Cutting device for indwelling bag

Abstract

The utility model relates to the technical field of indwelling bag cutting, in particular to a cutting device for an indwelling bag, which comprises a first supporting rod, a second supporting rod and a base plate, a positioning column is arranged on the base plate, a counter bore is arranged at the bottom of the first supporting rod, and the positioning column is matched with the counter bore to enable the first supporting rod to be perpendicular to the base plate. The second supporting rod is slidably connected with the connecting block and can rotate around the first supporting rod, a cutter assembly is arranged on the second supporting rod and is parallel to the first supporting rod, the cutter assembly comprises a sleeve and a cutter, the cutter is slidably arranged in the sleeve, and a cutting edge of the cutter can extend out of the bottom of the sleeve from the bottom of the sleeve. The position of the cutter can be kept unchanged relative to the sleeve; when the cutter rotates to cut the indwelling bag base plate, the cutter cannot move up and down, the cutting depth of the cutter to the indwelling bag base plate is guaranteed, and the stability of cutting the indwelling bag base plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of retention bag cutting, in particular to a retention bag cutter. Background Art

[0002] The retention bag is connected to the stoma, and the patient's excreta is discharged from the body through the stoma. The retention bag is used to store the excreta discharged from the body. In order to prevent the excreta from leaking sideways, the opening size of the retention bag needs to be adapted to the stoma. Usually, the stoma sizes of different patients are different, resulting in the need to cut the opening size of the retention bag to adapt to stomas of different sizes. Traditional cutting methods are mainly manual cutting, which is unstable and results in an irregular shape of the cut opening, which is not conducive to matching with the stoma. At the same time, the manually cut opening may have burrs. After matching with the stoma, the burrs irritate the stoma and cause discomfort to the patient. In order to improve the shortcomings of manual cutting, mechanical equipment is usually required.

[0003] To address this situation, there is a retention bag chassis opening shear on the market, such as the Chinese patent application number CN202020032865.7. The retention bag chassis opening shear includes a first leg rod and a second leg rod. The second leg rod is located in the middle of the chassis. A blade is provided on the first leg rod. The first leg rod is opened at a certain angle, and the first leg rod rotates around the second leg rod to drive the blade to cut the chassis, thereby achieving shearing of the chassis opening.

[0004] However, although this retention bag chassis opening shear can achieve the shearing of the chassis opening, the inventor found in actual use that this retention bag chassis opening shear still has some shortcomings, specifically: when the blade is rotating and cutting, a downward force needs to be applied to the blade so that the blade can penetrate the chassis and cut, which makes the operation unstable; when the blade rotates, when the downward force is insufficient, the blade draws a circle on the upper surface of the chassis and does not cut the chassis, or the blade does not penetrate the chassis and the part below the chassis is not cut; when the downward force is too large, the blade penetrates the chassis and penetrates into the gasket under the chassis, resulting in difficulty in rotation, and the blade needs to be rotated back in the opposite direction, the downward force needs to be adjusted, and then the rotation and cutting continue, resulting in some parts being cut back and forth multiple times, resulting in burrs.

[0005] Therefore, based on the above-mentioned shortcomings, there is an urgent need to design a retention bag cutter for cutting the chassis of the retention bag, which is convenient for controlling the cutting depth of the tool on the chassis of the retention bag and improving the stability of cutting the chassis of the retention bag. Summary of the invention

[0006] The purpose of the utility model is to provide a retention bag cutter for cutting the bottom plate of the retention bag, so as to solve the above-mentioned problem that the cutting depth of the current retention bag cutter is difficult to control, and to improve the stability of cutting the bottom plate of the retention bag.

[0007] In order to achieve the above-mentioned invention object, the utility model provides the following technical solutions:

[0008] A cutter for retention bags, comprising a first support rod, a second support rod and a pad, wherein a positioning column is arranged on the pad, a countersunk hole is arranged at the bottom of the first support rod, the positioning column and the countersunk hole are adapted to make the first support rod perpendicular to the pad, a connecting block is arranged on the first support rod, the second support rod is slidably connected to the connecting block, the second support rod can rotate around the first support rod, a tool assembly is arranged on the second support rod, the tool assembly is arranged parallel to the first support rod, the tool assembly comprises a sleeve and a tool, the tool is slidably arranged in the sleeve, the blade of the tool can extend from the bottom of the sleeve to the outside of the bottom of the sleeve, and the tool can maintain a constant position relative to the sleeve.

[0009] As a preferred technical solution of the present application, the connecting block is rotatably arranged on the first support rod.

[0010] As a preferred technical solution of the present application, the tool assembly also includes a push rod, which is threadedly connected to the sleeve, the top of the tool is against the bottom of the push rod, a spring is arranged between the sleeve and the tool, and the spring is sleeved on the tool. Under the action of the push rod, the tool puts the spring in a compressed state.

[0011] As a preferred technical solution of the present application, the bottom of the sleeve includes a bottom surface, and the bottom surface is planar.

[0012] As a preferred technical solution of the present application, the tool assembly is slidably connected to the second support rod, and a first tightening knob is provided on the second support rod. The first tightening knob is used to fix the tool assembly relative to the second support rod.

[0013] As a preferred technical solution of the present application, a first scale line is provided on the push rod, and a second scale line is provided on the sleeve. The first scale line is used to indicate the sliding distance of the tool relative to the sleeve, and the second scale line is used to indicate the sliding distance of the tool assembly relative to the second support rod.

[0014] As a preferred technical solution of the present application, a second tightening knob is provided on the connecting block, and the second tightening knob is used to fix the second support rod relative to the connecting block.

[0015] As a preferred technical solution of the present application, a third scale line is provided on the second support rod, and the third scale line is used to indicate the sliding distance of the second support rod relative to the connecting block.

[0016] As a preferred technical solution of the present application, the pad is in the shape of a disc, and the outer circle size of the pad is larger than the maximum opening size that can be cut from the bottom plate of the retention bag.

[0017] As a preferred technical solution of the present application, a clamping ring is provided on the first support rod, and the clamping ring is used to limit the movement of the connecting block along the axial direction of the first support rod.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. In the solution of the present application, a connecting block is provided on the first support rod, and the second support rod is slidably connected to the connecting block. Such a configuration enables the distance between the cutter on the second support rod and the first support rod to be adjustable, and the cutter rotates around the first support rod to cut the retention bag bottom plate. By adjusting the distance between the cutter and the first support rod, the function of cutting out retention bag bottom plates with different opening sizes is achieved;

[0020] The cutter assembly is arranged parallel to the first support rod. In actual operation, the first support rod is kept vertical, and the cutter is also vertical. The angle formed by the opening surface formed by the cutter rotating around the first support rod to cut the bottom plate of the retention bag and the surface of the bottom plate of the retention bag is not a sharp angle. When the bottom plate of the retention bag is adapted to the stoma, the stimulation of the opening surface of the bottom plate of the retention bag to the stoma is weakened, which is conducive to the adaptation of the bottom plate of the retention bag to the stoma and reduces the discomfort of the patient.

[0021] The pad is placed horizontally, and then the retention bag chassis is placed on the pad, and then the first support rod is placed on the pad. Under the action of the positioning column, the first support rod is in a vertical state, and the tool assembly is arranged parallel to the first support rod, and the tool assembly is also in a vertical state. The tool is adjusted so that the tool passes through the retention bag chassis and just contacts the pad, and the relative position of the tool is kept unchanged, and the second support rod is rotated. The second support rod rotates with the tool, and the retention bag chassis is cut while the tool rotates, so as to achieve cutting of the retention bag chassis; during the rotation process, the tool is always in a vertical state and does not move up and down, so that the cutting depth of the tool on the retention bag chassis remains unchanged, and the stability of cutting the retention bag chassis is improved;

[0022] 2. Rotate the push rod, the push rod moves downward, the push rod pushes the tool to move downward, and at the same time further compresses the spring. Under the action of the push rod, the tool penetrates the chassis; the threaded connection ensures that the push rod and the sleeve are relatively fixed, so that the tool will not move upward. The further compressed spring exerts a greater force on the tool, increasing the tendency of the tool to move relative to the sleeve into the sleeve, so that the tool will not move downward; in the process of the tool rotating to cut the chassis, the tool will not move up and down, which is conducive to the tool cutting the retention bag chassis and improves the stability of cutting the retention bag chassis;

[0023] The push rod is threadedly connected to the sleeve, and the push rod can be removed from the sleeve, and then the tool in the sleeve can be taken out, which is convenient for replacing the tool after the tool is worn; at the same time, when the retention bag cutter is not needed, the push rod can be adjusted to shrink the tool into the sleeve for easy storage, preventing damage to the tool or accidental injury to people by the tool, thereby improving the flexibility of using the retention bag cutter;

[0024] 3. The surface of the retention bag chassis is usually a plane, and the bottom surface of the sleeve bottom is set to a plane. In this way, the contact between the bottom surface of the sleeve bottom and the surface of the retention bag chassis is a plane-to-plane contact, which increases the contact area between the bottom surface of the sleeve bottom and the surface of the retention bag chassis. During the rotation of the tool, it is helpful to control the cutting depth of the tool on the retention bag chassis to remain unchanged, which is beneficial to the cutting of the tool on the retention bag chassis, and further improves the stability of cutting the retention bag chassis;

[0025] 4. Rotate the push rod so that the tool does not extend out of the through hole at the bottom of the sleeve, note the first scale line at this time, then place the first support rod vertically on the pad, adjust the tool assembly so that the bottom of the sleeve just contacts the pad, and note the second scale line at this time; place the pad under the retention bag chassis, then place the first support rod vertically on the pad, adjust the tool assembly so that the bottom of the sleeve contacts the surface of the retention bag chassis, and know the distance the tool assembly moves, that is, the thickness of the retention bag chassis, through the change of the second scale line. Keep the tool assembly in contact with the surface of the retention bag chassis, adjust the push rod so that the tool assembly The tool extends from the through hole at the bottom of the sleeve. The change of the first scale line can tell the distance the tool extends, and further the depth of the tool piercing the bottom plate of the retention bag. When the distance the tool extends is the distance the tool assembly moves, stop adjusting the push rod. At this time, the tool just passes through the bottom plate of the retention bag. The position of the push rod relative to the sleeve remains unchanged, so that the tool rotates around the first support rod to complete the cutting of the bottom plate of the retention bag. The setting of the first scale line and the second scale line improves the control of the cutting depth of the bottom plate of the retention bag by the tool, is conducive to the cutting of the bottom plate of the retention bag by the tool, and improves the stability of cutting the bottom plate of the retention bag.

[0026] 5. Usually, the bottom plate of the retention bag is in the shape of a disc. The pad is set to be in the shape of a disc to fit the bottom plate of the retention bag. The maximum outer circle of the pad is set to be larger than the maximum opening size that can be cut by the bottom plate of the retention bag. In this way, when cutting the bottom plate of the retention bag, the tool penetrates the bottom plate and contacts the pad without scratching the bag body of the retention bag. At the same time, the bottom surface area of ​​the pad is increased, so that the pad is placed on a plane more stably, and further the first support rod can be more stably in a vertical state, which is conducive to controlling the tool to maintain vertical rotation, and is conducive to the tool's control of the cutting depth of the bottom plate of the retention bag, and further improves the stability of cutting the bottom plate of the retention bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of one embodiment of a retention bag cutter of the present application;

[0028] Figure 2 A schematic structural diagram of one embodiment of a retention bag cutter of the present application from another perspective;

[0029] Figure 3 This is a schematic diagram of a split structure of one embodiment of a retention bag cutter of the present application;

[0030] Figure 4 This is a schematic diagram of the split structure of a cutter assembly of one embodiment of a retention bag cutter of the present application;

[0031] Figure 5 This is a schematic structural diagram of a sleeve of one embodiment of a retention bag cutter of the present application;

[0032] Figure 6 This is a schematic structural diagram of a first support rod of one embodiment of a retention bag cutter of the present application;

[0033] Indications in the figure: 1-first support rod, 2-second support rod, 3-shim plate, 4-connecting block, 5-tool assembly, 6-snapping ring, 11-counterbore, 21-third scale line, 22-first tightening knob, 31-positioning column, 41-second tightening knob, 51-push rod, 52-sleeve, 53-tool, 54-spring. 511-first scale line, 521-second scale line, 522-bottom surface. DETAILED DESCRIPTION

[0034] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0035] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention to be protected, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0038] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0039] Example 1: See Figure 1-6 As shown,

[0040] A retention bag cutter provided in the present embodiment comprises a first support rod 1, a second support rod 2 and a pad 3, wherein a positioning column 31 is arranged on the pad 3, a countersunk hole 11 is arranged at the bottom of the first support rod 1, the positioning column 31 and the countersunk hole 11 are adapted to make the first support rod 1 perpendicular to the pad 3, a connecting block 4 is arranged on the first support rod 1, the second support rod 2 is slidably connected to the connecting block 4, the second support rod 2 can rotate around the first support rod 1, a tool assembly 5 is arranged on the second support rod 2, the tool assembly 5 is arranged parallel to the first support rod 1, the tool assembly 5 comprises a sleeve 52 and a tool 53, the tool 53 is slidably arranged in the sleeve 52, the blade of the tool 53 can extend from the bottom of the sleeve 52 to the outside of the bottom of the sleeve 52, and the tool 53 can maintain a constant position relative to the sleeve 52.

[0041] The first support rod 1 is provided with a connecting block 4, and the second support rod 2 is slidably connected to the connecting block 4. In this way, the distance between the cutter 53 on the second support rod 2 and the first support rod 1 can be adjusted. The cutter 53 rotates around the first support rod 1 to cut the retention bag chassis. By adjusting the distance between the cutter 53 and the first support rod 1, the function of cutting out retention bag chassis with different opening sizes can be achieved.

[0042] The cutter assembly 5 is arranged parallel to the first support rod 1 so that the cutter 53 always remains in a vertical state during the process of rotating around the first support rod 1 to cut the bottom plate of the retention bag. The angle formed by the opening surface formed by the cutter 53 rotating around the first support rod 1 to cut the bottom plate of the retention bag and the surface of the bottom plate of the retention bag is not a sharp angle. When the bottom plate of the retention bag is adapted to the stoma, the stimulation of the opening surface of the bottom plate of the retention bag on the stoma is reduced, which is conducive to the adaptation of the bottom plate of the retention bag to the stoma and reduces the discomfort of the patient.

[0043] The pad 3 is placed horizontally, and then the retention bag chassis is placed on the pad 3, and then the first support rod 1 is placed on the pad 3. Under the action of the positioning column 31, the first support rod 1 is in a vertical state, and the tool assembly 5 is arranged parallel to the first support rod 1. The tool assembly 5 is also in a vertical state. The tool 53 is adjusted so that the tool 53 passes through the retention bag chassis and just contacts the pad 3, and the position of the tool 53 relative to the sleeve 52 remains unchanged, so that the second support rod 2 rotates, and the second support rod 2 rotates with the tool 53. The tool 53 cuts the retention bag chassis while rotating, thereby realizing the cutting of the retention bag chassis; during the rotation process, the tool 53 is always in a vertical state and does not move up and down, so that the cutting depth of the retention bag chassis by the tool 53 remains unchanged, thereby improving the stability of cutting the retention bag chassis.

[0044] As a preferred implementation, based on the above-mentioned implementation, further, the connecting block 4 is rotatably arranged on the first support rod 1 .

[0045] The connecting block 4 is rotatably arranged on the first support rod 1. With this arrangement, during the rotation of the second support rod 2, the first support rod 1 remains relatively motionless, which is convenient for controlling the first support rod 1 to always remain in a vertical state. The tool 53 is parallel to the first support rod 1, which is beneficial for controlling the tool 53 to maintain vertical rotation, and is beneficial for controlling the cutting depth of the retention bag chassis by the tool 53, thereby improving the stability of cutting the retention bag chassis.

[0046] As a preferred embodiment, on the basis of the above-mentioned method, further, the tool assembly 5 also includes a push rod 51, the push rod 51 is threadedly connected to the sleeve 52, the top of the tool 53 is against the bottom of the push rod 51, and a spring 54 is arranged between the sleeve 52 and the tool 53, and the spring 54 is sleeved on the tool 53. Under the action of the push rod 51, the tool 53 puts the spring 54 in a compressed state.

[0047] The push rod 51 is rotated, and the push rod 51 moves downward, and the push rod 51 pushes the cutter 53 to move downward, and at the same time, the spring 54 is further compressed. Under the action of the push rod 51, the cutter 53 penetrates the chassis; the threaded connection ensures that the push rod 51 and the sleeve 52 are relatively fixed, so that the cutter 53 will not move upward, and the further compressed spring 54 exerts a greater force on the cutter 53, increasing the tendency of the cutter 53 to move relative to the sleeve 52 into the sleeve 52, so that the cutter 53 will not move downward; in the process of the cutter 53 rotating to cut the chassis, the cutter 53 will not move up and down, which is conducive to the control of the cutting depth of the retention bag chassis by the cutter 53, and improves the stability of cutting the retention bag chassis;

[0048] The push rod 51 is threadedly connected to the sleeve 52, and the push rod 51 can be removed from the sleeve 52, and then the tool 53 in the sleeve 52 can be taken out. After the tool 53 is worn, it is convenient to replace the tool 53; at the same time, when the retention bag cutter is not needed, the push rod 51 can be adjusted to shrink the tool 53 into the sleeve 52 for easy storage, preventing damage to the tool 53 or accidental injury by the tool 53, thereby improving the flexibility of the use of the retention bag cutter.

[0049] As a preferred embodiment, on the basis of the above-mentioned manner, further, the bottom of the sleeve 52 includes a bottom surface 522, and the bottom surface 522 is planar.

[0050] The surface of the retention bag chassis is usually a plane, and the bottom surface 522 of the bottom of the sleeve 52 is set to a plane. In this way, the contact between the bottom surface 522 of the bottom of the sleeve 52 and the surface of the retention bag chassis is a plane-to-plane contact, which increases the contact area between the bottom surface 522 of the bottom of the sleeve 52 and the surface of the retention bag chassis. During the rotation of the tool 53, it is beneficial to control the cutting depth of the retention bag chassis by the tool 53 to remain unchanged, which is beneficial to the cutting of the retention bag chassis by the tool 53, and further improves the stability of cutting the retention bag chassis.

[0051] Example 2: See Figure 2-4 As shown,

[0052] On the basis of the technical solution of embodiment 1, further, the tool assembly 5 is slidably connected to the second support rod 2, and a first tightening knob 22 is provided on the second support rod 2, and the first tightening knob 22 is used to fix the tool assembly 5 relative to the second support rod 2.

[0053] The tool assembly 5 is slidably connected to the second support rod 2. By adjusting the relative positions of the tool assembly 5 and the second support rod 2, the distance between the bottom surface 522 of the sleeve 52 and the surface of the retention bag chassis can be adjusted to achieve that the bottom surface 522 of the sleeve 52 just contacts the surface of the retention bag chassis. The setting of the first fastening knob 22 fixes the distance between the bottom surface 522 of the sleeve 52 and the surface of the retention bag chassis. Then, it is only necessary to rotate the push rod 51 to make the tool 53 extend out of the sleeve 52 and pass through the retention bag chassis, thereby ensuring that the cutting depth of the retention bag chassis by the tool 53 remains unchanged, which is beneficial to the cutting of the retention bag chassis by the tool 53 and improves the stability of cutting the retention bag chassis.

[0054] As a preferred embodiment, on the basis of the above method, further, a first scale line 511 is provided on the push rod 51, and a second scale line 521 is provided on the sleeve 52. The first scale line 511 is used to indicate the sliding distance of the tool 53 relative to the sleeve 52, and the second scale line 521 is used to indicate the sliding distance of the tool assembly 5 relative to the second support rod 2.

[0055] Rotate the push rod 51 so that the tool 53 just does not extend out of the through hole at the bottom of the sleeve 52, and note the first scale line 511 at this time, then place the first support rod 1 vertically on the pad 3, adjust the tool assembly 5 so that the bottom of the sleeve 52 just contacts the pad 3, and note the second scale line 521 at this time; place the pad 3 under the retention bag chassis, then place the first support rod 1 vertically on the pad 3, adjust the tool assembly 5 so that the bottom of the sleeve 52 contacts the surface of the retention bag chassis, and know the distance moved by the tool assembly 5, that is, the thickness of the retention bag chassis, through the change of the second scale line 521, keep the tool assembly 5 in contact with the surface of the retention bag chassis, adjust the push rod 51 so that the tool 5 3 extends out from the through hole at the bottom of the sleeve 52. The extension distance of the cutter 53 can be known through the change of the first scale line 511, and the depth of the cutter 53 piercing the bottom plate of the retention bag can be further known. When the extension distance of the cutter 53 is equal to the moving distance of the cutter assembly 5, the adjustment of the push rod 51 is stopped. At this time, the cutter 53 just passes through the bottom plate of the retention bag. The position of the push rod 51 relative to the sleeve 52 remains unchanged, so that the cutter 53 rotates around the first support rod 1 to complete the cutting of the bottom plate of the retention bag. The setting of the first scale line 511 and the second scale line 521 improves the control of the cutting depth of the bottom plate of the retention bag by the cutter 53, is conducive to the cutting of the bottom plate of the retention bag by the cutter 53, and improves the stability of cutting the bottom plate of the retention bag.

[0056] Example 3: See Figure 3 As shown,

[0057] On the basis of the technical solution of the first embodiment, further, a second tightening knob 41 is provided on the connecting block 4 , and the second tightening knob 41 is used to fix the second support rod 2 relative to the connecting block 4 .

[0058] The second support rod 2 is slidably connected to the connecting block 4. By adjusting the relative position of the second support rod 2 and the connecting block 4, the distance between the tool 53 and the first support rod 1 can be adjusted to achieve cutting of openings of different sizes. The setting of the second fastening knob 41 fixes the distance between the tool 53 and the first support rod 1, ensuring that the tool 53 does not move in the rotary cutting process. The tool 53 rotates one circle before the starting point of the tool 53 coincides with the end point, thereby achieving cutting of the retention bag chassis.

[0059] As a preferred implementation, based on the above-mentioned implementation, further, a third scale line 21 is provided on the second support rod 2 , and the third scale line 21 is used to indicate the sliding distance of the second support rod 2 relative to the connecting block 4 .

[0060] According to the marking of the third scale line 21, the sliding distance of the second support rod 2 relative to the connecting block 4 can be clearly known, and the distance between the cutter 53 and the first support rod 1 can be further known, and the opening size left after the cutter 53 cuts the retention bag chassis can be further known; according to the specific size of the stoma measured, the retention bag chassis of the specific size can be cut through the marking of the third scale line 21, so as to achieve a more accurate adaptation of the retention bag chassis and the stoma, which is conducive to the cutting of the retention bag chassis.

[0061] Example 4: See Figure 3 As shown,

[0062] On the basis of the technical solution of the first embodiment, further, the pad 3 is in a disc shape, and the outer circle size of the pad 3 is larger than the maximum opening size that can be cut from the bottom plate of the retention bag.

[0063] Usually, the bottom plate of the retention bag is in the shape of a disc, and the pad 3 is set to be in the shape of a disc to fit the bottom plate of the retention bag. The outer circle size of the pad 3 is set to be larger than the maximum opening size that can be cut of the bottom plate of the retention bag. In this way, when cutting the bottom plate of the retention bag, after the tool 53 penetrates the bottom plate, it contacts the pad 3 and will not scratch the bag body of the retention bag; at the same time, the area of ​​the bottom surface 522 of the pad 3 is increased, so that the pad 3 is placed on the plane more stably, and further the first support rod 1 can be more stably in a vertical state, which is conducive to controlling the tool 53 to maintain vertical rotation, and is conducive to the tool 53 to control the cutting depth of the bottom plate of the retention bag, and further improves the stability of cutting the bottom plate of the retention bag.

[0064] As a preferred embodiment, on the basis of the above-mentioned manner, further, a clamping ring 6 is provided on the first support rod 1 , and the clamping ring 6 is used to limit the movement of the connecting block 4 along the axial direction of the first support rod 1 .

[0065] The setting of the clamping ring 6 enables the connecting block 4 to only rotate radially around the first support rod 1. Accordingly, the second support rod 2 connected to the connecting block 4 and the tool 53 on the second support rod 2 can also only rotate radially around the first support rod 1. When the tool 53 rotates to cut the retention bag chassis, the tool 53 will not move up and down, which is conducive to the cutting of the retention bag chassis by the tool 53 and improves the stability of cutting the retention bag chassis.

[0066] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A cutter for retention bags, characterized in that: The invention comprises a first support rod, a second support rod and a pad, wherein a positioning column is arranged on the pad, a countersunk hole is arranged at the bottom of the first support rod, the positioning column and the countersunk hole are adapted to make the first support rod perpendicular to the pad, a connecting block is arranged on the first support rod, the second support rod is slidably connected to the connecting block, the second support rod can rotate around the first support rod, a tool assembly is arranged on the second support rod, the tool assembly is arranged parallel to the first support rod, the tool assembly comprises a sleeve and a tool, the tool can be slidably arranged in the sleeve, the blade of the tool can extend from the bottom of the sleeve to the outside of the bottom of the sleeve, and the tool can keep its position unchanged relative to the sleeve.

2. A retention bag cutter as claimed in claim 1, characterized in that: The connecting block is rotatably arranged on the first support rod.

3. A retention bag cutter as claimed in claim 1, characterized in that: The tool assembly also includes a push rod, which is threadedly connected to the sleeve. The tool is against the push rod. A spring is provided between the sleeve and the tool. The spring is sleeved on the tool. Under the action of the push rod, the tool compresses the spring.

4. A retention bag cutter as claimed in claim 1, characterized in that: The sleeve bottom comprises a bottom surface, and the bottom surface is planar.

5. A retention bag cutter as claimed in claim 4, characterized in that: The tool assembly is slidably connected to the second support rod. The second support rod is provided with a first tightening knob, and the first tightening knob is used to fix the tool assembly relative to the second support rod.

6. A retention bag cutter as claimed in claim 3, characterized in that: The push rod is provided with a first scale line, and the sleeve is provided with a second scale line. The first scale line is used to indicate the sliding distance of the tool relative to the sleeve, and the second scale line is used to indicate the sliding distance of the tool assembly relative to the second support rod.

7. A retention bag cutter as claimed in claim 1, characterized in that: The connecting block is provided with a second fastening knob, and the second fastening knob is used to fix the second support rod relative to the connecting block.

8. A retention bag cutter as claimed in claim 1, characterized in that: The second support rod is provided with a third scale line, and the third scale line is used to indicate the sliding distance of the second support rod relative to the connecting block.

9. A retention bag cutter as claimed in claim 8, characterized in that: The pad is in the shape of a disc, and the outer circle size of the pad is larger than the maximum opening size that can be cut from the retention bag bottom plate.

10. A retention bag cutter as claimed in claim 1, characterized in that: A clamping ring is arranged on the first support rod, and the clamping ring is used to limit the movement of the connecting block along the axial direction of the first support rod.

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