An apparatus for opening

Abstract

This utility model discloses an opening device, comprising: a bracket; a base disposed on the bracket, with a clearance groove on the upper part of the base and a limiting groove on the side wall of the base, the limiting groove communicating with the clearance groove, the limiting groove for accommodating the workpiece to be opened; a cutter disposed on the bracket, with an upper cutting edge on the side of the cutter facing the base, the cutter being able to slide relative to the base along a first direction, so that the upper cutting edge moves above or below the limiting groove; and a driving mechanism directly or indirectly connected to the cutter, the driving mechanism being used to drive the cutter to slide along the first direction. The opening device provided by this utility model is easy to operate, and operators can use this opening device to cut suction ports on the sealing film, thereby quickly and efficiently cutting suction ports of uniform size and shape on the sealing film of the tobacco stack.

Description

Technical Field

[0001] This utility model relates to the field of hole-opening equipment, and in particular to a hole-opening device. Background Technology

[0002] Tobacco leaves are a crucial raw material for cigarette production. Problems at any stage, from seedling cultivation to cigarette manufacturing, can lead to a decline in tobacco leaf quality, thus affecting the quality of the cigarettes. Tobacco leaf aging is a vital step in tobacco processing. During aging, raw tobacco leaves are highly susceptible to infestation by pests, which negatively impacts their smoking quality. Therefore, regular pest control measures must be implemented during the storage and maintenance of raw tobacco leaves.

[0003] Storage and transportation stations typically use the nitrogen-enriched, low-oxygen method for pest control. During this process, a sealing film is used to cover the entire stack of tobacco, followed by sealing using both floor sealing and clip sealing methods. Operators then cut two suction ports into the sealing film and insert suction nozzles, one for filling with nitrogen and the other for venting oxygen. Only when the airtightness of the sealed stack reaches level two or higher can the pest control process proceed.

[0004] Currently, operators manually cut the suction ports, a time-consuming process that results in inconsistent sizes and incomplete shapes. During airtightness testing of the sealed tobacco stack, repeated suction can cause deformation and tearing of the suction ports, leading to leaks and affecting the overall airtightness of the stack. When the airtightness test fails, operators must inspect and reseal the suction ports, undergoing another airtightness test, which is not only complex but also wastes manpower and resources, impacting production efficiency. Utility Model Content

[0005] The purpose of this invention is to solve the technical problems of manual cutting of suction ports in the prior art, which is not only time-consuming but also results in suction ports with inconsistent sizes and incomplete shapes. This invention provides a hole-cutting device that operators can use to cut suction ports on the sealing film. The operation is convenient, enabling quick and efficient cutting of suction ports with uniform size and shape from the sealing film of the tobacco stack.

[0006] To solve the above-mentioned technical problems, an embodiment of this utility model discloses an opening device, comprising:

[0007] support;

[0008] The base is mounted on the support. A clearance groove is provided on the top of the base, and a limiting groove is provided on the side wall of the base. The limiting groove is connected to the clearance groove and is used to accommodate the workpiece to be drilled.

[0009] A cutter is mounted on a bracket. The cutter has an upper blade on the side facing the base. The cutter can slide relative to the base in a first direction so that the upper blade moves above or below the limiting groove.

[0010] The drive mechanism is directly or indirectly connected to the cutter, and is used to drive the cutter to slide along a first direction.

[0011] When it is necessary to punch a hole in the sealing membrane, first determine the punching location, and then insert the area on the sealing membrane to be punched into the limiting groove. Subsequently, operate the drive mechanism to move the cutter downwards in the first direction, causing the upper blade to move below the limiting groove. During this process, the upper blade can cut a regularly shaped hole in the sealing membrane. After cutting, the operator operates the drive mechanism to move the cutter upwards in the first direction until the upper blade moves above the limiting groove, completing the reset, ready for the next punching operation.

[0012] Using the above technical solution, a suction port with standardized size and complete shape can be quickly cut out on the sealing membrane, which can replace the traditional manual cutting process and greatly improve the production efficiency and shape consistency of the suction port.

[0013] Optionally, the bracket is provided with a first cavity extending along a first direction, the first cavity having a top wall and a bottom wall disposed opposite to each other along the first direction, and the driving mechanism includes:

[0014] The drive shaft is partially located in the first cavity and can slide between the first position and the second position along the first direction; a first gasket and a second gasket are fixedly connected to the outer wall of the drive shaft, and the first gasket and the second gasket are spaced apart along the first direction; the two ends of the drive shaft pass through the top wall and the bottom wall respectively and extend out of the bracket, and the lower end of the drive shaft is connected to the cutter.

[0015] The first elastic element is sleeved on the drive shaft and is disposed between the top wall and the first gasket. The first elastic element is capable of generating compression deformation along the first direction.

[0016] When the drive shaft is in the first position, the second washer and the bottom wall are spaced apart along the first direction, the first elastic element is in a compressed state, and the upper blade is outside the clearance groove; when the drive shaft is in the second position, the second washer is in direct or indirect contact with the bottom wall, and the upper blade is inserted into the clearance groove.

[0017] The above technical solution, which uses a first elastic element in conjunction with a drive shaft, has a simple structure and good cutting effect.

[0018] Optionally, the bracket is provided with a sliding channel extending along a second direction, which is perpendicular to the first direction. The sliding channel communicates with the first cavity. The opening device further includes:

[0019] The limiting member is at least partially disposed within the sliding channel, and the limiting member is capable of sliding between the third position and the fourth position along the second direction; the two ends of the limiting member along the second direction are a locking end and a fixing end, respectively.

[0020] When the limiting member is in the third position, the locking end extends into the first cavity and can contact the bottom of the first gasket in the first position; when the limiting member is in the fourth position, along the first direction, the projection of the first gasket and the projection of the limiting member do not coincide at all.

[0021] The above technical solution provides a simple mechanical locking structure, convenient operation, and the ability to quickly lock the position of the drive shaft, while also having low manufacturing and maintenance costs.

[0022] Optionally, the end of the sliding channel away from the first cavity is provided with a second cavity extending in the second direction, and the opening device further includes:

[0023] The trigger is slidably disposed in the sliding channel and is connected to the fixed end of the limiting member. The trigger is used to drive the limiting member to slide in the second direction.

[0024] A guide shaft extends in a second direction, one end of which is connected to the trigger, and the other end of which is inserted into the second cavity;

[0025] The second elastic element is disposed in the second cavity. One end of the second elastic element abuts against the end of the guide shaft, and the other end of the second elastic element abuts against the inner wall of the second cavity on the side away from the sliding channel. The second elastic element can generate compression deformation along the second direction.

[0026] Using the above technical solution, the operator can easily slide the limiting component by pulling the trigger. Furthermore, the limiting component can slide autonomously to the third position under the elastic action of the second elastic component to lock the drive shaft, thus keeping the drive shaft in the first position.

[0027] Optionally, the upper end of the first cavity is provided with an internal thread, and the opening device also includes a screw cap, which is at least partially disposed in the first cavity and threadedly connected to the internal thread. The lower surface of the screw cap is a top wall; the screw cap is provided with a first inner hole, and the drive shaft passes through the first inner hole.

[0028] By adopting the above technical solution, the elastic potential energy of the first elastic element can be adjusted by rotating the screw cap to adjust the cutting force of the cutter, so that the hole-opening device can adapt to the hole-opening requirements of materials of different thicknesses.

[0029] Optionally, the shape of the relief groove is adapted to the shape of the upper cutting edge, and the lower edge of the limiting groove is provided with a lower cutting edge.

[0030] By employing the above technical solution, the shape of the relief groove matches that of the upper cutting edge, enabling the groove wall to provide all-around rigid support for the cutter, effectively resisting lateral forces, radial forces, and torsional loads generated during cutting. Simultaneously, the relief groove restricts the cutter's displacement in the lateral direction, reducing vibration and wobbling, and ensuring cutting accuracy. Furthermore, compared to single-blade cutting, the combined cutting of the upper and lower cutting edges avoids slanted cuts, burrs, or tears, improving the quality of the suction port.

[0031] Optionally, the upper blade is round.

[0032] Optionally, it also includes a buffer pad, which is disposed on the bottom wall, and when the drive shaft is in the second position, the second pad contacts the buffer pad.

[0033] By employing the above technical solution, the buffer pad can absorb the impact and vibration of the drive mechanism during cutting, protecting the drive mechanism and extending its service life. Furthermore, the buffer pad helps maintain the operational stability of the drive mechanism itself, thereby improving the cutting quality of the device.

[0034] Optionally, the drive mechanism also includes a handle, which is fixedly connected to the upper end of the drive shaft.

[0035] By adopting the above technical solution, the handle makes it easy for the operator to pull the drive shaft, making operation convenient. Attached Figure Description

[0036] Figure 1 This diagram shows a structural schematic of an opening device provided in an embodiment of the present invention;

[0037] Figure 2 This is a top view of an opening device provided in an embodiment of the present invention;

[0038] Figure 3 Show Figure 2 Sectional view along axis AA;

[0039] Figure 4 This diagram shows a structural schematic of the cutter and base provided in an embodiment of the present invention;

[0040] Figure 5 Show Figure 4 BB-direction sectional view;

[0041] Figure 6 This diagram shows the bottom surface of a cutter provided in one embodiment of the present invention.

[0042] Figure label:

[0043] 1. Bracket, 11. First cavity, 111. Top wall, 112. Bottom wall, 12. Sliding channel, 13. Second cavity, 2. Base, 21. Relief groove, 22. Limiting groove, 23. Lower blade, 3. Cutting blade, 31. Upper blade, 4. Drive mechanism, 41. Drive shaft, 411. First washer, 412. Second washer, 42. First elastic element, 43. Handle, 5. Limiting element, 51. Locking end, 52. Fixed end, 6. Trigger, 61. Trigger hole, 7. Guide shaft, 8. Second elastic element, 9. Screw cap, 91. First inner hole, 10. Buffer pad. Detailed Implementation

[0044] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0045] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0046] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model 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. Therefore, they should not be construed as limitations on the utility model.

[0047] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0048] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0049] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0050] See Figure 1 and Figure 3 This utility model provides an opening device for opening holes in the sealing film of a tobacco stack, including a bracket 1, a base 2, a cutter 3 and a drive mechanism 4.

[0051] The base 2 is mounted on the support 1. A clearance groove 21 is provided on the top of the base 2, and a limiting groove 22 is provided on the side wall of the base 2. The limiting groove 22 is connected to the clearance groove 21 and is used to accommodate the workpiece to be drilled (i.e., the sealing membrane). The cutter 3 is mounted on the support 1. An upper cutting edge 31 is provided on the side of the cutter 3 facing the base 2. The cutter 3 can move relative to the base 2 along a first direction (e.g., ...). Figure 1 The upper blade 31 slides (in the X direction shown) to move above or below the limiting groove 22. The drive mechanism 4 is directly or indirectly connected to the cutter 3, and the drive mechanism 4 is used to drive the cutter 3 to slide along the first direction. Exemplarily, the base 2 and the bracket 1 are connected by bolt threads.

[0052] When it is necessary to punch a hole in the sealing membrane, first determine the punching location, and then insert the area on the sealing membrane to be punched into the limiting groove 22. Subsequently, operate the drive mechanism 4 to move the cutter 3 downwards along the first direction, causing the upper blade 31 to move below the limiting groove 22. During this process, the upper blade 31 can cut a regularly shaped hole in the sealing membrane. After cutting, the operator operates the drive mechanism 4 to move the cutter 3 upwards along the first direction until the upper blade 31 moves above the limiting groove 22 (e.g., ...). Figure 1 As shown in the image, the reset is complete, ready for the next drilling operation.

[0053] The opening device provided by this utility model has a simple structure and is easy to operate. It can quickly cut a suction port with a standard size and complete shape on the sealing membrane, thereby replacing the traditional manual cutting process, greatly improving the production efficiency of the suction port and improving the shape consistency of the suction port.

[0054] Specifically, see Figure 3 and Figure 4 The shape of the relief groove 21 is adapted to the shape of the upper cutting edge 31, and the lower edge of the limiting groove 22 is provided with a lower cutting edge 23. The matching shape of the relief groove 21 and the upper cutting edge 31 allows the wall of the relief groove 21 to provide all-round rigid support for the cutter 3, effectively resisting the lateral force, radial force and torsional load generated during cutting. At the same time, the relief groove 21 can limit the displacement of the cutter 3 in the lateral direction, reduce vibration and shaking, and ensure cutting accuracy. Moreover, compared with single-blade cutting, the cooperation of the upper cutting edge 31 and the lower cutting edge 23 can avoid the cut from tilting, burrs or tearing, and improve the quality of the suction port.

[0055] For example, see Figure 5 and Figure 6 The upper blade 31 is circular, and the lower blade 23 is semi-circular. Both the cutter 3 and the base 2 are made of A2 steel. The projection of the limiting groove 22 on the horizontal plane is semi-circular, and the radius of the projection of the limiting groove 22 is larger than the radius of the lower blade 23. Because the sealing membrane is large and needs to be perforated at a specific location, the area to be perforated cannot be completely placed in the limiting groove 22. Therefore, a semi-circular cutting method is used for perforation. The semi-circular cutting method involves folding the membrane in the area to be perforated and pushing it into the limiting groove 22. The cutter 3, driven by the drive mechanism 4, works in conjunction with the lower blade 23 to cut the membrane. After cutting, a semi-circular cut area is generated on the folded area. When unfolded, a regularly shaped circular suction port is obtained.

[0056] Further, see Figure 3 The bracket 1 has a first cavity 11 extending along a first direction. The first cavity 11 has a top wall 111 and a bottom wall 112 arranged opposite to each other along the first direction. The drive mechanism 4 includes a drive shaft 41 and a first elastic element 42. Exemplarily, the first cavity 11 is cylindrical.

[0057] Specifically, see Figure 3The drive shaft 41 is partially disposed within the first cavity 11 and is capable of sliding between a first position and a second position along a first direction. A first washer 411 and a second washer 412 are fixedly connected to the outer wall of the drive shaft 41, and the first washer 411 and the second washer 412 are spaced apart along the first direction. Exemplarily, the radii of the first washer 411 and the second washer 412 are equal, and the outer diameters of the first washer 411 and the second washer 412 are slightly smaller than the inner diameter of the first cavity 11. Both ends of the drive shaft 41 penetrate the top wall 111 and the bottom wall 112 respectively and extend outside the bracket 1. The lower end of the drive shaft 41 is connected to the cutter 3. This application does not specifically limit the connection method between the lower end of the drive shaft 41 and the cutter 3; it can be a threaded connection or other connection methods. In some embodiments of this application, the lower end of the drive shaft 41 is provided with an external thread, and the cutter 3 is provided with a matching threaded hole, and the lower end of the drive shaft 41 is threadedly connected to the cutter 3.

[0058] Specifically, see Figure 3 The first elastic element 42 is sleeved on the drive shaft 41 and is disposed between the top wall 111 and the first gasket 411. The first elastic element 42 is capable of generating compressive deformation along a first direction. For example, the first elastic element 42 is a compression spring.

[0059] The drive shaft 41 drives the cutter 3 downwards to cut the sealing membrane. When the drive shaft 41 is in the first position, as... Figure 3 As shown, the second gasket 412 and the bottom wall 112 are spaced apart along the first direction, the first elastic member 42 is in a compressed state, and the upper blade 31 is located above the limiting groove 22. When the drive shaft 41 is in the second position, the second gasket 412 is in direct or indirect contact with the bottom wall 112, and the upper blade 31 is located below the limiting groove 22.

[0060] When the drive shaft 41 is in the first position, the first elastic element 42 is compressed, deforming to store spring potential energy. As the drive shaft 41 moves from the first position to the second position, the first elastic element 42 gradually returns to its free state, and its elastic potential energy is instantaneously released and converted into kinetic energy, propelling the cutter 3 to impact the workpiece to be drilled at high speed. The structure using the first elastic element 42 in conjunction with the drive shaft 41 is simple and provides good cutting results.

[0061] Specifically, see Figure 3 The bracket 1 is provided with a second direction (such as...) Figure 3The sliding channel 12 extends in the Y direction (as shown in the diagram), with the second direction perpendicular to the first direction, and is connected to the first cavity 11. The opening device also includes a limiting member 5, which is at least partially disposed within the sliding channel 12. The limiting member 5 is slidable between a third position and a fourth position along the second direction, and its two ends along the second direction are a locking end 51 and a fixing end 52, respectively. Exemplarily, the locking end 51 of the limiting member 5 is inclined relative to the vertical direction, and the angle between the edge of the locking end 51 and the upper edge of the limiting member 5 is less than 90°.

[0062] When the limiting member 5 is in the third position, the locking end 51 extends into the first cavity 11, and the locking end 51 can contact the bottom of the first pad 411 located in the first position. When the limiting member 5 is in the fourth position, along the first direction, the projection of the first pad 411 does not coincide with the projection of the limiting member 5 at all.

[0063] When the operator moves the drive shaft 41 to the first position, the first elastic element 42 is in a compressed state. Then, the operator moves the limiting element 5 to the third position, and the locking end 51 of the limiting element 5 engages with the bottom of the first pad 411 to limit the first pad 411, preventing the drive shaft 41 from moving downwards and keeping the first elastic element 42 in a compressed state. When it is necessary to cut the workpiece to be drilled, the operator slides the limiting element 5 to the fourth position, and the locking end 51 of the limiting element 5 retracts into the sliding channel 12. The elastic potential energy of the first elastic element 42 is released instantaneously, pushing the drive shaft 41 downwards along the first direction to the second position to complete the cutting. The above-mentioned mechanical locking structure is simple, easy to operate, and can quickly lock the position of the drive shaft 41, with low manufacturing and maintenance costs.

[0064] Specifically, see Figure 3 The sliding channel 12 has a second cavity 13 extending in the second direction at one end away from the first cavity 11. The opening device also includes a trigger 6, a guide shaft 7, and a second elastic element 8.

[0065] The trigger 6 is slidably disposed within the sliding channel 12. The trigger 6 is connected to the fixed end 52 of the limiting member 5, and is used to drive the limiting member 5 to slide in the second direction. Exemplarily, the trigger 6 has a trigger hole 61 for the operator to insert their finger to pull the trigger 6. This application does not specifically limit the connection method between the trigger 6 and the limiting member 5; it can be a threaded connection, welding, or other connection methods. In some embodiments of this application, both the trigger 6 and the fixed end 52 of the limiting member 5 have threaded holes of matching size, and the trigger 6 and the fixed end 52 of the limiting member 5 are connected by bolt threads.

[0066] The guide shaft 7 extends along a second direction, with one end connected to the trigger 6 and the other end inserted into the second cavity 13. Exemplarily, the end of the guide shaft 7 near the trigger 6 has an external thread, and the end of the trigger 6 near the guide shaft 7 has a matching threaded hole, thus connecting the guide shaft 7 to the trigger 6. The end of the guide shaft 7 away from the trigger 6 has a flathead (not shown in the figure) for mounting the guide shaft 7 onto the trigger 6 using a flathead screwdriver.

[0067] The second elastic element 8 is disposed within the second cavity 13. One end of the second elastic element 8 abuts against the end of the guide shaft 7, and the other end of the second elastic element 8 abuts against the inner wall of the second cavity 13 on the side away from the sliding channel 12. The second elastic element 8 is capable of generating compressive deformation along the second direction. For example, the second elastic element 8 is a compression spring.

[0068] Before drilling, the operator must first move the drive shaft 41 to the first position. Specifically, the operator pulls the trigger 6 in the second direction away from the drive shaft 41, causing the locking end 51 to retract into the sliding channel 12, compressing the second elastic element 8. Then, the operator moves the drive shaft 41 back to the first position and releases the trigger 6. The second elastic element 8 automatically resets, and the limiting member 5 can slide autonomously to the third position under the elastic action of the second elastic element 8 to lock the drive shaft 41, keeping the drive shaft 41 in the first position.

[0069] Further, see Figure 3 The upper end of the first cavity 11 is provided with an internal thread. The opening device also includes a screw cap 9, which is at least partially disposed within the first cavity 11 and threadedly connected to the internal thread. The lower surface of the screw cap 9 is a top wall 111. The screw cap 9 is provided with a first inner hole 91, through which the drive shaft 41 passes. Exemplarily, the screw cap 9 is a hexagonal nut cap, and the inner diameter of the first inner hole 91 is slightly larger than the outer diameter of the drive shaft 41.

[0070] When the drive shaft 41 is in the first position and the limiting member 5 is in the third position, the elastic potential energy of the first elastic member 42 can be adjusted by rotating the screw cap 9. When the screw cap 9 is rotated upward, the distance between the first washer 411 and the top wall 111 (e.g., Figure 3 As the elastic potential energy of the first elastic element 42 increases (as shown in d1), the deformation of the first elastic element 42 decreases, the spring energy decreases, and thus the cutting force of the cutter 3 decreases. When the screw cap 9 is rotated downwards, the distance between the first washer 411 and the top wall 111 decreases, the deformation of the first elastic element 42 increases, the spring energy increases, and thus the cutting force of the cutter 3 increases. The cutting force of the cutter 3 can be adjusted by rotating the screw cap 9 to adjust the elastic potential energy of the first elastic element 42, so that the hole-opening device can adapt to the hole-opening requirements of materials of different thicknesses.

[0071] Further, see Figure 3 The opening device also includes a buffer pad 10, which is disposed on the bottom wall 112. When the drive shaft 41 is in the second position, the second pad 412 contacts the buffer pad 10. Exemplarily, the buffer pad 10 is made of felt and has an inner hole that is clearance-fitted with the drive shaft 41. The buffer pad 10 can absorb the impact and vibration of the drive mechanism 4 during cutting, protecting the drive mechanism 4 and extending its service life. Furthermore, the buffer pad 10 helps maintain the operational stability of the drive mechanism 4, thereby improving the cutting quality of the device.

[0072] Further, see Figure 2 and Figure 3 The drive mechanism 4 also includes a handle 43, which is threadedly connected to the upper end of the drive shaft 41. Exemplarily, the upper end of the drive shaft 41 has an external thread. The handle 43 is spherical and has a threaded hole that matches the upper end of the drive shaft 41. The handle 43 facilitates the operator's pulling of the drive shaft 41, making operation convenient.

[0073] Before use, the operator holds the bracket 1 with one hand and inserts two fingers into the trigger hole 61. Using these fingers, the operator pulls the trigger 6 in the second direction away from the drive shaft 41, causing the locking end 51 of the limiting member 5 to retract into the sliding channel 12. At this time, the operator pulls the handle 43 upwards with the other hand, causing the drive shaft 41 to move to the first position. Then, the operator releases the trigger 6, and the limiting member 5 automatically resets to the third position under the action of the second elastic member 8, locking the drive shaft 41 and keeping it in the first position.

[0074] After determining the drilling location, the operator folds the sealing film at the area to be drilled in half and places it in the limiting groove 22, ensuring its lower surface contacts the lower blade 23. The operator then grips the bracket 1 again and pulls the trigger 6 away from the drive shaft 41. The limiting member 5 retracts into the sliding channel 12 to release the lock. Under the push of the elastic potential energy of the first elastic member 42, the drive shaft 41 quickly moves downward to the second position, where the second gasket 412 contacts the buffer gasket 10, and the upper blade 31 completes the cutting of the sealing film. Subsequently, the operator unfolds the sealing film to obtain a standardized, regularly shaped circular suction port. After drilling, the above steps are repeated to reset the cutter 3 to the first position, and holes are drilled at other locations on the sealing film as needed. The opening device provided by this utility model has a simple structure and is easy to use. It can quickly and efficiently cut out suction ports with standardized size and shape on the sealing film of the smoke stack, so as to solve the problem that the holes of the sealed smoke stack are easy to fall off and break during the process of filling nitrogen and expelling oxygen through the suction port, thereby improving production efficiency.

[0075] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. An aperturing device characterized by, include: support; A base is provided on the bracket. A clearance groove is provided on the upper part of the base, and a limiting groove is provided on the side wall of the base. The limiting groove is connected to the clearance groove and is used to accommodate the workpiece to be drilled. A cutter is mounted on the bracket. The cutter has an upper blade on the side facing the base. The cutter can slide relative to the base in a first direction so that the upper blade moves above or below the limiting groove. A drive mechanism is directly or indirectly connected to the cutter, and the drive mechanism is used to drive the cutter to slide along the first direction.

2. The aperturing device of claim 1, wherein, The bracket is provided with a first cavity extending along the first direction, the first cavity having a top wall and a bottom wall disposed opposite to each other along the first direction, and the driving mechanism includes: A drive shaft is partially disposed within the first cavity and is capable of sliding between a first position and a second position along the first direction; a first gasket and a second gasket are fixedly connected to the outer side wall of the drive shaft, and the first gasket and the second gasket are spaced apart along the first direction; both ends of the drive shaft pass through the top wall and the bottom wall respectively and extend out of the bracket, and the lower end of the drive shaft is connected to the cutter. A first elastic element is sleeved on the drive shaft. The first elastic element is disposed between the top wall and the first gasket. The first elastic element is capable of generating compressive deformation along the first direction. When the drive shaft is in the first position, the second pad and the bottom wall are spaced apart along the first direction, the first elastic element is in a compressed state, and the upper blade is outside the relief groove; when the drive shaft is in the second position, the second pad is in direct or indirect contact with the bottom wall, and the upper blade is inserted into the relief groove.

3. The aperturing device of claim 2, wherein, The bracket is provided with a sliding channel extending in a second direction, which is perpendicular to the first direction. The sliding channel communicates with the first cavity. The opening device further includes: A limiting member is at least partially disposed within the sliding channel, and the limiting member is capable of sliding between a third position and a fourth position along the second direction; the two ends of the limiting member along the second direction are a locking end and a fixing end, respectively. When the limiting member is in the third position, the locking end extends into the first cavity, and the locking end can contact the bottom of the first pad located in the first position; when the limiting member is in the fourth position, along the first direction, the projection of the first pad and the projection of the limiting member do not coincide at all.

4. The aperturing device of claim 3, wherein, The sliding channel has a second cavity extending along the second direction at one end away from the first cavity, and the opening device further includes: A trigger is slidably disposed within the sliding channel, the trigger is connected to the fixed end of the limiting member, and the trigger is used to drive the limiting member to slide along the second direction; A guide shaft extends along the second direction, one end of which is connected to the trigger, and the other end of which is inserted into the second cavity; A second elastic element is disposed in the second cavity. One end of the second elastic element abuts against the end of the guide shaft, and the other end of the second elastic element abuts against the inner wall of the second cavity on the side away from the sliding channel. The second elastic element is capable of generating compressive deformation along the second direction.

5. The apparatus of claim 3, wherein The upper end of the first cavity is provided with an internal thread, and the opening device further includes a screw cap. The screw cap is at least partially disposed in the first cavity and is threadedly connected to the internal thread. The lower surface of the screw cap is the top wall. The screw cap is provided with a first inner hole, and the drive shaft passes through the first inner hole.

6. The aperturing device of claim 1, wherein, The shape of the relief groove is adapted to the shape of the upper blade, and the lower edge of the limiting groove is provided with a lower blade.

7. The opening device as described in claim 6, characterized in that, The upper blades are all circular.

8. The aperturing device of claim 2, wherein, It also includes a buffer pad disposed on the bottom wall, and when the drive shaft is in the second position, the second pad is in contact with the buffer pad.

9. The aperturing device of claim 2, wherein, The drive mechanism also includes a handle, which is fixedly connected to the upper end of the drive shaft.

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