Disc bottle unscrambling device

Abstract

The utility model relates to a disc bottle unscrambling device which comprises a bottle unscrambling mechanism, the bottle unscrambling mechanism comprises a guardrail and an adjusting fence, the guardrail is provided with an opening, the bottle unscrambling mechanism is used for moving dispersedly arranged bottle bodies in the circumferential direction of the bottle unscrambling mechanism in a sequencing mode, the adjusting fence is movably connected with the guardrail and located at the opening, and the adjusting fence and the guardrail form an outlet in one side of the opening. Bottle bodies on the bottle arranging mechanism move towards the outlet, and the adjusting fence can move relative to the guardrail so as to adjust the width of the outlet. The design of the adjusting bar allows an operator to quickly adjust the width of an outlet according to the sizes of bottles in different batches, so that the flow direction of the bottle bodies is accurately controlled, the bottle bodies are ensured to pass through in a single sequence, blockage and damage to the bottle bodies are prevented, and efficient operation of a production line is maintained. And due to the adjustability of the adjusting fence, frequent shutdown or part replacement caused by different sizes of the equipment is avoided, and the equipment adaptability and the production efficiency are remarkably improved.

Description

Technical Field

[0001] The present application relates to the technical field of bottle unscrambling devices, and in particular to a disc bottle unscrambling device. Background Art

[0002] The bottle unscrambling machine is a key component specially designed for automated production lines. It is designed to neatly arrange scattered cans or bottles, including cylindrical cosmetic bottles, to meet the strict requirements of production lines for high efficiency and accuracy. By effectively sorting and orienting the disordered bottles, the machine ensures that the bottles are placed on the conveyor belt in the proper order and direction, thus providing a high-speed and efficient bottle conveying solution for the next process, such as filling, labeling or boxing.

[0003] Existing standard disc bottle unscrambling equipment is mainly designed to process bottles of the same size in a single batch. These devices perform well in sorting and orienting disordered bottles of the same bottle size, so that the bottles are arranged on the conveyor belt in a specific order and direction for further processing. However, in production practice, the bottle sizes of different batches of bottles are often different, and existing equipment is usually unable to flexibly adapt to such size changes, which requires the equipment to be shut down for adjustment or replacement of equipment parts, which not only affects production efficiency but also increases operating costs.

[0004] In view of the limitations of existing disc bottle unscrambling equipment in handling changes in bottle sizes from different batches, there is an urgent need to develop a new disc bottle unscrambling device that can adapt to these changes, aiming to provide higher adaptability so as to quickly adjust to different batches of bottle sizes without frequent shutdowns or replacement of equipment parts. Utility Model Content

[0005] The purpose of the present application is to overcome the deficiencies in the prior art and to propose a disc bottle sorting device for processing different batches of bottle sizes to prevent more than two of the same bottles from passing through the outlet at the same time, and to allow only one bottle to pass through in sequence.

[0006] This application is implemented through the following technical solutions:

[0007] The present application proposes a disc bottle unscrambling device, comprising a bottle unscrambling mechanism, wherein the bottle unscrambling mechanism comprises a guardrail and an adjustment fence, wherein the guardrail has an opening, and the bottle unscrambling mechanism is used to move the bottles arranged in a dispersed manner along the circumferential direction of the bottle unscrambling mechanism in an ordered manner, and the adjustment fence is movably connected to the guardrail and is located at the opening, and the adjustment fence and the guardrail form an outlet on one side of the opening, and the bottles on the bottle unscrambling mechanism move toward the outlet, and the adjustment fence can move relative to the guardrail to adjust the width of the outlet.

[0008] In one embodiment of the present application, the guardrail includes a first guardrail, the first guardrail is provided with a first side portion and a second side portion, the opening is formed between the first side portion and the second side portion, and the adjustment fence and the first side portion form an exit.

[0009] In one embodiment of the present application, the first side portion is provided with a connecting plate at the opening, the connecting plate is provided with a card slot, the adjustment bar is provided with a card plate, and the card plate can be extended into the card slot to adjust the width of the outlet.

[0010] In one embodiment of the present application, the guardrail also includes a second guardrail, one end of which is movably connected to the second side portion, and the other end faces the adjustment rail, and the second guardrail can be moved closer to or away from the adjustment rail to adjust the distance between the second guardrail and the adjustment rail.

[0011] In one embodiment of the present application, the bottle unscrambling mechanism further includes:

[0012] A tray body is provided to drive the bottle body on the top surface of the tray body to rotate along the circumference of the tray body, and the first guardrail surrounds the tray body and has a gap with the tray body;

[0013] The arc-shaped baffle is located on the top surface of the disk body, and the arc-shaped baffle drives the bottle body to move radially along the disk body, so as to move the bottle body along the disk body to the first guardrail and contact the first guardrail, and then move to the first side portion and be sent out from the outlet.

[0014] In one embodiment of the present application, one end of the adjustment bar extends into the top surface of the disk body and has a gap with the top surface, and the other end extends out of the disk body through the outlet.

[0015] In one embodiment of the present application, the first guardrail is provided with an entrance, and the bottle body enters the top surface of the tray body through the entrance and leaves the top surface of the tray body through the exit.

[0016] In one embodiment of the present application, the disc bottle unscrambling device also includes a base, which is placed on the ground. The bottle unscrambling mechanism includes a driving member, which is fixed on the base. The rotating shaft of the driving member is inserted into the central axis position of the disc body. The driving member can drive the disc body to rotate, so as to drive the bottle body on the top end surface of the disc body to rotate along the circumference of the disc body.

[0017] In one embodiment of the present application, the bottle unscrambling mechanism further includes:

[0018] A plurality of first fixing members, each of which is fixedly connected to the top surface of the base and the first guardrail respectively;

[0019] A plate is arranged at the entrance of the first guardrail and close to the tray, and both ends of the first guardrail extend toward the edge of the plate. The bottle is transported to the top surface of the tray through the plate.

[0020] In one embodiment of the present application, the bottle unscrambling mechanism further includes:

[0021] Two second fixing members are both fixedly connected to the top surface of the base;

[0022] A first fixing rod, both ends of which are respectively fixedly connected to one of the second fixing members;

[0023] A second fixing rod, fixedly connected to the first fixing rod through a fixing structure;

[0024] The surface of the second fixing rod is fixedly connected to the arc-shaped baffle plate so that the arc-shaped baffle plate is located on the top end surface of the disk body and has a gap with the top end surface.

[0025] Compared with the prior art, the beneficial effects of this application are:

[0026] The bottle unscrambling mechanism is used to move the scattered bottles in the circumferential order of the bottle unscrambling mechanism and finally move them toward the outlet. The adjustment bar is movably connected to the guardrail and is located at the opening. The adjustment bar and the guardrail form an outlet on one side of the opening. The adjustment bar can move relative to the guardrail. The adjustment bar allows the operator to quickly adjust the outlet width according to the size of different batches of bottles, and realizes precise control of the flow direction of the bottles to ensure that the bottles pass through in a single order, prevent blockage and bottle damage, and maintain efficient operation of the production line. The adjustability of the adjustment bar avoids frequent shutdown or replacement of parts due to different sizes of equipment, significantly improving the adaptability and production efficiency of the equipment.

[0027] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A three-dimensional diagram of a disc bottle unscrambling device provided in one embodiment of the present application;

[0030] Figure 2 A three-dimensional diagram of a disc bottle unscrambling device provided in one embodiment of the present application;

[0031] Figure 3 A three-dimensional diagram of a disc bottle unscrambling device provided in one embodiment of the present application (excluding the adjustment bar);

[0032] Figure 4 A three-dimensional diagram of an adjustment bar provided in one embodiment of the present application.

[0033] Description of reference numerals:

[0034] 10. Disc bottle unscrambling device; 100. Bottle unscrambling mechanism; 110. Guardrail; 111. Opening; 112. First guardrail; 1121. First side portion; 1122. Second side portion; 1123. Connecting plate; 1124. Slot; 1125. Positioning slot; 113. Second guardrail; 1131. Positioning plate; 114. Inlet; 120. Adjustment bar; 121. Card; 1211. Raised strip; 130. Disc body; 140. Arc baffle; 150. Outlet; 160. Plate; 171. First fixing member; 181. Second fixing member; 182. First fixing rod; 183. Second fixing rod; 184. Fixing structure; 200. Base; 300. Bottle body. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of this application.

[0037] It should be noted that when an element is referred to as being "fixed on" or "set on" another component, it can be directly on the other component or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0038] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0040] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0041] Please refer to Figures 1 to 4 The present application proposes a disc bottle unscrambling device 10, comprising a bottle unscrambling mechanism 100, wherein the bottle unscrambling mechanism 100 comprises a guardrail 110, wherein the guardrail 110 has an opening 111, and the bottle unscrambling mechanism 100 is used to move the bottles 300 arranged in a dispersed manner along the circumferential direction of the bottle unscrambling mechanism 100 in an ordered manner, and the bottle unscrambling mechanism 100 further comprises an adjustment fence 120, which is movably connected to the guardrail 110 and is located at the opening 111, and the adjustment fence 120 and the guardrail 110 form an outlet 150 on one side of the opening 111, and the bottles 300 on the bottle unscrambling mechanism 100 move toward the outlet 150, and the adjustment fence 120 can move relative to the guardrail 110 to adjust the width of the outlet 150.

[0042] Specifically, the bottle unscrambling mechanism 100 is used to move the bottles 300 arranged in a dispersed manner along the circumferential direction of the bottle unscrambling mechanism 100, and finally move them toward the outlet 150. The adjustment bar 120 is movably connected to the guardrail 110 and is located at the opening 111. The adjustment bar 120 and the guardrail 110 form an outlet 150 on one side of the opening 111. The adjustment bar 120 can move relative to the guardrail 110. In this way, the design of the adjustment bar 120 allows the operator to quickly adjust the width of the outlet 150 according to the size of different batches of bottles, thereby achieving precise control of the flow direction of the bottles 300. For example, when processing bottles with a diameter of 5 cm, the operator can adjust the width of the outlet 150 to be slightly larger than 5 cm, ensuring that the bottles 300 can pass through the outlet 150 in a single order, preventing blockage and bottle damage, while maintaining efficient operation of the production line. The design of the adjustment bar 120 allows the equipment to adapt to different batches of bottles without stopping or replacing parts, thereby improving production efficiency and avoiding production delays caused by equipment downtime. It reduces the production interruption time caused by replacing or adjusting equipment and maintains the continuous operation of the production line.

[0043] In one embodiment, the guardrail 110 includes a first guardrail 112 , the first guardrail 112 has a first side portion 1121 and a second side portion 1122 , an opening 111 is formed between the first side portion 1121 and the second side portion 1122 , and the adjustment fence 120 and the first side portion 1121 form an outlet 150 .

[0044] Specifically, the adjustment bar 120 and the first side portion 1121 form an outlet 150. By moving the adjustment bar 120 relative to the guardrail 110, the operator is allowed to flexibly adjust the width of the outlet 150 according to the sizes of bottles in different batches, ensuring that the bottles can pass through sequentially and individually, reducing the risk of blockage and damage.

[0045] In one embodiment, the first side portion 1121 is provided with a connecting plate 1123 at the opening 111, and the connecting plate 1123 is provided with a slot 1124, and the slot 1124 is provided on the side of the connecting plate 1123 away from the outlet 150. The adjustment bar 120 is provided with a card plate 121, and the card plate 121 can be extended into the slot 1124 to adjust the width of the outlet 150.

[0046] Specifically, the card plate 121 can be extended into the card slot 1124. Through the interaction between the card plate 121 and the card slot 1124, the operator can accurately adjust the width of the outlet 150 to ensure that the bottles pass through in a single order, and avoid being too wide to cause multiple bottles to pass through at the same time or too narrow to cause blockage. The end surface of the card plate 121 is provided with a plurality of convex strips 1211 arranged at equal intervals, and the connecting plate 1123 is provided with a plurality of grooves arranged at equal intervals in the card slot 1124. The convex strips 1211 can be clamped in the grooves to position and adjust the distance between the bar 120 and the first side portion 1121.

[0047] In one embodiment, the guardrail 110 also includes a second guardrail 113, one end of which is movably connected to the second side portion 1122, and the other end faces the adjustment fence 120. The second guardrail 113 can be close to or away from the adjustment fence 120 to adjust the distance between the second guardrail 113 and the adjustment fence 120.

[0048] Specifically, a positioning groove 1125 is provided at the second side portion 1122 of the first guardrail 112, and the positioning groove 1125 is arranged on the side of the second side portion 1122 away from the arc-shaped baffle 140. The second guardrail 113 has a positioning plate 1131, and the positioning plate 1131 extends into the positioning groove 1125 and is adjusted specifically with the second side portion 1122. In this way, the second guardrail 113 can be close to or away from the adjustment bar 120, and the distance between the second guardrail 113 and the adjustment bar 120 can be adjusted to prevent the second guardrail 113 from blocking the adjustment bar 120 from expanding the width of the outlet 150. The distance between the second guardrail 113 and the adjustment bar 120 can also be artificially reduced to prevent the bottle body 300 from falling between the second guardrail 113 and the adjustment bar 120.

[0049] In one embodiment, the bottle unscrambling mechanism 100 further includes a tray 130 and an arc-shaped baffle 140. The tray 130 drives the bottle 300 on the top surface of the tray 130 to rotate along the circumference of the tray 130. The first guardrail 112 surrounds the tray 130 and has a gap with the tray 130. The arc-shaped baffle 140 is located on the top surface of the tray 130. The arc-shaped baffle 140 drives the bottle 300 to move along the radial direction of the tray 130, so as to move the bottle 300 along the tray 130 to the first guardrail 112 and contact the first guardrail 112, and then move to the first side portion 1121 and send it out from the outlet 150.

[0050] Specifically, there is a gap between the first guardrail 112 and the tray 130 to prevent the first guardrail 112 from blocking the rotation of the tray 130. The tray 130 and the arc-shaped baffle plate jointly move the disordered bottles in an orderly circumferential order. When a number of disordered bottles 300 are on the top surface of the tray 130, the tray 130 drives the bottles 300 to rotate in the circumferential direction of the tray 130, and the arc-shaped baffle plate 140 drives the bottles 300 to move in the radial direction of the tray 130. Guided by the arc-shaped baffle plate 140, the bottles 300 are orderly moved to the outlet 150 in the radial direction of the tray 130, ensuring that the bottles 300 can flow efficiently along the predetermined path.

[0051] In one embodiment, one end of the adjustment bar 120 extends into the top surface of the disk body 130 and has a gap therebetween, and the other end extends out of the disk body 130 through the outlet 150 .

[0052] Specifically, the adjustment bar 120 extends into one end of the tray 130, and the side surface thereof and the first side portion 1121 of the first guardrail 112 are the passages leading to the outlet 150. The position and length design of the adjustment bar 120 enables it to accurately control the flow of the bottles 300 from the tray 130 to the outlet 150, ensuring that the bottles 300 pass through in a single order as required. There is a gap between the adjustment bar 120 and the top surface of the tray 130 to prevent the adjustment bar 120 from blocking the rotation of the tray 130. Since the adjustment bar 120 effectively manages the flow of the bottles 300 at the outlet 150, blockages and unexpected downtime can be reduced, thereby improving the overall operating efficiency of the production line.

[0053] In one embodiment, the first guardrail 112 is provided with an inlet 114 , and the bottle 300 enters the top surface of the tray 130 through the inlet 114 and leaves the top surface of the tray 130 through the outlet 150 .

[0054] Specifically, the bottles that are randomly arranged enter the top surface of the tray 130 from the inlet 114 and then leave the top surface of the tray 130 through the outlet 150 .

[0055] In one embodiment, the disc bottle unscrambling device 10 further includes a base 200, which is placed on the ground. The bottle unscrambling mechanism 100 includes a driving member, which is fixed on the base 200. The rotating shaft of the driving member is inserted into the central axis position of the disc body 130. The driving member can drive the disc body 130 to rotate, so as to drive the bottle body 300 on the top surface of the disc body 130 to rotate along the circumferential direction of the disc body 130.

[0056] Specifically, the driving member is a high-power motor device. By fixing the driving member on the base 200 and directly connecting it to the central axis of the disk body 130, direct and stable transmission of the driving force is ensured, thereby improving the operating efficiency and reliability of the entire device. The design of the base 200 not only provides stable support, but also makes the layout of the entire device more reasonable, which is conducive to maintenance and overhaul.

[0057] In one embodiment, the bottle unscrambling mechanism 100 further includes a plurality of first fixing members 171 and a plate member 160, wherein the plurality of first fixing members 171 are respectively fixedly connected to the top surface of the base 200 and the first guardrail 112; the plate member 160 is disposed at the entrance 114 of the first guardrail 112 and is close to the tray body 130, and both ends of the first guardrail 112 extend toward the edge of the plate member 160, and the bottle body 300 is transported to the top surface of the tray body 130 through the plate member 160.

[0058] The plurality of first fixing members 171 are fixedly connected to the top surface of the base 200 and the first guardrail 112 respectively. The connection between the first guardrail 112 and the base 200 enhances the structural stability of the entire device and ensures that the guardrail 110 is fixed in position during the processing of the bottle 300. The arrangement of the plate 160 enables the bottle 300 to be transported to the top surface of the tray 130 through the outlet 150.

[0059] In one embodiment, the bottle unscrambling mechanism 100 further includes two second fixing members 181, a first fixing rod 182 and a second fixing rod 183, the two second fixing members 181 are both fixedly connected to the top surface of the base 200; both ends of the first fixing rod 182 are respectively fixedly connected to a second fixing member 181; the second fixing rod 183 is fixedly connected to the first fixing rod 182 via a fixing structure 184; the surface of the second fixing rod 183 is fixedly connected to the arc baffle 140, so that the arc baffle 140 is located on the top surface of the disk body 130 and has a gap with the top surface.

[0060] Specifically, the two second fixing members 181 are fixedly connected to the top surface of the base 200. The two ends of a first fixing rod 182 are respectively connected to the two second fixing members 181 to form a stable support structure. Further, a second fixing rod 183 is connected to the first fixing rod 182 through a fixing structure 184, and the surface of the second fixing rod 183 is fixedly connected to the arc baffle 140. The arc baffle 140 is precisely located on the top surface of the disk body 130 and maintains an appropriate gap with the top surface of the disk body 130, so that the bottle body 300 can smoothly move along the radial direction of the disk body 130.

[0061] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A disc bottle unscrambling device, comprising a bottle unscrambling mechanism, wherein the bottle unscrambling mechanism comprises a guardrail, wherein the guardrail has an opening, and wherein the bottle unscrambling mechanism is used to move the bottles arranged in a dispersed manner in a circumferential direction of the bottle unscrambling mechanism, wherein: The bottle unscrambling mechanism also includes: An adjustment fence is movably connected to the guardrail and is located at the opening. The adjustment fence and the guardrail form an outlet on one side of the opening. The bottle body on the bottle unscrambling mechanism moves toward the outlet. The adjustment fence can move relative to the guardrail to adjust the width of the outlet.

2. The disc bottle unscrambling device according to claim 1, characterized in that: The guardrail comprises a first guardrail, the first guardrail is provided with a first side portion and a second side portion, the opening is formed between the first side portion and the second side portion, and the adjustment fence and the first side portion form an exit.

3. The disc bottle unscrambling device according to claim 2, characterized in that: The first side portion is provided with a connecting plate at the opening, the connecting plate is provided with a card slot, the adjustment bar is provided with a card plate, and the card plate can be extended into the card slot to adjust the width of the outlet.

4. The disc bottle unscrambling device according to claim 2, characterized in that: The guardrail also includes a second guardrail, one end of which is movably connected to the second side portion, and the other end faces the adjustment rail. The second guardrail can be moved closer to or farther away from the adjustment rail to adjust the distance between the second guardrail and the adjustment rail.

5. The disc bottle unscrambling device according to claim 2, characterized in that: The bottle unscrambling mechanism also includes: A tray body is provided to drive the bottle body on the top surface of the tray body to rotate along the circumference of the tray body, and the first guardrail surrounds the tray body and has a gap with the tray body; The arc-shaped baffle is located on the top surface of the disk body, and the arc-shaped baffle drives the bottle body to move radially along the disk body, so as to move the bottle body along the disk body to the first guardrail and contact the first guardrail, and then move to the first side portion and be sent out from the outlet.

6. The disc bottle unscrambling device according to claim 5, characterized in that: One end of the regulating fence extends into the top end surface of the disk body and has a gap therebetween, and the other end extends out of the disk body through the outlet.

7. The disc bottle unscrambling device according to claim 5, characterized in that: The first guardrail is provided with an entrance, through which the bottle enters the top surface of the tray and leaves the top surface of the tray through the exit.

8. The disc bottle unscrambling device according to claim 6, characterized in that: The disc bottle unscrambling device also includes a base, which is placed on the ground. The bottle unscrambling mechanism includes a driving member, which is fixed on the base. The rotating shaft of the driving member is inserted into the central axis position of the disc body. The driving member can drive the disc body to rotate, so as to drive the bottle body on the top end surface of the disc body to rotate along the circumference of the disc body.

9. The disc bottle unscrambling device according to claim 8, characterized in that: The bottle unscrambling mechanism also includes: A plurality of first fixing members, each of which is fixedly connected to the top surface of the base and the first guardrail respectively; A plate is arranged at the entrance of the first guardrail and close to the tray, and both ends of the first guardrail extend toward the edge of the plate. The bottle is transported to the top surface of the tray through the plate.

10. The disc bottle unscrambling device according to claim 8, characterized in that: The bottle unscrambling mechanism also includes: Two second fixing members are both fixedly connected to the top surface of the base; A first fixing rod, both ends of which are respectively fixedly connected to one of the second fixing members; A second fixing rod, fixedly connected to the first fixing rod through a fixing structure; The surface of the second fixing rod is fixedly connected to the arc-shaped baffle plate so that the arc-shaped baffle plate is located on the top end surface of the disk body and has a gap with the top end surface.

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