End tooth machining waste recovery device

Abstract

The utility model discloses an end tooth machining waste recovery device which comprises a workbench and a box body arranged on the lower surface of the workbench and communicated with the workbench, a smashing mechanism, a filtering mechanism and a collecting mechanism are arranged in the box body from top to bottom, and a circulating mechanism is arranged on the side face of the box body. The filtering mechanism can automatically incline so that waste on the upper surface of the filtering mechanism can slide into the circulating mechanism, the circulating mechanism is used for conveying the entering waste into the smashing mechanism, and when the device is used, the defect that in the prior art, in the waste recycling process, especially for large or hard waste, the expected effect can not be achieved through single-time smashing is overcome; the problems that a large number of particles which are not fully crushed are still contained in the waste materials, the waste materials which are not fully crushed still occupy a large amount of storage space, meanwhile, the non-crushed large materials are prone to being accumulated in a crushing barrel in the crushing process, the barrel is blocked, and the crushing efficiency is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste collection, and specifically, to a waste recycling device for end tooth processing. Background Art

[0002] The method of end tooth processing is generally the forming method, that is, the method of using a forming milling cutter that completely conforms to the shape of the cut tooth groove to cut out the tooth groove, such as milling teeth. The tooth groove of the end tooth disc is processed by moving a milling cutter on the end tooth surface to polish, and finally the corresponding tooth groove is formed. A large amount of waste will be generated during the process of polishing and forming the tooth groove, and the waste falling during the opening of the tooth groove has the value of being recycled. Therefore, as an indispensable part of the production line, the performance and efficiency of the waste recycling device are directly related to the control of production costs, the effective utilization of resources, and environmental protection.

[0003] After retrieval, Chinese patent application CN115743980 A discloses a waste recycling device for end tooth processing. By crushing large waste blocks, finally only small-sized waste falls into the storage box, making full use of the space of the storage box and reducing transportation costs.

[0004] However, when implementing the above technical solution, there are still the following technical problems: during the waste recycling process, especially for larger or harder waste, single crushing may not achieve the expected effect, resulting in a large amount of unbroken particles still remaining in the waste. These unbroken wastes still occupy a large amount of storage space. At the same time, these uncrushed large substances are prone to accumulate in the crushing cylinder during the crushing process, causing the cylinder to become blocked and affecting the crushing efficiency.

[0005] Therefore, it is an urgent problem to be solved by the utility model to provide a waste recycling device for end tooth processing that can perform cyclic crushing treatment on waste during use, ensure the full crushing of waste, reduce the volume and weight of waste, and reduce the subsequent transportation, storage, and treatment costs. Summary of the Utility Model

[0006] Aiming at the above technical problems, the purpose of the utility model is to overcome the problems in the prior art that during the waste recycling process, especially for larger or harder waste, single crushing may not achieve the expected effect, resulting in a large amount of unbroken particles still remaining in the waste. These unbroken wastes still occupy a large amount of storage space. At the same time, these uncrushed large substances are prone to accumulate in the crushing cylinder during the crushing process, causing the cylinder to become blocked and affecting the crushing efficiency. Thus, a waste recycling device for end tooth processing that can perform cyclic crushing treatment on waste during use, ensure the full crushing of waste, reduce the volume and weight of waste, and reduce the subsequent transportation, storage, and treatment costs is provided.

[0007] To achieve the above object, the present utility model provides a waste recycling device for end tooth machining. The waste recycling device includes: a workbench, a blanking port opened on the workbench, and a box body provided on the lower surface of the workbench and communicating with the blanking port. Inside the box body, a crushing mechanism, a filtering mechanism, and a collecting mechanism are respectively arranged from top to bottom. A circulating mechanism is provided on the side of the box body. The filtering mechanism can automatically tilt to slide the waste on its upper surface into the circulating mechanism. The circulating mechanism is used to transport the incoming waste into the crushing mechanism.

[0008] Preferably, the crushing mechanism includes: a crushing roller, a driving motor, and a transmission gear. A plurality of crushing rollers are rotatably arranged on the inner side wall of the box body. The driving motor is fixedly arranged on the side wall of the box body, and its output end is horizontally arranged and fixedly connected to one of the crushing rollers through a coupling. Transmission gears are respectively and fixedly sleeved on the rotating shafts of each crushing roller, and adjacent two transmission gears are meshed with each other.

[0009] Preferably, the filtering mechanism includes: a filter plate. One side of the filter plate is hinged to the inner side wall of the box body, and the opposite side is slidably matched with the inner side wall of the box body.

[0010] Preferably, a vibration assembly for driving the filter plate to vibrate up and down to prevent blockage is arranged inside the box body; wherein,

[0011] The vibration assembly includes: a rotating shaft, a transmission belt, a cam, a spring column, and a slider; wherein,

[0012] The rotating shaft is rotatably arranged on the side wall of the box body and is in transmission connection with the output end of the driving motor through the transmission belt. A plurality of cams are fixedly sleeved on the rotating shaft at intervals. The side surface of the cam contacts the upper surface of the filter plate. A plurality of spring columns are fixedly arranged at intervals on the side wall of the box body where it is slidably matched with the filter plate. The top ends of the plurality of spring columns are all fixedly connected to the slider. A sliding groove for each slider to slide is opened on the bottom surface of the filter plate.

[0013] Preferably, the circulating mechanism includes: a blanking member for driving the filter plate to tilt downward and a circulating member for circulating and transporting the waste that is not completely crushed on the filter plate into the crushing mechanism for re-crushing.

[0014] Preferably, the blanking member includes: an electric telescopic rod, a wedge-shaped push block, a wedge-shaped convex block, and a sliding rod; wherein,

[0015] The electric telescopic rod is fixedly arranged on the side wall of the box body. A sliding rod parallel to the electric telescopic rod is also fixedly arranged on the side wall of the box body. The output ends of the electric telescopic rod and the sliding rod are horizontally arranged and are both fixedly connected to the wedge-shaped push block. The wedge-shaped push block is used in cooperation with the wedge-shaped convex block, and the wedge-shaped convex block is fixedly arranged on the upper surface of the filter plate.

[0016] Preferably, the recycling member includes: a recycling box, a feeding pipe, a discharging pipe, a rotating motor, and a spiral blade; wherein,

[0017] The side wall of the recycling box near the bottom surface is communicated with the box body through an inclined feeding pipe. An inclined discharging pipe is connected to the side wall of the recycling box away from the feeding pipe. The discharging end of the discharging pipe is communicated with the box body through a blanking port. A rotating motor is fixedly provided at the top end of the recycling box. The output shaft of the rotating motor is vertically arranged and fixedly connected to the spiral blade through a coupling.

[0018] Preferably, the collecting mechanism includes: an aggregate box, the aggregate box is slidably arranged on the inner bottom wall of the box body, and a sealing door is hingedly arranged at the front opening of the box body.

[0019] According to the above technical solution, the beneficial effects of a waste recycling device for end tooth processing provided by the present utility model during use are as follows: During the end tooth processing, the generated waste naturally falls into the lower box body through a plurality of blanking ports on the workbench. After the waste enters the box body, it is initially crushed by the internal crushing mechanism. After being screened by the filtering mechanism, some waste cannot be completely crushed due to excessive size or material reasons, and can be re-guided back into the box body through the recycling mechanism for secondary crushing until a predetermined crushing effect is achieved. The waste that has been fully crushed falls into the lower collecting mechanism through the outlet of the box body for centralized storage or further processing. Through the recycling mechanism, the recycling and reprocessing of incompletely crushed waste are realized, ensuring the full crushing of waste, reducing the volume and weight of waste, and reducing the costs of subsequent transportation, storage, and processing.

[0020] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation part; moreover, the parts not involved in the present utility model are the same as the prior art or can be implemented by using the prior art. Description of the Drawings

[0021] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0022] Figure 1 is a schematic three-dimensional structure of a waste recycling device for end tooth processing provided in a preferred embodiment Figure 1 ;

[0023] Figure 2 is a schematic three-dimensional structure of a waste recycling device for end tooth processing provided in a preferred embodiment Figure 2 ;

[0024] Figure 3It is a schematic perspective sectional view of a waste recycling device for end tooth machining provided in a preferred embodiment;

[0025] Figure 4 It is a schematic perspective view of a crushing mechanism of a waste recycling device for end tooth machining provided in a preferred embodiment;

[0026] Figure 5 It is a plan view of a waste recycling device for end tooth machining provided in a preferred embodiment;

[0027] Figure 6 is Figure 5 a cross-sectional view taken along A-A in;

[0028] Figure 7 It is a schematic perspective view of a vibration assembly of a waste recycling device for end tooth machining provided in a preferred embodiment.

[0029] Description of reference numerals

[0030] 100, workbench; 101, blanking port; 200, collection mechanism; 201, aggregate box; 202, sealing door; 300, circulation mechanism; 301, circulation box; 302, feeding pipe; 303, discharging pipe; 304, rotating motor; 305, spiral blade; 306, electric telescopic rod; 307, wedge-shaped push block; 308, wedge-shaped convex block; 309, slide bar; 400, crushing mechanism; 401, driving motor; 402, crushing roller; 403, transmission gear; 404, box body; 500, filtering mechanism; 501, filter plate; 502, rotating shaft; 503, transmission belt; 504, cam; 505, spring column; 506, slider; 507, chute. Detailed implementation manners

[0031] The following details the specific implementation manners of the present invention with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for explaining and illustrating the present invention, and are not used to limit the present invention.

[0032] In the present invention, unless otherwise stated, the directional terms such as "upper, lower, inner, outer" included in the terms only represent the orientation of the terms in the normal use state, or the common names understood by those skilled in the art, and should not be regarded as a limitation to the terms.

[0033] Refer to Figures 1 - 7As shown in the figure, a waste recycling device for end tooth machining, a workbench 100, a blanking port 101 opened on the workbench 100, and a box body 404 arranged on the lower surface of the workbench 100 and communicated with the blanking port 101. Inside the box body 404, a crushing mechanism 400, a filtering mechanism 500, and a collecting mechanism 200 are respectively arranged from top to bottom. A circulating mechanism 300 is arranged on the side of the box body 404. The filtering mechanism 500 can automatically tilt to slide the waste on its upper surface into the circulating mechanism 300. The circulating mechanism 300 is used to transport the incoming waste into the crushing mechanism 400.

[0034] During the end tooth machining process, the generated waste naturally falls into the lower box body 404 through multiple blanking ports 101 on the workbench 100. After the waste enters the box body 404, it is preliminarily crushed by the internal crushing mechanism 400, and then screened by the filtering mechanism 500. Some waste cannot be completely crushed due to excessive size or material reasons. These wastes can be re-guided back into the box body 404 through the circulating mechanism 300 for re-crushing until the predetermined crushing effect is achieved. The fully crushed waste falls into the lower collecting mechanism 200 through the outlet of the box body 404 for centralized storage or further processing. Through the circulating mechanism 300, the recycling and reprocessing of incompletely crushed waste are realized, ensuring the full crushing of waste, reducing the volume and weight of waste, and lowering the costs of subsequent transportation, storage, and processing.

[0035] Refer to Figures 3 - 4 As shown in the figure, the crushing mechanism 400 includes: a crushing roller 402, a driving motor 401, and a transmission gear 403. A plurality of crushing rollers 402 are rotatably arranged on the inner side wall of the box body 404. The driving motor 401 is fixedly arranged on the side wall of the box body 404, and its output end is horizontally arranged and fixedly connected to one of the crushing rollers 402 through a coupling. Transmission gears 403 are respectively and fixedly sleeved on the rotating shafts of each crushing roller 402, and adjacent two transmission gears 403 are meshed with each other.

[0036] During use, after the waste enters the box 404, the drive motor 401 in the pulverizing mechanism 400 is started, and the output end of the drive motor 401 is fixedly connected to one of the pulverizing rollers 402 through a shaft coupling, so the rotation of the drive motor 401 will drive the pulverizing roller 402 to start rotating. Since a transmission gear 403 is fixedly sleeved on the rotating shaft of each pulverizing roller 402, and these transmission gears 403 are meshed with each other, the rotation of the pulverizing roller 402 will drive the other pulverizing rollers 402 to start rotating in turn through the meshing action of the transmission gears 403. As all the pulverizing rollers 402 rotate, the shear force and extrusion force generated between them will pulverize the waste falling into the box 404. The multiple pulverizing rollers 402 are arranged for transmission through the transmission gears 403, so that the directions between each two groups of pulverizing rollers 402 are opposite, so that the waste can be fully and evenly pulverized.

[0037] Reference Figures 5 - 6 As shown, the filtering mechanism 500 includes: a filtering plate 501 , one side of which is hinged to the inner side wall of the box body 404 and the other side of which is opposite to the inner side wall of the box body 404 is slidably matched.

[0038] In the above scheme, the waste falls into the box 404 through the drop port 101 of the workbench 100, and is crushed by multiple crushing rollers 402. The crushed waste and fine particles continue to fall and pass through the filtering mechanism 500 located below the crushing rollers 402. The filter plate 501 in the filtering mechanism 500 screens the waste, allowing fine particles that meet the requirements to pass through, while larger waste that has not been completely crushed is intercepted above the filter plate 501.

[0039] Reference Figures 6 - 7 As shown, a vibration component for causing the driving rod filter plate 501 to vibrate up and down to prevent clogging is provided in the box body 404; wherein, the vibration component comprises: a rotating shaft 502, a transmission belt 503, a cam 504, a spring column 505 and a slider 506; wherein, the rotating shaft 502 is rotatably arranged on the side wall of the box body 404 and is transmission-connected to the output end of the driving motor 401 through the transmission belt 503, a plurality of cams 504 are fixedly sleeved at intervals on the rotating shaft 502, the side surface of the cam 504 contacts the upper surface of the filter plate 501, a plurality of spring columns 505 are fixedly arranged at intervals on one side of the side wall of the box body 404 that slides with the filter plate 501, the top ends of the plurality of spring columns 505 are fixedly connected to the slider 506, and a slide groove 507 for each slider 506 to slide is provided on the bottom surface of the filter plate 501.

[0040] In the above scheme, as the driving motor 401 runs and provides power to the rotating shaft 502 through the transmission belt 503, the rotating shaft 502 starts to rotate, and the multiple cams 504 fixedly mounted thereon also rotate accordingly. When the long side of the cam 504 contacts the upper surface of the filter plate 501, when the cam 504 moves the filter plate 501, the bottom surface of the filter plate 501 slides with the slider 506 through the slide groove 507 to make the filter plate 501 slide downward. When the short side of the cam 504 approaches the upper surface of the filter plate 501, the spring column 505 acts as an elastic element to provide a reset force for the filter plate 501, and the filter plate 501 can be quickly reset. Under the combined action of the periodic thrust of the cam 504 and the reset force of the spring column 505, the filter plate 501 vibrates up and down, thereby preventing waste from accumulating and clogging on the filter plate 501.

[0041] Reference Figures 3 - 7 As shown, the circulation mechanism 300 includes: a material discharge member for driving the filter plate 501 to tilt downward and a circulation member for circulating the incompletely crushed waste on the filter plate 501 into the crushing mechanism 400 for further crushing.

[0042] In the above scheme, when a certain amount of uncrushed waste accumulates on the filter plate 501, first, the unloading part starts to drive the filter plate 501 to tilt downward at a certain angle so that the waste is concentrated on one side. Then, the circulation part starts to collect the uncrushed waste concentrated on one side of the filter plate 501, and re-transport it to the entrance of the crushing mechanism 400 through the circulation part. The uncrushed waste enters the crushing mechanism 400 again for crushing. By recycling the uncrushed waste, the maximum utilization of the waste is achieved, and the resource utilization rate and economic benefits are improved.

[0043] Reference Figures 6 - 7 As shown, the unloading parts include: an electric telescopic rod 306, a wedge-shaped push block 307, a wedge-shaped protrusion 308 and a sliding rod 309; wherein, the electric telescopic rod 306 is fixedly arranged on the side wall of the box body 404, and the side wall of the box body 404 is also fixedly provided with a sliding rod 309 arranged parallel to the electric telescopic rod 306, and the output ends of the electric telescopic rod 306 and the sliding rod 309 are horizontally arranged and fixedly connected to the wedge-shaped push block 307, and the wedge-shaped push block 307 is used in conjunction with the wedge-shaped protrusion 308, and the wedge-shaped protrusion 308 is fixedly arranged on the upper surface of the filter plate 501.

[0044] In the above solution, the electric telescopic rod 306 is in a contracted state, and there is a certain distance between the wedge-shaped push block 307 and the wedge-shaped convex block 308. The filter plate 501 remains horizontal. When it is detected that a certain amount of uncrushed waste has accumulated on the filter plate 501, the electric telescopic rod 306 is activated. The electric telescopic rod 306 extends, pushing the wedge-shaped push block 307 fixedly connected thereto to move along the horizontal direction of the slide rod 309. As the wedge-shaped push block 307 moves, its inclined surface gradually contacts and interacts with the wedge-shaped convex block 308 on the upper surface of the filter plate 501. Due to the inclined surface design of the wedge-shaped push block 307 and the wedge-shaped convex block 308, the filter plate 501 receives a lateral thrust in the horizontal direction, thereby starting to tilt downward. The tilting of the filter plate 501 causes the uncrushed waste thereon to concentrate on one side and slide down to the collection area of the recycling member.

[0045] Referring to Figure 3 As shown, the recycling member includes: a recycling box 301, a feeding pipe 302, a discharging pipe 303, a rotating motor 304, and a spiral blade 305. Among them, the side wall of the recycling box 301 near the bottom is connected to the box body 404 through an inclined feeding pipe 302. The side wall of the recycling box 301 far from the feeding pipe 302 is connected with an inclined discharging pipe 303. The discharging end of the discharging pipe 303 is connected to the box body 404 through a material dropping port 101. The top end of the recycling box 301 is fixedly provided with a rotating motor 304. The output shaft of the rotating motor 304 is vertically arranged and fixedly connected to the spiral blade 305 through a coupling.

[0046] In the above solution, the uncrushed waste slides down to the inlet of the feeding pipe 302 of the recycling box 301 through the inclined surface of the filter plate 501. The rotating motor 304 is started to drive the spiral blade 305 to rotate in the recycling box 301. The rotation of the spiral blade 305 conveys the waste entering from the feeding pipe 302 upward along the bottom of the recycling box 301 to the discharging pipe 303. The waste slides down along the discharging pipe 303 under the action of gravity through the inclined setting of the discharging pipe 303 and re-enters the box body 404 through the material dropping port 101. In the box body 404, the waste is crushed again by the crushing roller 402. By recycling the uncrushed waste, it is ensured that all waste can be fully crushed, improving the waste treatment efficiency and crushing quality.

[0047] Referring to Figures 1 - 4 As shown, the collection mechanism 200 includes: an aggregate box 201, the aggregate box 201 is slidably arranged on the inner bottom wall of the box body 404, and a sealing door 202 is hinged at the front opening of the box body 404.

[0048] In the above solution, the waste first enters the crushing mechanism 400 for crushing, and then is screened by the filtering mechanism 500. The small qualified particles pass through the filter plate 501 and fall into the aggregate box 201 below. As the crushing and screening processes continue, the qualified waste accumulates continuously in the aggregate box 201. When the waste in the aggregate box 201 accumulates to a certain amount, it needs to be cleaned. At this time, the sealing door 202 at the front end of the box body 404 is opened, and the aggregate box 201 is pulled out from the box body 404.

[0049] In summary, for a waste recycling device for end tooth processing provided by the present utility model, when in use,

[0050] The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present utility model, various simple modifications can be made to the technical solutions of the present utility model, and these simple modifications all fall within the protection scope of the present utility model.

[0051] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present utility model will not separately describe various possible combination methods.

[0052] In addition, any combination can be made between different embodiments of the present utility model, as long as it does not violate the idea of the present utility model, and it should also be regarded as the content disclosed by the present utility model.

Claims

1. A device for recovering end gear processing waste, characterized in that: The waste material recycling device comprises: a workbench (100), a material drop opening (101) provided on the workbench (100), and a box (404) provided on the lower surface of the workbench (100) and connected to the material drop opening (101); a crushing mechanism (400), a filtering mechanism (500), and a collecting mechanism (200) are provided inside the box (404) from top to bottom; a circulation mechanism (300) is provided on the side of the box (404); the filtering mechanism (500) can be automatically tilted to allow waste material on its upper surface to slide into the circulation mechanism (300); and the circulation mechanism (300) is used to transport the incoming waste material into the crushing mechanism (400).

2. The end gear processing waste recovery device according to claim 1, characterized in that: The pulverizing mechanism (400) comprises: pulverizing rollers (402), a driving motor (401) and a transmission gear (403); a plurality of pulverizing rollers (402) are rotatably arranged on the inner side wall of the box body (404); the driving motor (401) is fixedly arranged on the side wall of the box body (404); an output end of the driving motor (401) is horizontally arranged and fixedly connected to one of the pulverizing rollers (402) via a shaft coupling; a transmission gear (403) is fixedly sleeved on the rotating shaft of each pulverizing roller (402); two adjacent transmission gears (403) are meshed with each other.

3. The end gear processing waste recovery device according to claim 1, characterized in that: The filtering mechanism (500) comprises a filtering plate (501), one side of the filtering plate (501) being hinged to the inner side wall of the box body (404) and the other side opposite thereto being in sliding engagement with the inner side wall of the box body (404).

4. The end gear processing waste recovery device according to claim 3, characterized in that: The box (404) is provided with a vibration assembly for driving the rod filter plate (501) to vibrate up and down to prevent clogging; wherein: The vibration assembly comprises: a rotating shaft (502), a transmission belt (503), a cam (504), a spring column (505) and a slider (506); wherein, The rotating shaft (502) is rotatably arranged on the side wall of the box body (404) and is transmission-connected to the output end of the driving motor (401) through a transmission belt (503); a plurality of cams (504) are fixedly sleeved at intervals on the rotating shaft (502); the side surface of the cams (504) contacts the upper surface of the filter plate (501); a plurality of spring columns (505) are fixedly arranged at intervals on one side of the side wall of the box body (404) that slides with the filter plate (501); the top ends of the plurality of spring columns (505) are fixedly connected to the slider (506); and a sliding groove (507) for each slider (506) to slide is provided on the bottom surface of the filter plate (501).

5. The end gear processing waste recovery device according to claim 1, characterized in that: The circulation mechanism (300) comprises: a material discharging member for driving the filter plate (501) to tilt downward, and a circulation member for circulating and conveying the incompletely crushed waste on the filter plate (501) into the crushing mechanism (400) for further crushing.

6. The end gear processing waste recovery device according to claim 5, characterized in that: The blanking parts include: an electric telescopic rod (306), a wedge-shaped push block (307), a wedge-shaped protrusion (308) and a slide rod (309); wherein, The electric telescopic rod (306) is fixedly arranged on the side wall of the box body (404), and a sliding rod (309) arranged parallel to the electric telescopic rod (306) is also fixedly arranged on the side wall of the box body (404). The output ends of the electric telescopic rod (306) and the sliding rod (309) are arranged horizontally and are both fixedly connected to a wedge-shaped push block (307). The wedge-shaped push block (307) is used in conjunction with a wedge-shaped protrusion (308), and the wedge-shaped protrusion (308) is fixedly arranged on the upper surface of the filter plate (501).

7. The end gear processing waste recovery device according to claim 5, characterized in that: The circulation parts include: a circulation box (301), a feeding pipe (302), a discharging pipe (303), a rotating motor (304) and a spiral blade (305); wherein, The side wall of the circulation box (301) close to the bottom surface is connected to the box body (404) through an inclined loading pipe (302), and the side wall of the circulation box (301) away from the loading pipe (302) is connected to an inclined discharge pipe (303), and the discharge end of the discharge pipe (303) is connected to the box body (404) through a drop port (101). A rotating motor (304) is fixedly provided at the top of the circulation box (301), and the output shaft of the rotating motor (304) is vertically arranged and fixedly connected to the spiral blade (305) through a shaft coupling.

8. The end gear processing waste recovery device according to claim 1, characterized in that: The collecting mechanism (200) comprises: a material collecting box (201), wherein the material collecting box (201) is slidably arranged on the inner bottom wall of a box body (404), and a sealing door (202) is hingedly arranged at the front end opening of the box body (404).

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