adhesive tape cutter

Abstract

To prevent the leading end of an adhesive tape peeled off from a cutting blade from being wound around the adhesive tape roll again after cutting the adhesive tape pulled forward from the adhesive tape roll, making it difficult to pull out the leading end. [Solution] The adhesive tape cutter (A1) comprises a tape roll holder (11) for rotatably supporting an adhesive tape roll (R) and a cutting blade (21) for an adhesive tape (12), and is used to cut the adhesive tape (12) pulled forward from the adhesive tape roll (R) inserted and set in the tape roll holder (11) to any desired length using the cutting blade (21). A partition member (23) is interposed between the cutting blade (21) and the adhesive tape roll (R) at the front and rear, and the partition member (23) is provided with an adhesive tape pull-out guide opening (26) whose opening upper edge (26a) is positioned lower than the installation position (P) of the cutting blade (21).

Description

[Technical Field]

[0001] The present invention relates to an adhesive tape cutter for cutting transparent cellophane tape, OPP tape, craft tape, and various other adhesive tapes. [Background technology]

[0002] This type of adhesive tape roll, which is a product in which adhesive tape is tightly wound around a paper core, is inserted and set into the tape roll holder of the tape cutter body of the adhesive tape cutter so that it can be inserted and removed freely, and the tip of the adhesive tape is pulled out toward the cutting blade and cut to the desired length for use.However, after cutting, the adhesive tape may peel off from the cutting blade and re-wrap around the adhesive tape roll on the tape roll holder.

[0003] In such cases, since the adhesive tape is thin or transparent, it is difficult to identify the leading end of the adhesive tape to be next pulled out from the adhesive tape roll, and the operation of peeling off and pulling out the leading end from the adhesive tape roll is extremely cumbersome, requiring a lot of time and effort.

[0004] Countermeasures for such problems are disclosed in Patent Documents 1 to 4. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-240297 [Patent Document 2] Japanese Patent Application Laid-Open No. 2008-81315 [Patent Document 3] Japanese Patent Application Laid-Open No. 2016-34874 [Patent Document 4] Utility Model Registration No. 3101084 Summary of the Invention [Problem to be solved by the invention]

[0006] First, in the "adhesive tape cutter" described in Patent Document 1, a push-up part (3) is provided between the front and rear of the cutter blade tip (2) and the tape peel start part (1), which pushes up the tape from its back surface to its front surface, thereby folding the tape in a V-shape and forming a folded tab that is easy to grip.

[0007] However, while this has the advantage of requiring only a simple configuration, when using it, when pinching the tape while pressing it from the left and right with the thumb and index finger, it is not permitted to pinch the entire width of the tape or grasp the pushing-up portion (3), so a very cumbersome special technique is required.

[0008] As a result, not only is it difficult for anyone to quickly form a tab, but the push-up portion (3) pushes up the center of the tape width and stands taller than the plane connecting the peel start portion (1) and the cutter blade tip (2), making it dangerous to use and posing a risk of accidentally tearing the tape. Furthermore, when the tape is used on office supplies or packaging, the next tab will be exposed and unsightly if it is left as is, and unless it is cut off, even if it is a hassle, it will easily peel off from the previous tab.

[0009] Next, in the "adhesive tape cutter" described in Patent Document 2, a fixed roller (14) and a guide roller (16) are installed in parallel between the tape cutting blade (12) and the adhesive tape roll (21) in front and behind. However, in use, the guide roller (16) is moved until it comes into contact with the fixed roll (14) so ​​that the adhesive tape (22) can be pinched with the thumb and index finger, and the adhesive tape (22) is bent to form a folded-back non-adhesive portion (tab) (23).

[0010] This requires the use of a complicated and special procedure, and the configuration for this requires the use of a return spring (17) that constantly moves the guide roller (16) in a direction approaching the tape cutting blade (12), and both rollers (14) and (16) that have a gently sloping center.

[0011] Furthermore, as with the above-mentioned configuration of Patent Document 1, there is also the problem that the folded-back non-adhesive portion (tab) (23) of the adhesive tape (22) is easily peeled off unless it is cut, even if it is troublesome, after the adhesive tape (22) has been applied and used. The formation of the folded-back non-adhesive portion (tab) (23) that serves as a grip and the cutting of the same means a reduction in the adhesive surface area of ​​the adhesive tape (22), which is undesirable as it is wasteful.

[0012] Furthermore, the "tape cutter" described in Patent Document 3 is equipped with not only the cutting blade (31) and the attachment portion (41a) of the cut adhesive tape (11), but also a biasing member (40) that biases the tip portion (12) of the cut adhesive tape (11) in a direction away from the cutting blade (31). This has the advantage that, unlike Patent Documents 1 and 2, the troublesome special procedures are not required for use, and it is sufficient to simply pull out the adhesive tape (11) from the roll tape (10) to the cutting position with the cutting blade (31) while pressing it against the attachment portion (41a).

[0013] However, the biasing member (40) for separating the tip (12) of the cut adhesive tape (11) from the cutting blade (31) must be interposed between the application portion (41a) and the cutting blade (31), and the tip edge (45a) of the elastic piece (45) extending from the biasing member (40) must be bent and deformed by pressing down on the adhesive tape (11). This requires a complex and specialized configuration, and coupled with the fact that the biasing member (40) must be made as a separate part and attached to the cutting portion (20), mass production efficiency cannot be expected.

[0014] In this case, as soon as the restoring force of the flexural deformation is eliminated by cutting the adhesive tape (11), the tip (12) rises up and away from the cutting blade (31). Therefore, if the flexural deformation force based on the curved shape of the elastic piece (45) is strong, it will be difficult to bring the adhesive tape (11) into contact with the cutting blade (31). On the other hand, if the flexural deformation force is weak, it will be difficult for the tip (12) after cutting to separate from the cutting blade (31), which will result in problems such as insufficient quality and durability.

[0015] Furthermore, the "tape cutter" described in Patent Document 4 appears to be a handheld type for use in packaging, and the tape being drawn out is not shown. However, in the installed state shown in Figures 3B, where the wound tape body (1) is inserted between the cutting blade support (8) pulled up against the elastic pressure of the spring (6) and the tape support (2), the pair of left and right tape guides (claws) (11) are located above the outer periphery of the wound tape body (1), so the leading edge of the tape cut by the cutting blade (7) will inevitably stick to the outer periphery of the wound tape body (1) again. This is because the tape is located below the tape guides (11), and there is no partition material to catch the tape peeled off from the cutting blade (7) after cutting.

[0016] Even if we assume that the tape pulled out from the rolled tape body (1) is passed between the arm (4) and the tape guide (11), and that the tape peeled off from the cutting blade (7) after cutting is received from below by the tape guide (11), the tape guide (11) is not a partition member that runs completely across the width of the tape, but is installed as a pair of separate left and right guides, so the tape after cutting falls out and hangs down through the gap between them (in other words, the interrupted space in the center), and then wraps around the outer surface of the rolled tape body (1) that is close to it again, which does not help to solve the problem. [Means for solving the problem]

[0017] The present invention aims to solve such problems, and in order to achieve this aim, claim 1 provides: A pair of opposing cutter bodies,An adhesive tape cutter includes a tape roll holder that rotatably supports an adhesive tape roll, and a cutting blade for the adhesive tape, and is used to cut adhesive tape pulled forward from an adhesive tape roll inserted into the tape roll holder to any desired length by the cutting blade,

[0018] Between the cutting blade and the adhesive tape roll The partition material interposed between the two cutter bodies is used as a partition wall that spans the left and right sides of the two cutter bodies. the Partition wall The upper edge of the opening is closer to the cutting blade than the Only a certain difference in elevation It will be in a low position A rectangular slit is formed to guide the adhesive tape. It is characterized by the fact that

[0019] In claim 2 A fingertip insertion notch is cut out between the cutting blades and the tape roll holder in both cutter bodies, the notch being approximately U-shaped in side view,

[0020] a dowel receiving tube protruding inward from near the upper end of the rear edge of the opening of the fingertip insertion notch cut out in either the left or right cutter body;

[0021] The dowel, which is removably inserted and fitted into the dowel receiving tube, is provided to protrude inward from a corresponding position on the other cutter body, and

[0022] A partition wall having a rectangular adhesive tape pull-out guide slit with a fixed opening width and opening depth is formed and extends continuously from the dowel receiving tube along the rear edge of the opening of the fingertip insertion notch to the notch depth position of the fingertip insertion notch, thereby maintaining the partition wall in a bridging state across the left and right sides of both cutter bodies.

[0023] In claim 3, there is provided an adhesive tape cutter comprising a pair of opposing cutter bodies on the left and right, a tape roll holder for rotatably supporting an adhesive tape roll, and a cutting blade for the adhesive tape, the adhesive tape being pulled out forward from the adhesive tape roll inserted into the tape roll holder and set therein, and being cut to an arbitrary length by the cutting blade.

[0024] the partition material interposed between the cutting blade and the adhesive tape roll in the front and rear is a pair of upper and lower partition bars that are laid horizontally between the left and right sides of both cutter bodies, and the lower edge of the upper partition bar that maintains the constant vertical gap is positioned at a constant height difference lower than the installation position of the cutting blade to define a rectangular tunnel-shaped adhesive tape pull-out guide opening;

[0025] Moreover, the two partition bars are inserted and fitted freely into a dowel receiving tube projecting inward from either the left or right cutter body and into a dowel projecting inward from a corresponding position on the other cutter body, thereby completing the two cutter bodies in a combined state.

[0026] Claim 4 is characterized in that the dowel receiving tube, which consists of either a pair of upper and lower partition bars or only the upper partition bar, is made into a cylindrical roller, and the dowel corresponding to the dowel receiving tube is used as the roller support axis, with the roller supported so as to be freely rotatable between the left and right sides of the two cutter bodies.

[0027] In claim 5, the cutter includes a cutter body on either the left or right side, a tape roll holder that projects to one side from the rear of the cutter body and rotatably supports an adhesive tape roll, a cutting blade for adhesive tape attached to a cutting blade mounting base that also projects to the same side as the tape roll holder from the front upper end of the cutter body, and a side cover for the cutting blade mounting base.

[0028] An adhesive tape cutter is used to cut adhesive tape pulled out forward from an adhesive tape roll inserted into the tape roll holder to any desired length by using its cutting blade,

[0029] the partition member interposed between the front and rear of the cutting blade and the adhesive tape roll is a pair of upper and lower free-wheeling rollers that are hung laterally between the left and right of the cutter body and the side cover of the cutting blade mounting base, and the lower edge of the arc of the upper free-wheeling roller that maintains the constant vertical gap is positioned at a constant height difference lower than the installation position of the cutting blade to define a rectangular tunnel-shaped adhesive tape drawing guide opening;

[0030] Moreover, the two free-rolling rollers each consist of a pair of pivots that protrude inward from the cutter body and the side cover of the cutting blade mounting base, respectively, and a cylindrical roller that is inserted and fitted onto the pivots, and the cutter body and the side cover of the cutting blade mounting base are finished in an assembled state.

[0031] Claim 6 is characterized in that a pair of upper and lower free-wheeling rollers are arranged and installed with a positional deviation in the front-to-rear direction, with the lower free-wheeling roller being at the front position away from the adhesive roll tape. [Effects of the Invention]

[0032] According to the above configurations of claims 1, 3 and 5, a rectangular adhesive tape pull-out guide slit or adhesive tape pull-out guide opening with an upper edge of the opening that is lower than the installation position of the cutting blade is provided in the partition material interposed between the front and rear of the cutting blade and the adhesive tape roll, so that when adhesive tape is pulled out from the adhesive tape roll on the tape roll holder towards the cutting blade, the front surface (non-adhesive side) of the adhesive tape will always come into contact with the upper edge of the opening of the adhesive tape pull-out opening, and the back surface (adhesive side) of the adhesive tape will never come into contact with the upper edge of the opening, and as a result, the adhesive tape can be pulled out smoothly and conveniently at all times.

[0033] Furthermore, even if the tip of the adhesive tape cut by the cutting blade peels off from the cutting edge and hangs down, the back surface (adhesive surface) of the adhesive tape will always get caught on the lower edge of the opening of the adhesive tape pull-out guide slit or adhesive tape pull-out guide port and will be received by the partition material (partition wall) where the slit or guide port is provided, so there is no risk of the tape being wound back up to the position of the adhesive tape roll and sticking to the adhesive tape roll again.

[0034] As a result, even if the adhesive tape is transparent or thin, the leading end of the tape to be pulled out can be seen, and the leading end can be quickly pulled out with the fingertips of the operating hand, allowing for easy and efficient paperwork, packaging, and other necessary tasks that require the use of adhesive tape.

[0035] Furthermore, if the configurations of claims 2, 3 and 5 are adopted, the formation of the above-mentioned partition material (partition wall) directly contributes to the finishing of the cutter body, which has the advantage of allowing the necessary configuration to be rationally simplified and achieving mass production effects. [Brief explanation of the drawings]

[0036] [Figure 1] 1 is a side view showing an adhesive tape cutter according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a plan view of FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. [Figure 5] FIG. 5 is a cross-sectional view taken along line 5-5 in FIG. 2. [Figure 6] FIG. 6 is a side view showing an adhesive tape cutter according to a second embodiment of the present invention. [Figure 7] FIG. 7 is a plan view of FIG. 6. [Figure 8] FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 6. [Figure 9] FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. 6. [Figure 10] FIG. 10 is a cross-sectional view taken along line 10-10 in FIG. 7. [Figure 11] FIG. 10 is a side view showing an adhesive tape cutter according to a third embodiment of the present invention. [Figure 12] FIG. 12 is a plan view of FIG. [Figure 13] FIG. 12 is a bottom view of FIG. [Figure 14] FIG. 14 is an enlarged cross-sectional view taken along line 14-14 in FIG. [Figure 15] 15 is a cross-sectional view taken along line 15-15 in FIG. 14. DETAILED DESCRIPTION OF THE INVENTION

[0037] Various embodiments of the present invention will be described in detail below with reference to the drawings. First, in Figures 1 to 5 showing a desktop adhesive tape cutter for office use (A1) according to a first embodiment, (10L) and (10R) are a pair of opposing cutter bodies on the left and right, which are integrally molded from polypropylene, ABS resin, or other hard synthetic resin into a substantially rectangular frame or wall shape in side view.

[0038] Moreover, the combination of the two cutter bodies (10L) (10R) forms a tape roll holder (11) for rotatably supporting the adhesive tape roll (R), a cutting table (C) for cutting the adhesive tape (12) pulled out from the adhesive tape roll (R) to any desired length, and the like.

[0039] That is, the thick core tube (13) that protrudes inward from a position slightly toward the rear of either the left or right cutter body (10L) is inserted into the thick core tube (14) that protrudes inward from a corresponding position on the remaining cutter body (10R), the short dowel (15) that protrudes inward from the front upper corner position of either the left or right cutter body (10L) is inserted into a dowel receiving tube (16) provided on the cutting table (C) at a corresponding position on the other cutter body (10R), and further the long dowel (17) that protrudes inward from the front lower corner position of either the left or right cutter body (10L) is inserted into a dowel receiving tube (18) that protrudes inward from a corresponding position on the other cutter body (10R), all of which are freely inserted and fitted together to achieve the combined state shown in the figure.

[0040] When assembling the core tubes (13) and (14), an adhesive tape roll (R) can be inserted and set into the tape roll holder (11) formed by combining the core tubes (13) and (14), and the adhesive tape roll (R) can also be replaced with a new one. In the illustrated first embodiment, the periphery of the set adhesive tape roll (R) is open. The adhesive tape roll (R) is made of a transparent adhesive tape (cellophane tape) (12) with a constant width of approximately 15 mm tightly wound into a roll, and it goes without saying that the back side of the adhesive tape (12) forms the adhesive surface.

[0041] The cutting table (C) for the adhesive tape (12) is installed on one of the cutter bodies (10R) which is provided with a receiving tube (16) for the short dowel (15). The arc-shaped upper surface of the cutting table (C) serves as a tape receiving seat (19) to temporarily attach the backside of the adhesive tape (12) pulled out from the adhesive tape roll (R) to enable stable cutting.

[0042] (20) is a cutting blade mounting groove formed between the tape receiving seat (19) on the cutting table (C) and the above-mentioned tab receiving tube (16) above and below, and since it opens sideways, the above-mentioned tab (15) is inserted and fitted into the tab receiving tube (16) and before combining the pair of left and right cutter bodies (10L) (10R), a cutting blade (21) made of a separate metal plate such as stainless steel can be inserted sideways into the cutting blade mounting groove (20) and installed in a state where only its serrated cutting edge portion (21a) is exposed and facing diagonally upward and forward, and it can also be removed and replaced.

[0043] (22)(22) is a fingertip insertion notch that is located between the front and rear of the cutting table (C) and the tape roll holder (11) and is cut out in the pair of left and right cutter bodies (10L) (10R) and is approximately U-shaped in side view.The fingertip of the operating hand can be inserted through this notch to peel the cut adhesive tape (12) from the cutting blade (21) and the tape receiving seat (19) and pull out an appropriate length.

[0044] Furthermore, (23) is a partition material that is horizontally installed between the left and right sides of both cutter bodies (10L) and (10R) and is interposed between the front and rear of the cutting blade (21), particularly the cutting edge portion (21a) of the cutting blade (21) inserted and installed in the cutting blade mounting groove (20) of the cutting table (C), and the adhesive tape roll (R) inserted and set in the tape roll holder (11), and in the first embodiment, is embodied as a plate-shaped partition wall.

[0045] In other words, a dowel receiving tube (24) parallel to the dowel receiving tube (16) of the cutting table (C) protrudes inward from near the upper end of the rear edge of the opening of the fingertip insertion notch (22) in one of the cutter bodies (10R) provided on the cutting table (C), and a short dowel (25) that can be inserted and fitted into the dowel receiving tube (24) in a removable manner protrudes inward from a corresponding position on the remaining cutter body (10L).

[0046] The partition wall (partition material) 23 extends continuously from the dowel receiving tube 24 along the rear edge of the opening of the fingertip insertion notch 22 up to the depth of the U-shaped notch, thereby bridging the gap between the left and right cutter bodies 10L and 10R. However, the lower end of the partition wall (partition material) 23 may be positioned lower than the depth of the fingertip insertion notch 22.

[0047] Moreover, the partition wall (23) has a slit formed therein that serves as an adhesive tape pull-out guide opening (26) for pulling out and guiding the adhesive tape (12) from the adhesive tape roll (R) on the tape roll holder (11) toward the cutting blade (21), and that has a rectangular shape when viewed from the front to back, preferably a rectangular shape that is elongated in the left to right direction, as shown in Figure 4. (W) indicates the opening width of the slit (26), and (D) indicates the opening depth.

[0048] In this case, the upper edge (26a) of the rectangular slit (adhesive tape pull-out guide opening) (26) is always set at a position lower than the installation position of the cutting blade (21), particularly the position (P) of its cutting edge (21a), as shown in Figure 5, and a certain height difference (H) is provided.

[0049] This prevents the back surface (adhesive surface) of the adhesive tape (12) being pulled out from the adhesive tape roll (R) from coming into contact with not only the lower edge (26b) of the opening of the slit (26) but also the upper edge (26a) of the opening, and keeps the front surface (non-adhesive surface) of the adhesive tape (12) in contact with the upper edge (26a) of the opening of the slit (26), thereby ensuring that the tape can be pulled out lightly and smoothly at all times to the cutting blade (21).

[0050] Furthermore, the slit (26) has an opening lower edge (26b), and the lower end of the partition wall (23) is located at a lower position below this. Therefore, even if the back surface (adhesive surface) of the adhesive tape (12) cut by the cutting blade (21) peels off from the blade tip (21a) or the tape receiving seat (19) of the cutting table (C) and hangs down, it will always be caught on the opening lower edge (26b) of the slit (26) and received by the partition wall (23). This eliminates the problem of the adhesive tape (12) rewinding back to the position of the adhesive tape roll (R) and sticking to the adhesive tape roll (R) again, making it impossible to know where the next tip of the tape to be pulled out is.

[0051] As can be seen from Figures 2 and 5, the partition wall (partition material) (23) in the first embodiment is installed at a slight incline when viewed from the side, but it may also be installed vertically and cross between the left and right sides of both cutter bodies (10L) and (10R).

[0052] Next, FIGS. 6 to 10 show a desktop adhesive tape cutter for office use (A2) according to a second embodiment of the present invention, and the main points of its configuration that differ from the first embodiment shown in FIGS. 1 to 5 are as follows.

[0053] That is, in the adhesive tape cutter (A2) of the second embodiment, a tape roll holder (11) that is much thinner than that of the first embodiment is installed in the rear half of the pair of left and right cutter bodies (10L) and (10R), and the adhesive tape roll (R) inserted into this is entirely closed except for the front. The adhesive tape (transparent cellophane tape) (12) in the adhesive tape roll (R) has a fixed width of, for example, about 18 mm.

[0054] In addition, a cutting table (C) is provided at the front upper end of both cutter bodies (10L) (10R), and the adhesive tape cutting blade (21) is not a separate part but is molded integrally with the cutting table (C) from hard synthetic resin, and its serrated cutting edge (21a) is also exposed facing diagonally upward toward the front.

[0055] Furthermore, the fingertip insertion notches (22) (22) located between the cutting table (C) equipped with the cutting blade (21) and the tape roll holder (11) are cut out in a pair of left and right cutter bodies (10L) (10R) in a substantially U-shape in side view, but in the second embodiment, as is clear from Figures 6 and 10, the fingertip insertion notches (22) (22) are formed by studs (neutral walls) (27) ( The fingertips of the operating hand can be inserted into the front fingertip insertion notches (22F)(22F) and the rear fingertip insertion notches (22R)(22R) as needed, to pass the adhesive tape (12) pulled out from the adhesive tape roll (R) through the adhesive tape pull-out guide opening described below, or peel the cut adhesive tape (12) from the cutting blade (21) or the tape receiving seat (19) of the cutting table (C).

[0056] In the second embodiment, a pair of upper and lower partition bars (28a) (28a) serving as partition members are fixed horizontally, preferably parallel to each other, between the opposing left and right studs (neutral walls) (27) (27), and the gap between the upper and lower partition bars (28a) (28a) is partitioned into a tunnel-like shape that functions as an adhesive tape pull-out guide port (28).

[0057] The pair of upper and lower partition bars (28a) (28a) are protruding inward from either the left or right cutter body (10R) as shown in Figure 9, just like the dowel receiving tube (24) equipped with the partition wall (23) shown in the first embodiment above, and a short dowel (25) protruding inward from the remaining cutter body (10L) is inserted and fitted into the dowel receiving tube (24) so ​​as to be freely removable, thereby forming a tunnel-shaped adhesive tape withdrawal guide opening (28) when the two cutter bodies (10L) (10R) are combined.

[0058] The lower edge of the upper partition bar (28a) and the upper edge of the lower partition bar (28b), which are the partition materials in the second embodiment, correspond, so to speak, to the upper edge (26a) and lower edge (26b) of the opening of the slit (adhesive tape pull-out guide opening) (26) in the first embodiment, and these upper and lower pairs define a rectangular adhesive tape pull-out guide opening (28) having a constant opening width (W) and opening depth (D).

[0059] Moreover, the upper partition bar (28a) is hung horizontally at a position lower than the cutting edge (21a) of the cutting blade (21), in particular, and the lower partition bar (28b) which is hung horizontally almost parallel to it does not have any interrupted space (gap / notch) which could allow the cut adhesive tape (12) to fall out.

[0060] Therefore, the configuration of the second embodiment can also achieve the same functions and effects as those of the first embodiment. Since other configurations of the second embodiment are substantially the same as those of the first embodiment, the same reference numerals as those in Figures 1 to 5 are used in Figures 6 to 10 and detailed description thereof will be omitted. However, both the upper partition bar (28a) and the lower partition bar (28b), or only one of the upper partition bars (28a), may be used as free-rolling rollers and axially mounted between the left and right sides of the cutter bodies (10L) and (10R).

[0061] In other words, the dowel receiving tube (24) that forms the partition bars (28a) and (28b) is replaced with a cylindrical roller, and the dowel (25) is replaced with a pair of roller support shafts on the left and right, and the rollers are supported by the two roller support shafts so that they can rotate freely. This has the advantage of making it possible to more smoothly and stably pull out the adhesive tape (12) from the adhesive tape roll (R) toward the cutting blade (21).

[0062] In the second embodiment, the partition bars 28a and 28b have a circular cross section as shown in FIG. 10, but either or both of the upper and lower bars may have a polygonal cross section. Furthermore, although the partition bars 28a and 28b are installed on the same vertical axis, they may be arranged side by side with a slight offset in the front-to-rear direction.

[0063] Furthermore, FIGS. 11 to 15 show a handy adhesive packaging tape cutter (A3) according to a third embodiment of the present invention, and the main structural differences from the first embodiment shown in FIGS. 1 to 5 are as follows.

[0064] That is, in the adhesive tape cutter (A1) of the first embodiment, the tape roll holder (11) of the adhesive tape roll (R) is fixed and horizontally supported by a pair of opposing cutter bodies (10L) (10R) on the left and right, but in the case of the third embodiment, there is only one cutter body (10) on either the left or right, and the thick core tube tape roll holder (11) is installed in a cantilevered manner, protruding from the rear half of the cutter body (10).

[0065] The adhesive tape (12) of the adhesive tape roll (R) that is inserted and set freely into the tape roll holder (11) from its protruding tip is transparent OPP tape, kraft tape, or other packaging tape, and has a fixed width of approximately 50 mm.

[0066] In addition, the cutter body (10) has a tapered shape when viewed from the side as shown in Figure 11, and the top cover (30) and the mounting base (31) for the cutting blade (21) are formed to protrude from the upper front end position toward the same side as the core tube that becomes the tape roll holder (11).

[0067] (32) is a side cover of the mounting base (31), which is parallel to the cutter body (10), and a dowel (33) protruding inward from this is adapted to be inserted and fitted freely into a dowel receiving groove (34) formed at the protruding tip of the mounting base (31). The space between the mounting base (31) and the tape roll holder (11) in the front and rear directions is opened as a fingertip insertion space (S) into which the fingertips of the operating hand can be inserted from above and below.

[0068] The front end of the base of the top cover (30) is inserted into and engaged with a pair of left and right pivot pins (35) (35) that protrude outward from corresponding positions on the side cover (32) of the mounting base (31) and the cutter body (10), thereby enabling the top surface of the adhesive tape roll (R) to be opened and closed.

[0069] A cutting blade (21) made of a metal plate such as stainless steel is attached to the front end of the mounting base (31), and in the third embodiment, as a handy adhesive packaging tape cutter (A3), the cutting edge (21a) of the cutting blade (21) is exposed and faces diagonally downward toward the front as shown in Figure 14. While holding the tape cutter (A3) in one hand, the adhesive tape (12) can be easily and conveniently cut during or after packaging.

[0070] Furthermore, in the third embodiment, a pair of upper and lower free-wheeling rollers 36a, 36b serving as partition members are interposed between the mid-height position of the front part of the cutter body 10 and the corresponding position of the side cover 32 on the mounting base 31. The free-wheeling rollers 36a, 36b are mounted in parallel below the mounting base 31, and the gap between them forms an adhesive tape pull-out guide opening 36, which is also rectangular when viewed from the front and rear.

[0071] (37)(37)(38)(38) are a pair of pivots supporting both ends of each of the free-wheeling rollers (36a)(36b), and are provided so as to protrude inward from the cutter body (10) and the side cover (32) of the mounting base (31) in a corresponding direction. Cylindrical rollers (36a)(36b) are inserted and fitted into these so as to be free to rotate, but the lower free-wheeling roller (36b) may be fixed horizontally as an alternative shaft.

[0072] The arc-shaped lower edge of the upper idler roller 36a and the arc-shaped upper edge of the lower idler roller 36b correspond to the upper and lower edges 26a and 26b of the opening of the slit (adhesive tape pull-out guide opening) 26 in the first embodiment, and even if the cutting edge 21a of the cutting blade 21 faces obliquely downward, the upper idler roller 36a is positioned lower than the cutting edge 21a of the cutting blade 21. Other configurations are essentially the same as those in the first embodiment, and therefore the same functions and effects as those in the first embodiment can be achieved. The same reference numerals as in Figures 1 to 5 are used in Figures 11 to 15, and other detailed descriptions of the third embodiment will be omitted.

[0073] In the third embodiment, the pair of upper and lower free-wheeling rollers (36a) and (36b) are arranged in a stepped manner, so to speak, with a misalignment in the front-to-rear direction, preferably with the lower free-wheeling roller (36b) positioned at the front away from the adhesive tape roll (R). However, both free-wheeling rollers (36a) and (36b) may also be arranged on the same vertical axis.

[0074] In any of the first to third embodiments, when using the adhesive tape cutter (A1), (A2), (A3), if the adhesive tape (12) is pulled out from the adhesive tape roll (R) inserted into the tape roll holder (11) toward the cutting edge (21a) of the cutting blade (21), in particular, there is no risk that the back surface (adhesive surface) of the adhesive tape (12) will come into contact with the upper edge (26a) of the opening of the slit (26), which is the adhesive tape pull-out guide port, the upper partition bar (28a), or the upper free-wheeling roller (36a), and the front surface (non-adhesive surface) will always come into contact, so the pulling-out operation can always be performed lightly and smoothly.

[0075] Furthermore, since there are no interrupted spaces (notches / gaps) in the lower edge (26b) of the slit (26) in the partition member (partition wall), or in the lower partition bar (28b) and lower freewheel roller (36b) that form the partition member, there is no risk of the adhesive tape (12) cut by the cutting blade (21) falling out of the interrupted spaces. Even if the adhesive tape (12) peels off from the cutting edge (21a) of the cutting blade (21) and hangs down, its back surface (adhesive surface) will be caught and received by the lower edge (26b) of the opening, lower partition bar (28b), and lower freewheel roller (36b), and will not return to the position of the adhesive tape roll (R) and wind around it. Even if the adhesive tape (12) is thin and transparent, the leading edge of the tape to be pulled out can be clearly seen, allowing for quick and convenient pulling.

[0076] Furthermore, the partition wall (23) and the pair of upper and lower partition bars (28a) (28b) serving as the partition material in the first and second embodiments combine the two cutter bodies (10L) (10R) by inserting and fitting their dowel receiving tubes (24) and dowels (25), and the pair of upper and lower free-wheeling rollers (36a) (36b) serving as the partition material in the third embodiment also combine the cutter body (10) and the side cover (32) located in front of it by inserting and fitting their rollers and pivots.

[0077] In other words, the formation of the partition material directly contributes to the finishing of the cutter bodies 10, 10L, and 10R, so the required structure can be rationally simplified, resulting in outstanding mass productivity.

[0078] Although various embodiments of the present invention have been described, none of the contents limit the scope of the claims of the present invention, and various modifications can be made without departing from that scope. [Explanation of symbols]

[0079] (10L)(10R) Cutter body (11) Tape roll holder (12) Adhesive tape (21)... Cutting blade (21a)...Blade tip (22) Fingertip insertion notch (23) Partition wall (24) Dowel receiving tube (25) Dowel (26) Slit for adhesive tape pull-out guide (26a)...Top edge of opening (26b)...Lower edge of opening (27) Stud (neutral wall) (28) Adhesive tape drawer guide opening (28a) Upper partition bar (28b) Lower partition bar (31) Cutting blade mounting base (32) Side cover (36) Adhesive tape drawer guide opening (36a) Upper idler roller (36b) Lower idler roller (37)(38) Axis (A1)(A2)(A3)··Adhesive tape cutter (C)... Cutting table (D) Opening depth (gap between upper and lower) (W) Opening width (H)········Height difference (P) Cutting blade installation location (R) ········Adhesive tape roll

Claims

1. An adhesive tape cutter (A1) comprising a pair of opposing cutter bodies (10L) (10R), a tape roll holder (11) for rotatably supporting an adhesive tape roll (R), and a cutting blade (21) for an adhesive tape (12), wherein the adhesive tape (12) is pulled forward from the adhesive tape roll (R) inserted into the tape roll holder (11) and is cut to any desired length by the cutting blade (21), An adhesive tape cutter characterized in that the partition material interposed between the front and rear of the cutting blade (21) and the adhesive tape roll (R) is a partition wall (23) that spans the left and right sides of both cutter bodies (10L) and (10R), and a rectangular adhesive tape pull-out guide slit (26) is formed in the partition wall (23) so that its upper edge (26a) is positioned lower than the installation position (P) of the cutting blade (21) by a certain height difference (H).

2. Fingertip insertion notches (22) (22) that are approximately U-shaped in side view are cut out between the cutting blades (21) and the tape roll holder (11) in both cutter bodies (10L) (10R), A dowel receiving tube (24) is provided inwardly protruding from the upper end of the rear edge of the opening of the fingertip insertion notch (22) cut into either the left or right cutter body (10R), A dowel (25) that is removably inserted and fitted into the dowel receiving tube (24) is provided to protrude inward from a corresponding position on the other remaining cutter body (10L), and 2. An adhesive tape cutter according to claim 1, wherein a partition wall (23) having a rectangular adhesive tape pull-out guide slit (26) with a constant opening width (W) and opening depth (D) formed therein extends continuously from the dowel receiving tube (24) along the rear edge of the opening of the fingertip insertion notch (22) to the depth position of the fingertip insertion notch (22), thereby maintaining the partition wall (23) in a bridging state across the left and right sides of both cutter bodies (10L) and (10R).

3. An adhesive tape cutter (A2) comprising a pair of opposing cutter bodies (10L) (10R), a tape roll holder (11) for rotatably supporting an adhesive tape roll (R), and a cutting blade (21) for an adhesive tape (12), wherein the adhesive tape (12) is pulled forward from the adhesive tape roll (R) inserted into the tape roll holder (11) and cut to any desired length by the cutting blade (21). The partition material interposed between the cutting blade (21) and the adhesive tape roll (R) in the front and rear is a pair of upper and lower partition bars (28a) (28b) that are laid horizontally between the left and right sides of both cutter bodies (10L) (10R), and a rectangular tunnel-shaped adhesive tape pull-out guide opening (28) is defined and formed, with the lower edge of the upper partition bar (28a) that maintains a constant vertical gap (D) being located at a position lower than the installation position (P) of the cutting blade (21) by a constant height difference (H), Moreover, the adhesive tape cutter is characterized in that the two partition bars (28a) (28b) are inserted and fitted freely into a dowel receiving tube (24) protruding inward from either the left or right cutter body (10R) and into a dowel (25) protruding inward from a corresponding position on the remaining cutter body (10L), thereby finishing the two cutter bodies (10L) (10R) in a combined state.

4. 4. An adhesive tape cutter according to claim 3, characterized in that the dowel receiving tube (24), which is either one of the pair of upper and lower partition bars (28a) (28b) or only the upper partition bar (28a), is made into a cylindrical roller, and the dowel (25) corresponding to the dowel receiving tube (24) serves as the roller support shaft, and the roller is supported so as to be freely rotatable between the left and right sides of the two cutter bodies (10L) (10R).

5. A cutter body (10) on either the left or right side, a tape roll holder (11) that extends to one side from the rear of the cutter body (10) and rotatably supports an adhesive tape roll (R), an adhesive tape cutting blade (21) attached to a cutting blade mounting base (31) that also extends to the same side as the tape roll holder (11) from the front upper end of the cutter body (10), and a side cover (32) for the cutting blade mounting base (31), The adhesive tape cutter (A3) is used to sequentially cut the adhesive tape (12) pulled out forward from the adhesive tape roll (R) inserted into the tape roll holder (11) to any desired length using its cutting blade (21). The partition material interposed between the front and rear of the cutting blade (21) and the adhesive tape roll (R) is a pair of upper and lower free-wheeling rollers (36a) (36b) that are laid horizontally between the left and right of the cutter body (10) and the side cover (32) of the cutting blade mounting base (31), and a rectangular tunnel-shaped adhesive tape pull-out guide opening (36) is defined and formed by the arc-shaped lower edge of the upper free-wheeling roller (36a) that maintains a constant vertical gap (D) at a position that is lower by a constant height difference (H) than the installation position (P) of the cutting blade (21), Moreover, the two free-rolling rollers (36a) and (36b) each comprise a pair of pivots (37) (37) (38) (38) respectively protruding inward from the cutter body (10) and the side cover (32) of the cutting blade mounting base (31), and cylindrical rollers (36a) and (36b) inserted and fitted onto the pivots (37) (37) (38) (38), and the cutter body (10) and the side cover (32) of the cutting blade mounting base (31) are finished in a combined state.

6. An adhesive tape cutter as described in claim 5, characterized in that a pair of upper and lower free-wheeling rollers (36a) (36b) are arranged and installed in a state of misalignment in the front-to-back direction so that the lower free-wheeling roller (36b) is in a front position away from the adhesive roll tape (R).

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