric motor 32 provided below the gear pump body 30. Specifically, the electric motor 32 is connected below the gear pump main body 30 and is held by the gear pump main body 30. In this example, the gear pump 14 further includes a reducer 34 , and the electric motor 32 is connected to the gear pump main body 30 via the reducer 34 . Therefore, the gear pump 14 includes a gear pump main body 30, a reduction gear 34 connected below the gear pump main body 30, and an electric motor 32 connected below the reduction gear 34.

The gear pump main body 30 includes a rectangular parallelepiped-shaped casing 36 and a pair of gears 38 and 40 built into the casing 36 and meshing with each other. A chamber 42 through which the rubber G flows is provided inside the casing 36. The chamber 42 includes a gear chamber 44 containing a pair of gears 38 and 40, an inlet 46 into which the rubber G from the extruder 12 flows, and an outlet 48 through which the rubber G sent out by the pair of gears 38 and 40 is discharged. Equipped with. The gear pump main body 30 is fixed to the cylinder portion 22 with the inlet 46 of the chamber 42 aligned with the discharge port 26.

The mouthpiece 16 is attached to the front surface of the gear pump main body 30 where the outlet 48 of the chamber 42 is provided, and forms the rubber G discharged from the outlet 48 into a predetermined cross-sectional shape as a rubber strip GS.

The pair of gears 38 and 40 are respectively provided on a pair of left and right vertical rotating shafts 50 and 52, and rotate so as to mesh with each other. Note that the type of gear (shape of tooth trace), tooth profile, etc. are not particularly limited.

The pair of rotating shafts 50 and 52 are rotatably supported by the casing 36. A rotation shaft 50 of one gear 38 extends downward from the bottom surface of the casing 36 and is a drive shaft rotationally driven by the electric motor 32. The rotating shaft 52 of the other gear 40 is a driven shaft rotatably supported by the casing 36 . When the rotating shaft 50, which is a driving shaft, is rotationally driven, the pair of gears 38 and 40 rotate in opposite directions, and the rubber G in the chamber 42 can be pumped from the inlet 46 to the outlet 48.

The gear pump 14 includes a coupling portion 54 that connects the gear 38 of the gear pump main body 30 and the output shaft of the electric motor 32. Specifically, the lower end of the rotating shaft 50 of the gear 38 on the drive side extends to a coupling portion 54, and is connected to the output shaft of the electric motor 32 via the reducer 34 at the coupling portion 54. That is, the rotating shaft of the electric motor 32 is connected to the reducer 34 located above the electric motor 32, and the output shaft thereof is connected to the rotating shaft 50 of the gear 38 at the coupling portion 54.

As the electric motor 32, reduction gear 34, and coupling part 54, known configurations can be adopted. For example, a servo motor is used as the electric motor 32, and a servo motor reduction gear is used as the reduction gear 34. In this example, the coupling portion 54 includes a flexible shaft coupling 56, which allows the extrusion device 10 to be made compact.

As shown in FIG. 2, the flexible shaft joint 56 includes a first joint main body 56A on the gear 38 side and a second joint main body 56B on the electric motor 32 side. The second joint main body 56B is fixed to the rotating body of the reducer 34 and rotationally driven by the electric motor 32. The first joint main body 56A is connected to the second joint main body 56B while allowing deviations such as eccentricity and declination, and is rotationally driven by the rotation of the second joint main body 56B. The rotation shaft 50 of the gear 38 enters the hollow part of the first joint body 56A and is connected thereto, and is rotationally driven by the rotation of the first joint body 56A.

As shown in FIGS. 4 and 5, the gear pump main body 30 is rotatably attached to the outlet section 28 of the extruder 12 about a vertical shaft 58 disposed at one end in the width direction. Specifically, a hinge portion 60 that rotates about a vertical shaft 58 is provided at one end of the left and right sides of the rectangular outlet portion 28, and the gear pump main body 30 It is attached to the extruder 12 via the extruder 12 so as to be openable and closable.

In this example, the gear pump 14 is provided with a gear pump main body 30, a mounting member 61 fixed to the extruder 12 in order to attach the gear pump main body 30 to the outlet portion 28, and a connecting portion between the gear pump main body 30 and the mounting member 61. and a hinge portion 60 that rotatably supports the gear pump main body 30.

As shown in FIGS. 3 and 5, the attachment member 61 is attached to the outlet section 28 of the extruder 12, and its peripheral edge extends radially outward at the front end of the cylinder section 22 through a flange 62 (hereinafter referred to as (Also referred to as the flange 62 on the extruder 12 side.) The mounting member 61 has a rectangular plate shape with an opening in the center for receiving the discharge port 26 of the extruder 12, and therefore the flange 62 has a rectangular outer shape. The mounting member 61 is fixed to the extruder 12 using bolts or the like (not shown), and in the fixed state, the mounting member 61 forms the exit surface of the extruder 12.

The gear pump body 30 includes a radially outwardly projecting flange 64 at the end for attachment to the extruder 12 . The flange 64 has a rectangular outer shape that overlaps the flange 62 on the extruder 12 side. In this example, the casing 36 of the gear pump body 30 is secured to the outlet section 28 of the extruder 12 via a flange 64.

A first hinge portion 60B having an insertion hole through which the hinge shaft 60A is inserted is provided at one end of the flange 62 of the mounting member 61. At one end of the flange 64 of the gear pump main body 30, a pair of upper and lower second hinge portions 60C having an insertion hole through which the hinge shaft 60A is inserted is provided. The hinge portion 60 is constructed by inserting and assembling a hinge shaft 60A having the vertical shaft 58 as its axis through the first hinge portion 60B and the second hinge portion 60C.

Note that the configuration of the hinge portion is not limited to this. For example, a protrusion provided on either the extruder side or the gear pump main body side may be the vertical axis, and the protrusion may be provided on the other side. A bearing may be provided to support the device rotatably around the vertical axis.

The gear pump main body 30 is fixed to the outlet section 28 so as to cover the outlet surface of the extruder 12. In this example, a hinge bolt 68 is used as the fastening structure 66 for fixing the gear pump main body 30 to the outlet portion 28. Fastening structures 66 using hinge bolts 68 are provided at the four corners of the rectangular outlet surface, that is, at each corner.

In detail, as shown in FIGS. 2, 7(a) and 7(b), the fastening structure 66 connects hinge bolts 68 provided at the corners of the flange 62 on the extruder 12 side and the flange of the gear pump main body 30. 64 and a nut 72.

The hinge bolt 68 is rotatably provided around a pin 74 provided on the flange 62 . The pin 74 is arranged in a direction perpendicular to the diagonal line of the rectangular flange 62 as shown in FIG. The hinge bolt 68 is provided so as to be rotatable outward from a direction parallel to the axial direction (same as the axial direction of the screw 20) (that is, in a direction in which the tip of the hinge bolt 68 moves away from the axis of the extruder 12).

The receiving recess 70 is a recess provided to receive the shaft portion 68A of the hinge bolt 68, and has a U shape that opens outward, that is, in the radial direction, at each corner of the rectangular flange 64. It is formed by cutting out a letter shape.

The nut 72 is a member that fixes the flange 64 by screwing into the thread of the shaft portion 68A of the hinge bolt 68, and the nut 72 is tightened with the shaft portion 68A of the hinge bolt 68 received in each receiving recess 70. As a result, the flange 64 of the gear pump main body 30, which is sandwiched between the flange 62 provided with the hinge bolt 68 and the nut 72, is fixed.

As shown in FIG. 5, the length of the shaft portion 68A of the hinge bolt 68 is such that when the shaft portion 68A of the hinge bolt 68 is unfastened by the nut 72 and the hinge bolt 68 is rotated to remove the shaft portion 68A from the receiving recess 70, The length is set to such an extent that the hinge bolt 68 can be rotated while the hinge bolt 72 is screwed onto the tip of the shaft portion 68A.

A flange 64 interposed between the casing 36 of the gear pump main body 30 and the outlet portion 28 of the extruder 12 includes a holding portion 76 that holds the electric motor 32. The electric motor 32 is held on the gear pump main body 30 by the holding portion 76 . In detail, as shown in FIGS. 4 and 5, the flange 64 is connected to a rectangular plate-shaped main body 78 interposed between the casing 36 and the outlet part 28, and extends forward from the lower end of the main body 78. and a holding section 76.

As shown in FIGS. 6(a) to 6(c), the main body portion 78 of the flange 64 is provided with an opening 78A in the center thereof, which corresponds to the inlet 46 of the casing 36. As shown in FIGS. A receiving recess 70 is provided at each corner of the main body portion 78 . A pair of upper and lower second hinge parts 60C, 60C that constitute the hinge part 60 are provided at one end in the width direction of the main body part 78.

The holding portion 76 of the flange 64 extends below the casing 36 in parallel to the bottom surface of the casing 36, as shown in FIGS. 1 and 4. The holding portion 76 is provided with a circular opening 76A surrounding the outer periphery of the coupling portion 54.

As shown in FIG. 2, the electric motor 32 is fixed to the holding part 76 via the reducer 34, so that the holding part 76 holds the electric motor 32. Specifically, the reducer 34 connected and integrated with the upper surface of the electric motor 32 is fixed to the lower surface of the holding portion 76 by fastening with bolts 80. As a result, the electric motor 32, the speed reducer 34, and the coupling part 54 (specifically, the second joint main body 56B) are fixed to the holding part 76 and are held in a suspended state from the holding part 76.

In the extrusion device 10 of this embodiment configured as described above, the gear pump body 30 is rotatably attached to the outlet portion 28 of the extruder 12 about the vertical shaft 58, so that the gear pump body 30 can be rotated from the state shown in FIG. As shown in FIG. 5, the main body 30 can be rotated horizontally toward the front (that is, forward) to open the interior, and in this state, the retained rubber can be removed. Therefore, when changing the material, for example, the connecting portion between the extruder 12 and the gear pump 14 can be easily cleaned, and the material can be changed easily.

Further, since the gear pump main body 30 is fastened to the extruder 12 by the hinge bolt-nut structure using the hinge bolt 68 and the nut 72, the work of fastening the gear pump main body 30 to the extruder 12 can be easily performed.

Specifically, to release the fastening from the state shown in FIG. 4, it is sufficient to loosen the nut 72 and rotate the hinge bolt 68 outward about the pin 74 as shown in FIG. . In addition, when fastening from the state shown in FIG. 68A of the flange 64, and screw the nut 72 onto the shaft 68A and tighten it. At this time, with a typical bolt-nut structure, the bolts and nuts may fall. In contrast, according to the present embodiment, the nut 72 can be unfastened while attached to the tip of the shaft portion 68A of the hinge bolt 68, and the gear pump main body 30 can be rotated. It is also possible to prevent the nut 72 from falling.

Further, in this embodiment, since the electric motor 32 is provided below the gear pump main body 30, it is possible to effectively utilize space and save space.

Further, in this embodiment, the electric motor 32 is held by the gear pump main body 30 and is configured to be rotatable together with the gear pump main body 30. Specifically, the gear pump 14 including the gear pump main body 30 and the electric motor 32 connected below the gear pump main body 30 is horizontally rotatable. Since it rotates in the horizontal direction, the heavy gear pump 14 can be rotated and opened with a small force, and the gear pump 14 can be easily held in the open state. Therefore, the burden on the worker can be reduced.

According to the present embodiment, in a device that is provided with a coupling portion 54 that connects the gear 38 of the gear pump body 30 and the output shaft of the electric motor 32, a holding portion 76 that holds the electric motor 32 is attached to the flange 64 of the gear pump body 30. With this provision, the electric motor 32 can be suspended and held relative to the gear pump main body 30 even though it has the coupling portion 54 . Therefore, the gear pump main body 30 can be rotated and opened together with the electric motor 32, and the opening/closing operation of the gear pump 14 can be prevented from being hindered.

Further, since the coupling portion 54 is constituted by the flexible shaft joint 56, the entire extrusion device 10 can be made compact.

8 to 12 are diagrams showing an extrusion device 10A according to the second embodiment. The extrusion device 10A differs from the extrusion device 10 according to the first embodiment in that it is provided with a slide mechanism 82 that moves the gear pump main body 30 forward with respect to the outlet portion 28 together with the vertical shaft 58. That is, as shown in FIG. 12, the extrusion device 10A is configured so that the gear pump main body 30 can be pulled out and rotated.

The slide mechanism 82 is provided at the hinge portion 60. Specifically, the first hinge portion 60B is provided to be slidable in the front-rear direction relative to the mounting member 61. As shown in FIG. 9, the first hinge portion 60B is formed in a block shape that extends rearward and extends in the front-rear direction. As shown in FIGS. 9 to 11, the flange 62 of the mounting member 61 is provided with an engagement groove 84 that slidably supports the first hinge portion 60B in the front-rear direction. In this way, the slide mechanism 82 is configured to include the first hinge portion 60B and the engagement groove 84.

Further, in order to regulate the amount of sliding, the first hinge portion 60B is provided with an elongated hole 86 extending in the front-rear direction, and the flange 62 is provided with a regulating protrusion 88 that is inserted into the elongated hole 86 with a bolt. Then, as the first hinge portion 60B slides back and forth, the position of the regulating protrusion 88 within the elongated hole 86 is displaced, and thereby the sliding amount of the first hinge portion 60B changes depending on the length of the elongated hole 86 in the front and rear direction. It is becoming regulated.

In the extrusion device 10A of the second embodiment, by providing the slide mechanism 82, the gear pump main body 30 can be pulled out forward together with the vertical shaft 58, as shown in FIGS. 11 and 12. In this example, the gear pump main body 30 is configured to be able to slide forward and backward together with the flange 64, and since the electric motor 32 and reduction gear 34 are held on the gear pump main body 30 via the flange 64, they can be moved forward together. It can be pulled out.

Therefore, in the extrusion device 10A, as shown in FIG. 11, the fastening by the fastening structure 66 is released by loosening the nut 72 and rotating the hinge bolt 68 (arrow A1), and then the gear pump 14 is moved forward. It is pulled out and separated in the direction of the screw axis of the extruder 12 (arrow A2). Thereafter, as shown in FIG. 12, the gear pump 14 can be rotated horizontally to open the inside, and the accumulated rubber can be removed. This configuration is effective when there is no space left or right on the front side of the extruder 12, and by once pulling it out to the front, it is possible to secure a space for horizontal rotation.

Note that the slide mechanism 82 is not limited to the above configuration, and various slide mechanisms may be employed as long as the gear pump main body 30 can be pulled out toward the front.

Regarding the extrusion device 10A of the second embodiment, other configurations and effects are basically the same as those of the extrusion device 10 according to the first embodiment, and the explanation thereof will be omitted.

In the first and second embodiments, the extruder 12 is used as a rubber supply machine for supplying rubber to the gear pump 14, but it is not limited to an extruder as long as it can supply rubber, for example, an injection A machine may also be used.

Moreover, although the case has been described in which the pair of gears 38 and 40 of the gear pump 14 have vertical rotating shafts 50 and 52, the present invention may also be applied to a case in which a pair of horizontal rotating shafts are arranged above and below.

Furthermore, although a case has been described in which the electric motor 32 is held below the gear pump main body 30, the present invention is not limited to this. For example, the electric motor may be held above or to the side of the gear pump main body.

Furthermore, although a case has been described in which the electric motor 32 is connected and integrated below the reduction gear 34, the electric motor may be connected to the side surface of the reduction gear. For example, a gear pump may be connected to the side surface of the gear pump body via a speed reducer connected to the bottom surface of the gear pump body (here, the term "side surface" is used to include not only both the left and right sides, but also the front and rear surfaces). Good too. In other words, when the electric motor is installed below the gear pump main body, it is not necessary to install the electric motor directly below the gear pump main body. may be placed in

Further, a hinge bolt 68 is provided on the extruder 12 side, and a flange 64 having a receiving recess 70 is provided on the gear pump main body 30 side, but instead of this, a hinge bolt is provided on the gear pump main body side, and a receiving recess 70 is provided on the gear pump main body side. A recess may also be provided.

Further, although the flange 64 of the gear pump main body 30 is constructed as a separate member from the casing 36, they may be formed integrally. That is, a flange portion integrally projecting radially outward may be provided at the rear end portion of the casing 36, and the above-mentioned receiving recess 70 and the second hinge portion 60C may be provided on this flange portion.

The extrusion device of this embodiment can be suitably used as an extrusion device for molding tire constituent members in a tire molding device, but is not limited to this, and can be used in various extrusion devices that extrude rubber. Can be used.

Although several embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included within the scope and gist of the invention as well as within the scope of the invention described in the claims and its equivalents.

10, 10A... Extrusion device, 12... Extruder (rubber feeder), 14... Gear pump, 26... Discharge port, 28... Outlet section, 30... Gear pump main body, 32... Electric motor, 38, 40... Gear, 50, 52... Rotating shaft, 54... Coupling part, 56... Flexible shaft joint, 58... Shaft, 64... Flange, 66... Fastening structure, 68... Hinge bolt, 70... Receiving recess, 72... Nut, 76... Holding part, 82... slide mechanism

Claims (7)

An extrusion device comprising: a rubber feeder having an outlet for discharging rubber; and a gear pump attached to the outlet of the rubber feeder,
The gear pump includes a gear pump main body having a pair of built-in gears, and an electric motor, and the gear pump main body has a vertical shaft disposed at one end in the width direction with respect to the outlet section of the rubber supply machine. Rotatably attached to the center ,
An extrusion device, wherein the electric motor is held by the gear pump main body and is rotatably provided together with the gear pump main body . A fastening structure for fixing the gear pump main body to the rubber supply machine, the fastening structure including a hinge bolt rotatably provided on one of the gear pump main body and the rubber supply machine, and the gear pump main body and a flange provided on the other of the rubber feeders and having a receiving recess for receiving the shaft of the hinge bolt, and a nut that is screwed onto the shaft of the hinge bolt to fix the flange. The extrusion device according to claim 1, comprising: An extrusion device comprising: a rubber feeder having an outlet for discharging rubber; and a gear pump attached to the outlet of the rubber feeder,
The gear pump includes a gear pump main body having a pair of built-in gears, and an electric motor, and the gear pump main body has a vertical shaft disposed at one end in the width direction with respect to the outlet section of the rubber supply machine. Rotatably attached to the center ,
The gear pump includes a coupling part that connects the gear of the gear pump main body and the output shaft of the electric motor, and the gear pump main body includes a flange at an attachment end to the rubber feeder, and the flange connects the electric motor. An extrusion device comprising a holding part for holding . 4. The extrusion device of claim 3 , wherein the coupling portion comprises a flexure joint. The extrusion device according to any one of claims 1 to 4 , wherein the electric motor is provided below the gear pump main body. The extrusion device according to any one of claims 1 to 5 , comprising a slide mechanism that moves the gear pump main body forward with respect to the outlet portion together with the vertical shaft. A gear pump that is attached to the outlet part of a rubber supply machine having a discharge port for discharging rubber at the outlet part,
A gear pump body with a built-in pair of gears,
a mounting member fixed to the rubber feeder for mounting the gear pump body to the outlet portion;
a hinge portion rotatably connecting the gear pump main body to the mounting member about a vertical shaft disposed at one end in the width direction;
an electric motor held by the gear pump body and rotatable together with the gear pump body;
Gear pump with.

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