Foldable PFA Tube Uncoiler

Abstract

The disclosed PFA tube unwinder comprises: a movable trolley; a rotating disc having a horizontal disc shape, with a plurality of connecting brackets formed along the circumferential direction on its upper surface, and installed on the upper surface of the trolley so as to be freely rotatable in the horizontal direction on its lower surface side; and a plurality of mounting beams installed on each connecting bracket so as to be horizontally unfolded toward the upper surface of the rotating disc or folded vertically toward the upper surface of the rotating disc, and forming a mounting space in which a PFA tube wound in a roll shape is horizontally mounted and unwound upon unfolding.

Description

Technology Field

[0001] The present invention relates to a PFA (Perfluoroalkoxy) tube unwinder, and more specifically, to a PFA tube unwinder that prevents the PFA tube from bending when unwinding a wound PFA tube during the manufacture of chemical pipes used in semiconductor manufacturing processes, etc., and allows the tube to be folded and stored when not in use. Background Technology

[0002] In this invention, background technology is provided, and this does not necessarily mean known technology.

[0003] In general, PFA (Perfluoroalkoxy) tubes, which possess excellent chemical and heat resistance, are widely used in semiconductor manufacturing and chemical processes to transport high-purity chemicals. In particular, double-walled chemical pipes, in which a PFA tube is inserted inside a CPVC pipe to protect the tube from external shocks, are primarily used.

[0004] To manufacture these chemical pipes, a process must first be performed in which a PFA tube, wound in a long roll, is gradually unwound and inserted into a CPVC pipe.

[0005] However, conventionally, since the operator unwinds the PFA tube without a separate dedicated unwinder, there was a problem in that the tension of the PFA tube was applied unevenly or pulled out abruptly, causing the so-called kink phenomenon, in which the PFA tube bends, occurred frequently.

[0006] In other words, once a PFA tube is bent, it cannot be restored and can obstruct fluid flow or cause damage; therefore, all bent PFA tubes must be discarded, which has become the main cause of process losses and increased costs. Prior art literature

[0007] Korean Patent Publication No. 10-2025-0157174. The problem to be solved

[0008] The present invention aims to provide a PFA tube unwinder that induces stable unwinding of the PFA tube to fundamentally prevent bending damage to the tube, and at the same time allows it to be easily folded for storage and transport when not in use through a variable mounting structure. means of solving the problem

[0009] A general summary of the invention is provided herein, and this should not be understood as limiting the scope of the invention.

[0010] To solve the above-mentioned problem, a PFA tube unwinder according to any one aspect of the present invention may include: a movable trolley; a rotating disc having a horizontal disc shape, with a plurality of connecting brackets formed along the circumferential direction on its upper surface, and installed on the upper surface of the trolley so as to be freely rotatable in the horizontal direction on its lower surface side; and a plurality of mounting beams installed on each connecting bracket so as to be horizontally unfolded toward the upper surface of the rotating disc or folded vertically toward the upper surface of the rotating disc, and forming a mounting space in which a PFA tube wound in a roll shape is horizontally mounted and unwound upon unfolding.

[0011] In a PFA tube unwinder according to one aspect of the present invention, each mounting beam comprises: a first support arm, one end of which is rotatably installed on a connecting bracket; and a second support arm, one end of which is mutually foldably connected to the other end of the first support arm via a hinge, wherein the hinge may be installed so that the second support arm can be folded in an upward direction of the first support arm, which is horizontally unfolded on the upper surface of a rotating disk.

[0012] In a PFA tube unwinder according to one aspect of the present invention, a support member may be installed at the lower end of the other end of the first support arm to support and maintain a horizontal state by supporting the lower end of the second support arm that is unfolded in a horizontal direction, so as to protrude toward the second support arm.

[0013] In a PFA tube unwinder according to one aspect of the present invention, a plurality of anti-detachment rod fastening holes, to which a vertical anti-detachment rod that prevents the PFA tube mounted in the seating space from detaching is optionally coupled, may be formed spaced apart along the longitudinal direction of the second support arm on the upper part of the second support arm.

[0014] In a PFA tube unwinder according to one aspect of the present invention, a plurality of anti-detachment rod storage holders are formed on the upper surface of a rotating disk, into which anti-detachment rods separated from the second support arm are inserted and stored when the mounting beam is folded vertically, and the anti-detachment rod storage holders may be formed in a cylindrical shape extending vertically upward from the upper surface of the rotating disk. Effects of the invention

[0015] According to the present invention, by inducing the PFA tube to be stably unwound with constant tension through a rotatably provided mounting structure, the kinking phenomenon of the PFA tube occurring during the unwinding process is prevented, thereby providing the effect of significantly reducing raw material loss and process waste rate.

[0016] According to the present invention, through a foldable structure of a first support arm and a second support arm joined via a hinge, the mounting beam is folded vertically when not in use for storage, thereby minimizing the occupied space and providing the effect of maximizing space utilization efficiency within the workplace.

[0017] According to the present invention, by arranging a rotating disk on the upper part of a bogie and configuring a mounting beam radially thereon, it is possible to stably accommodate PFA tube rolls having various winding diameters and provide the effect of enabling universal use.

[0018] According to the present invention, by providing an anti-detachment rod coupled to the end of a mounting beam, the PFA tube may become detached or tangled during the PFA tube unwinding operation, thereby providing the effect of simultaneously ensuring the continuity and safety of the operation.

[0019] According to the present invention, by adopting a trolley structure equipped with casters on the lower part, convenience is provided in that the device can be easily moved to a desired position by an operator even when a heavy PFA tube roll is mounted. Brief explanation of the drawing

[0020] FIG. 1 is an overall perspective view showing a state in which a PFA tube is mounted on a PFA tube unwinder according to the present invention. Figure 2 is a perspective view showing each configuration of the PFA tube unwinder illustrated in Figure 1. FIG. 3 is a perspective view showing the folded state of the mounting beam and the storage state of the anti-detachment rod shown in FIG. 1. FIG. 4 is an enlarged perspective view of one of the mounting beams shown in FIG. 3. Specific details for implementing the invention

[0021] Hereinafter, an embodiment implementing a PFA tube unwinder according to the present invention will be described in detail with reference to the drawings.

[0022] FIGS. 1 to 4 are schematic drawings of a PFA tube unwinder (100) according to the present invention, wherein the PFA tube unwinder (100) according to the present invention includes a bogie (110), a rotating disk (120), and a plurality of mounting beams (130).

[0023] First, the trolley (110) movably and stably supports a rotating disk (120) and a plurality of mounting beams (130) installed on the rotating disk (120).

[0024] To this end, the bogie (110) is formed to resist bending loads and torsional loads, etc., by a roll-shaped PFA tube (T) mounted on a rotating disc (120) and a plurality of mounting beams (130), particularly on a plurality of deployed mounting beams (130).

[0025] For example, FIGS. 1 to 3 show a bogie (110) in the shape of a roughly cuboidal housing, but this is merely one embodiment and it will be obvious to those skilled in the art to which the present invention belongs that the shape of the bogie (110) is not limited to a specific shape.

[0026] In addition, a plurality of casters (112) equipped with brake means to enable movement and position fixation are installed on the lower surface of the bogie (110), and a bearing (not shown) is installed in the center of the upper surface of the bogie (110) to support the rotating disc (120) so that it can rotate smoothly.

[0027] Meanwhile, a separate storage space (not shown) may be formed on the upper surface of the trolley (110) so as not to interfere with the rotating disk (120) and the plurality of mounting beams (130) installed thereon.

[0028] For example, tools (e.g., tube cutters, measuring tools, etc.) or accessories required for working with PFA tubes (T) can be stored in the storage space, thereby increasing tool management efficiency at the work site and minimizing work movement.

[0029] Preferably, a separate weight (not shown) may be installed on the inner lower side of the bogie (110) to prevent tipping due to the high load and rotational inertia of the PFA tube (T).

[0030] More preferably, a leveler (not shown) can be installed adjacent to the casters (112) to precisely adjust and fix the horizontal state of the bogie (110) in response to unevenness of the ground.

[0031] The rotating disk (120) induces stable unwinding of the PFA tube (T) mounted on a plurality of mounting beams (130).

[0032] The rotating disk (120) is formed in the shape of a horizontal disc and is coupled to a bearing (not shown) installed in the center of the upper surface of the bogie (110) so that the lower surface side can rotate in the horizontal direction.

[0033] In other words, the rotating disk (120) is installed on the upper surface of the bogie (110) so as to be free-rotated by the unwinding output of the PFA tube (T) mounted on the plurality of mounting beams (130).

[0034] Accordingly, the rotating disk (120) rotates smoothly in response to the drawing force generated during the unwinding of the PFA tube (T), thereby preventing stress from concentrating on a specific part of the PFA tube (T) and maintaining a uniform unwinding tension throughout the entire length of the PFA tube (T).

[0035] That is, the rotational behavior of the rotating disk (120) suppresses the phenomenon of the PFA tube (T) rapidly unraveling or tangling, thereby fundamentally preventing the kink phenomenon in which the PFA tube (T) bends during the unwinding process and providing a stable unwinding state.

[0036] Here, the connection relationship between the rotating disk (120) and the bearing corresponds to known technology, so a detailed description thereof is omitted.

[0037] Preferably, a tension control knob (not shown) may be installed on the lower or central axis side of the rotating disk (120) to control the rotational resistance of the rotating disk (120) by controlling the compression force applied in the direction of the lower or central axis of the rotating disk (120).

[0038] Specifically, the tension adjustment knob moves in and out by a screw connection method and presses the lower structure of the rotating disk (120), thereby allowing the degree of free rotation of the rotating disk (120) to be adjusted during the extraction operation of the PFA tube (T), and the user can optimize the rotational sensitivity of the rotating disk (120) in response to the remaining amount (diameter of the roll) or weight of the seated PFA tube (T).

[0039] In particular, even when the unwinding of the PFA tube (T) is suddenly stopped, the rotating disk (120) rotates excessively by inertia through the set rotational resistance, thereby effectively preventing the PFA tube (T) from getting tangled.

[0040] Meanwhile, on the upper surface of the rotating disk (120), a plurality of connecting brackets (122) on which a plurality of mounting beams (130) are installed are formed at equal angular intervals along the circumferential direction, and on each of the plurality of connecting brackets (122), the mounting beams (130) are installed so that they can be spread horizontally toward the upper surface of the rotating disk (120) or folded vertically toward the upper surface of the rotating disk (120).

[0041] Here, the connection relationship between the connecting bracket (122) and the mounting beam (130) is not limited in method or form as long as the mounting beam (130) is structured to be able to selectively pivot or bend relative to the rotating disk (120).

[0042] For example, the connecting bracket (122) and the mounting beam (130) can be rotatably connected via a hinge pin, but it is obvious that various variable connection methods commonly used in the technical field to which the present invention belongs, such as a link structure, a ball joint, or a variable bracket, may also be adopted.

[0043] And on the upper surface of the rotating disk (120), a plurality of anti-detachment rod storage holders (124) are installed to selectively accommodate a plurality of anti-detachment rods (140) described later, so as not to interfere with a plurality of connecting brackets (122).

[0044] The anti-detachment rod storage holder (124) is formed in a cylindrical shape extending vertically upward from the upper surface of the rotating disk (120), and a storage hole (126) is formed inside to which an anti-detachment rod (140) is inserted and coupled.

[0045] Here, when the plurality of anti-detachment rods (140) are vertically folded, they are separated from the plurality of mounting beams (130) and inserted into the anti-detachment rod storage holder (124) for storage. This prevents interference during the folding operation of the plurality of mounting beams (130), while simultaneously preventing the loss of the separated anti-detachment rods (140) and enabling efficient management of storage space.

[0046] A plurality of mounting beams (130) form a seating space in which a PFA tube (T), wound in a roll shape for insertion into a CPVC pipe (not shown), is horizontally and stably mounted and unwound.

[0047] The mounting beam (130) includes a first support arm (132) and a second support arm (134) that are each connected to be foldable to form a seating space corresponding to various winding specifications of the PFA tube (T).

[0048] The first support arm (132) and the second support arm (134) are formed in a bar shape extended to a predetermined length, and the first support arm (132) is rotatably connected to a connecting bracket (122) at one end.

[0049] In other words, one end of the first support arm (132) is installed on a connecting bracket (122) so that it can be horizontally unfolded (unfolded) toward the upper surface of the rotating disk (120) to form a seating space for the PFA tube (T), or folded vertically toward the upper surface of the rotating disk (120) for storage.

[0050] And the other end of the first support arm (132) and the first end of the second support arm (134) are connected via a hinge (136), wherein the hinge (136) is installed so that the second support arm (134) can be folded in the direction of the upper side of the first support arm (132) which is horizontally spread on the upper surface of the rotating disk (120).

[0051] At this time, a support (138) is installed at the lower end of the first support arm (132) facing the hinge (136) to support the second support arm (134) that is horizontally spread out from below, so as to protrude toward the second support arm (134).

[0052] That is, when the second support arm (134) is fully extended in the horizontal direction, the base (138) contacts a portion of the lower end of the second support arm (134) to physically restrict the second support arm (134) from bending downward beyond the horizontal state. Through this, even if a heavy PFA tube (T) is placed on the mounting beam (130), the horizontal state of the mounting beam (130) can be firmly maintained.

[0053] Preferably, an anti-slip pad (not shown) made of rubber or silicone material may be attached to the upper surface of the first support arm (132) and the second support arm (134) to increase friction with the PFA tube (T) and prevent the roll-shaped PFA tube (T) from unnecessarily spinning on the mounting beam (130).

[0054] Meanwhile, a vertical anti-detachment rod (140) that prevents the PFA tube (T) mounted in the seating space from detaching is optionally coupled to the upper part of the second support arm (134), and a plurality of anti-detachment rod fastening holes (142) into which the anti-detachment rod (140) is coupled are formed in the second support arm (134) at predetermined intervals along the length direction of the second support arm (134).

[0055] Here, forming multiple anti-detachment rod fastening holes (142) is intended to allow the installation position of the anti-detachment rod (140) to be variably adjusted in correspondence with the winding diameter of the PFA tube (T), thereby effectively suppressing the flow of the PFA tube (T) having various winding diameters and maintaining a stable unwinding state.

[0056] Furthermore, when stored, the anti-detachment rod (140) is separated from the anti-detachment rod fastening hole (142) and stored in the anti-detachment rod storage holder (124), and the anti-detachment rod (140) can be attached to and detached from the anti-detachment rod fastening hole (142) and the anti-detachment rod storage holder (124) respectively by a screw connection method.

[0057] FIGS. 1 to 3 illustrate a configuration in which four mounting beams (130) are installed at equal intervals, but the number of mounting beams (130) installed is not limited thereto.

[0058] That is, the mounting beam (130) can be installed in multiple numbers of three or five or more depending on the total weight of the PFA tube (T), the winding diameter, or the working environment, and in this case, it is obvious that the number of connecting brackets (122) and anti-detachment rod storage holders (124) can also be changed in correspondence with the number of mounting beams (130).

[0059] Below, the usage state and operation of the PFA tube unwinder (100) according to the present invention, formed as described above, will be briefly explained.

[0060] First, the operator moves the trolley (110) to the work site using the caster (112) and, while the position is fixed using the brake, rotates the plurality of mounting beams (130) that were vertically folded on the rotating disc (120) outward to unfold them horizontally.

[0061] At this time, each second support arm (134) included in the plurality of mounting beams (130) is stably maintained in a horizontal state by the base (138).

[0062] When the deployment of the plurality of mounting beams (130) is completed, the operator places the PFA tube (T), wound in a roll shape, onto the top of the seating space formed by the plurality of mounting beams (130), and then separates the anti-detachment rod (140) that was stored in the anti-detachment rod storage holder (124) of the rotating disk (120).

[0063] Then, the separated anti-detachment rod (140) is screwed into the anti-detachment rod fastening hole (142) at a position corresponding to the winding diameter of the PFA tube (T) and installed vertically.

[0064] When the operator pulls out the end of the PFA tube (T) after the preparation for unwinding the PFA tube (T) is complete, the rotating disk (120) rotates freely in the unwinding direction through the bearing. At this time, the rotational behavior of the rotating disk (120) absorbs the sudden change in tension applied to the PFA tube (T) and maintains a uniform supply speed, thereby preventing the PFA tube (T) from bending and enabling smooth unwinding.

[0065] Meanwhile, when the insertion of the PFA tube (T) into the CPVC pipe (not shown) is completed, the anti-detachment rod (140) is detached and reattached to the anti-detachment rod storage holder (124), and the second support arm (134) and the first support arm (132) are sequentially folded vertically to minimize the upper space of the trolley (110) for storage or transport.

[0066] It is stated that the essential technical concept of the present invention is not limited to the embodiments described above, and encompasses a scope that can be easily proposed by a person skilled in the art through substitution or modification.

[0067] Furthermore, since the terms used in the description of the present invention are selected for the convenience of explanation, in grasping the essential technical concept of the present invention, they should not be limited to their dictionary meanings but should be appropriately interpreted in a sense consistent with the technical concept of the present invention.

Claims

Claim 1 A movable trolley; a rotating disc formed in a horizontal disc shape, having a plurality of connecting brackets formed along the circumferential direction on the upper surface, and installed on the upper surface of the trolley so as to be freely rotatable in the horizontal direction on the lower surface side; and a plurality of mounting beams installed on each of the connecting brackets so as to be horizontally unfolded toward the upper surface side of the rotating disc or folded vertically toward the upper surface of the rotating disc, and forming a seating space in which a PFA tube wound in a roll shape is horizontally mounted and unwound when unfolded; wherein each of the mounting beams includes a first support arm, one end of which is rotatably installed on the connecting bracket; and a second support arm, one end of which is mutually foldably connected to the other end of the first support arm via a hinge, wherein the hinge is installed so that the second support arm can be folded toward the upper direction of the first support arm horizontally unfolded toward the upper surface of the rotating disc. Claim 2 delete Claim 3 A PFA tube unwinder according to claim 1, wherein a support member is installed at the lower end of the other end of the first support arm to support and maintain a horizontal state by supporting the lower end of the second support arm that is unfolded in a horizontal direction, and is installed so as to protrude toward the second support arm. Claim 4 A PFA tube unwinder according to claim 1, wherein a plurality of anti-detachment rod fastening holes are formed spaced apart along the longitudinal direction of the second support arm, wherein a vertical anti-detachment rod that prevents the PFA tube mounted in the seating space from detaching is selectively coupled to the upper part of the second support arm. Claim 5 In claim 4, a plurality of anti-detachment rod storage holders are formed on the upper surface of the rotating disk, into which the anti-detachment rod separated from the second support arm is inserted and stored when the mounting beam is folded vertically, wherein the anti-detachment rod storage holders are formed in a cylindrical shape extending vertically upward from the upper surface of the rotating disk, a PFA tube unwinder.

Images