A drill bit protector and a punching device for a bookbinding machine
By designing anti-jamming blocks and guide slope structures in the binding machine's drill sleeve, the problem of paper scraps getting stuck was solved, achieving a highly efficient and stable punching process.
Patent Information
- Application Number
- CN202522016558.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-19
AI Technical Summary
The drill sleeve of existing binding machines is prone to getting stuck due to paper scraps during the punching process, which leads to a decrease in punching efficiency and stability.
Design a binding machine anti-jamming drill sleeve, including a drill sleeve body and an anti-jamming block. The drill sleeve has mounting holes at both the top and bottom, and paper scraps are connected through the holes in the middle. The lower end of the anti-jamming block has a guide slope, and the outside of the drill sleeve has a paper scrap discharge hole. The paper scraps are directly thrown out or tilted under the action of centrifugal force to avoid jamming.
This improves the efficiency and stability of punching, avoids the problem of needing to stop and clean due to paper scraps getting stuck, and ensures the continuous and efficient operation of the equipment.
Smart Images
Figure CN224675091U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of binding equipment technology, and more specifically, relates to an anti-jamming drill sleeve for a binding machine and a punching device using the anti-jamming drill sleeve for a binding machine. Background Technology
[0002] Binding machines use a punching device to punch holes in paper. During the punching process, paper scraps need to pass through the drill bit and drill sleeve sequentially and be discharged last. The drill sleeve connects the drill bit and the punching motor. Currently, most drill sleeves suffer from poor structural design, causing columnar paper scraps to get stuck inside during their ascent. This prevents the paper scraps inside the drill bit from being discharged smoothly, and once stuck, they need to be manually removed, which is difficult and significantly affects the efficiency and stability of punching. Utility Model Content
[0003] The purpose of this application is to provide an anti-jamming drill sleeve for a binding machine, which aims to solve the problem that the drill sleeve in the existing punching device is prone to jamming with paper scraps.
[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: An anti-jamming drill sleeve for a binding machine is provided, comprising: a drill sleeve body and an anti-jamming block; the upper and lower ends of the drill sleeve body are respectively provided with an upper mounting hole and a lower mounting hole, the upper mounting hole and the lower mounting hole are connected by a paper scrap through hole, the anti-jamming block is installed in the upper mounting hole, the lower end of the anti-jamming block is provided with a guide slope, a paper scrap discharge hole is opened on the outer side wall of the drill sleeve body, the paper scrap discharge hole is directly opposite the guide slope, and the lower mounting hole is used to install a drill bit.
[0005] In one possible implementation, the diameter of the hole through which the paper scrap passes is larger than the inner diameter of the drill bit.
[0006] In one possible implementation, the diameter of the upper mounting hole is larger than the diameter of the hole through which the paper scraps pass.
[0007] In one possible implementation, the paper scraps pass through a hole within the horizontal projection range of the guide ramp.
[0008] In one possible implementation, the paper scrap discharge hole includes an upper waist-shaped hole and a lower waist-shaped hole that are interconnected. The upper waist-shaped hole and the lower waist-shaped hole correspond to the upper mounting hole and the paper scrap passage hole, respectively, and both the upper waist-shaped hole and the lower waist-shaped hole are arranged along the axial direction of the drill sleeve body.
[0009] In one possible implementation, the vertical projection of the guide ramp lies within the range of the upper waist-shaped hole.
[0010] In one possible implementation, the outer edge of the lower waist-shaped hole is chamfered.
[0011] In one possible implementation, the width of the upper waist-shaped hole is greater than or equal to the diameter of the upper mounting hole, and the width of the lower waist-shaped hole is greater than or equal to the diameter of the paper scrap passage hole.
[0012] In one possible implementation, an upper set screw hole for installing a set screw is provided on the outer side wall of the drill bushing body, and the drill bushing body is fixedly connected to the anti-jamming block through the set screw.
[0013] Compared with the prior art, the solution shown in this application embodiment is an anti-jamming drill sleeve for a binding machine. The upper and lower ends of the drill sleeve body are respectively opened with an upper mounting hole and a lower mounting hole. The upper mounting hole and the lower mounting hole are connected by a paper scrap through hole. An anti-jamming block is installed in the upper mounting hole. The lower end of the anti-jamming block is provided with a guide slope. A paper scrap discharge hole is opened on the outer side wall of the drill sleeve body. The paper scrap discharge hole penetrates the side wall of the drill sleeve body and is directly opposite the guide slope. The drill bit is installed in the lower mounting hole. As the drill bit rotates and moves downwards, paper scraps gradually form inside the drill bit's inner hole and then enter the paper scrap passage hole. Under normal conditions, the paper scraps are directly ejected from the paper scrap discharge hole under the action of centrifugal force. If the paper scraps are not ejected from the paper scrap passage hole, they will continue to move upwards and press against the guide slope of the anti-jamming block. Due to the lateral force, the paper scraps tilt towards one side of the paper scrap discharge hole and are eventually ejected, thus avoiding the phenomenon of paper scraps getting stuck in the drill sleeve. Since it is not necessary to stop the machine to remove paper scraps from the drill bit and drill sleeve, the drilling efficiency and stability are greatly improved.
[0014] Another object of this application is to provide a punching device, which includes any of the above-mentioned anti-jamming drill sleeves for binding machines.
[0015] Compared with the prior art, the punching device provided in this application uses an anti-jamming drill sleeve for binding machines. The upper and lower ends of the drill sleeve body are respectively opened with an upper mounting hole and a lower mounting hole. The upper mounting hole and the lower mounting hole are connected by a paper scrap through hole. An anti-jamming block is installed in the upper mounting hole. The lower end of the anti-jamming block is provided with a guide slope. A paper scrap discharge hole is opened on the outer side wall of the drill sleeve body. The paper scrap discharge hole penetrates the side wall of the drill sleeve body and is directly opposite the guide slope. The drill bit is installed in the lower mounting hole. As the drill bit rotates and moves downwards, paper scraps gradually form inside the drill bit's inner hole and then enter the paper scrap passage hole. Under normal conditions, the paper scraps are directly ejected from the paper scrap discharge hole under the action of centrifugal force. If the paper scraps are not ejected from the paper scrap passage hole, they will continue to move upwards and press against the guide slope of the anti-jamming block. Due to the lateral force, the paper scraps tilt towards one side of the paper scrap discharge hole and are eventually ejected, thus avoiding the phenomenon of paper scraps getting stuck in the drill sleeve. Since it is not necessary to stop the machine to remove paper scraps from the drill bit and drill sleeve, the drilling efficiency and stability are greatly improved. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 A three-dimensional structural diagram of the drilling device provided in the embodiments of this application. Figure 1 ; Figure 2 A three-dimensional structural diagram of the drilling device provided in the embodiments of this application. Figure 2 ; Figure 3 This is a cross-sectional view of the drilling device provided in the embodiments of this application; Figure 4 This is a cross-sectional structural diagram of the drill bushing body provided in an embodiment of this application.
[0018] In the diagram: 1. Drill bushing body; 101. Upper mounting hole; 102. Lower mounting hole; 103. Paper scrap passage hole; 104. Paper scrap discharge hole; 105. Upper waist-shaped hole; 106. Lower waist-shaped hole; 107. Chamfer; 108. Upper set screw hole; 109. Lower set screw hole; 2. Anti-jamming block; 201. Guide slope; 3. Drill bit; 4. Drilling motor. Detailed Implementation
[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0020] Please refer to the following: Figure 1 , Figure 3 and Figure 4 This application describes an anti-jamming drill sleeve for a binding machine. The anti-jamming drill sleeve includes: a drill sleeve body 1 and an anti-jamming block 2; the upper and lower ends of the drill sleeve body 1 are respectively provided with an upper mounting hole 101 and a lower mounting hole 102, which are connected by a paper scrap passage hole 103; the anti-jamming block 2 is installed in the upper mounting hole 101, and the lower end of the anti-jamming block 2 is provided with a guide slope 201; a paper scrap discharge hole 104 is opened on the outer side wall of the drill sleeve body 1, the paper scrap discharge hole 104 is directly opposite the guide slope 201; the lower mounting hole 102 is used to install a drill bit 3.
[0021] This embodiment provides an anti-jamming drill sleeve for a binding machine. Compared with the prior art, the upper and lower ends of the drill sleeve body 1 are respectively provided with an upper mounting hole 101 and a lower mounting hole 102. The upper mounting hole 101 and the lower mounting hole 102 are connected by a paper scrap passage hole 103. An anti-jamming block 2 is installed in the upper mounting hole 101. The lower end of the anti-jamming block 2 is provided with a guide slope 201. A paper scrap discharge hole 104 is provided on the outer side wall of the drill sleeve body 1. The paper scrap discharge hole 104 penetrates the side wall of the drill sleeve body 1 and is directly opposite the guide slope 201. The drill bit 3 is installed in the lower mounting hole 102. As the drill bit 3 rotates and moves downward, paper scraps gradually form inside the inner hole of the drill bit 3 and then enter the paper scrap passage hole 103. Under normal conditions, the paper scraps will be directly thrown out from the paper scrap discharge hole 104 under the action of centrifugal force. If the paper scraps are not thrown out in the paper scrap passage hole 103, they will continue to move upward and press against the guide slope 201 of the anti-jamming block 2. Due to the lateral force, the paper scraps will tilt to one side of the paper scrap discharge hole 104 and eventually be thrown out, thus avoiding the phenomenon of paper scraps getting stuck in the drill sleeve. Since it is not necessary to stop the machine to remove the paper scraps in the drill bit 3 and the drill sleeve, the drilling efficiency and stability are greatly improved.
[0022] In this embodiment, the angle between the guide slope 201 and the horizontal plane is 45°.
[0023] In some embodiments, please refer to Figure 3The diameter of the paper scrap through hole 103 is larger than the inner diameter of the drill bit 3. In this embodiment, as the drill bit 3 rotates downward, it gradually forms a paper scrap column. The outer diameter of the paper scrap column is the same as the inner diameter of the drill bit 3. The paper scrap column moves upward and enters the paper scrap through hole 103. Since the diameter of the paper scrap through hole 103 is larger than the inner diameter of the drill bit 3, there is a certain gap between the paper scrap column and the paper scrap through hole 103. During the upward movement of the paper scrap column within the paper scrap through hole 103, it will not rub against the inner wall of the paper scrap through hole 103, thereby reducing the resistance when the paper scrap column moves upward and making the upward movement of the paper scrap column smoother.
[0024] In some embodiments, please refer to Figure 3 and Figure 4 The diameter of the upper mounting hole 101 is larger than the diameter of the paper scrap passage hole 103. In this embodiment, the anti-jamming block 2 is cylindrical and detachably installed inside the upper mounting hole 101. The diameter of the anti-jamming block 2 is the same as the diameter of the upper mounting hole 101. Because the diameter of the upper mounting hole 101 is larger than the diameter of the paper scrap passage hole 103, a larger space is formed between the guide slope 201 and the paper scrap passage hole 103. This causes the paper scrap column to shake more violently due to centrifugal force in this space, making it easier for the paper scrap column to be broken up and smoothly ejected from the paper scrap discharge hole 104.
[0025] Meanwhile, the cylindrical design of the anti-jamming block 2 allows it to be tightly installed in the upper mounting hole 101, and the identical diameter of both ensures installation stability. When the equipment is running, the anti-jamming block 2 rotates along with the overall structure. Under centrifugal force, the paper scrap column violently shakes within the large space between the guide ramp 201 and the paper scrap passage hole 103. This shaking alters the interaction force between the paper scraps, making it easier to separate the previously clustered scraps. Furthermore, the larger space provides ample room for the paper scraps to move, allowing them to move more effectively towards the paper scrap discharge hole 104 under centrifugal force. As the equipment continues to operate, more and more dispersed paper scraps are smoothly ejected from the paper scrap discharge hole 104, ensuring the efficiency and smoothness of the entire paper scrap handling process, reducing paper scrap blockage, improving the equipment's working efficiency and stability, and better meeting the needs of rapid and effective paper scrap discharge in actual use scenarios.
[0026] In some embodiments, please refer to Figure 3The paper scrap through hole 103 is located within the horizontal projection range of the guide slope 201. In this embodiment, the guide slope 201 covers the entire bottom surface of the anti-jamming block 2, so the outer contour of the horizontal projection of the guide slope 201 is the same as the outer contour of the anti-jamming block 2. The paper scrap through hole 103 is coaxially arranged with the upper mounting hole 101, so the paper scrap through hole 103 is located within the horizontal projection range of the guide slope 201. When the paper scrap column passes through the paper scrap through hole 103, the side of the paper scrap column away from the paper scrap discharge hole 104 will first contact the guide slope 201. Under the action of lateral force, the paper scrap column will tilt towards the side closer to the paper scrap discharge hole 104, and at the same time, under the action of centrifugal force, it will be thrown out from the paper scrap discharge hole 104.
[0027] As the paper scrap column tilts towards the side closer to the paper scrap discharge hole 104, its contact area with the guide slope 201 gradually decreases, causing the direction of the resultant force of the lateral force and centrifugal force to continuously change. With the continuous ejection of the paper scrap column, a relatively stable airflow field is formed around the paper scrap discharge hole 104. This airflow field affects subsequent paper scrap columns passing through the paper scrap passage hole 103, allowing them to be more smoothly subjected to the lateral and centrifugal forces when entering the horizontal projection range of the guide slope 201, thus ejecting them more efficiently from the paper scrap discharge hole 104. Furthermore, as paper scraps are continuously ejected, the amount of paper scraps accumulating around the anti-jamming block 2 gradually decreases, reducing the probability of paper jams. Simultaneously, this design of the guide slope 201 also provides a preliminary sorting effect on the paper scrap column, allowing more paper scraps to approach the paper scrap discharge hole 104 in a more orderly manner, further improving the efficiency and stability of paper scrap ejection.
[0028] In some embodiments, please refer to Figure 1 , Figure 3 and Figure 4 The paper scrap discharge hole 104 includes an upper waist-shaped hole 105 and a lower waist-shaped hole 106 that are interconnected. The upper waist-shaped hole 105 and the lower waist-shaped hole 106 correspond to the upper mounting hole 101 and the paper scrap passage hole 103, respectively, and both the upper waist-shaped hole 105 and the lower waist-shaped hole 106 are arranged along the axial direction of the drill sleeve body 1. In this embodiment, the paper scrap discharge hole 104 is composed of the upper waist-shaped hole 105 and the lower waist-shaped hole 106. The upper waist-shaped hole 105 and the lower waist-shaped hole 106 are both arranged in the vertical direction (axial direction of the drill sleeve body 1) and are interconnected. The upper waist-shaped hole 105 is connected to the upper mounting hole 101, and the lower waist-shaped hole 106 is connected to the paper scrap through hole 103. Therefore, the lower waist-shaped hole 106 is located below the guide slope 201 in the vertical direction, which facilitates the loose paper scrap column to be thrown out directly through the lower waist-shaped hole 106 under the action of centrifugal force. Only when the paper scrap column cannot be thrown out by centrifugal force alone will it continue to move upward and tilt under the action of the guide slope 201, and finally be thrown out from the upper waist-shaped hole 105.
[0029] In some embodiments, please refer to Figure 1 and Figure 3 The vertical projection of the guide slope 201 is located within the range of the upper waist-shaped hole 105. In this embodiment, since the vertical projection of the guide slope 201 is located within the range of the upper waist-shaped hole 105, the outer contour of the upper waist-shaped hole 105 is larger than the outer contour of the vertical projection of the guide slope 201. Therefore, there is no obstruction on the path of the paper scrap column after passing through the guide slope 201, avoiding paper scraps from getting stuck at the upper waist-shaped hole 105.
[0030] To ensure that the guide ramp 201 can guide the paper scraps out more smoothly, the surface of the guide ramp 201 is treated with a smoothing process to reduce the friction between the paper scraps and the ramp, so that the paper scraps can be thrown out at a faster speed and with a more stable trajectory.
[0031] In some embodiments, please refer to Figure 1 and Figure 3 The outer edge of the lower waist-shaped hole 106 is provided with a chamfer 107. In this embodiment, the outer edge of the lower waist-shaped hole 106 is provided with a chamfer 107, and the chamfer 107 is a C-shaped chamfer 107. The C-shaped chamfer 107 can increase the opening size of the lower waist-shaped hole 106, so that the paper scraps can be thrown out more smoothly and avoid the paper scraps from getting stuck at the lower waist-shaped hole 106.
[0032] Meanwhile, to further improve the efficiency of paper scrap ejection, the inner wall of the lower-waisted hole 106 is also smoothed. The smooth inner wall reduces friction between the paper scrap and the hole wall, making the paper scrap ejection smoother. Moreover, this smoothing treatment prevents paper scrap from remaining on the hole wall, further reducing the risk of paper blockage.
[0033] In some embodiments, please refer to Figure 1 , Figure 3 and Figure 4 The width of the upper oblong hole 105 is greater than or equal to the diameter of the upper mounting hole 101, and the width of the lower oblong hole 106 is greater than or equal to the diameter of the paper scrap passage hole 103. In this embodiment, because the width of the upper oblong hole 105 is greater than or equal to the diameter of the upper mounting hole 101, the paper scrap column is thrown outward through the guide ramp 201 without obstruction; because the width of the lower oblong hole 106 is greater than or equal to the diameter of the paper scrap passage hole 103, the loose paper scraps are thrown outward through the unobstructed path under the action of centrifugal force. In actual operation, both the paper scrap column and the loose paper scraps can be thrown out of the equipment efficiently and smoothly, greatly improving the efficiency of the equipment in handling paper scraps, reducing equipment failures that may be caused by poor paper scrap discharge, and ensuring that the equipment can operate continuously and stably.
[0034] In some embodiments, please refer to Figure 2 and Figure 3 The drill bushing body 1 has an upper set screw hole 108 on its outer side wall for installing a set screw. The drill bushing body 1 is fixedly connected to the anti-jamming block 2 via the set screw. In this embodiment, the upper set screw hole 108 is located on the outer side wall of the drill bushing body 1, is radially arranged along the drill bushing body 1, and communicates with the upper mounting hole 101. A set screw is installed in the upper set screw hole 108. By tightening the set screw, the set screw abuts against the outer side wall of the anti-jamming block 2, thereby achieving a fixed connection between the anti-jamming block 2 and the drill bushing body 1. It should be noted that the anti-jamming block 2 and the output shaft of the drilling motor 4 can be either separate or integrated. The output shaft of the drilling motor 4 is fixedly installed in the upper mounting hole 101, so the drilling motor 4 can drive the drill bit 3 to rotate via the drill bushing body 1. The drill bushing body 1 is also provided with a lower set screw hole 109. The lower set screw hole 109 is arranged radially along the drill bushing body 1 and communicates with the lower mounting hole 102. A set screw is installed in the lower set screw hole 109. The drill bushing body 1 fixes the drill bit 3 in the lower mounting hole 102 through the set screw.
[0035] Furthermore, the anti-jamming block 2 is designed to fit the outer circumference of the output shaft of the drilling motor 4. When the anti-jamming block 2 and the output shaft of the drilling motor 4 are separate structures, they can be better installed on the drill bushing body 1, and the connection is ensured to be stable after being fixed by the set screw. Moreover, in order to ensure the installation accuracy of the drill bit 3, the set screw in the lower set screw hole 109 can accurately position the drill bit 3 in the lower mounting hole 102 when tightened, preventing the drill bit 3 from shaking or shifting during operation. At the same time, the drill bushing body 1 is made of high-strength wear-resistant material to adapt to long-term drilling work, reduce wear, and extend service life. After the drill bushing body 1 and the anti-jamming block 2 are fixedly connected, they form a tight fit, which can effectively prevent jamming during drilling and improve the smoothness of drilling. In addition, the inner walls of the upper set screw hole 108 and the lower set screw hole 109 are smoothed, which makes the installation of the set screw smoother and reduces the frictional wear between the set screw and the hole wall.
[0036] This application also provides a punching device, including any of the above-mentioned anti-jamming drill sleeves for binding machines.
[0037] Compared with the prior art, the punching device provided in this application uses a binding machine anti-jamming drill sleeve. The upper and lower ends of the drill sleeve body 1 are respectively opened with an upper mounting hole 101 and a lower mounting hole 102. The upper mounting hole 101 and the lower mounting hole 102 are connected by a paper scrap passage hole 103. An anti-jamming block 2 is installed in the upper mounting hole 101. The lower end of the anti-jamming block 2 is provided with a guide slope 201. A paper scrap discharge hole 104 is opened on the outer side wall of the drill sleeve body 1. The paper scrap discharge hole 104 penetrates the side wall of the drill sleeve body 1 and is directly opposite the guide slope 201. The drill bit 3 is installed in the lower mounting hole 102. As the drill bit 3 rotates and moves downward, paper scraps gradually form inside the inner hole of the drill bit 3 and then enter the paper scrap passage hole 103. Under normal conditions, the paper scraps will be directly thrown out from the paper scrap discharge hole 104 under the action of centrifugal force. If the paper scraps are not thrown out in the paper scrap passage hole 103, they will continue to move upward and press against the guide slope 201 of the anti-jamming block 2. Due to the lateral force, the paper scraps will tilt to one side of the paper scrap discharge hole 104 and eventually be thrown out, thus avoiding the phenomenon of paper scraps getting stuck in the drill sleeve. Since it is not necessary to stop the machine to remove the paper scraps in the drill bit 3 and the drill sleeve, the drilling efficiency and stability are greatly improved.
[0038] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A drill-resistant sleeve for a binding machine, characterized in that, include: The drill bushing body and the anti-jamming block are provided at the upper and lower ends of the drill bushing body, respectively. The upper and lower mounting holes are connected by a paper scrap through hole. An anti-jamming block is installed in the upper mounting hole. The lower end of the anti-jamming block is provided with a guide slope. A paper scrap discharge hole is opened on the outer side wall of the drill bushing body. The paper scrap discharge hole is directly opposite the guide slope. The lower mounting hole is used to install the drill bit.
2. The anti-jamming sleeve for a binding machine as described in claim 1, characterized in that, The diameter of the hole through which the paper scraps pass is larger than the inner diameter of the drill bit.
3. The anti-jamming drill sleeve for a binding machine as described in claim 1, characterized in that, The diameter of the mounting hole is larger than the diameter of the hole through which the paper scraps pass.
4. The anti-jamming sleeve for a binding machine as described in claim 3, characterized in that, The paper scraps pass through the hole and are located within the horizontal projection range of the guide slope.
5. The anti-jamming drill sleeve for a binding machine as described in claim 1, characterized in that, The paper scrap discharge hole includes an upper waist-shaped hole and a lower waist-shaped hole that are interconnected. The upper waist-shaped hole and the lower waist-shaped hole correspond to the upper mounting hole and the paper scrap passage hole, respectively, and the upper waist-shaped hole and the lower waist-shaped hole are both arranged along the axial direction of the drill sleeve body.
6. The anti-jamming drill sleeve for a binding machine as described in claim 5, characterized in that, The vertical projection of the guide slope lies within the range of the upper waist-shaped hole.
7. The anti-jamming drill sleeve for a binding machine as described in claim 5, characterized in that, The outer edge of the lower waist-shaped hole is chamfered.
8. The anti-jamming drill sleeve for a binding machine as described in claim 5, characterized in that, The width of the upper waist-shaped hole is greater than or equal to the diameter of the upper mounting hole, and the width of the lower waist-shaped hole is greater than or equal to the diameter of the paper scrap passage hole.
9. The anti-jamming sleeve for a binding machine as described in claim 1, characterized in that, The outer side wall of the drill bushing body is provided with an upper set screw hole for installing a set screw, and the drill bushing body is fixedly connected to the anti-jamming block through the set screw.
10. A punching device, characterized in that, Including the anti-jamming drill sleeve for a binding machine as described in any one of claims 1-9.