Metal stamping part surface treatment device

Abstract

The invention discloses a metal stamping part surface treatment device which comprises a bottom plate, a liquid storage tank, a lifting assembly, an overturning assembly and a reaction box, the reaction box is fixedly connected to one side of the upper surface of the bottom plate, the liquid storage tank is fixedly connected to one side of the reaction box, and the reaction box communicates with the liquid storage tank; two sets of electric push rods are fixedly connected to the two sides of the surface of the reaction box, the piston ends of the four sets of electric push rods are jointly and fixedly connected with an upper cover plate, and hinges are fixedly connected to the upper surface of the upper cover plate. The use of the lifting assembly can prevent the rust-proof solution from splashing onto the skin and hurting the skin when a worker directly takes the workpiece, the electric push rod can push the upper cover plate to rise, the interior of the reaction box is convenient to clean, and the effects of effectively improving the workpiece treatment efficiency and saving time and labor during workpiece treatment are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of metal stamping part processing, and in particular relates to a metal stamping part surface treatment device. Background Art

[0002] The surface of metal stamping parts will inevitably be oxidized during various heat treatments, mechanical processing, transportation and storage processes, producing an uneven oxide layer, which will change the physical and chemical properties of the metal surface and shorten the service life of the metal stamping parts. In order to increase the corrosion and oxidation resistance of metal stamping parts, metal stamping parts need to undergo surface treatment operations after forming, which is affected by the structure of metal stamping parts.

[0003] The problem with the existing technology is that this type of operation is generally performed manually, and manual operation has high precision, which can directly increase production costs while reducing work efficiency. Especially in the chemical surface treatment process, once manual operation is performed, the operation is complicated and chemical substances are very likely to splash on the human body surface and cause damage to the human body. Therefore, we propose a metal stamping surface treatment device. Summary of the invention

[0004] The object of the present invention is to provide a surface treatment device for metal stamping parts to solve the problems raised in the above background technology.

[0005] The present invention is implemented in this way. A metal stamping part surface treatment device includes a base plate, a liquid storage tank, a lifting assembly, a flip assembly and a reaction box. The reaction box is fixedly connected to one side of the upper surface of the base plate, the liquid storage tank is fixedly connected to one side of the reaction box, and the reaction box is connected to the liquid storage tank. Two groups of electric push rods are fixedly connected to both sides of the surface of the reaction box. The piston ends of the four groups of electric push rods are all fixedly connected to an upper cover plate. The upper surface of the upper cover plate is fixedly connected with a hinge, and the hinge surface is fixedly connected with a movable plate. One side of the lower surface of the movable plate is fixedly connected to a limited shell. A drain rack is arranged at one end of the bottom of the reaction box, and the limited shell is used to position the drain rack. The lifting assembly is arranged on the surface of the reaction box, and the flip assembly is arranged on the surface of the lifting assembly. The lifting assembly is used for putting in and taking out a workpiece, and the flip assembly is used for installing and flipping the workpiece. A first motor is fixedly connected to one end of the lower surface of the base plate, and a glass impeller is fixedly connected to the output end of the first motor. A metering pump is fixedly connected to the upper surface of the liquid storage tank, and the metering pump is connected between the liquid storage tank and the reaction box.

[0006] As a preferred embodiment of the present invention, the lifting assembly includes a second motor, a connecting rod, a third transmission wheel, a third gear and a lifting plate, the second motor is fixedly connected to one side of the surface of the reaction box, and the two groups of connecting rods are respectively movably connected between the drain rack and the reaction box.

[0007] As a preferred embodiment of the present invention, the two groups of the third gears are respectively fixedly connected to one end of the two groups of connecting rods, the two groups of the third transmission wheels are respectively fixedly connected to the other end of the two groups of connecting rod surfaces, and one end of the two groups of connecting rods is fixedly connected with a second gear.

[0008] As a preferred embodiment of the present invention, the two groups of third transmission wheels are commonly connected by a second belt, one end of one group of connecting rods is fixedly connected to the second transmission wheel, and the output end of the second motor is fixedly connected to the first transmission wheel.

[0009] As a preferred embodiment of the present invention, the first transmission wheel and the second transmission wheel are both commonly connected by a first belt, the surfaces of the two groups of the second gears are meshed with toothed plates, the interiors of the two groups of toothed plates are movably connected with limit blocks, and the limit blocks are fixedly connected to one side of the reaction box, the two groups of lifting plates are respectively fixedly connected to one end of the two groups of toothed plates, and one end of the two groups of toothed plates are fixedly connected with two groups of spring push rods.

[0010] As a preferred embodiment of the present invention, the flipping assembly includes a limit plate, a limit wheel, a rotating rod and a vertical plate, the limit plate is fixedly connected to one end of the drain rack, and the two groups of limit wheels are movably connected to both sides inside the limit plate, two groups of rotating rods are respectively fixedly connected to one side of the two groups of limit wheels, and the other two groups of rotating rods are respectively movably connected to the inside of the two groups of lifting plates.

[0011] As a preferred embodiment of the present invention, one end of the two groups of rotating rods are fixedly connected to the first gear, the surfaces of the four groups of rotating rods are movably connected to movable frames, the lower surfaces of the four groups of movable frames are fixedly connected to inclined plates, and a spring pull rod is commonly fixedly connected between one end of one side of the corresponding two groups of movable frames.

[0012] As a preferred embodiment of the present invention, two groups of rotating rods have screws threadedly connected to one end thereof, the other two groups of rotating rods and one end of the two groups of screws are fixedly connected to a clamping shell, and the two groups of vertical plates are respectively fixedly connected to the two ends of the upper surface of the drain rack.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. When in use, the present invention uses a hinge to open the movable plate, then installs the workpiece on the surface of the flip assembly, and then the lifting assembly drives the workpiece to move downward. After moving down to a certain position, the lifting assembly will synchronously drive the flip assembly to rotate, and in the whole process, a certain amount of anti-rust water in the liquid storage tank will be discharged into the reaction box through the metering pump and mixed with water to form an anti-rust solution, which is used for surface treatment of metal stamping parts to prevent metal rust, and when the first motor drives the glass impeller to rotate, the anti-rust solution can be quickly and evenly mixed. The use of the flip assembly can speed up the processing efficiency of the workpiece, and the use of the lifting assembly can prevent the anti-rust solution from splashing onto the skin and causing damage to the skin when the staff directly picks up the workpiece. The electric push rod can push the upper cover plate to rise, which is convenient for cleaning the inside of the reaction box, thereby effectively improving the processing efficiency of the workpiece and saving time and effort when processing the workpiece.

[0014] 2. The present invention drives the first transmission wheel to rotate when the second motor is running, and with the use of the first belt, one group of the second transmission wheel, the connecting rod, the second gear, the third transmission wheel and the third gear will rotate. Since the use of the second belt will drive another group of connecting rods, the third transmission wheel, the second gear and the third gear to rotate, the two groups of second gears will drive the two groups of tooth plates and the lifting plate to rise and fall. The limit block can limit the tooth plate. The lifting plate is used to drive the flipping assembly to rise and fall. The third gear is used to drive the workpiece to flip, thereby achieving the effect of facilitating the picking and placing of the workpiece and preventing the chemical solution from sticking to the skin.

[0015] 3. When in use, the present invention places the workpiece between the two groups of clamping shells, then rotates the screw and drives the two groups of clamping shells to move forward to clamp and fix the workpiece, then the lifting assembly drives the flipping assembly to move downward, and when it moves down to a certain extent, the inclined plate will contact and squeeze the vertical plate, so that the inclined plate drives the corresponding movable frame to move on the surface of the rotating rod, so that the movable frame can be separated from the contact with the workpiece (in the process of the tooth plate driving the workpiece to move downward, the movable frame can support the bottom of the workpiece), finally the third gear will drive the first gear to rotate, and the first gear will drive the workpiece to flip (when the second gear drives the tooth plate to move down to a certain position, the spring push rod will contact the bottom plate, and the second gear can use the spring push rod to continuously move the tooth plate. Due to the design of the tooth plate, after moving to a certain position, it will no longer be driven by the second gear), the spring pull rod can reset the corresponding two groups of movable frames, thereby effectively accelerating the processing efficiency of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the present invention; Figure 2 It is a schematic diagram of a local structure provided by an embodiment of the present invention; Figure 3 is a schematic diagram of the structure of a flip assembly provided by an embodiment of the present invention; Figure 4 is a schematic diagram of the structure of a lifting assembly provided by an embodiment of the present invention; Figure 5 is a schematic diagram of the structure of a glass impeller provided by an embodiment of the present invention; Figure 6 is a schematic diagram of the structure of an electric push rod provided by an embodiment of the present invention; Figure 7 It is a schematic diagram of the hinge structure provided by an embodiment of the present invention.

[0017] In the figure: 1, bottom plate; 2, liquid storage tank; 3, hinge; 4, upper cover plate; 5, electric push rod; 6, movable plate; 7, limit shell; 8, first motor; 9, glass impeller; 10, lifting assembly; 1001, tooth plate; 1002, second motor; 1003, first transmission wheel; 1004, first belt; 1005, second transmission wheel; 1006, third transmission wheel; 1007, second gear; 1008, lifting plate; 1009, connecting rod; 1010, third gear; 1011, second belt; 1012, limit block; 11, flip assembly; 1101, first gear; 1102, rotating rod; 1103, clamping shell; 1104, movable frame; 1105, inclined plate; 1106, spring pull rod; 1107, vertical plate; 1108, screw; 1109, limit wheel; 1110, limit plate; 12, drain rack; 13, reaction box. DETAILED DESCRIPTION

[0018] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0019] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.

[0020] like Figures 1 to 7As shown, a metal stamping surface treatment device provided by an embodiment of the present invention comprises a bottom plate 1, a liquid storage tank 2, a lifting assembly 10, a flip assembly 11 and a reaction box 13, wherein the reaction box 13 is fixedly connected to one side of the upper surface of the bottom plate 1, the liquid storage tank 2 is fixedly connected to one side of the reaction box 13, and the reaction box 13 is connected to the liquid storage tank 2, two groups of electric push rods 5 are fixedly connected to both sides of the surface of the reaction box 13, the piston ends of the four groups of electric push rods 5 are fixedly connected to an upper cover plate 4, the upper surface of the upper cover plate 4 is fixedly connected to a hinge 3, the surface of the hinge 3 is fixedly connected to a movable plate 6, and the lower surface of the movable plate 6 is fixedly connected to a hinge 3. A limiting shell 7 is fixedly connected to the side, a drain rack 12 is arranged at one end of the bottom of the reaction box 13, the limiting shell 7 is used to position the drain rack 12, the lifting component 10 is arranged on the surface of the reaction box 13, and the flipping component 11 is arranged on the surface of the lifting component 10. The lifting component 10 is used for putting in and taking out the workpiece, and the flipping component 11 is used for installing and flipping the workpiece. A first motor 8 is fixedly connected to one end of the lower surface of the base plate 1, and a glass impeller 9 is fixedly connected to the output end of the first motor 8. A metering pump 14 is fixedly connected to the upper surface of the liquid storage tank 2, and the metering pump 14 is connected between the liquid storage tank 2 and the reaction box 13.

[0021] The above scheme is adopted: when in use, the movable plate 6 is opened by the hinge 3, and then the workpiece is installed on the surface of the flip component 11, and then the lifting component 10 will drive the workpiece to move downward. After moving down to a certain position, the lifting component 10 will synchronously drive the flip component 11 to rotate, and in the whole process, a certain amount of anti-rust water in the liquid storage tank 2 will be discharged into the reaction box 13 through the metering pump 14 and mixed with water to form an anti-rust solution, which is used for surface treatment of metal stamping parts to prevent metal rust, and when the first motor 8 drives the glass impeller 9 to rotate, the anti-rust solution can be quickly and evenly mixed. The use of the flip component 11 can speed up the processing efficiency of the workpiece, and the use of the lifting component 10 can prevent the anti-rust solution from splashing on the skin and causing damage to the skin when the staff directly picks up the workpiece. The electric push rod 5 can push the upper cover plate 4 to rise, which is convenient for cleaning the inside of the reaction box 13, thereby effectively improving the processing efficiency of the workpiece and saving time and effort when processing the workpiece.

[0022] refer to Figure 2 and Figure 4The lifting assembly 10 includes a second motor 1002, a connecting rod 1009, a third transmission wheel 1006, a third gear 1010 and a lifting plate 1008. The second motor 1002 is fixedly connected to one side of the surface of the reaction box 13. The two groups of connecting rods 1009 are movably connected between the drain rack 12 and the reaction box 13; the two groups of third gears 1010 are fixedly connected to one end of the two groups of connecting rods 1009, and the two groups of third transmission wheels 1006 are fixedly connected to the other end of the surface of the two groups of connecting rods 1009. One end of the two groups of connecting rods 1009 is fixedly connected with a second gear 1007; the two groups of third transmission wheels 1006 are commonly connected to the second belt 101 1, one end of a group of connecting rods 1009 is fixedly connected to the second transmission wheel 1005, and the output end of the second motor 1002 is fixedly connected to the first transmission wheel 1003; the first transmission wheel 1003 and the second transmission wheel 1005 are both connected to the first belt 1004 for transmission, the surfaces of the two groups of second gears 1007 are meshed with toothed plates 1001 for transmission, the two groups of toothed plates 1001 are movably connected to the limiting blocks 1012 inside, and the limiting blocks 1012 are fixedly connected to one side of the reaction box 13, the two groups of lifting plates 1008 are respectively fixedly connected to one end of the two groups of toothed plates 1001, and the two groups of toothed plates 1001 are fixedly connected to two groups of spring top rods 1013 at one end.

[0023] The above scheme is adopted: when the second motor 1002 is running, it will drive the first transmission wheel 1003 to rotate, and with the use of the first belt 1004, one group of the second transmission wheel 1005, the connecting rod 1009, the second gear 1007, the third transmission wheel 1006 and the third gear 1010 will be rotated. Due to the use of the second belt 1011, another group of connecting rods 1009, the third transmission wheel 1006, the second gear 1007 and the third gear 1010 will be driven to rotate, so the two groups of second gears 1007 will drive the two groups of tooth plates 1001 and the lifting plate 1008 to rise and fall, the limit block 1012 can limit the tooth plate 1001, the lifting plate 1008 is used to drive the flipping assembly 11 to rise and fall, and the third gear 1010 is used to drive the workpiece to flip, thereby achieving the effect of facilitating the removal and placement of the workpiece and preventing the chemical solution from sticking to the skin.

[0024] refer to Figure 2 and Figure 3The flip assembly 11 includes a limit plate 1110, a limit wheel 1109, a rotating rod 1102 and a vertical plate 1107. The limit plate 1110 is fixedly connected to one end of the drain rack 12. Two sets of limit wheels 1109 are movably connected to both sides of the limit plate 1110. Two sets of rotating rods 1102 are fixedly connected to one side of the two sets of limit wheels 1109, and the other two sets of rotating rods 1102 are movably connected to the inside of the two sets of lifting plates 1008. One end of each of the two sets of rotating rods 1102 is fixedly connected to the first gear 1101 The surfaces of the four groups of rotating rods 1102 are movably connected with movable frames 1104, and the lower surfaces of the four groups of movable frames 1104 are fixedly connected with inclined plates 1105. The corresponding two groups of movable frames 1104 are commonly fixedly connected with spring pull rods 1106 on one end; two groups of rotating rods 1102 are internally threaded with screws 1108 at one end, and the other two groups of rotating rods 1102 and one end of the two groups of screws 1108 are fixedly connected with clamping shells 1103, and two groups of vertical plates 1107 are respectively fixedly connected to the two ends of the upper surface of the drain rack 12.

[0025] The above scheme is adopted: when in use, the workpiece is placed between the two groups of clamping shells 1103, and then the screw 1108 is rotated to drive the two groups of clamping shells 1103 to move forward to clamp and fix the workpiece, and then the lifting assembly 10 will drive the flip assembly 11 to move downward. When it moves downward to a certain extent, the inclined plate 1105 will contact and squeeze the vertical plate 1107, so that the inclined plate 1105 drives the corresponding movable frame 1104 to move on the surface of the rotating rod 1102, so that the movable frame 1104 can be separated from the contact with the workpiece. (In the process of the tooth plate 1001 driving the workpiece to move downward, the movable frame 1104 can support the bottom of the workpiece. ), and finally the third gear 1010 will drive the first gear 1101 to rotate, and the first gear 1101 will drive the workpiece to flip (when the second gear 1007 drives the tooth plate 1001 to move down to a certain position, the spring push rod 1013 will contact the bottom plate, and the second gear 1007 can use the spring push rod 1013 to continuously move the tooth plate 1001. Due to the design of the tooth plate 1001, after moving to a certain position, it will no longer be driven by the second gear 1007), the spring pull rod 1106 can reset the corresponding two sets of movable frames 1104, thereby effectively speeding up the processing efficiency of the workpiece.

[0026] Working principle of the present invention: When in use, when the second motor 1002 is running, it will drive the first transmission wheel 1003 to rotate, and with the use of the first belt 1004, one group of the second transmission wheel 1005, the connecting rod 1009, the second gear 1007, the third transmission wheel 1006 and the third gear 1010 will be rotated. Due to the use of the second belt 1011, another group of connecting rods 1009, the third transmission wheel 1006, the second gear 1007 and the third gear 1010 will be driven to rotate, so the two groups of second gears 1007 will drive the two groups of tooth plates 1001 and the lifting plate 1008 to lift and lower. The limit block 1012 can limit the tooth plate 1001. The lifting plate 1008 is used to drive the flipping assembly 11 to lift and lower. The third gear 1010 is used to drive the workpiece to flip, and the workpiece is placed between the two groups of clamping shells 1103. Then, the screw 1108 is rotated to drive two groups of clamping shells 1103 to move forward to clamp and fix the workpiece. Component 10 will drive the flip assembly 11 to move downward. When it moves downward to a certain extent, the inclined plate 1105 will contact and squeeze the vertical plate 1107, so that the inclined plate 1105 drives the corresponding movable frame 1104 to move on the surface of the rotating rod 1102, so that the movable frame 1104 can be separated from the contact with the workpiece (in the process of the tooth plate 1001 driving the workpiece to move downward, the movable frame 1104 can support the bottom of the workpiece), and finally the third gear 1010 will drive the first gear 1101 to rotate, and the first gear 1101 will drive the workpiece to flip (when the second gear 1007 drives the tooth plate 1001 to move downward to a certain position, the spring push rod 1013 will contact the bottom plate, and the second gear 1007 can use the spring push rod 1013 to continuously move the tooth plate 1001. Due to the design of the tooth plate 1001, after moving to a certain position, it will no longer be driven by the second gear 1007), and the spring pull rod 1106 can reset the corresponding two sets of movable frames 1104.

[0027] To sum up: this metal stamping part surface treatment device, through the structure of the flip component 11, the first gear 1101, the rotating rod 1102, the clamping shell 1103, the movable frame 1104, the inclined plate 1105, the spring pull rod 1106, the vertical plate 1107, the screw 1108, the limiting wheel 1109 and the limiting plate 1110, solves the problem that this type of operation is generally performed manually. The manual operation has high precision, but it also reduces the work efficiency and directly increases the production cost. Especially in the chemical surface treatment process, once manual operation is performed, the operation is complicated and the chemical substances are very likely to splash on the human body surface and cause damage to the human body.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A surface treatment device for metal stamping parts, comprising a base plate (1), a liquid storage tank (2), a lifting assembly (10), a turning assembly (11) and a reaction box (13), characterized in that: The reaction box (13) is fixedly connected to one side of the upper surface of the bottom plate (1), the liquid storage box (2) is fixedly connected to one side of the reaction box (13), and the reaction box (13) is connected to the liquid storage box (2). Two groups of electric push rods (5) are fixedly connected to both sides of the surface of the reaction box (13), and the piston ends of the four groups of electric push rods (5) are fixedly connected to the upper cover plate (4). The upper surface of the upper cover plate (4) is fixedly connected to a hinge (3), and the surface of the hinge (3) is fixedly connected to a movable plate (6). One side of the lower surface of the movable plate (6) is fixedly connected to a limited space shell (7). A drain rack (12) is provided at one end of the bottom of the reaction box (13). ), the limiting shell (7) is used to position the drain rack (12), the lifting component (10) is arranged on the surface of the reaction box (13), the flip component (11) is arranged on the surface of the lifting component (10), the lifting component (10) is used to put in and take out the workpiece, and the flip component (11) is used to install and flip the workpiece, one end of the lower surface of the base plate (1) is fixedly connected to the first motor (8), the output end of the first motor (8) is fixedly connected to the glass impeller (9), and the upper surface of the liquid storage tank (2) is fixedly connected to the metering pump (14), and the metering pump (14) is connected between the liquid storage tank (2) and the reaction box (13).

2. A metal stamping surface treatment device as claimed in claim 1, characterized in that: The lifting assembly (10) comprises a second motor (1002), a connecting rod (1009), a third transmission wheel (1006), a third gear (1010) and a lifting plate (1008); the second motor (1002) is fixedly connected to one side of the surface of the reaction box (13); and two sets of connecting rods (1009) are movably connected between the drain rack (12) and the reaction box (13), respectively.

3. A metal stamping surface treatment device as claimed in claim 2, characterized in that: The two groups of third gears (1010) are respectively fixedly connected to one end of the two groups of connecting rods (1009), the two groups of third transmission wheels (1006) are respectively fixedly connected to the other end of the surface of the two groups of connecting rods (1009), and one end of the two groups of connecting rods (1009) is fixedly connected to the second gear (1007).

4. A metal stamping surface treatment device as claimed in claim 3, characterized in that: The two groups of third transmission wheels (1006) are both connected to each other by a second belt (1011), one end of one group of connecting rods (1009) is fixedly connected to the second transmission wheel (1005), and the output end of the second motor (1002) is fixedly connected to the first transmission wheel (1003).

5. A metal stamping surface treatment device as claimed in claim 4, characterized in that: The first transmission wheel (1003) and the second transmission wheel (1005) are both connected to each other by a first belt (1004); the surfaces of the two sets of the second gears (1007) are meshed with toothed plates (1001); the two sets of toothed plates (1001) are movably connected to limit blocks (1012) inside, and the limit blocks (1012) are fixedly connected to one side of the reaction box (13); the two sets of lifting plates (1008) are respectively fixedly connected to one end of the two sets of toothed plates (1001); and the two sets of spring push rods (1013) are fixedly connected to one end of the two sets of toothed plates (1001).

6. A metal stamping surface treatment device as claimed in claim 2, characterized in that: The flip assembly (11) comprises a limit plate (1110), a limit wheel (1109), a rotating rod (1102) and a vertical plate (1107); the limit plate (1110) is fixedly connected to one end of the drain rack (12); two groups of limit wheels (1109) are movably connected to two sides of the limit plate (1110), two groups of rotating rods (1102) are fixedly connected to one side of the two groups of limit wheels (1109), and the other two groups of rotating rods (1102) are movably connected to the inside of the two groups of lifting plates (1008).

7. A metal stamping surface treatment device as claimed in claim 6, characterized in that: One end of two groups of rotating rods (1102) is fixedly connected to a first gear (1101), the surfaces of four groups of rotating rods (1102) are movably connected to movable frames (1104), the lower surfaces of the four groups of movable frames (1104) are fixedly connected to inclined plates (1105), and one end of one side of the corresponding two groups of movable frames (1104) is commonly fixedly connected to a spring pull rod (1106).

8. A metal stamping surface treatment device as claimed in claim 7, characterized in that: One end of two groups of rotating rods (1102) is internally threadedly connected with a screw rod (1108), and one end of the other two groups of rotating rods (1102) and the two groups of screw rods (1108) are fixedly connected to a clamping shell (1103), and the two groups of vertical plates (1107) are respectively fixedly connected to the two ends of the upper surface of the drain rack (12).

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