Sealing strip scissors with Z-shaped cutting opening

Abstract

The utility model discloses sealing strip scissors with a Z-shaped cutting opening. The sealing strip scissors with the Z-shaped cutting opening comprise a scissors head frame. The handle assembly comprises an upper handle and a lower handle; the upper handle and the lower handle are hinged to the two sides of the scissor head frame respectively. The knife rest assembly comprises an upper knife rest and a lower knife rest, and the upper knife rest and the lower knife rest are movably connected to the end of the scissor head frame; the upper knife rest and the lower knife rest are fixedly connected with an upper blade and a lower blade respectively, and the cross section of the upper blade and the cross section of the lower blade are in a Z shape. The number of the pressing block assemblies is four, and every two pressing block assemblies are arranged on the two sides of the upper blade and the two sides of the lower blade respectively. Wherein the upper handle is in transmission connection with the upper knife rest, and the lower handle is in transmission connection with the lower knife rest. Movement of the upper handle and the lower handle is converted into vertical up-and-down movement of the upper knife rest and the lower knife rest, cutting accuracy is higher, a cutting opening formed by cutting of the blade is in a Z shape, the splicing area is larger, and pulling resistance is higher.

Description

Technical Field

[0001] This disclosure relates to the field of sealing strip scissors technology, and in particular to a sealing strip scissors with a Z-shaped cut. Background Technology

[0002] O-rings, also known as O-ring seals, are commonly made of materials including nitrile rubber, fluororubber, ethylene propylene rubber, silicone rubber, and polyurethane. They are circular rubber rings widely used in many fields. Their function is to prevent liquid and gas leakage in various equipment and devices, maintaining the system's tightness to ensure normal operation and energy efficiency. O-rings are generally standard parts, but for large equipment requiring non-standard O-rings with large inner diameters, custom-made parts or adhesive bonding methods are necessary.

[0003] Customized products are more expensive and have a longer production cycle. If such O-rings are not available during equipment maintenance and need to be replaced, the equipment will be shut down for a long time, resulting in unnecessary production stoppages.

[0004] For adhesive bonding, you can purchase an O-ring with the same wire diameter, calculate the required length of the O-ring according to the required inner diameter, and cut it directly radially vertically or at a 45° angle. Then, glue the O-ring into a complete circle to form an O-ring. The disadvantage is that, regardless of whether it is cut radially vertically or at a 45° angle, the tensile strength of the joint cannot reach that of the main body due to the limited contact area. Utility Model Content

[0005] This disclosure provides a sealing strip scissors with a Z-shaped cut to solve one of the technical problems recognized by the inventors.

[0006] This disclosure provides a sealing strip scissor with a Z-shaped cutting notch, including a scissor head holder;

[0007] The handle assembly includes an upper handle and a lower handle; the upper handle and the lower handle are respectively hinged to both sides of the scissor head frame;

[0008] The blade holder assembly includes an upper blade holder and a lower blade holder, which are movably connected to the ends of the scissor head frame; an upper blade and a lower blade are respectively fixedly connected to the upper blade holder and the lower blade, and the cross-section of the upper blade and the lower blade is "Z" shaped.

[0009] The pressing block assembly has four components, which are respectively arranged in pairs on both sides of the upper blade and the lower blade;

[0010] The upper handle and the upper tool post are connected by a transmission, driving the upper tool post to move back and forth along the axial direction. The lower handle and the lower tool post are connected by a transmission, driving the lower tool post to move back and forth along the axial direction.

[0011] Preferably, the upper handle includes an upper handle portion and an upper gear, the upper gear being fixedly connected to the end of the upper handle portion; the lower handle includes a lower handle portion and a lower gear; the upper gear and the lower gear are respectively rotatably connected to both sides of the scissor head frame via a central shaft.

[0012] Preferably, the upper blade holder has an upper rack at its end, which meshes with the upper gear; the lower blade holder has a lower rack at its end, which meshes with the lower gear; and the upper and lower blade holders have a positioning shaft at one end near the scissor head frame. The scissor head frame has an elongated positioning hole, and the positioning shaft is movably connected to the positioning hole.

[0013] Preferably, the upper blade holder further includes an upper blade mounting plate, the upper blade mounting plate having a "Z" shaped cross-section, the upper blade including a first upper blade, a second upper blade and a third upper blade, the first upper blade, the second upper blade and the third upper blade being detachably connected to the upper blade mounting plate, the first upper blade and the third upper blade being respectively disposed at both ends of the second upper blade and perpendicular to the second upper blade;

[0014] The lower blade holder also includes a lower blade mounting plate, the lower blade mounting plate having a "Z" shaped cross-section, the lower blade including a first lower blade, a second lower blade and a third lower blade, the first lower blade, the second lower blade and the third lower blade being detachably connected to the lower blade mounting plate, the first lower blade and the third lower blade being respectively disposed at both ends of the second lower blade and perpendicular to the second lower blade;

[0015] The upper blade and the lower blade are arranged vertically in correspondence.

[0016] Preferably, the pressure block assembly includes a pressure block, a movable rod, a spring sleeve, and a spring. The spring sleeve is fixedly connected to the upper or lower tool holder. The pressure block is fixedly connected to one end of the movable rod, and the other end of the movable rod is movably connected inside the spring sleeve. The spring is sleeved on the outside of the movable rod and abuts against the pressure block.

[0017] Preferably, the movable rod has an elongated positioning groove along the axial direction, the spring sleeve has a through hole on its side, a positioning pin is inserted through the through hole, and the positioning pin is inserted through the positioning groove and fitted with it with a clearance.

[0018] Preferably, the cross-section of the pressure block is "V" shaped.

[0019] Preferably, the centerline of the pressure block is in the same plane as the centerlines of the second upper blade and the second lower blade.

[0020] The main beneficial effects of this disclosure are as follows: By converting the movement of the upper and lower handles into the vertical up-and-down movement of the upper and lower blade holders, the cutting accuracy is higher, and the cut of the blade is "Z" shaped, resulting in a larger splicing area and stronger tensile strength.

[0021] It should be understood that both the foregoing general description and the following detailed description are for illustrative purposes and do not necessarily limit the scope of this disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of this disclosure. Furthermore, the specification and drawings serve to explain the principles of this disclosure. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the specific embodiments of this disclosure or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the scissor structure according to an embodiment of the present disclosure. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the scissor structure according to an embodiment of the present disclosure. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the scissor head frame structure according to an embodiment of the present disclosure. Figure 1 ;

[0026] Figure 4 This is a schematic diagram of the scissor head frame structure according to an embodiment of the present disclosure. Figure 2 ;

[0027] Figure 5 This is a schematic diagram of the upper handle structure according to an embodiment of the present disclosure;

[0028] Figure 6 This is a schematic diagram of the lower handle structure according to an embodiment of the present disclosure;

[0029] Figure 7 This is a schematic diagram of the upper tool holder structure according to an embodiment of the present disclosure;

[0030] Figure 8 This is a schematic diagram of the upper blade mounting structure according to an embodiment of the present disclosure;

[0031] Figure 9 This is a schematic diagram of the mounting structure of the pressure block assembly and the upper blade holder according to an embodiment of the present disclosure;

[0032] Figure 10 This is a schematic diagram of the lower tool holder structure according to an embodiment of the present disclosure;

[0033] Figure 11 This is a schematic diagram of the upper and lower blade mounting structure according to an embodiment of the present disclosure;

[0034] Figure 12 This is a schematic diagram of the mounting structure of the pressure block assembly and the lower blade holder according to an embodiment of the present disclosure;

[0035] Figure 13 This is a schematic diagram of the sealing ring cutout according to an embodiment of the present disclosure.

[0036] Icons: 1-Scissor head holder; 11-Central shaft; 12-Positioning hole; 13-Positioning shaft; 21-Upper handle; 211-Upper gear; 22-Lower handle; 221-Lower gear; 31-Upper blade holder; 311-Upper blade; 3111-First upper blade; 3112-Second upper blade; 3113-Third upper blade; 312-Upper blade mounting plate; 314-Upper rack; 32-Lower blade holder; 321-Lower blade; 3211-First lower blade; 3212-Second lower blade; 3213-Third lower blade; 322-Lower blade mounting plate; 324-Lower rack; 4-Pressure block assembly; 41-Spring sleeve; 42-Moving rod; 43-Pressure block; 44-Spring; 45-Positioning pin; 5-Sealing ring. Detailed Implementation

[0037] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments.

[0038] Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0039] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0041] Example

[0042] like Figure 1-13 As shown, this embodiment provides a Z-shaped cutting edge sealing strip scissors, including a scissor head frame 1 for mounting a handle assembly and a blade holder assembly; the handle assembly includes an upper handle 21 and a lower handle 22; the upper handle 21 and the lower handle 22 are respectively hinged to both sides of the scissor head frame; the blade holder assembly includes an upper blade holder 31 and a lower blade holder 32, the upper blade holder 31 and the lower blade holder 32 are movably connected to the ends of the scissor head frame 1; the upper blade holder 31 and the lower blade holder 32 are respectively fixedly connected to an upper blade 311 and a lower blade 321, the cross-section of the upper blade 311 and the lower blade 321 is "Z" shaped; pressure block 43 assembly 4, there are four pressure blocks 43 assemblies 4, which are respectively arranged in pairs on both sides of the upper blade 311 and the lower blade 321; wherein, the upper handle 21 and the upper blade holder 31 are driven to move the upper blade holder 31 back and forth along the axial direction, and the lower handle 22 and the lower blade holder 32 are driven to move the lower blade holder 32 back and forth along the axial direction.

[0043] In this embodiment, by pressing the upper handle 21 and the lower handle 22, the movement of the upper handle 21 and the lower handle 22 is converted into the up and down movement of the upper blade holder 31 and the lower blade holder 32. During use, the pressure block 43 assembly 4 will press the sealing ring 5, and then the upper blade 311 and the lower blade 321 will cut the sealing ring 5. Since the cross-section of the upper blade 311 and the lower blade 321 is "Z" shaped, and the cut of the sealing ring 5 is Z shaped, the contact area of ​​the two cut surfaces is larger when splicing, and the tensile strength is stronger.

[0044] Specifically, the upper handle 21 includes an upper handle 21 part and an upper gear 211, the upper gear 211 being fixedly connected to the end of the upper handle 21 part; the lower handle 22 includes a lower handle 22 part and a lower gear 221; the upper gear 211 and the lower gear 221 are respectively rotatably connected to both sides of the scissor head frame 1 via a central shaft 11. Gears are provided at the ends of both the upper handle 21 and the lower handle 22. The upper gear 211 and the lower gear 221 have the same center and are hinged to the scissor head frame 1 via the same central shaft 11. The upper handle 21 and the lower handle 22 are symmetrically arranged. When the upper handle 21 and the lower handle 22 are brought closer together, the upper gear 211 and the lower gear 221 rotate in opposite directions. The upper gear 211 and the lower gear 221 respectively drive the upper blade holder 31 and the lower blade holder 32, thereby driving the upper blade holder 31 and the lower blade holder 32 to move in opposite directions, i.e., to move closer to each other or to separate from each other.

[0045] Specifically, the upper blade holder 31 has an upper rack 314 at its end, which meshes with the upper gear 211. The lower blade holder 32 has a lower rack 324 at its end, which meshes with the lower gear 221. A positioning shaft 13 is provided at the end of both the upper and lower blade holders 31 and 32 near the scissor head holder 1. An elongated positioning hole 12 is provided on the scissor head holder 1, and the positioning shaft 13 is movably connected within the positioning hole 12. The upper blade holder 31 and lower blade holder 32 have identical structures and are symmetrically arranged. Taking the upper blade holder 31 as an example, rotating the upper handle 21 rotates the upper gear 211, which in turn moves the upper rack 314. The positioning shaft 13 and positioning hole 12 limit the movement of the upper blade holder 31, ensuring it can only move back and forth along the direction of the positioning hole 12, preventing deviation. This converts the movement of the upper handle 21 into the vertical up-and-down movement of the upper blade holder 31, thereby achieving the cutting of the sealing ring 5.

[0046] Furthermore, the upper blade holder 31 also includes an upper blade mounting plate 312, the upper blade mounting plate 312 having a "Z" shaped cross-section, the upper blade 311 including a first upper blade 3111, a second upper blade 3112 and a third upper blade 3113, the first upper blade 3111, the second upper blade 3112 and the third upper blade 3113 being detachably connected to the upper blade mounting plate 312, the first upper blade 3111 and the third upper blade 3113 being respectively disposed at both ends of the second upper blade 3112 and perpendicular to the second upper blade 3112;

[0047] The lower blade holder 32 also includes a lower blade mounting plate 322, the lower blade mounting plate 322 having a "Z" shaped cross-section, the lower blade 321 including a first lower blade 3211, a second lower blade 3212 and a third lower blade 3213, the first lower blade 3211, the second lower blade 3212 and the third lower blade 3213 being detachably connected to the lower blade mounting plate 322, the first lower blade 3211 and the third lower blade 3213 being respectively disposed at both ends of the second lower blade 3212 and perpendicular to the second lower blade 3212;

[0048] The upper blade 311 and the lower blade 321 are arranged vertically in correspondence.

[0049] The upper tool holder 31 and the lower tool holder 32 have the same structure. Taking the upper tool holder 31 as an example, the upper tool holder 31 is provided with an upper blade mounting plate 312. The upper blade mounting plate 312 is provided with screw holes for mounting the upper blade 311. The upper blade 311 includes a first upper blade 3111, a second upper blade 3112 and a third upper blade 3113. The first upper blade 3111 and the third upper blade 3113 are arranged perpendicularly to the second upper blade 3112. The second upper blade 3112 is located in the middle and is spliced ​​into a blade with a Z-shaped cross section, thereby cutting a Z-shaped cut.

[0050] Specifically, the pressure block 43 assembly 4 includes a pressure block 43, a movable rod 42, a spring sleeve 41, and a spring 44. The spring sleeve 41 is fixedly connected to the upper tool holder 31 or the lower tool holder 32. The pressure block 43 is fixedly connected to one end of the movable rod 42, and the other end of the movable rod 42 is movably connected to the inside of the spring sleeve 41. The spring sleeve 41 is located on the outside of the movable rod 42 and abuts against the pressure block 43. There are four pressure block assemblies 43, which are arranged in pairs on the upper blade holder 31 and the lower blade holder 32. The two pressure block assemblies 43 on the upper blade holder 31 are located on both sides of the upper blade 311, and the two pressure block assemblies 43 on the lower blade holder 32 are located on both sides of the lower blade 321. They are used to press the sealing ring 5 on both sides of the position where it is ready to be cut, fix the sealing ring 5, and make the cut smoother. When in use, the pressure block assemblies 43 move with the upper blade holder 31 or the lower blade holder 32. The pressure block 43 contacts the sealing ring 5 first, and the pressure block 43 compresses the spring 44 under force, which plays a buffering role.

[0051] Furthermore, the cross-section of the pressure block 43 is "V" shaped. When the pressure block 43 contacts the sealing ring 5, it is subjected to the elastic force of the spring 44, squeezing the sealing ring 5 and moving it to the center of the positioning block, making the positioning more accurate.

[0052] Furthermore, the movable rod 42 has an elongated positioning groove along its axial direction, and the spring sleeve 41 has a through hole on its side. A positioning pin 45 is inserted through the through hole, passing through the positioning groove and engaging with it with a clearance. The engagement of the positioning pin 45 and the positioning groove restricts the rotation of the movable rod 42, allowing it to move only up and down. This prevents the rotation of the movable rod 42 from affecting the direction of the pressure block 43, thus preventing it from pressing the sealing ring 5 tightly.

[0053] Furthermore, the center line of the pressure block 43 is on the same plane as the center lines of the second upper blade 3112 and the second lower blade 3212. This arrangement allows the pressure block 43 and the second upper blade 3112 and the second lower blade 3212 to be aligned, resulting in a better cutting effect.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A Z-cut seal bar cutter characterized by, The utility model relates to a cutting machine, which comprises a scissor head frame, a handle assembly including an upper handle and a lower handle, the upper handle and the lower handle being respectively hinged to two sides of the scissor head frame, a cutter frame assembly including an upper cutter frame and a lower cutter frame, the upper cutter frame and the lower cutter frame being movably connected to the end of the scissor head frame, the upper cutter frame and the lower cutter frame being respectively fixedly connected with an upper blade and a lower blade, the cross section of the upper blade and the lower blade being in the shape of "Z", and four pressing block assemblies being respectively arranged on both sides of the upper blade and the lower blade. The upper handle and the upper cutter frame are in transmission connection, driving the upper cutter frame to move forward and backward along the axial direction, and the lower handle and the lower cutter frame are in transmission connection, driving the lower cutter frame to move forward and backward along the axial direction. The upper handle comprises an upper handle part and an upper gear, the upper gear being fixedly connected to the end of the upper handle part; the lower handle comprises a lower handle part and a lower gear; the upper gear and the lower gear are respectively rotatably connected to two sides of the scissor head frame through a central shaft. The end of the upper cutter frame is provided with an upper rack, the upper rack being in meshing arrangement with the upper gear, the end of the lower cutter frame is provided with a lower rack, the lower rack being in meshing arrangement with the lower gear, and the upper cutter frame and the lower cutter frame are provided with positioning shafts at one end close to the scissor head frame, the scissor head frame being provided with a long strip-shaped positioning hole, and the positioning shafts being movably connected in the positioning hole. The upper cutter frame further comprises an upper blade mounting plate, the cross section of the upper blade mounting plate being in the shape of "Z", the upper blade comprising a first upper blade, a second upper blade and a third upper blade, the first upper blade, the second upper blade and the third upper blade being respectively detachably connected to the upper blade mounting plate, the first upper blade and the third upper blade being respectively arranged at two ends of the second upper blade and being arranged perpendicularly to the second upper blade. The lower cutter frame further comprises a lower blade mounting plate, the cross section of the lower blade mounting plate being in the shape of "Z", the lower blade comprising a first lower blade, a second lower blade and a third lower blade, the first lower blade, the second lower blade and the third lower blade being respectively detachably connected to the lower blade mounting plate, the first lower blade and the third lower blade being respectively arranged at two ends of the second lower blade and being arranged perpendicularly to the second lower blade.

2. A Z-cut seal bar cutter according to claim 1, wherein, The upper blade and the lower blade are arranged perpendicularly and correspondingly.

3. A Z-cut seal bar cutter according to claim 2, wherein, The pressing block assembly comprises a pressing block, a movable rod, a spring sleeve and a spring, the spring sleeve being fixedly connected to the upper cutter frame or the lower cutter frame, the pressing block being fixedly connected to one end of the movable rod, the other end of the movable rod being movably connected to the spring sleeve, the spring sleeve being arranged outside the movable rod and being arranged in abutment with the pressing block.

4. A Z-cut seal bar cutter according to claim 3, wherein, The movable rod is provided with a long strip-shaped positioning groove along the axial direction, the side surface of the spring sleeve is provided with a through hole, a positioning pin is arranged in the through hole in a penetrating manner, and the positioning pin is arranged in the positioning groove in a clearance fit. The cross section of the pressing block is in the shape of "V". The center line of the pressing block is in the same plane as the center line of the second upper blade and the second lower blade.

5. A Z-cut seal bar cutter according to claim 4, wherein, ​ 6. A Z-cut seal bar cutter according to claim 5, wherein, ​ 7. A Z-cut seal bar cutter according to claim 6, wherein, ​ 8. A Z-cut seal bar cutter according to claim 7, wherein, ​

Images