Blade replacing mechanism of paper cutter

Abstract

The utility model relates to the technical field of paper cutters, and discloses a paper cutter blade replacing mechanism which comprises a mounting seat, a handheld rod and a blade, and the surface of the blade is in lap joint with the inner wall of the mounting seat. According to the blade replacing mechanism of the paper cutter, when the blade is detached, the fixing bolts are taken down, the T-shaped inserting blocks can support the blade to prevent the blade from falling off due to the fact that the T-shaped inserting blocks are inserted into the positioning grooves at the moment, after all the fixing bolts are detached, the blade can be pulled down, the lower surfaces of the T-shaped inserting blocks are stressed to be actively contained in the T-shaped grooves, and the T-shaped inserting blocks are separated from the positioning grooves; when the blade is installed, the blade is inserted into the installation base, at the moment, the upper arc face of the T-shaped insertion block is stressed and stored in the T-shaped groove, the first spring is extruded, when the T-shaped insertion block moves to the positioning groove, the T-shaped insertion block is pushed by the elastic force of the first spring to be inserted into the positioning groove, and follow-up installation of a fixing bolt is facilitated. And the blade of the mechanism is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of paper cutters, and more specifically to a blade replacement mechanism for a paper cutter. Background Art

[0002] Paper cutter is a traditional product used to handle paper cutting needs in the later stage of printing. The main component of the paper cutter is to press the blade down through hydraulic pressure and use pressure to make the blade cut the paper.

[0003] Existing paper cutters all install the blade through a mounting seat, and the blade is installed in the threaded hole of the mounting seat by bolts. When replacing the blade, the bolts cannot be removed from the mounting seat at one time, so this will cause the blade to fall directly and cause a safety hazard. It is necessary to use tools to support the blade before removing all the bolts. Only after the support is completed can all the bolts be removed, which is inconvenient. Utility Model Content

[0004] In order to overcome the above defects of the prior art, the utility model provides a paper cutter blade replacement mechanism to solve the problems existing in the above background technology.

[0005] The utility model provides the following technical scheme: a paper cutter blade replacement mechanism comprises a mounting seat, a hand-held rod and a blade, the surface of the blade overlaps the inner wall of the mounting seat, the front side of the blade and the back side of the mounting seat are both provided with threaded holes, the inner wall of the threaded hole is threadedly connected with a fixing bolt, the front side of the mounting seat is provided with a placement groove, the fixing bolt is located inside the placement groove, the upper surface of the blade is detachably mounted with a connecting strip, the inner top wall of the mounting seat is provided with a connecting groove, the surface of the connecting strip overlaps the inner wall of the connecting groove, the inner wall of the connecting groove is provided with a T-shaped groove, the inner wall of the T-shaped groove is slidably connected with a T-shaped plug block, the upper surface and the lower surface of the T-shaped plug block are both arc-shaped, and the arc-shaped setting can be actively received in the T-shaped groove when the upper surface or the lower surface of the T-shaped plug block is subjected to force, the T-shaped plug block is fixedly connected with a first spring on the opposite surface of the T-shaped slot, the front side and the back side of the connecting strip are both provided with positioning grooves, and the surface of the T-shaped plug block overlaps the inner wall of the positioning groove.

[0006] A further solution is that a concave groove is provided on the side of the connecting strip, a concave plug-in block is slidably connected to the inner wall of the concave groove, a second spring is fixedly connected to the opposite surface of the concave plug-in block and the concave groove, a mounting groove is provided on the upper surface of the blade, the surface of the connecting strip overlaps the inner wall of the mounting groove, a slot is provided on the inner side wall of the mounting groove, the surface of the concave plug-in block overlaps the inner wall of the slot, and the lower surface of the concave plug-in block is arc-shaped, the number of the T-shaped plug-ins is several, and two T-shaped plug-ins form a group, and several groups of T-shaped plug-ins are laterally equidistantly arranged inside the connecting groove.

[0007] A further solution is that a threaded groove matching the threaded hole is formed on the surface of the hand-holding rod near one end of the blade, an L-shaped operating rod is fixedly connected to the end of the hand-holding rod away from the blade, and a hand-holding sleeve is rotatably connected to the surface of the hand-holding rod via a bearing. By holding the hand-holding sleeve, the hand-holding rod is rotated through the L-shaped operating rod to screw into the threaded hole, which can be used as a fulcrum for taking the blade.

[0008] Technical effects and advantages of the utility model:

[0009] 1. The blade replacement mechanism of the paper cutter is as follows: when disassembling the blade, the fixing bolt is removed. Since the T-shaped plug is inserted in the positioning groove at this time, the T-shaped plug can support the blade to prevent the blade from falling. After all the fixing bolts are removed, the blade can be pulled down, and the lower surface of the T-shaped plug is actively received in the T-shaped groove by force. The T-shaped plug is detached from the positioning groove, and the blade can be removed. When installing the blade, the blade is inserted into the mounting seat. At this time, the upper arc surface of the T-shaped plug is received in the T-shaped groove by force, and the first spring is squeezed. When the T-shaped plug moves to the positioning groove, the elastic force of the first spring pushes the T-shaped plug to insert into the positioning groove, thereby preliminarily fixing the blade, facilitating the subsequent installation of the fixing bolts, and making the mechanism convenient for blade replacement.

[0010] 2. The blade replacement mechanism of the paper cutter inserts the connecting strip into the installation slot. At this time, the arc surface of the concave plug-in block is forced to be accommodated in the concave slot. At this time, the second spring is squeezed. When the concave plug-in block moves to the slot, the elastic force of the second spring pushes the concave plug-in block to be inserted into the slot, completing the connection between the connecting strip and the blade. Pressing the concave plug-in block can actively detach the concave plug-in block from the slot, which is convenient for the disassembly and assembly of the connecting strip and the disassembly and assembly of the connecting strip on the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0012] Figure 2 This is a schematic diagram of the three-dimensional structure of the blade of the utility model.

[0013] Figure 3 This is a schematic diagram of the structure in which the hand-held rod of the utility model is installed behind the blade.

[0014] Figure 4 This is a schematic diagram of the front section structure of the blade of the utility model.

[0015] Figure 5 It is a schematic diagram of the side section structure of the mounting seat of the utility model.

[0016] The reference numerals in the drawings are: 1 mounting seat, 2 hand-held rod, 3 blade, 4 fixing bolt, 5 connecting strip, 6 T-shaped plug block, 7 first spring, 8 concave plug block, 9 second spring, 10 L-shaped operating rod, 11 hand-held sleeve. DETAILED DESCRIPTION

[0017] A paper cutter blade replacement mechanism, referring to Figure 1-5 , comprises a mounting seat 1, a hand-held rod 2 and a blade 3, the surface of the blade 3 overlaps the inner wall of the mounting seat 1, a threaded hole is provided on the front side of the blade 3 and the back side of the mounting seat 1, a fixing bolt 4 is threadedly connected to the inner wall of the threaded hole, a threaded groove matched with the threaded hole is provided on the surface of the hand-held rod 2 close to the blade 3, an L-shaped operating rod 10 is fixedly connected to the end of the hand-held rod 2 away from the blade 3, a hand-held sleeve 11 is rotatably connected to the surface of the hand-held rod 2 through a bearing, the hand-held sleeve 11 is held, and the hand-held rod 2 is rotated through the L-shaped operating rod 10 to screw into the threaded hole, which can be used as a fulcrum for taking the blade 3, a placement groove is provided on the front side of the mounting seat 1, the fixing bolt 4 is located inside the placement groove, and a connecting strip 5 is detachably installed on the upper surface of the blade 3.

[0018] A concave groove is provided on the side of the connecting strip 5, and a concave plug-in block 8 is slidably connected to the inner wall of the concave groove, and a second spring 9 is fixedly connected to the opposite surface of the concave plug-in block 8 and the concave groove. A mounting groove is provided on the upper surface of the blade 3, and the surface of the connecting strip 5 overlaps with the inner wall of the mounting groove. A slot is provided on the inner side wall of the mounting groove, and the surface of the concave plug-in block 8 overlaps with the inner wall of the slot, and the lower surface of the concave plug-in block 8 is arc-shaped.

[0019] Insert the connecting strip 5 into the installation groove. At this time, the arc surface of the concave plug block 8 is forced to be accommodated in the concave groove. At this time, the second spring 9 is squeezed. When the concave plug block 8 moves to the slot, the elastic force of the second spring 9 pushes the concave plug block 8 to be inserted into the slot, completing the connection between the connecting strip 5 and the blade 3. Pressing the concave plug block 8 can actively detach the concave plug block 8 from the slot, which is convenient for the disassembly and assembly of the connecting strip 5 and the disassembly and assembly of the connecting strip 5 on the blade 3.

[0020] A connecting groove is provided on the inner top wall of the mounting seat 1, and the surface of the connecting strip 5 overlaps with the inner wall of the connecting groove. A T-shaped groove is provided on the inner wall of the connecting groove, and a T-shaped plug 6 is slidably connected to the inner wall of the T-shaped groove. There are several T-shaped plugs 6, and two T-shaped plugs 6 form a group. Several groups of T-shaped plugs 6 are laterally equidistantly arranged inside the connecting groove. The upper and lower surfaces of the T-shaped plugs 6 are both arc-shaped. The first spring 7 is fixedly connected to the opposite surface of the T-shaped plug 6 and the T-slot. Positioning grooves are provided on the front and back sides of the connecting strip 5, and the surface of the T-shaped plug 6 overlaps with the inner wall of the positioning groove.

[0021] When disassembling the blade 3, the fixing bolt 4 is removed. Since the T-shaped plug 6 is inserted in the positioning groove at this time, the T-shaped plug 6 can support the blade 3 to prevent the blade 3 from falling. After all the fixing bolts 4 are removed, the blade 3 can be pulled down, and the lower surface of the T-shaped plug 6 is actively received in the T-shaped groove by force. The T-shaped plug 6 is detached from the positioning groove, and the blade 3 can be removed. When installing the blade 3, the blade 3 is inserted into the mounting seat 1. At this time, the upper arc surface of the T-shaped plug 6 is received in the T-shaped groove by force, and the first spring 7 is squeezed. When the T-shaped plug 6 moves to the positioning groove, the elastic force of the first spring 7 pushes the T-shaped plug 6 to insert into the positioning groove, which is convenient for the subsequent installation of the fixing bolts 4, so that the mechanism is convenient for the replacement of the blade 3.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A paper cutter blade replacement mechanism, comprising a mounting base (1), a hand-held rod (2) and a blade (3), characterized in that: The surface of the blade (3) overlaps with the inner wall of the mounting seat (1); the front side of the blade (3) and the back side of the mounting seat (1) are both provided with threaded holes; the inner wall of the threaded hole is threadedly connected with a fixing bolt (4); the front side of the mounting seat (1) is provided with a placement groove; the fixing bolt (4) is located inside the placement groove; the upper surface of the blade (3) is detachably mounted with a connecting strip (5); the inner top wall of the mounting seat (1) is provided with a connecting groove; the surface of the connecting strip (5) overlaps with the inner wall of the connecting groove; the inner wall of the connecting groove is provided with a T-shaped groove; the inner wall of the T-shaped groove is slidably connected with a T-shaped plug (6); the upper and lower surfaces of the T-shaped plug (6) are both arc-shaped; the T-shaped plug (6) is fixedly connected with a first spring (7) on the opposite surface of the T-shaped plug and the T-shaped groove; the front and back sides of the connecting strip (5) are both provided with positioning grooves; the surface of the T-shaped plug (6) overlaps with the inner wall of the positioning groove.

2. A paper cutter blade replacement mechanism according to claim 1, characterized in that: A concave groove is provided on the side of the connecting strip (5), and a concave plug-in block (8) is slidably connected to the inner wall of the concave groove.

3. A paper cutter blade replacement mechanism according to claim 2, characterized in that: The concave insert block (8) and the opposite surface of the concave groove are fixedly connected with a second spring (9).

4. A paper cutter blade replacement mechanism according to claim 3, characterized in that: The upper surface of the blade (3) is provided with a mounting groove, the surface of the connecting strip (5) overlaps with the inner wall of the mounting groove, the inner side wall of the mounting groove is provided with a slot, the surface of the concave plug-in block (8) overlaps with the inner wall of the slot, and the lower surface of the concave plug-in block (8) is arc-shaped.

5. A paper cutter blade replacement mechanism according to claim 1, characterized in that: The number of the T-shaped plug blocks (6) is several, and two T-shaped plug blocks (6) form a group, and several groups of T-shaped plug blocks (6) are arranged in the interior of the connecting groove at equal distances in the transverse direction.

6. A paper cutter blade replacement mechanism according to claim 1, characterized in that: A thread groove matching the threaded hole is provided on the surface of the hand-held rod (2) at one end close to the blade (3); an L-shaped operating rod (10) is fixedly connected to the end of the hand-held rod (2) away from the blade (3); and a hand-held sleeve (11) is rotatably connected to the surface of the hand-held rod (2) via a bearing.

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