CN214722031U - Double-sided buckling machine of hydraulic piston rod - Google Patents

Abstract

The patent belongs to the technical field of automation equipment, in particular to a double-sided buckling and pressing machine of a hydraulic piston rod, which comprises a rack; the stamping device further comprises an upper stamping ring which is used for stamping the upper surface of the piston part to be processed; a middle support platform that is movable into and out of the ram area of the piston portion; a lower punch ring for punching a lower portion of the piston portion to be processed; and the stamping assembly is used for driving the upper stamping ring to move downwards to complete the stamping process. This patent is through increasing middle part supporting platform between last clamping ring and lower clamping ring, and the during operation supports the lower plane of piston portion through middle part supporting platform earlier and carries out planar withholding in the piston portion, at last plane withholding after finishing, retracts again middle part supporting platform makes piston portion fall to the lower stamping surface of clamping ring down, carries out planar punching press down to the realization carries out the withholding on the positive and negative two sides of hydraulic piston rod under the prerequisite of not taking out hydraulic piston rod, and then increases hydraulic piston rod's machining efficiency.

Description

Double-sided buckling machine of hydraulic piston rod

Technical Field

The invention belongs to the technical field of automation equipment, and particularly relates to a double-sided buckling and pressing machine of a hydraulic piston rod.

Background

The existing hydraulic piston rod comprises a rod part and a piston part, and when the hydraulic piston rod is manufactured, the piston part is fixed on the piston rod in a mould buckling and pressing mode, so that two ends of the piston part are clamped in clamping grooves of the rod part to be fixed; the piston portion has two positive and negative sides, so two positive and negative sides all need the mould to withhold, withholds twice altogether, when withholding one of them face, need support the other face, for example support the other face of piston portion on the plane, or support the piston rod. If carry out the mould simultaneously to the two sides of piston rod and withhold the case, because the processing environment is complicated, and the piston portion can produce certain deformation when adding man-hour, thereby it is balanced to be difficult to ensure two-sided atress, the processing effect is not ideal, and there is very big risk to lead to the product to scrap, so current staff needs positive and negative processing twice when processing this hydraulic piston rod, after hydraulic piston rod one side processing finishes promptly, take off its installation in the opposite direction again, but to the staff, so the process flow is complicated, influence machining efficiency, get when taking hydraulic piston rod at the staff simultaneously, easy maloperation leads to personal safety, now need one kind to put urgent need for can the safety in production, and once only accomplish the double-sided withhold press of the hydraulic piston rod of manufacturing procedure.

Disclosure of Invention

The utility model aims at providing a can the safety in production, and once only accomplish the double-sided knot press of hydraulic piston rod of manufacturing procedure.

The purpose of the utility model is realized like this:

a double-sided buckling and pressing machine of a hydraulic piston rod comprises a frame; also comprises

An upper punch ring for punching an upper surface of a piston portion to be processed; an upper hole cavity for the upper end of the rod part to pass through is formed in the center of the upper punch ring, and an upper punch surface is formed on the lower edge of the upper hole cavity; the upper punching surface is used for extruding the upper part of the piston part to be processed, so that the upper part of the piston part is deformed and tightly embraces the rod part;

a middle support platform that is movable into and out of the ram area of the piston portion; in the process of stamping the upper part of the piston part, the middle supporting platform moves into the stamping area and supports the lower plane of the piston part; in the stamping process of the lower part of the piston part, the middle supporting platform moves out of the stamping area of the piston part, so that the lower part of the piston part is abutted against the lower stamping ring;

a lower punch ring for punching a lower portion of the piston portion to be processed; the center of the lower punch ring is provided with a lower hole cavity for the lower end of the rod part to pass through, and the lower edge of the lower hole cavity is provided with a lower punch surface; the lower stamping surface is used for extruding the lower part of the piston part to be processed, so that the lower part of the piston part deforms and tightly holds the rod part;

and the stamping assembly is used for driving the upper stamping ring to move downwards to complete the stamping process.

Furthermore, the middle supporting platform comprises supporting blocks which are respectively arranged on two sides of the piston part, and the supporting blocks are connected with a first driving component which drives the supporting blocks to move towards the piston part.

Furthermore, the supporting block is movably arranged on the lower punch ring and is in contact with the lower punch ring.

Furthermore, mounting seats are arranged on two sides of the lower punch ring, and the mounting seats are provided with the supporting blocks and first driving assemblies connected with the supporting blocks.

Furthermore, the lower punch ring is provided with a first slideway matched with the supporting block, and the supporting block is movably arranged in the first slideway through the first driving assembly.

Furthermore, front and rear lugs are formed at the front and rear parts of the lower punch ring, and the front and rear lugs form two inner walls of the first slideway; the supporting block is movably arranged between the front and rear lugs.

Furthermore, the front and rear lugs are externally connected with limit blocks, and the limit blocks are provided with limit ends positioned above part of the slideways and used for limiting the support blocks.

Further, an arc-shaped notch is formed in the supporting block and used for enabling the supporting block to be fully abutted to the lower plane of the piston portion.

Further, the lower punch ring comprises a die holder, a die core is detachably arranged in the die holder, and the lower hole cavity and the lower punch surface are arranged in the die core.

Further, the rack comprises an upper rack and a lower rack, a second slide way is arranged on the lower rack, and a abdicating part for accommodating the rod part is arranged at the bottom of the second slide way; a movable seat is further arranged in the second slideway, one end of the movable seat is connected with a second driving assembly for driving the movable seat to move in the second slideway, and the lower punch ring is arranged on the movable seat; the upper frame is provided with the stamping assembly.

Furthermore, the two sides of the movable seat of the second slideway are also provided with retractable plates which can be retracted along with the movement of the movable seat and are used for covering the parts of the second slideway except the movable seat.

Further, the stamping assembly comprises a stamping head and a servo motor connected with the stamping assembly; and the upper stamping ring is arranged at the tail end of the stamping head.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

1. the utility model discloses an increase middle part supporting platform between upper punch ring and lower punching press ring, the during operation carries out planar withholding in the piston portion through the lower plane that middle part supporting platform supported the piston portion earlier, at last plane withheld the back that finishes, retracts again middle part supporting platform makes the piston portion fall to the lower punching press face of punching press ring down, carries out planar punching press down to the realization carries out the withholding of the positive and negative two sides of hydraulic piston rod under the prerequisite of not taking out hydraulic piston rod, and then increases hydraulic piston rod's machining efficiency.

2. The utility model discloses a middle part supporting platform is the supporting shoe, and the blocky body is made conveniently, and compares in the strip supporter, and its intensity is bigger, is difficult to damage.

3. The utility model discloses in, be equipped with the mount pad in the both sides of punching press ring down, the mount pad is used for installing the supporting shoe and connects supporting shoe drive assembly to make the supporting shoe be close to punching press ring setting down, and then reduce the distance that differs between processing piston portion and the punching press ring down, thereby in piston portion whereabouts, reduce its decline inertia that highly brings, prevent that it from damaging when the whereabouts.

4. The utility model provides a be equipped with slide one on the lower punching ring, be used for the guide the supporting shoe removes to the stability that the supporting shoe removed has been increased.

5. The utility model provides a lower punching press ring front and back shaping has front and back lug, through the front and back lug forms slide one to make slide integrated into one piece set up on the lower punching press ring, reduce the step of its processing, be convenient for make.

6. The utility model discloses a still be external on the lug around having the stopper, be used for go up spacingly the slide one further increases the stability that the supporting block removed.

7. The utility model discloses an arc notch has still been seted up on the supporting shoe, generally, the shape of piston portion is circular in the piston rod, and piston portion includes inner circle and outer lane, and the inner circle is used for withholding on pole portion through the mould, and the outer lane is the plane, and is the semicircle arcuation, so comes this outer lane of adaptation through setting up the arc notch, and then increases the butt area of supporting part and piston portion, increases the supporting effect.

8. The utility model discloses a lower punching ring comprises die holder and mold core, and its effect lies in convenient to use person and changes the mould for it uses more in a flexible way.

9. The utility model discloses a double-sided withhold machine still includes the frame, and the frame includes sliding seat and base, is equipped with slide two on the base, the portion of letting the position that is used for holding pole portion is seted up to two bottoms of slide, thereby makes the sliding seat slides and sets up in the slide two, change the position of sliding seat, the processing requirement of the adaptation shape of being convenient for, specification.

10. The utility model discloses an in slide two, still be equipped with the expansion plate in sliding seat both sides, the expansion plate is used for covering slide two and removes the sliding seat part, plays certain guard action to have flexible characteristic through the expansion plate, come the slip of adaptation sliding seat, thereby realize also can realizing the protection that covers slide two under the condition that the sliding seat removed.

Drawings

FIG. 1 is an overall schematic view of a double-sided buckle press;

FIG. 2 is an exploded schematic view of a hydraulic piston rod;

FIG. 3 is a schematic view of the structure at the lower punch ring

FIG. 4 is a schematic view of the structure when machining the upper plane of the piston portion;

FIG. 5 is a sectional view of the structure when the upper plane of the piston portion is machined;

FIG. 6 is an enlarged view at A in FIG. 5;

FIG. 7 is a sectional view of the piston portion in a state where the lower plane of the piston portion is processed;

FIG. 8 is a schematic diagram of the construction of the undershoot ring;

fig. 9 is a schematic structural view of the lower frame.

The reference numerals in the figures denote the meanings:

1. stamping a ring; 11. an upper bore cavity; 12. punching a stamping surface; 2. punching a pressure ring downwards; 21. a first slideway; 22. front and rear lugs; 221. an inner wall; 23. a limiting block; 24. a limiting end; 25. a die holder; 26. a mold core; 27. a lower cavity; 28. punching a pressing surface; 3. a hydraulic piston rod; 31. a rod portion; 311. a card slot; 32. a piston portion; 321. an upper plane; 323. an upper top end; 4. a stamping assembly; 41. punching a head; 42. a servo motor; 5. a middle support platform; 51. a support block; 511. an arc-shaped notch; 52. a first driving component; 53. a mounting seat; 6. an upper frame; 7. a lower frame; 71. a second slideway; 72. a relief portion; 73. a movable seat; 74. a second driving component; 75. a retractable plate; 76. a bearing part.

Detailed Description

The invention will be further described with reference to specific embodiments below:

as shown in fig. 2, the utility model discloses hydraulic piston rod 3 that will process includes pole portion 31 and piston portion 32, pole portion 31 is generally cylindrical, is equipped with draw-in groove 311 in the place that pole portion 31 needs to install piston portion 32, piston portion 32 is the sleeve form when not adding man-hour, piston portion 32 cover sets up the position that is equipped with draw-in groove 311 on pole portion 31, and the form of withholding through the mould makes the last top 323 and the lower top of piston portion 32 both sides bend to draw-in groove 311 to hold pole portion 31 tightly and carry out spacing fixed.

As shown in fig. 1, a double-sided buckle press machine of a hydraulic piston rod, the double-sided buckle press machine of the present invention includes a frame presenting a "C" shape, forming an upper frame 6 and a lower frame 7; the upper frame is provided with an upper stamping ring, the lower frame is provided with a lower stamping ring, and the upper frame 6 is further provided with a stamping assembly 4 for driving the upper stamping ring 1 to move downwards. The upper punch ring 1 is used for punching the upper surface of the piston part 32 to be processed; the center of the upper punch ring 1 is provided with an upper hole cavity 11 for the upper end of the rod part 31 to pass through, and the lower edge of the upper hole cavity 11 is provided with an upper punch surface 12; the upper punching surface 12 is used for pressing the upper part of the piston part 32 to be processed, so that the upper part of the piston part 32 is deformed and clasps the rod part 31; the lower portion of the piston portion 32 for punching to be processed; the center of the lower punch ring 2 is provided with a lower hole cavity 27 for the lower end of the rod part 31 to pass through, and the lower edge of the lower hole cavity 27 is provided with a lower punch surface 28; the lower punch surface 28 is used for pressing the lower part of the piston part 32 to be processed, so that the lower part of the piston part 32 is deformed and clasps the rod part 31; the upper punch surface 12 and the lower punch surface 28 are embodied as an inwardly concave arc.

The stamping assembly 4 comprises a stamping head 41 and a servo motor 42 connected with the stamping assembly 4, and the tail end of the stamping head 41 is provided with the upper stamping ring 1; this design is convenient for change upper punch ring 1, and servo motor 42 can accurate control upper punch ring 1 dynamics of pushing down, increases the accuracy nature of processing, reduces the disability rate.

Further, as shown in fig. 4-7, a middle support platform 55 is movably disposed between the upper punch ring 1 and the lower punch ring 2, and can move into or out of the punching area of the piston portion 32; during the upper part stamping process of the piston part 32, the middle supporting platform 5 moves into the stamping area and supports the lower plane of the piston part 32, at the moment, the upper stamping ring 1 acts on the upper plane 321 of the piston part 32, and the upper stamping surface 12 of the upper stamping ring 1 is contacted with the upper top end 323 of the piston part 32 for processing; during the stamping of the lower part of the piston part 32, the central support platform 5 is moved out of the stamping area of the piston part 32 so that the lower part of the piston part 32 abuts against the lower punch ring 2, the lower tip of the piston part 32 now contacts the lower stamping surface 28 of the lower punch ring 2, the lower plane of the piston part 32 contacts the die core 26 of the lower punch ring 2, and the machining of the lower plane of the piston part 32 is performed by pressing down the hydraulic piston rod 3. Through the structure, the front and back surfaces of the hydraulic piston rod 3 are buckled and pressed on the premise of not taking out the hydraulic piston rod 3, and the processing efficiency of the hydraulic piston rod 3 is further improved.

As shown in fig. 2, the piston portion 32 of the hydraulic piston rod 3 is flat, the upper tip 323 and the lower tip are provided at the center of both sides of the piston portion 32, and when the upper tip 323 of the piston portion 32 is machined, the support portion abuts against the lower plane of the piston portion 32, the lower plane is a force-bearing plane, and the lower tip of the piston portion 32 is not subjected to force, so that the lower tip of the piston portion 32 is not deformed by buckling, and the force-bearing plane is not unstable due to the deformation; when the lower tip is machined, the upper tip 323 and the upper flat surface 321 of the piston portion 32 are stress surfaces, and since the upper tip 323 of the piston portion 32 is machined to be sufficiently fitted into the rod portion 31 and the upper tip 323 is shaped to be sufficiently abutted against the upper punch surface 12 of the upper punch ring 1, the stress surfaces are also stable when the lower tip is machined; in summary, the hydraulic piston rod 3 processed in the above manner has a much lower rejection rate than the hydraulic piston rod 3 processed in the manner of simultaneously fastening both ends of the piston portion 32.

Specifically, the middle supporting platform 5 includes supporting blocks 51 respectively disposed at two sides of the piston portion 32, and the supporting blocks 51 are connected to a first driving assembly 52 for driving the supporting blocks 51 to move toward the piston portion 32. As shown in fig. 3, the supporting block 51 is square, and is generally made of metal material, and besides the square supporting block, it may also be a vertical supporting rod structure, but has stronger strength compared with a block structure, is not easy to be damaged, and has good supporting effect.

The supporting block 51 of the present invention is further provided with an arc-shaped notch 511, as shown in fig. 2, the shape of the piston portion 32 in the piston rod is circular, and the piston portion 32 includes an upper top 323 and a lower top of the inner ring and an upper plane 321 and a lower plane of the outer ring, the inner ring is used for being buckled and pressed on the rod portion 31 through the mold; since the piston portion 32 is circular and the upper plane 321 and the lower plane thereof are semi-arc-shaped, the arc notch 511 is provided to fit the outer ring, thereby increasing the contact area between the supporting portion and the piston portion 32 and increasing the supporting effect.

Further, the supporting block 51 is movably disposed on the lower punch ring 2 and is in contact with the lower punch ring 2, as shown in fig. 3, mounting seats 53 are disposed on two sides of the lower punch ring 2 and are used for mounting the supporting block 51 and a first driving assembly 52 connected to the supporting block 51, the mounting seats 53 are fixed on the lower frame 7 and are fixed on the left and right sides of the lower punch ring 2 by fixing structures such as screws, a protrusion is disposed on the mounting seat 53, the first driving assembly 52 is fixed on the protrusion, the driving assembly is specifically a driving cylinder, the supporting block 51 is disposed at the end of the driving cylinder, the height of the protrusion is adapted to the height of the lower punch ring 2, so that the supporting block 51 is in contact with the lower punch ring 2 when moving, and the supporting block 51 is beneficial in that when the lower plane of the piston portion 32 is supported by the supporting block 51, a lower punch ring 2 is arranged below the supporting block 51 for supporting, so that the supporting effect of the supporting block 51 is increased, and the supporting block 51 is prevented from being damaged; meanwhile, the positions of the piston part 32 and the lower punch ring 2 are reduced, so that when the piston part 32 falls, the falling inertia caused by the height of the piston part is reduced, and the piston part is prevented from being damaged when falling.

Furthermore, a first slideway 21 matched with the supporting block 51 is arranged on the lower punch ring 2, and the supporting block 51 is movably arranged in the first slideway 21 through the first driving assembly 52. As shown in fig. 8, the lower punch ring 2 is formed with front and rear protrusions 22 at the front and rear sides, and the front and rear protrusions 22 form two inner walls 221 of the first slide way 21; the supporting block 51 is movably arranged between the front and rear lugs 22. The utility model provides a be equipped with slide one 21 on lower punch ring 2, be used for the guide supporting shoe 51 removes to increased the stability that supporting shoe 51 removed, and the utility model discloses a front and back lug 22 forms slide one 21, thereby make slide one 21 body shaping setting be in on lower punch ring 2, reduce the step of its processing, be convenient for make.

Furthermore, a limiting block 23 is further externally connected to the front and rear protruding blocks 22, and the limiting block 23 is provided with a limiting end 24 located above the first slide rail 21 and used for limiting the first slide rail 21. The limiting block 23 is fixed on the front and rear protruding blocks 22 through screws and faces the first slideway 21, and is used for limiting the first slideway 21 upwards, so that the moving stability of the supporting block 51 is further improved.

Further, as shown in fig. 3, the lower punch ring 2 includes a die holder 25, a die core 26 is detachably disposed in the die holder 25, and the die core 26 is provided with the lower cavity 27 and a lower punch surface 28. The effect lies in that the user of being convenient for changes the mould for its use is more nimble. In fact, the lower cavity 27 is arranged through the die core 26, and the lower stamping surfaces 28 are formed on the lower cavity 27 on the front side and the back side of the die core 26, so that when the lower stamping surface 28 on one side is worn due to machining, the lower stamping surface is directly replaced by the lower stamping surface on the other side, thereby reducing the time spent on replacing the die core 26 and increasing the efficiency.

Further, as shown in fig. 3 and 9, a second slideway 71 is arranged on the lower frame 7, the second slideway 71 is in a front-back direction, a yielding portion 72 for accommodating the rod portion 31 is arranged at the bottom of the second slideway 71, the bottom of the second slideway 71 is made of a metal plate, and a gap is dug in the metal plate to form the yielding portion 72; a movable seat 73 is further arranged in the second slideway 71, one end of the movable seat 73 is connected with a second driving assembly 74 for driving the movable seat 73 to move in the second slideway 71, and the lower punch ring 2 is arranged on the movable seat 73; the second driving assembly 74 is a driving cylinder, and electrically drives the movable seat 73 to move. The position of the movable seat 73 is changed through the form of the second slide way 71, so that the machining requirements of various shapes and specifications can be met.

Furthermore, a bearing part 76 is detachably arranged on the bottom surface of the second slideway 71; as shown in fig. 3 and 9, a groove is formed in the bottom surface of the second slideway 71, and the receiving part 76 matched with the groove in size is detachably arranged in the groove to form a flat bottom surface of the second slideway 71; when the hydraulic piston rod 3 is manufactured, the sharp edge of the movable seat 73 is contacted with the bottom surface of the second slideway 71 under the stamping of the upper stamping ring 1, so that part of the bottom surface of the second slideway 71 is deformed, and the normal movement of the movable seat 73 on the second slideway 71 is influenced; the bearing part 76 is arranged to be contacted with the edge of the movable seat 73, the bearing part 76 is generally made of a material with higher strength, and after the bearing part 76 is worn, the second slide way 71 can be repaired by replacing the bearing part 76; in general, through the design, the repair work of the worn second slideway 71 is simplified, and the service life of the product is prolonged.

Further, as shown in fig. 1 and 3, the two slideways 71 are further provided with retractable plates 75 on two sides of the movable seat 73, and the retractable plates 75 are retractable along with the movement of the movable seat 73 and are used for covering the parts of the two slideways 71 except for the retractable plates 75. The expansion plate 75 is composed of a plurality of iron plates connected end to end, when the movable seat 73 moves, the expansion plate 75 on one side is pushed, and the expansion or retraction of the expansion plate 75 is determined according to the position of the movable seat 73. The expansion plate 75 is used for covering the second slideway 71 except the movable seat 73 part, plays a certain protection role, and adapts to the sliding of the sliding seat through the expansion characteristic of the expansion plate 75, so that the second slideway 71 can be covered and protected under the condition that the sliding seat moves.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (10)

1. The utility model provides a hydraulic piston rod's two-sided withhold machine which characterized in that: comprises a frame; also comprises

An upper punch ring (1) for punching an upper surface of a piston portion (32) to be processed; an upper hole cavity (11) for the upper end of the rod part (31) to pass through is arranged in the center of the upper punch ring (1), and an upper punch surface (12) is arranged on the lower edge of the upper hole cavity (11); the upper stamping surface (12) is used for extruding the upper part of the piston part (32) to be processed, so that the upper part of the piston part (32) is deformed and clasps the rod part (31);

a middle support platform (5) which can move into or out of the stamping area of the piston part (32); during the stamping process of the upper part of the piston part (32), the middle supporting platform (5) moves into the stamping area and supports the lower plane of the piston part (32); during the stamping process of the lower part of the piston part (32), the middle supporting platform (5) moves out of the stamping area of the piston part (32) so that the lower part of the piston part (32) abuts against the lower stamping ring (2);

a lower punch ring (2) for punching the lower part of a piston part (32) to be processed; the center of the lower punch ring (2) is provided with a lower hole cavity (27) for the lower end of the rod part (31) to pass through, and the lower edge of the lower hole cavity (27) is provided with a lower punch surface (28); the lower stamping surface (28) is used for extruding the lower part of the piston part (32) to be processed, so that the lower part of the piston part (32) is deformed and tightly holds the rod part (31);

and the stamping assembly (4) is used for driving the upper stamping ring (1) to move downwards to complete the stamping process.

2. The double-sided fastener press of a hydraulic piston rod according to claim 1, characterized in that: the middle supporting platform (5) comprises supporting blocks (51) which are respectively arranged on two sides of the piston part (32), and the supporting blocks (51) are connected with a first driving assembly (52) which drives the supporting blocks to move towards the piston part (32).

3. The double-sided fastener press of a hydraulic piston rod as recited in claim 2, wherein: the supporting block (51) is movably arranged on the lower punch ring (2) and is in contact with the lower punch ring (2).

4. The double-sided fastener press of a hydraulic piston rod as recited in claim 3, wherein: and mounting seats (53) are arranged on two sides of the lower punch ring (2), and the mounting seats (53) are provided with the supporting blocks (51) and first driving assemblies (52) connected with the supporting blocks (51).

5. The double-sided fastener press of a hydraulic piston rod as recited in claim 2, wherein: the lower punch ring (2) is provided with a first slideway (21) matched with the supporting block (51), and the supporting block (51) is movably arranged in the first slideway (21) through the first driving assembly (52).

6. The double-sided fastener press of a hydraulic piston rod as recited in claim 5, wherein: front and rear lugs (22) are formed in the front and rear of the lower punch ring (2), and the front and rear lugs (22) form two inner walls (221) of the first slideway (21); the supporting block (51) is movably arranged between the front and rear lugs (22).

7. The double-sided fastener press of a hydraulic piston rod as recited in claim 6, wherein: the front and rear lugs (22) are also externally connected with limiting blocks (23), and the limiting blocks (23) are provided with limiting ends (24) located above part of the first slide ways (21) and used for limiting the supporting blocks (51) upwards.

8. The double-sided fastener press of a hydraulic piston rod as recited in claim 2, wherein: the supporting block (51) is further provided with an arc-shaped notch (511) for enabling the supporting block (51) to be fully abutted against the lower plane of the piston part (32).

9. The double-sided fastener press of a hydraulic piston rod according to claim 1, characterized in that: the lower punch ring (2) comprises a die holder (25), a die core (26) is detachably arranged in the die holder (25), and a lower hole cavity (27) and a lower punch surface (28) are arranged in the die core (26).

10. The double-sided fastener press of a hydraulic piston rod according to claim 1, characterized in that: the rack comprises an upper rack (6) and a lower rack (7), a second slideway (71) is arranged on the lower rack (7), and a yielding part (72) used for accommodating the rod part (31) is formed at the bottom of the second slideway (71); a movable seat (73) is further arranged in the second slideway (71), one end of the movable seat (73) is connected with a second driving assembly (74) for driving the movable seat to move in the second slideway (71), and the lower punch ring (2) is arranged on the movable seat (73); the upper frame (6) is provided with the stamping assembly (4);

a bearing part (76) is detachably arranged on the bottom surface of the second slideway (71); when the hydraulic piston rod (3) is machined, the edge of the movable seat (73) abuts against the bearing part (76);

the two sides of the sliding way (71) on the movable seat (73) are also provided with telescopic plates (75), and the telescopic plates (75) stretch along with the movement of the movable seat (73) and are used for covering the parts of the sliding way (71) except the movable seat (73);

the stamping assembly (4) comprises a stamping head (41) and a servo motor (42) connected with the stamping assembly (4); the tail end of the stamping head (41) is provided with the upper stamping ring (1).

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