JP2016163902A - Hybrid extrusion press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hybrid extrusion press which has a simple structure while using a mixed driving source by hydraulic pressure and electric power.SOLUTION: A hybrid extrusion press comprises: a machine base; a main cross head having an extrusion stem and sliding on the machine base; a container holder sliding on the machine base; a hydraulic main ram connected to the main cross head; and a main cylinder housing equipped with hydraulic assist cylinders which act on the container holder or the main cross head. Each of the main cross head and the container holder has an electric motor for sliding each on the machine base. A first clamp device is provided to the container holder, and a second clamp device is provided to the main cross head. The first clamp device and the second clamp device are alternately engaged with rods of the hydraulic assist cylinders.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an extrusion press for extruding an extruded material (called billet) such as aluminum or an alloy thereof, and in particular, using a hydraulic drive type and electric drive type drive source, and a main crosshead and a container holder are machine bases. The present invention relates to an extrusion press configured to freely slide on a shaft core. The present invention can be applied not only to aluminum or an alloy thereof but also to extrusion of other metal materials and synthetic resin materials.

  Extrusion is a process in which a billet placed in a hollow cylindrical container is pressed by a stem provided on the main cross head and passed through a die having a desired hole shape disposed at one end of the container on the extrusion side. It is a processing method of forming various cross-sectional shapes such as rods, shapes, pipes, etc. by extrusion. The main crosshead is driven by a hydraulic main ram provided in the main housing. The die is provided on the end platen side, and the end platen is connected to the stationary main housing by a tie rod.

  During the extrusion process, it is necessary to press the container against the die at a constant pressure, which is called “container seal”. In addition, after the extrusion process is completed, in order to cut and remove the discard, the container is retracted and a clearance between the container and the die is secured so that the shear blade can move up and down. This is called “container strip” operation.

  In such an extrusion process, Patent Documents 1 and 2 disclose operation modes of an extrusion processing apparatus that operates in a combined manner using an electric motor and hydraulic pressure. In these prior arts, the billet container (container) and the ram cross head (main cross head) are moved by electric drive until the billet hits the die, and then oil pressure is applied to the pressing ram (main ram). The extrusion by the extrusion plunger (stem) is started. The billet container is container-sealed with a tow rod on the tool set (die). After the end of extrusion, the pressure of the pressing ram is removed, and the billet container and the ram cross head are electrically driven to return to the retreat limit. Movement guidance of the billet container and the ramcross head is performed by a plurality of pressing support portions.

  In these prior arts, a filling valve is built in the rear part of the pressing ram and is composed of complicated parts, so that maintenance of parts replacement takes time. Also, since the pressing ram and tow rod have a complicated clamping device built in, the sliding material wears out, and maintenance for replacing parts must be performed frequently. Has become a long time.

Special table 2014-533202 gazette Special table 2014-532564 gazette

  In view of the above problems, the present invention provides a hybrid extrusion press that uses a hydraulic and electric mixed drive source to save energy, simplify the structure of the entire apparatus, and improve maintenance and reduce maintenance time. It is to provide.

  In order to solve the above problems, the invention of claim 1 includes a machine base (90), a main cross head (22) having an extrusion stem (24) and sliding on the machine base (90), Acting on the container holder (18) sliding on the machine base, the hydraulic main ram (12B) connected to the main cross head (22), and the container holder (18) or the main cross head (22) An electric motor comprising a main cylinder housing (12) equipped with a hydraulic assist cylinder (26), wherein the main crosshead (22) and the container holder (18) slide on the machine base (90), respectively. (60, 65), the container holder (18) is provided with a first clamping device (71X), and the main cross head (2 ) To provide a second clamping device (71Y), characterized in that engaging on the rod (50) of said alternating each hydraulic assist cylinder (26).

  In addition, the code | symbol attached | subjected above is an example which shows a corresponding relationship with the specific embodiment as described in embodiment mentioned later.

  By opening and closing the 1st and 2nd clamping devices equipped on the main crosshead and container holder, the main crosshead's forward and backward force, container seal force, and container strip force can be used properly during automatic operation. The assist cylinder can be operated. If necessary, the driving force of each electric motor can be used at the same time. In addition, the structure is simple, there are no particularly consumable parts, and maintenance performance can be improved and maintenance time can be reduced. As a result, the machine operation rate can be improved, which contributes to the improvement of the productivity of the extruded product. Furthermore, since a mixed drive source of hydraulic device type and electric drive type is used, an energy saving effect can be achieved. Since the number of use points of the hydraulic unit can be reduced, the risk of oil leakage is reduced and the working environment can be improved.

It is the top view which showed embodiment of this invention. It is sectional drawing regarding the GG line of FIG. It is sectional drawing regarding the FF line of FIG. It is explanatory drawing which shows the detail of an opening-and-closing clamp. It is a fragmentary sectional view of the discard cutting device of an embodiment of the present invention. It is explanatory drawing explaining the action | operation stroke of embodiment of this invention. It is operation | movement explanatory drawing of embodiment of this invention. It is operation | movement explanatory drawing of embodiment of this invention. It is operation | movement explanatory drawing of embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  Hereinafter, embodiments of an extrusion press apparatus according to the present invention will be described in detail with reference to the drawings. 1 to 3 are a plan view and a sectional view showing an embodiment of the present invention. FIG. 4 is an explanatory view showing details of the open / close clamp. FIG. 5 is a partial cross-sectional view of the discard cutting device according to the embodiment of the present invention. 6-9 is the figure typically shown in order to demonstrate the action | operation of the extrusion apparatus of embodiment. In FIG. 1, when viewed from the container holder 18, the die 16 side is referred to as the front, the main cylinder 12 side is referred to as the rear, and the vertical direction in the drawing is referred to as the upper and lower sides. In the embodiment, the billet is rear-loaded from the rear side of the container 18 ′.

  As shown in FIGS. 1-3, the extrusion press arrange | positions the end platen 10 and the main cylinder housing 12 facing each other, and both are connected by a plurality of tie rods 14 (two vertically here). A container 18 ′ is arranged on the main cylinder housing side of the end platen 10 with a die 16 having an extrusion hole interposed therebetween. The billet 20 is loaded into the container 18 ′ and extruded and pressed toward the die 16 to extrude a product having a cross section corresponding to the die hole 16 </ b> A (see FIG. 5). The container 18 ′ is fixed to the container holder 18.

  The main cylinder housing 12 that generates the pushing force has a hydraulic main ram 12B built in the main cylinder 12A, and is capable of being pressed and moved toward the die 16 and the container 18 '. A main cross head 22 is attached to the front end portion of the hydraulic main ram 12B, and an extrusion stem is disposed at the center of the front face portion so as to be concentric with the billet loading hole 18A of the container 18 '(axial core O). 24 is attached in a protruding state toward the container 18 '. As shown in FIGS. 2 and 3, the main crosshead 22 and the container 18 ′ are placed on a rail 91 installed in the machine base 90 and slide with respect to the axis O through a slider 92. In the present embodiment, the four tie rods 14 are not used as sliding guides.

  The extrusion stem 24 is a stem slide system, and its root portion 25 is fitted with the slide groove 27 and slides up and down on FIG. When loading the billet 20, the extrusion stem is raised upward and the billet 20 is placed behind the container 18 '. After the billet 20 is inserted into the billet loading hole 18 </ b> A by the billet loader, the extrusion stem 24 descends and becomes concentric on the shaft core O. Therefore, when the hydraulic main ram 12B is driven to advance the crosshead 22, the extrusion stem 24 is inserted into the loading hole 18A of the container 18 ′, and the rear end face of the loaded billet 20 is pressurized to press the product 20A (FIG. 5). Ex).

  A hydraulic assist cylinder 26 is attached to the main cylinder 12A on both sides in parallel with the extrusion press axis. Container seal operation, container strip operation for removing a discard by the rod 50 of the hydraulic assist cylinder 26, and The main cross head 22 moves forward until the billet tip abuts against the die end face and moves backward to the main cylinder housing 12. The first and second clamping devices 71X and 71Y provided on the container holder 18 and the main cross head 22 are alternately opened and closed, thereby allowing the main cross head to move forward and backward, and the container seal force during automatic operation. The hydraulic assist cylinder 26 is caused to act alternately on the main cross head 22 and the main cylinder housing 12 by properly using the four types of container strip force. It is not necessary to alternately open and close the first and second clamping devices 71X and 71Y on the container holder 18 and the main cross head 22 at the initial position or during manual operation. Operations of the first and second clamping devices 71X and 71Y will be described later with reference to FIGS.

  As shown in FIG. 4, the rod 50 of the hydraulic assist cylinder 26 is continuously formed with an engaging convex portion 82 having a hexagonal halved cross section. The engaging convex portion 82 is formed on the rod 50 by machining or the like. It is integrally formed. The cross-sectional shape of the engaging projection 82 is not limited to this, and may be a semicircle or an arbitrary polygon. On the other hand, in the first clamping device 71X equipped on the container holder 18 and the second clamping device 71Y equipped on the main cross head 22, tooth portions 81A and 81B are installed facing each other in the vertical direction. ing. In the tooth portions 81A and 81B, an engagement concave portion 82 'having a complementary shape with the engagement convex portion 82 is continuously provided.

  In the embodiment of FIG. 4, the tooth portions 81A and 81B of the first clamp device 71X and the second clamp device 71Y are supported by the elastic body 89 in the radial direction of the rod 50 and at the neutral position in the axial direction (left-right elastic). It is supported by elastic bodies (springs) 86A to 86D so as to float from a position where the bodies 86C and 86A are balanced. Both the first clamping device 71X and the second clamping device 71Y may have the same structure. The engaging recess 82 ′ is configured to be movable in the axial direction of the rod 50 when the engaging recess 82 ′ of the tooth portions 81 A and 81 B is closed with respect to the engaging protrusion 82 with a preload applied. Therefore, the engagement recess 82 ′ having a complementary shape with the engagement protrusion 82 can be easily fitted. When the first clamp device 71X is engaged with the rod 50, the container holder 18 can be moved forward, backward, container seal operation, or container strip operation. On the other hand, when the second clamp device 71Y is engaged with the rod 50, the main cross head 22 can be moved forward and backward. The container holder 18 is provided with a through hole 189 through which the rod 50 can pass.

  The tooth portions 81A and 81B are opened and closed by a cylinder 84. The tip of the rod 90 of the cylinder 84 is fixed to the lower tooth portion 81B. The two tie rods 85 fixed to the lower bracket 83 to which the cylinder 84 is fixed slidably penetrate the tooth portions 81A and 81B, and the upper nut of the connecting rod 85 and the upper end surface of the upper tooth portion 81A. A spring 89 as an elastic body is interposed between the upper end surface of the lower bracket 83 and the lower end surface of the lower tooth portion 81B. The tooth portions 81 </ b> A and 81 </ b> B are configured to be applied with a preload by the spring 89 in the direction in which the tooth portions 81 </ b> A and 81 </ b> B close to each other. Here, the upper and lower sides of the tooth portions 81A and 81B and the cylinder 84 have been described with the enlarged H portion on the left side of FIG. 3, but in the installation space, they may be reversed and installed as shown on the right side of FIG. When opening the upper nut and the lower nut, a stopper 72 is provided on the lower side of the lower nut to limit the stroke to half of the total stroke, so that the upper nut and the lower nut are opened to an equal length λ / 2. It has become.

  A mechanism in which the engagement concave portions 82 ′ of the tooth portions 81 </ b> A and 81 </ b> B of the first clamp device 71 </ b> X or the second clamp device 71 </ b> Y (hereinafter referred to as the clamp device here) is fitted to the engagement convex portion 82 of the rod 50 will be described. . When the clamp device is in the closed state, a command to close the clamp device is issued immediately before the rod 50 completely stops in the axial direction, that is, immediately before the stop. Then, since the tooth portions 81 </ b> A and 81 </ b> B are urged toward each other by the spring 89, they usually ride on the outer peripheral surface of the engaging convex portion 82 of the rod 50. However, since the rod 50 moves slightly in a slow-down state, the valleys of the engaging recesses 82 ′ of the tooth portions 81 </ b> A and 81 </ b> B are completely fitted into the peaks of the engaging protrusions 82 of the rod 50. When fitted, the sensor 88 detects a fitting position between the two and then issues a command to completely stop the rod 50. The inertia after the fitting of both can be absorbed by the springs 86A to 86D.

  The first clamp device 71X and the second clamp device 71Y of the embodiment of FIG. 4 may be an embodiment in which the elastic bodies 86A to 86D, 89 are not provided. Further, these clamping devices may be of a swing type.

  The extrusion press includes a variable discharge hydraulic pump (not shown) or a variable discharge hydraulic pump controlled by an inverter motor, and an opening 11 of the main cylinder 12A and a hydraulic assist cylinder via a hydraulic circuit. The hydraulic pressure is supplied to the opening 13 of 26. Although the present invention has been described as a hydraulic pressure, it can also be applied as a general fluid pressure, and the hydraulic pressure of the present invention includes the meaning of the fluid pressure.

  Next, the electric drive of the present invention will be described. As seen in FIGS. 1 to 3, an electric motor 60 is installed in the main cross head 22. As shown in FIG. 2, a gear 61 that is rotationally driven and controlled by an electric motor 60 meshes with a rack 62 that is fixed to the machine base 90 side, and electrically drives the main crosshead 22 in the direction of the axis O. Be able to. Electrical positioning is faster and more accurate than hydraulic positioning. As seen in FIG. 3, the electric motor 65 is also installed in the container holder 18. A gear 63 that is rotationally driven and controlled by the electric motor 65 meshes with a rack 64 that is fixed to the machine base 90, so that the container holder 18 can be electrically driven in the direction of the axis O.

  The discard cutting device 30 will be described below with reference to FIG. 10 is an end platen, 16 is a die. At the center of the end platen 10 and the block 17, a hole through which the product 20A extruded from the die 16 passes is provided. Reference numeral 41 denotes a billet unretained, which is a discard that is cut and separated from the product 20A. A container 18 ′ for loading a billet is supported by the container holder 18. A discard cutting device 30 is attached to the container side upper part of the end platen 10 holding the die 16 on the front side.

  In the discard cutting device 30, 31 is a fixed frame attached to the upper surface of the die 16 of the end platen 10, 32 is a shear cylinder, and 33 is a piston rod. A clevis 37 and a clevis pin 38 are attached to the tip of the piston rod 33. The clevis pin 38 is provided at the center of the upper end of the shear slide 34. A shear blade 39 for cutting and separating the discard 41 and the product 20A downward is attached to the lower end die side of the shear slide 34.

Next, the operation of the discard cutting device 30 of the present invention will be described.
First, after the extrusion of the billet is completed, as shown in FIG. 5, the container 18 ′ and the extrusion stem (not shown) are moved backward to separate the container 18 ′ from the die 16 (see also FIG. 9). On the container side end surface of the die 16, the discard 41 that is the remaining billet extrusion is left. In this state, the shear blade 39 is in the ascending limit position. Next, the shear cylinder 22 is driven and the shear blade 39 cuts the discard 41.

  Next, the extrusion process of this embodiment is demonstrated with reference to FIGS.

  In the embodiment of the present invention, in order to explain that the movement stroke (B + C) of the rod 50 of the hydraulic assist cylinder 26 and the movement stroke (B + C of FIG. 6) of the extrusion stem 24 are the same, as shown in FIG. Define dimensions B, C, and D. That is, B is a moving distance of the extrusion stem 24 from the initial position to the extrusion start position. C is a length obtained by subtracting the length D of the discard 41 from the length of the billet 20. The length of the billet 20 is C + D.

  In the present embodiment, in order to reliably return the extrusion stem 24 to the retreat limit, when the fixed dummy block 24A is deteriorated only by the output of the motor 60 mounted on the main crosshead 22, the retraction force of the main crosshead is increased. There may be a shortage. Therefore, the main crosshead 22 is retracted together with the hydraulic cylinder. By closing the second clamping device (71Y) of the main cross head 22, the rod 50 of the hydraulic assist cylinder 26 can always be returned to the retreat limit. Thereby, in the extrusion process of the present embodiment, the full stroke of the hydraulic assist cylinder 26 can be used, so that position control is facilitated. At the same time, since it is possible to sufficiently overcome the unexpected counter force caused by the deterioration of the fixed dummy block 24A during the backward movement of the main crosshead 22, smooth machine operation can be performed.

The extrusion process of this embodiment is as follows.
1. Initial position-billet loading [Fig. 7 (1)-(2)]
In the initial position, the main cross head 22, the container holder 18, and the rod 50 of the hydraulic assist cylinder 26 are all in the retreat limit, and the first clamp device 71X and the second clamp device 71Y are both open. Next, the billet 20 is loaded into the billet loading hole 18A of the container 18 ′ by the billet loader. Before the billet loading is completed, the hydraulic assist cylinder 26 is pressurized to advance the tip of the rod 50 by C + D.

2. Container advance, extrusion stem advance [Fig. 7 (2)-(3)]
When the first clamping device 71X is opened and the second clamping device 71Y is closed, the extrusion stem 24 can be driven by the hydraulic assist cylinder 26 or the electric motor 60. A fixed dummy block is attached to the front end portion of the extrusion stem. When the extrusion stem 24 is a fixed dummy block 24A that has deteriorated when inserted into the billet loading hole 18A, a certain amount of pushing force is required. Driven by both the cylinder 26 and the electric motor 60, the crosshead 22 is advanced. At this time, since the first clamping device 71X is open, the hydraulic assist cylinder 26 does not drive the container holder 18. Since the operation required to advance the container holder 18 toward the die may have a small required force, the container holder 18 is driven in advance by the electric motor 65 from the advance of the cross head 22, and the container 18 ′ moves forward toward the die 16 and moves to the container. The holder 18 and the container 18 ′ abut against the die. The billet 20 is extruded onto the extrusion stem 24, and the billet 20 comes into contact with the die 16.

3. Container seal, extrusion start [Fig. 8 (4)-(5)]
Next, the first clamping device 71X is closed and the second clamping device 71Y is opened. As a result, the hydraulic assist cylinder 26 can press the container holder 18. Here, driving of the electric motor 65 of the container holder 18 is stopped. A container seal is put on the container 18 '. At substantially the same time, pressure is applied to the hydraulic main ram 12B connected to the main cross head 22, and the extrusion stem 24 presses the rear end face of the billet 20 to start extruding the product 20A.

4). End of extrusion [Fig. 8 (6)]
The hydraulic main ram 12B is depressurized leaving the discard 41 of the billet 20, and the extrusion is completed.

5. Container strip start [Fig. 9 (7)]
When the extrusion is finished, the container strip is started, and the container holder 18 is retracted by the container strip stroke D. Hereinafter, the process from the start of container strip to the completion of container strip operation will be described.
At the start of the container strip, the first clamping device 71X remains closed and the second clamping device 71Y remains open. The state at this time is the same as the state of FIG. That is, the distal end portion of the extrusion stem 24 is further moved by the length C obtained by subtracting the length D of the discard 41 from the billet length after moving the distance B in FIG. That is, the moving distance of the extrusion stem 24 from the initial position is B + C. On the other hand, after the tip P position of the rod 50 has moved by B + C + D in FIGS. 7A to 7C, the container holder 18 does not move with the die 16 in contact. Therefore, the tip P position of the rod 50 has not moved until the container strip start of FIG. 9 (7).
The container clamping operation is performed while the first clamping device 71X is closed and the second clamping device 71Y is opened, and when completed, the container holder 18 moves backward by the distance D. In accordance with this, the tip P position of the rod 50 moves backward by D from B + C + D at the start of the container strip, so that the moving distance is B + C from the initial position.

  When the container strip operation is completed, the first clamp is opened, and subsequent container retraction for entering the shear device is performed by the motor 65 because a large required force is not required. When the container strip operation is completed, the second clamping device 71Y is switched to the closed state, and when the position of the main cross head is fixed to the rod 50, the moving distance of the pusher stem 24 (same as the moving distance of the main cross head) is the initial value. From the position, B + C and the tip P position of the rod 50 are also moved by B + C. In this state, the mutual correlation position with the position of the rod 50 with respect to the main cross head at the initial position is the same. Therefore, if the rod 50 of the hydraulic assist cylinder 26 is returned to the backward limit from this state, the same state as the initial position is obtained.

6). Container retraction, extrusion stem retraction [Fig. 9 (8)]
The electric motor 65 of the container holder 18 is driven to retract the container holder 18. When the container holder 18 is retracted by a predetermined distance, the discard is separated from the die by the discard cutting device 30. In the meantime, the main cross head 22 (extrusion stem 24) is moved backward by being driven by both the hydraulic assist cylinder 26 and the electric motor 60 while the first clamp device 71X is opened and the second clamp device 71Y is closed.

7). Return to initial position [Fig. 9 (9)]
After returning to the initial position, the first clamping device 71X is opened, the second clamping device 71Y is opened from the closed state, and the extrusion cycle is completed. In this manner, the hydraulic assist cylinder 26 can be driven rearward and the electric motor 60 can be driven to return the main crosshead 22 to the initial position at a high speed. The discard cutting device 30 operates automatically and completes its operation while the main cross head 22 is retracting.

  As described above, in this embodiment, the hydraulic assist cylinder 26 and the first clamp device 71X are opened, and the container clamp operation, the container strip operation, the container holder and the main crosshead are opened and closed by opening and closing the second clamp device 71Y. Can move forward and backward. By opening the first clamp device 71X and alternately opening and closing the second clamp device 71Y, only the hydraulic assist cylinder 26 is operated, and the container seal operation, the container strip operation, and the main crosshead advance / retreat are selectively used. I can do it. At this time, the electric motors 60 and 65 are used together as appropriate. Container sealing is possible with a hydraulic assist cylinder with the first clamping device 71X closed. In addition, the container strip is made possible by driving the electric motor 65 and the hydraulic assist cylinder 26 with the first clamping device 71X closed. Retraction of the extrusion stem 24 closes the second clamp device 71Y and uses the electric motor 60 and the hydraulic assist cylinder 26 together. At the same time, the container holder 18 drives the electric motor 65 to simultaneously retract both.

  In the present embodiment, since the container holder 18 is equipped with the electric motor 65 and the main cross head is equipped with the electric motor 60, the container holder 18 can be provided with a function of moving forward and backward at high speed and automatically during extrusion. And hydraulically driven by a hydraulic main ram connected to the main crosshead. The container seal during extrusion mainly acts on the hydraulic assist cylinder 26 provided in the main cylinder housing 12. Also, in the forward movement of the main crosshead 22 before extrusion, the container strip movement after the end of extrusion, and the backward movement of the main crosshead, if the required force is insufficient with the electric motor 65 or the electric motor 60, the hydraulic pressure is automatically set. The assist cylinder acts.

  In the present embodiment, the hydraulic assist cylinder 26 has a function of applying a ram forward force, a ram backward force, a container seal force, and a container strip force. These actions are executed by combining the first clamp device 71X and the second clamp device 71Y equipped in the container holder 18 and the main cross head 22, and a combination of mutual opening and closing and simultaneous opening and closing. By using a mixed drive source of hydraulic device type and electric drive type, energy can be saved, and at the same time, the machine operation rate is improved by improving the maintainability and reducing the maintenance time, and the machine becomes more productive. In addition, since the number of locations where the hydraulic unit is used can be reduced, the risk of oil leakage is reduced and the working environment is improved, resulting in a machine with better operability and contributing to improved productivity of extruded products.

In the above embodiment, although it demonstrated in embodiment in the case of rear loading, it is applicable also to embodiment which loaded the billet from the front of a container holder.
It should be noted that the technical scope of the present invention is not limited to the above-described embodiments, and includes those in which various modifications are made to the above-described embodiments without departing from the spirit of the present invention. That is, the specific configuration described in the embodiment is merely an example, and can be changed as appropriate.

12 Main Cylinder Housing 18 Container Holder 22 Main Crosshead 26 Hydraulic Assist Cylinder 50 Rod 71X, 71Y First Clamp Device, Second Clamp Device 60, 65 Electric Motor 90 Machine Base

Claims (5)

Machine base (90),
A main crosshead (22) having an extrusion stem (24) and sliding on the machine base (90);
A container holder (18) sliding on the machine base;
A main cylinder housing (12) equipped with a hydraulic main ram (12B) connected to the main crosshead (22) and a hydraulic assist cylinder (26) acting on the container holder (18) or the main crosshead (22). )
The main crosshead (22) and the container holder (18) each have an electric motor (60, 65) that slides on the machine base (90),
The container holder (18) is provided with a first clamping device (71X), the main crosshead (22) is provided with a second clamping device (71Y), and each of the rods of the hydraulic assist cylinder (26) alternately. 50) A hybrid extrusion press characterized by being engaged. Engage the first clamping device (71X) with the rod (50) to perform container sealing operation and container strip operation of the container holder (18),
The hybrid extrusion press according to claim 1, wherein the main clamping head (22) is moved forward or backward by engaging the second clamping device (71Y) with the rod (50).   The rod (50) of the hydraulic assist cylinder (26) is provided with an engaging projection (82) continuously, and the first clamp device (71X) and the second clamp device (71Y) The hybrid extrusion press according to claim 1 or 2, further comprising an engagement recess (82 ') that fits into the engagement protrusion (82). In each of the first clamping device (71X) and the second clamping device (71Y), the engagement recess (82 ′) is supported in the radial direction of the rod (50) by the elastic body and in the axial direction. It is supported to float from the neutral position,
When the engagement recess (82 ′) is closed with respect to the engagement projection (82) in a state where a preload is applied, the engagement recess (82 ′) extends in the axial direction of the rod (50). The hybrid extrusion press according to claim 3, wherein the hybrid extrusion press is configured to be movable.   The first clamp device (71X) and the second clamp device (71Y) detect the position where the pre-load is applied and the engagement convex portion (82) and the engagement concave portion (82 ') are fitted. The hybrid extrusion press according to claim 4, wherein a sensor is provided.

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