CN220699136U

CN220699136U - Metal piece polishing equipment

Info

Publication number: CN220699136U
Application number: CN202322467087.0U
Authority: CN
Inventors: 陈浩生; 范晓辉
Original assignee: Foshan Shunde Huanshuo Metal Products Co ltd
Current assignee: Foshan Shunde Huanshuo Metal Products Co ltd
Priority date: 2023-09-12
Filing date: 2023-09-12
Publication date: 2024-04-02
Anticipated expiration: 2033-09-12

Abstract

The utility model provides metal piece polishing equipment, which comprises a machine body, a feeding mechanism and a polishing mechanism, wherein the feeding mechanism is arranged on the machine body; one side of the machine body is fixedly connected with a supporting frame; the feeding mechanism is arranged on one side of the machine body, the bottom of the rotating disc is fixedly connected with the output end of the rotating motor, the placing groove is formed in the rotating disc, the outer side of the semicircular rod is in sliding connection with the inside of the fixed block, and one side of the pushing plate is fixedly connected with one end of the semicircular rod; the grinding machine structure is arranged in the machine body, one side of the grinding motor is fixedly connected with one side of the movable seat, and one end of the grinding head is fixedly connected with the output end of the grinding motor. The metal piece polishing equipment solves the problems that in the use process of the existing metal casting polishing device, the metal piece to be polished is inconvenient to automatically feed and discharge, more positions cannot be polished, and the polishing efficiency is low.

Description

Metal piece polishing equipment

Technical Field

The utility model relates to the field of metal piece machining, in particular to metal piece polishing equipment.

Background

Grinding, which is a surface modification technology, generally refers to a processing method for changing physical properties of a material surface by friction with a rough object, and mainly aims to obtain specific surface roughness so as to ensure smoothness and smoothness of a connecting piece, and metal piece grinding equipment is equipment for grinding and polishing a metal manufactured piece, and generally consists of a motor, a grinding wheel, a bracket, a control system and the like; when the device is used, the rotating speed and the rotating direction of the grinding wheel can be adjusted through the control system, so that metal pieces in different shapes can be accurately ground and polished. The device can greatly improve the working efficiency and the quality, and can ensure the safety and the stability.

The utility model provides a metal casting grinding device for 201710618683.0, through placing the metalwork in the organism and polish, need artifical manual place and take out the metalwork, reduced efficiency has increased staff's the amount of labour.

The current metal casting grinding device is inconvenient to carry out automatic feeding and discharging to the metal piece that needs to polish in the use, can't polish more positions, and the polishing efficiency is lower.

Accordingly, there is a need to provide a new metal piece grinding apparatus that solves the above-mentioned problems.

Disclosure of Invention

In order to solve the technical problems, the utility model provides metal piece polishing equipment with an automatic feeding and discharging device.

The utility model provides metal piece polishing equipment which comprises a machine body, a feeding mechanism and a polishing mechanism; one side of the machine body is fixedly connected with a supporting frame; the feeding mechanism is arranged on one side of the machine body and comprises a rotating motor, a rotating disc, a placing groove, a fixed block, a semicircular rod and a pushing plate, wherein one side of the rotating motor is fixedly connected with one side of the supporting frame, the bottom of the rotating disc is fixedly connected with the output end of the rotating motor, the placing groove is formed in the rotating disc, the bottom of the fixed block is fixedly connected with the inside of the rotating disc, the outer side of the semicircular rod is in sliding connection with the inside of the fixed block, and one side of the pushing plate is fixedly connected with one end of the semicircular rod; the utility model provides a grinding machine structure sets up in the inside of organism, grinding machanism includes vertical motor, vertical screw rod, movable block, vertical slide bar, horizontal motor, horizontal screw rod, movable seat, horizontal slide bar, grinding motor and the head of polishing, one side of vertical motor and one side fixed connection of organism, the one end of vertical screw rod and the output fixed connection of vertical motor, the both sides of vertical screw rod all rotate with the inside of organism and are connected, the inside of movable block and the outside threaded connection of vertical screw rod, the outside of vertical slide bar and the inside sliding connection of movable block, the both ends of vertical slide bar all with the inside fixed connection of organism, one side of horizontal motor and one side fixed connection of movable block, the one end of horizontal screw rod and the output fixed connection of the one side of horizontal screw rod, the outside threaded connection of horizontal screw rod and one side of movable seat, the both ends of horizontal screw rod all with one side fixed connection of movable block, one side fixed connection of motor and one side of movable seat of polishing, one side fixed connection of grinding head and the grinding head of horizontal slide bar.

As the metal piece polishing equipment provided by the utility model, preferably, the feeding mechanism further comprises a feeding air cylinder and a working air cylinder, one side of the feeding air cylinder is fixedly connected with one side of the supporting frame, one side of the working air cylinder is fixedly connected with the top of the supporting frame, and piston rods of the feeding air cylinder and the working air cylinder are fixedly connected with a pushing plate.

As the metal piece polishing equipment provided by the utility model, preferably, the polishing mechanism further comprises a water pump, a water inlet pipe and a water spray head, one side of the water pump is fixedly connected with the top of the movable seat, one end of the water inlet pipe is communicated with the input end of the water pump, the other end of the water inlet pipe is communicated with one side of the machine body, and the input end of the water spray head is communicated with the output end of the water pump.

As the metal piece polishing equipment provided by the utility model, preferably, the inside of the machine body is connected with the workbench in a sliding manner, the inside of the workbench is provided with the water outlet hole, and the top of the workbench is fixedly connected with the fixed cylinder and the discharging cylinder.

As the metal piece polishing equipment provided by the utility model, preferably, the inside of the machine body is fixedly connected with the fixed plate, the top of the fixed plate is fixedly connected with the lifting cylinder, and the piston rod of the lifting cylinder is fixedly connected with the bottom of the workbench.

As the metal piece polishing equipment provided by the utility model, preferably, one side of the machine body is provided with the filtering drawer, the outer side of the filtering drawer is in sliding connection with the inner part of the machine body, and one side of the filtering drawer is fixedly connected with the drawer handle.

As the metal piece polishing equipment provided by the utility model, preferably, the bottom of the filtering drawer is fixedly connected with the water filtering net, the bottom of the filtering drawer is provided with the water outlet, and the water outlet is arranged on one side of the machine body.

As the metal piece polishing equipment provided by the utility model, preferably, one side of the machine body is provided with the feeding conveyor belt and the discharging conveyor belt, and the feeding conveyor belt and the discharging conveyor belt are arranged in the support frame.

As the metal piece polishing equipment provided by the utility model, preferably, one side of the discharging conveyor belt is provided with the drying box, one side of the drying box is fixedly connected with one side of the supporting frame, and one side of the drying box is fixedly connected with the dust screen.

As the metal piece polishing equipment provided by the utility model, preferably, a fan and an electric heating wire are arranged in the drying box, the fan is arranged on one side of the drying box, and two ends of the electric heating wire are fixedly connected with the inside of the drying box.

Compared with the prior art, the utility model has the beneficial effects that:

this metalwork equipment of polishing, discharge the metalwork that will polish on the feeding conveyer belt, feeding conveyer belt work drives the metalwork and moves to the support frame and stop the department, feeding cylinder starts to withdraw after pushing the metalwork into the standing groove, rotating electrical machines drive rotary disk rotates, send the metalwork to the workstation side, the working cylinder starts, promote push plate and semicircle pole, send the metalwork into the organism workstation, fixed cylinder starts to carry the metalwork, drive the workstation through the lift cylinder and remove and horizontal motor, the horizontal screw rod, vertical motor and the removal of vertical screw rod drive movable seat and motor of polishing, make the head of polishing that the motor drove polish everywhere of polishing, the back of polishing is accomplished, lift cylinder drives the workstation and returns, fixed cylinder and working cylinder withdraw, the ejection of compact cylinder starts to withdraw after pushing the metalwork back into the standing groove, rotating electrical machines drive rotary disk rotates and send the metalwork to the ejection of compact conveyer belt, the ejection of compact cylinder starts, push the metalwork that has polished into the standing groove with next metalwork, promote semicircle pole and promote the impeller simultaneously, push the ejection of compact conveyer belt with the metalwork, hot-blast fan and automatic blast start-up to polish the metalwork, the wire and the automatic wire of polishing and the multiple wire need not be in the automatic position of polishing, the problem of polishing is solved in the automatic position of the metal casting has been polished, the device of polishing has been more realized.

Drawings

FIG. 1 is a schematic view of a metal piece polishing apparatus according to a preferred embodiment of the present utility model;

FIG. 2 is a schematic view of the feeding mechanism shown in FIG. 1;

FIG. 3 is a schematic view of the inside of the machine body shown in FIG. 1;

FIG. 4 is a schematic view of the structure of the table shown in FIG. 3;

fig. 5 is a schematic view illustrating the structure of the inside of the drying box shown in fig. 1.

Reference numerals in the drawings: 1. a body; 2. a feeding mechanism; 21. a rotating electric machine; 22. a rotating disc; 23. a placement groove; 24. a fixed block; 25. a semicircular rod; 26. a pushing plate; 27. a feeding cylinder; 28. a working cylinder; 3. a polishing mechanism; 31. a longitudinal motor; 32. a longitudinal screw; 33. a moving block; 34. a longitudinal slide bar; 35. a transverse motor; 36. a transverse screw; 37. a movable seat; 38. a transverse slide bar; 39. polishing a motor; 310. polishing head; 311. a water pump; 312. a water inlet pipe; 313. a water spray head; 4. a work table; 5. a water outlet hole; 6. a fixed cylinder; 7. a discharging cylinder; 8. a lifting cylinder; 9. a fixing plate; 10. a filter drawer; 11. a water filter screen; 12. a drawer handle; 13. a water outlet; 14. a support frame; 15. a feed conveyor; 16. a discharge conveyor belt; 17. a drying box; 18. a dust screen; 19. a blower; 20. heating wire.

Detailed Description

The utility model will be further described with reference to the drawings and embodiments.

Referring to fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5 in combination, fig. 1 is a schematic structural diagram of a metal piece polishing apparatus according to a preferred embodiment of the present utility model; FIG. 2 is a schematic view of the feeding mechanism shown in FIG. 1; FIG. 3 is a schematic view of the inside of the machine body shown in FIG. 1; FIG. 4 is a schematic view of the structure of the table shown in FIG. 3; fig. 5 is a schematic view illustrating the structure of the inside of the drying box shown in fig. 1. The metal piece polishing equipment comprises a machine body 1, wherein a supporting frame 14 is fixedly connected to one side of the machine body 1.

In the specific implementation process, as shown in fig. 1 and 2, the feeding mechanism 2 is arranged at one side of the machine body 1, the feeding mechanism 2 comprises a rotating motor 21, a rotating disc 22, a placing groove 23, a fixed block 24, a semicircular rod 25 and a pushing plate 26, one side of the rotating motor 21 is fixedly connected with one side of the supporting frame 14, the bottom of the rotating disc 22 is fixedly connected with the output end of the rotating motor 21, the placing groove 23 is arranged on the rotating disc 22, the bottom of the fixed block 24 is fixedly connected with the inside of the rotating disc 22, the outer side of the semicircular rod 25 is in sliding connection with the inside of the fixed block 24, and one side of the pushing plate 26 is fixedly connected with one end of the semicircular rod 25;

the feeding mechanism 2 further comprises a feeding air cylinder 27 and a working air cylinder 28, one side of the feeding air cylinder 27 is fixedly connected with one side of the supporting frame 14, one side of the working air cylinder 28 is fixedly connected with the top of the supporting frame 14, and piston rods of the feeding air cylinder 27 and the working air cylinder 28 are fixedly connected with a pushing plate 26.

It should be noted that: when automatic feeding and discharging is needed, the metal piece enters the placing groove 23 through the feeding air cylinder 27, the metal piece moves to drive the pushing plate 26 to move so as to drive the semicircular rod 25 to move in the fixed block 24, the pushing plate 26 at the other end of the semicircular rod 25 moves to push out the finished metal piece, the feeding air cylinder 27 withdraws, the rotating motor 21 drives the rotating disc 22 to move, the metal piece to be polished is sent to the polishing mechanism 3, the polished metal piece is sent to the discharging conveyor belt 16, the working air cylinder 28 starts to push the pushing plate 26 and the semicircular rod 25, and then the metal piece to be polished is pushed into the polishing mechanism 3 in the machine body 1, so that the purpose of automatically feeding and discharging the metal piece is achieved, and labor is saved.

Referring to fig. 1 and 3, the polishing mechanism 3 is disposed in the machine body 1, and the polishing mechanism 3 includes a longitudinal motor 31, a longitudinal screw 32, a moving block 33, a longitudinal slide bar 34, a transverse motor 35, a transverse screw 36, a movable seat 37, a transverse slide bar 38, a polishing motor 39 and a polishing head 310, one side of the longitudinal motor 31 is fixedly connected with one side of the machine body 1, one end of the longitudinal screw 32 is fixedly connected with an output end of the longitudinal motor 31, both sides of the longitudinal screw 32 are rotatably connected with the interior of the machine body 1, the interior of the moving block 33 is in threaded connection with an outer side of the longitudinal screw 32, an outer side of the longitudinal slide bar 34 is in sliding connection with an inner side of the moving block 33, both ends of the longitudinal slide bar 34 are fixedly connected with the interior of the machine body 1, one side of the transverse motor 35 is fixedly connected with one side of the moving block 33, one end of the transverse screw 36 is fixedly connected with an output end of the transverse motor 35, both ends of the transverse screw 36 are rotatably connected with one side of the movable seat 37, both ends of the transverse slide bar 38 are slidably connected with an inner side of the movable seat 37, and one side of the motor 33 is fixedly connected with the polishing head 39;

the polishing mechanism 3 further comprises a water pump 311, a water inlet pipe 312 and a water spraying head 313, one side of the water pump 311 is fixedly connected with the top of the movable seat 37, one end of the water inlet pipe 312 is communicated with the input end of the water pump 311, the other end of the water inlet pipe 312 is communicated with one side of the machine body 1, and the input end of the water spraying head 313 is communicated with the output end of the water pump 311.

It should be noted that: when polishing is needed, the vertical motor 31 works to drive the vertical screw rod 32 to rotate, the movable block 33 is moved, the transverse motor 35 is arranged to drive the transverse screw rod 36 to rotate, the movable seat 37 is moved, the purpose that the movable seat 37 can drive the polishing motor 39 to transversely and longitudinally move at will is achieved, the polishing motor 39 drives the polishing head 310 to rotate to polish, the purpose that polishing at any position can be achieved, and the purpose of cooling during polishing is achieved through the water pump 311, the water inlet pipe 312 and the water spray head 313.

Referring to fig. 1, 3 and 4, the inside sliding connection of organism 1 has workstation 4, and downthehole 5 has been seted up to the inside of workstation 4, and the top fixedly connected with of workstation 4 is fixed cylinder 6 and ejection of compact cylinder 7, and the inside fixedly connected with fixed plate 9 of organism 1, the top fixedly connected with lift cylinder 8 of fixed plate 9, the piston rod of lift cylinder 8 and the bottom fixedly connected of workstation 4.

It should be noted that: through the workstation 4 that sets up, provide the platform of polishing, through the downthehole 5 that sets up, realize the purpose of discharging cooling water, through the fixed cylinder 6 that sets up, clip the metalwork and fix the purpose when realizing polishing, through the ejection of compact cylinder 7 that sets up, realize polishing and release the metalwork after accomplishing and send back the purpose of standing groove 23, through the lifting cylinder 8 that sets up, realize the purpose that adjustable workstation 4 is high in order to acquire more polishing scope, through the fixed plate 9 that sets up, conveniently fix lifting cylinder 8.

Referring to fig. 1 and 3, a filter drawer 10 is provided at one side of the machine body 1, the outside of the filter drawer 10 is slidably connected with the inside of the machine body 1, a drawer handle 12 is fixedly connected to one side of the filter drawer 10, a water filtering net 11 is fixedly connected to the bottom of the filter drawer 10, a water outlet 13 is provided at the bottom of the filter drawer 10, and the water outlet 13 is opened at one side of the machine body 1.

It should be noted that: through the filtration drawer 10 that sets up, conveniently filter the piece that produces to grinding and collect, through the drawer handle 12 that sets up, conveniently take out and filter drawer 10 clearance, through the drainage net 11 that sets up, with water filtration outflow, through the delivery port 13 that sets up, conveniently with the water drainage.

Referring to fig. 1, a feeding conveyor belt 15 and a discharging conveyor belt 16 are arranged on one side of a machine body 1, the feeding conveyor belt 15 and the discharging conveyor belt 16 are arranged in a supporting frame 14, a drying box 17 is arranged on one side of the discharging conveyor belt 16, one side of the drying box 17 is fixedly connected with one side of the supporting frame 14, a dust screen 18 is fixedly connected with one side of the drying box 17, a fan 19 and an electric heating wire 20 are arranged in the drying box 17, the fan 19 is arranged on one side of the drying box 17, and two ends of the electric heating wire 20 are fixedly connected with the inside of the drying box 17.

It should be noted that: through the feeding conveyer belt 15 and the ejection of compact conveyer belt 16 that set up, realize the transportation to the metalwork, through the stoving case 17 that sets up, the convenience is dried the metalwork of polishing completion, through the dust screen 18 that sets up, conveniently filters the air dust, through the fan 19 that sets up, realizes blowing to the metalwork, through the heating wire 20 that sets up, realizes the purpose of heating to the air.

The working principle of the metal piece polishing equipment provided by the utility model is as follows:

when in use, in the actual use, when the metal piece to be polished is required to be polished, the metal piece to be polished is discharged on the feeding conveyor belt 15, the feeding conveyor belt 15 drives the metal piece to move, the feeding cylinder 27 is started to push the metal piece into the placing groove 23 and then to retract, the rotating motor 21 drives the rotating disk 22 to rotate, further the metal piece is driven to move to the position of the polishing mechanism 3, the working cylinder 28 is started to push the pushing plate 26 to move, further the semicircular rod 25 is driven to move, the pushing plate 26 at the other end is pushed to move, the metal piece is pushed to the workbench 4, then the working cylinder 28 is retracted, the longitudinal motor 31 is arranged to drive the longitudinal screw 32 to rotate, the moving block 33 drives the transverse motor 35 and the transverse screw 36 to longitudinally move, the transverse screw 36 is driven to rotate through the arranged transverse motor 35, the movable seat 37 is transversely moved, the movable seat 37 can be driven to move in any direction of the polishing motor 39, the polishing motor 39 drives the polishing head 310 to rotate for polishing, the lifting air cylinder 8 is arranged to drive the workbench 4 to move up and down, the purpose of obtaining more polishing ranges is achieved, the water is sucked from the water inlet pipe 312 through the arranged water pump 311, then the water is sprayed out from the water spraying head 313, the purpose of radiating and dedusting at the polishing position is achieved, sewage is discharged through the arranged water outlet 5, enters the filtering drawer 10 and is filtered by the water filtering net 11, metal scraps at the polishing side are left, the filtered water is discharged from the water outlet 13, the fixed air cylinder 6 is retracted after polishing is finished, the discharging air cylinder 7 is started to push the finished metal pieces back to the placing groove 23, the rotary motor 21 is operated to drive the rotary disc 22 to rotate, the metal pieces are driven to move to the discharging conveyor belt 16, the feeding air cylinder 27 is started to push the next metal piece to be polished to enter the placing groove 23, the pushing plate 26 is extruded to move, the semicircular rod 25 is driven to move, the pushing plate 26 at the other end is driven to move to push the finished metal piece out of the placing groove 23 and enter the discharging conveyor belt 16, the discharging conveyor belt 16 is started to send the finished metal piece out, the fan 19 and the heating wire 20 are started, hot air is blown out, the finished metal piece is dried, and the purpose of automatically feeding and discharging materials for multi-position polishing is achieved.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. A piece of metal grinding apparatus, comprising:

the device comprises a machine body (1), wherein a supporting frame (14) is fixedly connected to one side of the machine body (1);

the feeding mechanism (2) is arranged on one side of the machine body (1), the feeding mechanism (2) comprises a rotating motor (21), a rotating disc (22), a placing groove (23), a fixed block (24), a semicircular rod (25) and a pushing plate (26), one side of the rotating motor (21) is fixedly connected with one side of the supporting frame (14), the bottom of the rotating disc (22) is fixedly connected with the output end of the rotating motor (21), the placing groove (23) is formed in the rotating disc (22), the bottom of the fixed block (24) is fixedly connected with the inside of the rotating disc (22), the outer side of the semicircular rod (25) is in sliding connection with the inside of the fixed block (24), and one side of the pushing plate (26) is fixedly connected with one end of the semicircular rod (25);

the polishing mechanism (3), the polishing mechanism (3) is arranged in the machine body (1), the polishing mechanism (3) comprises a longitudinal motor (31), a longitudinal screw rod (32), a moving block (33), a longitudinal slide bar (34), a transverse motor (35), a transverse screw rod (36), a movable seat (37), a transverse slide bar (38), a polishing motor (39) and a polishing head (310), one side of the longitudinal motor (31) is fixedly connected with one side of the machine body (1), one end of the longitudinal screw rod (32) is fixedly connected with the output end of the longitudinal motor (31), two sides of the longitudinal screw rod (32) are both in rotary connection with the interior of the machine body (1), the interior of the moving block (33) is in threaded connection with the outer side of the longitudinal screw rod (32), two ends of the longitudinal slide bar (34) are both fixedly connected with the interior of the machine body (1), one side of the transverse motor (35) is fixedly connected with one side of the moving block (33), one end of the transverse motor (36) is both ends of the transverse screw rod (35) are both fixedly connected with the outer side of the transverse screw rod (33) and are both fixedly connected with the outer side of the moving seat (37), the outside of sideslip pole (38) and the inside sliding connection of movable seat (37), the both ends of sideslip pole (38) all with one side fixed connection of movable block (33), one side of polishing motor (39) and one side fixed connection of movable seat (37), the one end of polishing head (310) and the output fixed connection of polishing motor (39).

2. The metal piece polishing equipment according to claim 1, wherein the feeding mechanism (2) further comprises a feeding cylinder (27) and a working cylinder (28), one side of the feeding cylinder (27) is fixedly connected with one side of the supporting frame (14), one side of the working cylinder (28) is fixedly connected with the top of the supporting frame (14), and piston rods of the feeding cylinder (27) and the working cylinder (28) are fixedly connected with a pushing plate (26).

3. The metal piece polishing device according to claim 1, wherein the polishing mechanism (3) further comprises a water pump (311), a water inlet pipe (312) and a water spray head (313), one side of the water pump (311) is fixedly connected with the top of the movable seat (37), one end of the water inlet pipe (312) is communicated with the input end of the water pump (311), the other end of the water inlet pipe (312) is communicated with one side of the machine body (1), and the input end of the water spray head (313) is communicated with the output end of the water pump (311).

4. The metal piece polishing device according to claim 1, wherein a workbench (4) is slidably connected inside the machine body (1), a water outlet hole (5) is formed in the workbench (4), and a fixed cylinder (6) and a discharging cylinder (7) are fixedly connected to the top of the workbench (4).

5. The metal piece polishing device according to claim 4, wherein a fixing plate (9) is fixedly connected to the inside of the machine body (1), a lifting cylinder (8) is fixedly connected to the top of the fixing plate (9), and a piston rod of the lifting cylinder (8) is fixedly connected to the bottom of the workbench (4).

6. The metal piece polishing device according to claim 1, wherein a filter drawer (10) is arranged on one side of the machine body (1), the outer side of the filter drawer (10) is in sliding connection with the interior of the machine body (1), and a drawer handle (12) is fixedly connected to one side of the filter drawer (10).

7. The metal piece polishing equipment according to claim 6, wherein the bottom of the filtering drawer (10) is fixedly connected with a water filtering net (11), a water outlet (13) is arranged at the bottom of the filtering drawer (10), and the water outlet (13) is arranged on one side of the machine body (1).

8. The metal piece polishing apparatus according to claim 1, wherein one side of the machine body (1) is provided with a feeding conveyor belt (15) and a discharging conveyor belt (16), and both the feeding conveyor belt (15) and the discharging conveyor belt (16) are disposed inside the supporting frame (14).

9. The metal piece polishing equipment according to claim 8, wherein a drying box (17) is arranged on one side of the discharging conveyor belt (16), one side of the drying box (17) is fixedly connected with one side of the supporting frame (14), and one side of the drying box (17) is fixedly connected with a dust screen (18).

10. The metal piece polishing device according to claim 9, wherein a fan (19) and an electric heating wire (20) are arranged in the drying box (17), the fan (19) is arranged on one side of the drying box (17), and two ends of the electric heating wire (20) are fixedly connected with the inside of the drying box (17).