Press parallelism adjustment device

Abstract

The present invention relates to a device for adjusting the parallelism of a press die, and more specifically, to a press parallelism adjustment device capable of adjusting the parallelism of an upper slider and improving the precision of press processing by adjusting the height by rotating each adjuster provided at the portion coupled to the elevating post at each corner of the upper slider that moves up and down. This invention is the result of research conducted on the project "Development of a High-Performance Smart Notching System for Manufacturing Electrode Sheets for Secondary Batteries," part of the 2023 Chungbuk Materials, Parts, and Equipment Technology Development Support Project, which is being carried out with the support of Chungcheongbuk-do and the Chungbuk Institute of Science and Technology Innovation.

Description

Technology Field

[0001] The present invention relates to a device for adjusting the parallelism of a press die, and more specifically, to a press parallelism adjustment device capable of adjusting the parallelism of an upper slider and improving the precision of press processing by adjusting the height by rotating each adjuster provided at the portion coupled to the elevating post at each corner of the upper slider that moves up and down. Background Technology

[0003] Generally, a press die or press die device is used for forming metal sheets (e.g., shearing or bending), and includes a die or the like for applying shear or bending force to the metal sheet.

[0004] A press die device includes a lower die installed to be fixed horizontally on a bed or bolster, and an upper die configured to be raised and lowered vertically above the lower die. By lowering the upper die to the lower die, the upper die performs a pressing process or a punching process on a metal sheet supplied onto the lower die.

[0005] A cylindrical rod-shaped post is erected vertically to guide the vertical movement of the upper mold during raising and lowering, and a slide moving along the guide direction of the post receives power from a drive unit such as an upper crank, eccentric cam, and servo motor to reciprocate in the vertical direction. The upper metal rod is coupled to the bottom surface of the slide and moves integrally with the slide, thereby processing the metal sheet.

[0006] On the other hand, the cutting of a metal plate by the vertical movement of the upper die of a press machine presupposes that the slide, which moves up and down along the bolster and post located at the bottom and whose height is fixed, is in a parallel state.

[0007] If the bolster and slide are misaligned or not parallel, the upper die may not contact the lower die evenly, potentially causing greater or less pressure to be applied to specific areas and resulting in uneven product deformation. Additionally, abnormal wear of press machine components, particularly bearings, may lead to premature failure and shortened lifespan, while unnecessary resistance to the slide's movement may cause increased energy consumption. Prior art literature

[0009] KR 20-0159270 (Y1) 1999.07.26.KR 10-1030074 (B1) 2011.04.12. The problem to be solved

[0010] To solve the aforementioned problems, the objective of the present invention is to provide a press parallelism adjustment device capable of adjusting the parallelism of an upper slider that moves up and down integrally with said adjuster by rotating each adjuster provided at the portion coupled to the elevating post at each corner of the upper slider that moves up and down, thereby improving the precision of the press process.

[0011] Another objective of the present invention is to provide a press parallelism adjustment device in which an adjuster surrounding the male threaded portion of an elevating post is inserted into a hole of a first clamp to minimize external exposure and prevent rotation caused by unintended external forces.

[0012] Another objective of the present invention is to provide a press parallelism adjustment device in which an adjuster is exposed above the first clamp at the top and can be easily rotated through the exposed portion, and after the height adjustment is finished, a post flange covers the exposed top of the adjuster to block the influence of external forces.

[0013] Another objective of the present invention is to provide a press parallelism adjustment device capable of preventing the post flange from loosening by having a second female thread formed inside the post flange screw-coupled with a male thread of the elevating post and also bolt-coupled in a vertical direction to a first clamp.

[0014] Another objective of the present invention is to provide a press parallelism adjustment device in which a vertically oriented cut groove is formed on the upper part of the post flange to enable smooth screw fastening with the male threaded part of the elevating post, and the screw fastening state with the male threaded part is firmly fixed by tightening the upper part of the post flange with a second clamp.

[0015] Another objective of the present invention is to provide a press parallelism adjustment device in which the upper slider eliminates play in the downward direction by bolting with a first clamp at the bottom, and eliminates play in the upward direction by engaging with a post flange screwed to a male threaded part at the top, thereby enabling accurate and precise lifting operation. means of solving the problem

[0017] To achieve the above-mentioned purpose, the present invention relates to a press parallelism adjustment device in which an upper slider (20) having an upper mold (21) coupled to a bottom surface and a bolster (30) having a lower mold (31) coupled to a top surface are coupled to a vertically oriented elevating post (10) at each corner, wherein a first hole (110) penetrating vertically is formed in the center, a first female screw portion (121) that is screw-fastened to a male screw portion (11) formed on the upper part of the elevating post (10) is formed on the inner surface of the body (120), and a first large diameter portion (130) formed at the bottom that is larger than the diameter of the body (120) is formed, and an adjuster (100) that moves up and down along the male screw portion (11) by rotation; and a first clamp (200) that is inserted into a first through hole (22) formed in the upper slider (20), has the adjuster (100) inserted into a second hole (210) that penetrates vertically through the center, and has a stepped surface (220) formed such that the upper diameter of the second hole (210) is smaller than the lower diameter of the second hole (210), which is in surface contact with the upper surface of the first large diameter portion (130), and is fixedly coupled to the upper slider (20).

[0018] Additionally, as the adjuster (100) of the present invention is inserted into the second hole (210) of the first clamp (200), the upper surface of the body (120) is positioned higher than the upper surface of the second clamp (400), so that the tool groove (122) formed on the upper part of the body (120) is exposed above the upper slider (20).

[0019] In addition, the diameter of the second large diameter portion (230) formed at the lower part of the first clamp (200) of the present invention is formed to be larger than the diameter of the first through hole (22) of the upper slider (20), so that it forms a step with the bottom surface of the upper slider (20) and makes surface contact.

[0020] The present invention further comprises a post flange (300) in which the body (120) of the adjuster (100) wraps around the upper end exposed to the upper end of the first clamp (200), and the third large diameter portion (320), formed to be larger than the diameter of the first through hole (22) of the upper slider (20), is bolted to the upper slider (20).

[0021] In addition, the bottom surface of the third large diameter portion (320) of the post flange (300) of the present invention is in surface contact with the upper surface of the upper slider (20).

[0022] In addition, a post cover portion (330) that encloses the elevating post (10) is formed on the upper part of the third large diameter portion (320) of the post flange (300) of the present invention, and a second female screw portion (311) that is screw-fastened to the male screw portion (11) of the elevating post (10) is formed on the inner surface of the post cover portion (330).

[0023] Additionally, the diameter of the post cover portion (330) is elastically expanded by the cut groove (331) formed in the post cover portion (330) of the present invention; and a second clamp (400) that tightens the outer surface of the post cover portion (330) to bring the male screw portion (11) and the second female screw portion (311) into close contact.

[0024] In addition, the post cover portion (330) and the second clamp (400) of the present invention are fixed by a snap ring (410). Effects of the invention

[0026] The press parallelism adjustment device according to the present invention has the effect of adjusting the parallelism of an upper slider that moves up and down integrally with said adjuster by rotating each adjuster provided at the portion coupled with the elevating post at each corner of the upper slider that moves up and down, thereby improving the precision of the press processing.

[0027] In addition, the present invention has the advantage that an adjuster surrounding the male threaded portion of the rebating post is inserted into the hole of the first clamp to minimize external exposure, thereby preventing rotation caused by unintended external forces.

[0028] In addition, the present invention allows the adjuster to be easily rotated through the exposed portion by being exposed above the first clamp at the top, and after the height adjustment is completed, the post flange covers the exposed top of the adjuster, thereby blocking the influence of external forces.

[0029] In addition, the present invention has the advantage of preventing the post flange from loosening by having a second female thread formed inside the post flange screw-coupled with a male thread of the elevating post and also bolt-coupled vertically to the first clamp.

[0030] In addition, the present invention has a vertically oriented groove formed on the upper part of the post flange so that it can be smoothly screwed into the male threaded part of the elevating post, and by tightening the upper part of the post flange with a second clamp, it has the effect of firmly fixing the screwed state with the male threaded part.

[0031] In addition, the present invention has the effect of ensuring that the upper slider's downward play is eliminated by bolting with the first clamp at the bottom, and the upward play is eliminated by engaging with the post flange screwed to the male thread at the top, thereby enabling accurate and precise lifting operation. Brief explanation of the drawing

[0033] FIG. 1 is a perspective view of the press parallelism adjustment device of the present invention. FIG. 2 is a cross-sectional view of the press parallelism adjustment device of the present invention. FIG. 3 is an exploded perspective view of the press parallelism adjustment device of the present invention. FIG. 4 is an enlarged cross-sectional view of the press parallelism adjustment device of the present invention. FIG. 5 is a cross-sectional perspective view showing an adjuster in the press parallelism adjustment device of the present invention. FIG. 6 is a cross-sectional perspective view showing the first clamp in the press parallelism adjustment device of the present invention. FIG. 7 is a cross-sectional perspective view showing a post flange and a second clamp in the press parallelism adjustment device of the present invention. FIG. 8 is a cross-sectional view showing the state of adjusting the height of the upper slider in the press parallelism adjustment device of the present invention. Specific details for implementing the invention

[0034] Hereinafter, preferred embodiments of the present invention are described with reference to the accompanying drawings so that those skilled in the art can easily implement them.

[0036] The press parallelism adjustment device according to the present invention relates to a device that improves the precision of press processing by matching the upper and lower parallelisms of a press machine.

[0037] In a press parallelism adjustment device in which an upper slider (20) with an upper mold (21) coupled to the bottom surface and a bolster (30) with a lower mold (31) coupled to the top surface are coupled to vertically elevating posts (10) at each corner,

[0038] A first hole (110) is formed vertically through the center, and a first female screw portion (121) is formed on the inner surface of the body (120) to be screw-fastened with a male screw portion (11) formed on the upper part of the elevating post (10), and a first large diameter portion (130) is formed at the bottom that is larger than the diameter of the body (120), and an adjuster (100) that moves up and down along the male screw portion (11) by rotation; and

[0039] It includes a first clamp (200) that is inserted into a first through hole (22) formed in the upper slider (20), has the adjuster (100) inserted into a second hole (210) that penetrates vertically through the center, and has a stepped surface (220) formed such that the upper diameter of the second hole (210) is smaller than the lower diameter of the second hole (210), which is in surface contact with the upper surface of the first large diameter portion (130), and is fixedly coupled to the upper slider (20).

[0041] A press machine is a machine that processes a material, such as a metal plate, by placing the material to be processed between an upper mold (21) and a lower mold (31) and applying pressure from the upper mold (21) and the lower mold (31). In the press machine, the upper slider (20), which moves up and down, is raised and lowered by receiving power from a crankshaft, gear, servo motor, or motor, and the bolster (30) or bed (hereinafter collectively referred to as the bolster (30)) supports the lower part of the mold from below and withstands the pressure applied from the upper slider (20) to provide stability in processing.

[0042] As shown in FIG. 1, an elevating post (10) that guides the vertical movement of the upper slider (20) is provided in a vertical position. The upper slider (20) is positioned on the upper part of the elevating post (10), and the bolster (30) is positioned below the upper slider (20) and below the elevating post (10).

[0043] As shown in FIG. 1, the upper slider (20) and bolster (30) are connected to the elevating post (10) at the edge corner and are supported by a load. The present invention is a device for adjusting the parallelism of the upper slider (20), which corrects the tilt of the upper slider (20) plane by adjusting the height of the part where the upper slider (20) is connected to the elevating post (10) and sets it to be horizontally parallel to the bolster (30). At this time, it is assumed that the bolster (30) is placed in a horizontally flat state, but if the tilt is misaligned, the parallelism can be adjusted by adjusting the height of the part where the bolster (30) is connected to the elevating post (10).

[0044] As in the embodiment shown in FIG. 1, the upper slider (20) is connected to the elevating post (10) at each of the four corners of the edge, and the degree of inclination of the upper slider (20) is measured and corrected at one corner, and the parallelism with the bolster (30) is adjusted while adjusting the height with the elevating post (10).

[0045] The press parallelism adjustment device according to the present invention is equipped with an adjuster (100) that moves up and down by rotation at the joint portion of the elevating post (10) and the upper slider (20), and as the adjuster (100) moves up and down, the upper slider (20) also moves up and down integrally from the elevating post (10), and the height of each corner is individually adjusted to set the overall tilt and parallelism of the upper slider (20).

[0047] FIG. 2 is an exploded perspective view of the press parallelism adjustment device of the present invention, and FIG. 3 is a combined cross-sectional view. As shown in FIG. 2 and FIG. 3, an adjuster (100), a first clamp (200), a post flange (300), and a second clamp (400) are included to connect an elevating post (10) and an upper slider (20) so that the upper slider (20) is raised and lowered relative to the elevating post (10).

[0048] The upper part of the above-described elevating post (10) is formed with a male screw portion (11) having screw threads, and an adjuster is screw-coupled to the male screw portion (11). A first clamp (200) is positioned on the outer side of the adjuster, and the first clamp (200) passes through a first through hole (22) formed in the upper slider (20) and is fixed by being bolt-coupled to the upper slider (20) at the lower part of the upper slider (20). A post flange (300) is bolt-coupled to the first clamp (200) at the upper part of the upper slider (20), and a second clamp (400) tightens the upper part of the post flange (300). In the present invention, the term "outer side" refers to a direction extending radially from the central axis of the elevating post (10).

[0049] The above adjustment is formed with a first female screw portion (121) that is screw-coupled to the male screw portion (11) of the elevating post (10), so that as the adjustment rotates, it moves up and down along the male screw portion (11) of the elevating post (10).

[0050] The first clamp (200) that is in surface contact with the adjustment rises and falls together with the adjustment, and the upper slider (20) that is bolted to the first clamp (200) rises and falls together with the adjustment, thereby adjusting the height, and the parallelism of the upper slider (20) can be adjusted by adjusting the joint portion of each upper slider (20) and the elevating post (10).

[0051] The above post flange (300) is coupled to the upper slider (20) at the upper part of the upper slider (20) and blocks the exposure of the adjustment to prevent it from being unintentionally rotated by external force, and the second clamp (400) tightens the coupled state of the post flange (300) at the upper part of the post flange (300).

[0053] As shown in FIG. 2, the bolster (30) is connected to the elevating post (10) through a ball retainer (500), and the upper part of the ball retainer (500) is bolted to an upper flange (510) and the lower part to a lower flange (520), and the upper flange (510) and the lower flange (520) are provided with oil seals to be in close contact with the outer surface of the elevating post (10).

[0055] FIG. 5 is a cross-sectional perspective view showing an adjuster (100). As illustrated in FIG. 3 to FIG. 5, the adjuster (100) of the present invention adjusts the height of the portion (corner) where the upper slider (20) is coupled with the elevating post (10). The adjuster (100) has a first hole (110) formed through its center vertically, a first female screw portion (121) formed on the inner surface of the first hole (110) that is screw-fastened with the male screw portion (11) of the elevating post (10), and a first large diameter portion (130) formed at its lower end with a diameter larger than that of the body (120) and protruding outward.

[0056] The body (120) and the first large diameter portion (130) of the adjuster (100) form the outer shape and can be formed in a cylindrical shape. Accordingly, the first large diameter portion (130) is formed to be larger than the diameter of the body (120) and protrudes, thereby forming a step between the body (120) and the first large diameter portion (130). The upper surface of the first large diameter portion (130) formed by the step between the body (120) and the first large diameter portion (130) comes into contact with the step surface (220) formed on the inner surface of the first clamp (200), which will be described later, thereby transmitting the upward force of the adjuster (100) to the first clamp (200). Since the first clamp (200) is fixedly coupled with the upper slider (20), the upper slider (20) can also rise.

[0057] Meanwhile, when the adjuster (100) rotates downward with respect to the male screw portion (11), the upper slider (20) and the first clamp (200) descend due to their own weight so that the upper surface of the first large diameter portion (130) and the stepped surface (220) of the first clamp (200) are always in surface contact, thereby causing the edge of the upper slider (20) to descend.

[0058] In this way, when the adjuster (100) rotates upward, the upper surface of the first large diameter part (130) can be pressed to raise the stepped surface (220) of the first clamp (200), but even when the adjuster (100) rotates downward, it descends due to the weight of the first clamp (200) and the upper slider (20), so that no gap occurs between the upper surface of the first large diameter part (130) and the stepped surface (220) of the first clamp (200), and they always make surface contact.

[0059] In order to rotate the adjuster (100), as shown in FIG. 8, the upper part of the adjuster (100) is exposed above the upper slider (20) (or the first clamp (200)) with the post flange (300) separated, and the operator rotates it using a tool (hook wrench, etc.). A tool groove (122) for inserting a tool may be further formed on the upper outer surface of the adjuster (100) so that it can be coupled to engage with a hook wrench.

[0060] As shown in FIG. 1 according to one embodiment of the present invention, the height of the four corners of the upper slider (20) is adjusted by adjusting the height of the adjuster (100) for each of the four corners of the upper slider (20), thereby adjusting the overall parallelism of the upper slider (20).

[0061] The bottom surface of the adjuster (100) can be lowered so as to make surface contact with one side of the elevating post (10), and at this height, the height becomes the maximum lowering height of the upper slider (20), and further lowering is impossible. By limiting the maximum lowering height of the upper slider (20), damage and overload caused by contact between the upper mold (21) and the lower mold (31) can be prevented.

[0063] FIG. 6 is a cross-sectional perspective view showing the first clamp (200) of the present invention. As shown in FIG. 6, the first clamp (200) has a second hole (210) formed in the center that penetrates vertically, and a second large diameter portion (230) is formed at the bottom with a diameter larger than the diameter of the first through hole (22) of the upper slider (20) and comes into surface contact with the bottom surface of the upper slider (20) due to a step. A bolt penetrates the second large diameter portion (230) in the vertical direction through a hole that penetrates the second large diameter portion (230) from the bottom to the top, and is fitted into the upper slider (20) that comes into surface contact with the upper surface of the second large diameter portion (230) from the bottom surface, thereby fixing the upper slider (20) and the first clamp (200).

[0064] The first clamp (200) is inserted into the first through hole (22) of the upper slider (20) in a portion other than the second large diameter portion (230), such that there is almost no gap between the inner surfaces of the first through hole (22).

[0065] The second hole (210) of the first clamp (200) is formed with different diameters (inner diameters) at the top and bottom. The upper diameter (inner diameter) of the second hole (210) is formed smaller than the lower diameter (inner diameter), so that a step is formed between the upper and lower parts, and the bottom surface of this step is referred to as the 'step surface (220)'. The above-mentioned stepped surface (220) is in surface contact with the upper surface of the first large diameter portion (130) of the adjuster (100), and the force of the adjuster (100) rising is transmitted through the stepped surface (220), causing the first clamp (200) to rise together with the adjuster (100), and when the adjuster (100) descends, the first clamp (200) also descends together due to the weight of the first clamp (200) and the upper slider (20) fixedly coupled to the first clamp (200), and the stepped surface (220) of the first clamp (200) and the upper surface of the first large diameter portion (130) of the adjuster (100) are always in surface contact.

[0066] An adjuster (100) is inserted into the second hole (210) of the first clamp (200), such that the upper end of the adjuster (100) is exposed to the upper end of the first clamp (200). That is, the upper surface of the body (120) of the adjuster (100) is positioned higher than the upper surface of the first clamp (200).

[0067] Except for the portion of the adjuster (100) exposed above the first clamp (200), the first clamp (200) surrounds and protects the outer surface of the adjuster (100), thereby preventing it from rotating due to unintended external force.

[0068] The first clamp (200) fitted into the first through hole (22) of the upper slider (20) wraps around the outer surface of the adjuster (100), and the adjuster (100) wraps around the male screw portion (11) of the elevating post (10).

[0070] FIG. 7 is a cross-sectional perspective view showing the post flange (300) and the second clamp (400) of the present invention. As shown in FIG. 7, the post flange (300) has a third hole (310) formed vertically through the center so that the elevating post (10) passes through the third hole (310), and a post cover portion (330) is formed to surround the outer surface of the elevating post (10), and a second female screw portion (311) is formed on the inner surface of the post cover portion (330) to be screw-fastened with the male screw portion (11) of the elevating post (10), and a third large diameter portion (320) is formed on the lower part of the post cover portion (330) with a diameter larger than the diameter of the post cover portion (330). The diameter of the third large diameter portion (320) is formed to be larger than the diameter (inner diameter) of the first through hole (22) of the upper slider (20), so that it is not inserted into the first through hole (22) and makes surface contact with the upper slider (20) at a step.

[0071] The upper end of the adjuster (100) is inserted into the inner hole of the third large diameter portion (320). The post flange (300) is separated from the coupled state when the adjuster (100) is rotated, and after the adjustment of the adjuster (100) is completed, the upper end of the adjuster (100) exposed above the first clamp (200) is covered so that it is not exposed to the outside. This prevents rotation caused by unintended external forces.

[0072] A bolt hole is formed in the third large diameter portion (320) of the post flange (300) that penetrates vertically, and a bolt is inserted from the top to the bottom of the third large diameter portion (320) and into the first clamp (200) to securely connect the post flange (300) and the first clamp (200).

[0073] On the other hand, to adjust the parallelism of the upper slider (20), the bolt connecting the post flange (300) to the first clamp (200) is loosened and the post flange (300) is separated, so that the upper part of the adjuster (100) is exposed above the first clamp (200), and the worker rotates the exposed upper part to adjust the height.

[0074] The above post flange (300) is fixedly coupled to the first clamp (200) through a bolt that penetrates the third large diameter portion (320) vertically, and the second female screw portion (311) formed on the inner surface of the third hole (310) is screwed into the male screw portion (11) of the elevating post (10) to be fixed in a double manner. With the second female screw portion (311) and the male screw portion (11) screwed together, the bolt connecting the first clamp (200) and the post flange (300) prevents the post flange (300) from rotating, thereby preventing loosening due to external forces such as vibration.

[0075] A cut groove (331) is formed in the post cover portion (330) so that the second female screw portion (311) can be easily screwed into the male screw portion (11) of the elevation. Through the cut groove (331), the diameter (inner diameter) of the post cover portion (330) can be elastically expanded.

[0076] With the above post flange (300) separated, the upper part of the adjuster (100) is rotated to adjust the height of the upper slider (20), and then the second female threaded part (311) of the post flange (300) is inserted so that it is screwed into the male threaded part (11) of the elevating post (10), and the first clamp (200) is fixedly connected through a bolt, and the upper part of the post cover part (330) is tightened through the second clamp (400).

[0077] The second clamp (400) is positioned to wrap around the upper part of the post cover portion (330). When the post flange (300) is fastened to the male screw portion (11) of the elevating post (10), it is elastically deformed by the cut groove (331) to allow for easy fastening. Therefore, in order to tighten the screw fastening state strongly so that it is not loose, the second clamp (400) tightens strongly so that the post cover portion (330) does not spread outward.

[0078] Since the post cover portion (330) and the second clamp (400) are not screw-fastened, a snap ring (410) is further provided to prevent the second clamp (400) from coming off over the post cover portion (330). Accordingly, the second clamp (400) is prevented from coming off by forming a locking structure by the step of the post cover portion (330) at the bottom and by the snap ring (410) at the top.

[0080] FIG. 8 is a cross-sectional view showing the state of adjusting the height of one corner of an upper slider (20) through the press parallelism adjustment device of the present invention. As shown in FIG. 8, the adjuster (100) is surrounded by the first clamp (200) and the post flange (300) and is not exposed to the outside, and as the adjuster (100) rises and falls, the first clamp (200) rises and falls together with the adjuster (100) to adjust the height of the upper slider (20).

[0081] Afterwards, the post flange (300) is fully fastened to the male threaded portion (11) of the elevating post (10), the post flange (300) and the first clamp (200) are secured using a bolt, and the post cover portion (330) is strongly tightened through the second clamp (400) to complete the connection.

[0082] As shown in FIG. 3, when the post flange (300) and the second clamp (400) are combined, the adjuster (100) is hidden from view by the post flange (300) from the top. Additionally, the adjuster (100) is connected to the male threaded portion (11) of the elevating post (10) on the inner side, and the upper surface of the first large diameter portion (130) is in surface contact with the stepped surface (220) of the first clamp (200). The first clamp (200) is bolted to the post flange (300) from the top, and the post flange (300) is connected to the second female threaded portion (311) of the elevating post (10) through multiple connections, so it is securely fastened. Explanation of the symbols

[0084] 10: Elevating post 11: Male screw section 20: Upper slider 21: Upper mold 22: First through hole 30: Bolster 31: Lower mold 100: Adjuster 110: First hole 120: Body 121: First female thread 122: Tool groove 130: First large diameter section 200: 1st clamp 210: 2nd hole 220: Step surface 230: 2nd large diameter part 300: Post flange 310: 3rd hole 311: 2nd female thread 320: 3rd large diameter 330: Post cover part 331: Incision groove 400: 2nd clamp 410: Snap ring 500: Ball retainer 510: Upper flange 520: Lower flange

Claims

Claim 1 In a press parallelism adjustment device in which an upper slider (20) with an upper mold (21) attached to the bottom surface and a bolster (30) with a lower mold (31) attached to the top surface are attached to a vertically oriented elevating post (10) at each corner, a first hole (110) penetrating vertically is formed in the center, a first female screw portion (121) that is screw-fastened to a male screw portion (11) formed on the upper surface of the elevating post (10) is formed on the inner surface of the body (120), and a first large diameter portion (130) formed at the bottom that is larger than the diameter of the body (120) is formed, and an adjuster (100) that moves up and down along the male screw portion (11) by rotation; A press parallelism adjustment device comprising: a first clamp (200) that is fixedly coupled to the upper slider (20), wherein the adjuster (100) is inserted into a first through hole (22) formed in the upper slider (20), and the second hole (210) that penetrates vertically through the center is inserted into the adjuster (100), and the upper diameter of the second hole (210) is formed to be smaller than the lower diameter of the second hole (210), so that the upper surface (220) formed therein is in surface contact with the upper surface of the first large diameter portion (130); and wherein, as the adjuster (100) is inserted into the second hole (210) of the first clamp (200), the upper surface of the body (120) is positioned higher than the upper surface of the second clamp (400), so that the tool groove (122) formed on the upper part of the body (120) is exposed above the upper slider (20). Claim 2 delete Claim 3 A press parallelism adjustment device according to claim 1, wherein the diameter of the second large diameter portion (230) formed at the lower part of the first clamp (200) is formed larger than the diameter of the first through hole (22) of the upper slider (20) to form a step and make surface contact with the bottom surface of the upper slider (20). Claim 4 A press parallelism adjustment device further comprising: a post flange (300) in which the body (120) of the adjuster (100) wraps around the upper end exposed to the upper end of the first clamp (200), and the third large diameter portion (320) formed to be larger than the diameter of the first through hole (22) of the upper slider (20) is bolted to the upper slider (20). Claim 5 In paragraph 4, a press parallelism adjustment device in which the bottom surface of the third large diameter portion (320) of the post flange (300) is in surface contact with the upper surface of the upper slider (20). Claim 6 A press parallelism adjustment device according to claim 4, wherein a post cover portion (330) that surrounds the elevating post (10) is formed on the upper part of the third large diameter portion (320) of the post flange (300), and a second female screw portion (311) that is screw-fastened with the male screw portion (11) of the elevating post (10) is formed on the inner surface of the post cover portion (330). Claim 7 A press parallelism adjustment device further comprising, in claim 6, a second clamp (400) that tightens the outer surface of the post cover portion (330) to bring the male screw portion (11) and the second female screw portion (311) into close contact, wherein the diameter of the post cover portion (330) is elastically expanded by the cut groove (331) formed in the post cover portion (330). Claim 8 In claim 7, a press parallelism adjustment device in which the post cover part (330) and the second clamp (400) are fixed by a snap ring (410).

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