Automobile part milling tool

Abstract

The utility model relates to the technical field of milling tools, and discloses an automobile part milling tool which comprises a bottom plate, a motor is fixedly connected to the right side of the top end of the bottom plate, the output end of the motor is rotationally connected with a first short plate, the front side of the first short plate is rotationally connected with a long plate, the left side of the long plate is rotationally connected with a fixing block, and the inner wall of the fixing block is fixedly connected with a long rod. The left side of the long rod is fixedly connected with a second supporting plate, the bottom end of the second supporting plate is fixedly connected with the top end of the bottom plate, the left side of the long rod is fixedly connected with a first short strip, the front side and the rear side of the first short strip are rotationally connected with second short plates, and the left side of each second short plate is rotationally connected with a third short plate. According to the utility model, the motor drives the short plate I to rotate, and the long rod moves to drive the short strip I to move left and right, so that the clamping plate starts to rotate to play a role in fixing an automobile part, the shape precision of a processed product can reach a design standard, the part can be quickly mounted on a milling tool and clamped, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of milling tooling, in particular to a milling tooling for automobile parts. Background Art

[0002] The development of automobiles can be divided into several important stages. Initially, automobiles were designed and manufactured by steam locomotive engineers for experiments and demonstrations. With the advancement of the industrial revolution and technological progress, automobiles became a means of transportation for ordinary people. Today, automobile technology is developing rapidly, and new concepts such as environmentally friendly cars, electric cars and smart cars have emerged.

[0003] Auto parts are the various units that make up the entire car and the products that serve the car. There are many types of these parts. With the expansion of the automobile market, auto parts manufacturers are also developing rapidly. Auto parts can be divided into parts, assemblies, components and assemblies. Parts refer to single finished products that have not undergone any assembly process. Assemblies are parts that are assembled into one body and play the role of a single part. Components are composed of parts and have a motion relationship, but cannot play the role of a separate complete mechanism. Assembly is an assembly unit that can play the role of a mechanism alone.

[0004] The purpose of automotive parts milling tooling is to fix automotive parts for milling processing. It can accurately position the parts in the processing position, enable the milling tool to cut according to the predetermined path, and improve the accuracy and consistency of processing. However, if the parts are not firmly fixed and clamped, the parts will be displaced and deformed under the cutting force of the tool. At the same time, the parts will be thrown out by the cutting force of the tool, which will cause serious safety hazards to operators and surrounding equipment. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an automobile parts milling tool, which aims to improve the problem in the existing technology that the accessories are not firmly fixed and clamped, and the accessories will be displaced and deformed under the cutting force of the tool. At the same time, the accessories will be thrown out by the cutting force of the tool, which will cause serious safety hazards to the operators and surrounding equipment.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a milling tool for automobile parts, comprising a base plate, a motor is fixedly connected to the right side of the top of the base plate, the output end of the motor is rotatably connected to a short plate 1, the front side of the short plate 1 is rotatably connected to a long plate, the left side of the long plate is rotatably connected to a fixed block, the inner wall of the fixed block is fixedly connected to a long rod, the left side of the long rod is fixedly connected to a supporting plate 2, the bottom end of the supporting plate 2 is fixedly connected to the top of the base plate, the left side of the long rod is fixedly connected to a short strip 1, The front and rear sides of the short strip one are rotatably connected to the short plate two, the left side of the short plate two is rotatably connected to the short plate three, the left side of the short plate three is rotatably connected to the splint, the bottom end of the splint is fixedly connected to the short strip two, the middle part of the short strip two is fixedly connected to the left side of the connecting plate, the left side of the connecting plate is fixedly connected to the support column two, the bottom end of the support column two is fixedly connected to the top end of the base plate, and automobile accessories are engaged between the adjacent left sides of the splints. A cleaning mechanism is provided on the left side of the top end of the base plate, and the cleaning mechanism is used for cleaning after milling.

[0007] As a further description of the above technical solution:

[0008] The cleaning mechanism includes a top end of a support plate 1 that is slidably connected to the bottom end of the automotive accessory, a fan is provided at the top left end of the support column 2, the front and rear sides of the support plate 1 are fixedly connected to a baffle 1, a plurality of holes are provided on the inner side of the support plate 1, the left end of the support plate 1 is rotatably connected to a rotating shaft, the top end of the rotating shaft is fixedly connected to a baffle 2, the front end of the rotating shaft is fixedly connected to a knob, and the bottom end of the support plate 1 is fixedly connected to a collection tank.

[0009] As a further description of the above technical solution:

[0010] The bottom end of the bottom plate is fixedly connected with an anti-slip pad, and the right end of the long rod is fixedly connected with a protective block.

[0011] As a further description of the above technical solution:

[0012] The left side of the splint is fixedly connected with a protection block, and the top of the second support column is fixedly connected with a water tank.

[0013] As a further description of the above technical solution:

[0014] A valve is provided at the top of the water storage tank, and a second liquid outlet pipe is connected to the top of the left side of the water storage tank.

[0015] As a further description of the above technical solution:

[0016] The rear side of the top end of the base plate is fixedly connected with a milling device, the front side of the top end of the milling device is rotatably connected with a connecting column, and the front side of the connecting column is fixedly connected with a milling tool.

[0017] As a further description of the above technical solution:

[0018] The left end of the rear side of the collecting tank is connected to a liquid outlet pipe 1, and the left side of the top end of the bottom plate is fixedly connected to a storage tank.

[0019] As a further description of the above technical solution:

[0020] The bottom end of the collecting trough is fixedly connected to a support column 1, and the bottom end of the support column 1 is fixedly connected to the left side of the top end of the bottom plate.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the motor drives the short plate to rotate, and the long plate moves with the fixed block. When the long rod moves, it will move the short bar left and right, and finally the splint starts to rotate, which plays the role of fixing the auto parts. It can ensure that the parts maintain their original shape during the processing, so that the shape accuracy of the processed products meets the design standards, improves the processing safety, and can quickly install the parts on the milling tool and clamp them, thereby improving work efficiency.

[0023] 2. In the present invention, by turning the knob to make baffle plate 2 block the left end of support plate 1, and then by starting the fan, the debris is blocked by baffle plates 1 and 2 and enters the collection tank from the hole, which plays a role in cleaning the debris. Timely cleaning of debris can ensure the normal operation of various components of the machine tool, improve the stability of the equipment, and also improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front perspective view of a base plate of an automobile parts milling tool proposed in the utility model;

[0025] Figure 2 This is a top view of an automobile part milling tool proposed in the utility model;

[0026] Figure 3 This is a side view of a milling device of an automobile parts milling tool proposed in the utility model;

[0027] Figure 4 This is a diagram showing the connection plate of a milling tool for automobile parts proposed in the utility model;

[0028] Figure 5 This is a schematic diagram of a support plate for an automobile parts milling tooling proposed by the present invention.

[0029] Legend:

[0030] 1. Bottom plate; 2. Cleaning mechanism; 201. Support plate 1; 202. Knob; 203. Baffle 1; 204. Baffle 2; 205. Rotating shaft; 206. Collecting tank; 207. Fan; 208. Hole; 3. Motor; 4. Short plate 1; 5. Long plate; 6. Protective block; 7. Fixed block; 8. Support plate 2; 9. Connecting plate; 10. Short plate 2; 11. Water storage tank; 12. Milling device; 13. Connecting column; 14. Milling tool; 15. Support column 1; 16. Anti-slip pad; 17. Short plate 3; 18. Clamp; 19. Storage tank; 20. Liquid outlet pipe 1; 21. Short strip 1; 22. Long rod; 23. Short strip 2; 24. Protective block; 25. Valve; 26. Liquid outlet pipe 2; 27. Auto parts; 28. Support column 2. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Please see the attached Figure 1 , Attachment Figure 2 and attached Figure 4The utility model provides an embodiment: a milling tool for automobile parts, including a base plate 1, a motor 3 is fixedly connected to the right side of the top of the base plate 1, the output end of the motor 3 is rotatably connected to a short plate 4, and the front side of the short plate 4 is rotatably connected to a long plate 5, and the motor 3 is fixedly connected to the right side of the top of the base plate 1, and the output end of the motor 3 is connected to the short plate 4 in a rotatable manner, so that the short plate 4 can move with the rotation of the motor 3, and the front part of the short plate 4 is connected to the long plate 5 in a rotatable manner, so that the long plate 5 can rotate with the short plate 4, and the left side of the long plate 5 is rotatably connected to a fixed block 7, and the inner wall of the fixed block 7 is fixedly connected to a long rod 22, and the left fixed connection of the long rod 22 It is connected to a support plate 2 8, the bottom end of the support plate 2 8 is fixedly connected to the top of the bottom plate 1, the left part of the long plate 5 is connected to the fixed block 7 by rotation, the inner wall of the fixed block 7 is fixedly connected to the long rod 22, the left end of the long rod 22 is fixedly connected to the support plate 2 8, the bottom end of the support plate 2 8 is connected to the top of the bottom plate 1 by a fixed manner, ensuring the stability of the entire structure, the left side of the long rod 22 is fixedly connected to a short strip 1 21, the front and rear sides of the short strip 1 21 are rotatably connected to the short plate 2 10, the left side of the short plate 2 10 is rotatably connected to the short plate 3 17, the left side of the short plate 3 17 is rotatably connected to the splint 18, the left part of the long rod 22 is fixedly connected to the short strip 1 21, the short The front and rear sides of the strip 1 21 are connected to the short plate 2 10 by rotating, so that the short plate 2 10 can rotate on the short strip 1 21, and the left part of the short plate 2 10 is connected to the short plate 3 17 by rotating, and the left part of the short plate 3 17 is also connected to the splint 18 by rotating, so that it can realize the clamping function. The bottom end of the splint 18 is fixedly connected to the short strip 2 23, and the middle part of the short strip 23 is fixedly connected to the left side of the connecting plate 9. The left side of the connecting plate 9 is fixedly connected to the support column 2 28, and the bottom end of the support column 28 is fixedly connected to the top of the bottom plate 1. The bottom end of the splint 18 is fixedly connected to the short strip 23, and the middle part of the short strip 23 is fixed to the left side of the connecting plate 9. The two parts are connected in a fixed manner, the left part of the connecting plate 9 is fixedly connected to the supporting column 28, and the bottom end of the supporting column 28 is connected to the top of the bottom plate 1 in a fixed manner, which further enhances the stability of the entire structure. The left adjacent parts of the splint 18 are engaged with automobile accessories 27. A cleaning mechanism 2 is provided on the left side of the top of the bottom plate 1. The cleaning mechanism 2 is used for cleaning after milling. The adjacent parts on the left side of the splint 18 are engaged with automobile accessories 27. These accessories can be fixed in appropriate positions by the splint 18. A cleaning mechanism 2 is provided on the left side of the top of the bottom plate 1. This cleaning mechanism 2 is specifically used to clean the workpiece after the milling process to ensure that the surface of the workpiece is clean and tidy.

[0033] Specifically, the motor 3 is fixedly connected to the right side of the top of the bottom plate 1, and the output end of the motor 3 is connected to the short board 1 4 by rotation, so that the short board 1 4 can move with the rotation of the motor 3, and the front part of the short board 1 4 is connected to the long board 5 by rotation, so that the long board 5 can rotate with the short board 1 4, and the left part of the long board 5 is connected to the fixed block 7 by rotation, which ensures the stability of the long board 5. The bottom part of the support plate 2 8 is connected to the top part of the bottom plate 1 by a fixed manner to ensure the stability of the support plate 2 8. The left part of the long rod 22 is fixedly connected to the short strip 1 21, and the front and rear sides of the short strip 1 21 are connected to the short board 2 10 by rotation. The left side of the short plate 2 10 is connected to the short plate 3 17 by rotation, and the left side of the short plate 3 17 is also connected to the splint 18 by rotation, so that the splint 18 can rotate with the short plate 3 17. The bottom end of the support column 2 28 is connected to the top end of the base plate 1 in a fixed manner, ensuring the stability of the support column 28. The left side of the splint 18 is engaged with the adjacent splint 18 with the automobile accessory 27, so that the automobile accessory 27 can be fixed by the splint 18. A cleaning mechanism 2 is provided on the left side of the top end of the base plate 1. This cleaning mechanism 2 is mainly used for cleaning after milling to ensure the cleaning and maintenance of the equipment.

[0034] Please see the attached Figure 1 , Attachment Figure 3 and attached Figure 5, the cleaning mechanism 2 includes a top of a support plate 201 that is slidably connected to the bottom end of the automobile accessory 27, a fan 207 is provided on the left top end of the support column 28, and the front and rear sides of the support plate 201 are fixedly connected with a baffle 203, and the top of the support plate 201 is slidably connected to the bottom end of the automobile accessory 27 to ensure the movement between the two. A fan 207 is provided on the left top end of the support column 28 to provide necessary airflow support during the cleaning process. In order to further enhance the stability of the cleaning mechanism 2, the front and rear sides of the support plate 201 are fixedly connected with a baffle 203. These baffles 203 not only play a protective role, but also prevent debris generated during the cleaning process from splashing around. A plurality of holes 208 are provided on the inner side of the support plate 201. The left end of the support plate 201 is rotatably connected to a rotating shaft 205, and the top of the rotating shaft 205 is fixedly connected to a baffle 204. The rotating shaft 205 The front end of the support plate 201 is fixedly connected with a knob 202, and the bottom end of the support plate 1 201 is fixedly connected with a collecting groove 206. The inner side of the support plate 1 201 is provided with a plurality of holes 208. These holes 208 not only reduce the weight of the support plate 1 201, but also can be used for cleaning function. The left end of the support plate 1 201 is rotatably connected with a rotating shaft 205, and the top end of the rotating shaft 205 is fixedly connected with a baffle 204. In this way, the position of the baffle 204 can be adjusted by rotating the rotating shaft 205 to adapt to different cleaning needs. A knob 202 is fixedly connected to the front end of the rotating shaft 205, and the rotation of the rotating shaft 205 can be easily controlled by the knob 202, so as to achieve precise adjustment of the baffle 204. In order to collect debris generated during the cleaning process, the bottom end of the support plate 1 201 is fixedly connected with a collecting groove 206, which can conveniently collect debris and facilitate subsequent processing and cleaning work;

[0035] Specifically, the top of the support plate 201 is slidably connected to the bottom end of the automobile accessory 27, ensuring smooth relative movement between the two. In order to provide necessary airflow support during the cleaning process and thus improve the cleaning efficiency, a fan 207 is provided at the top left side of the support column 28. The front and rear sides of the support plate 201 are fixedly connected with a baffle 203. The baffle 203 not only plays a protective role to prevent debris generated during the cleaning process from splashing around, but also enhances the stability of the entire cleaning mechanism 2. The hole 208 not only effectively reduces the weight of the support plate 201, but also provides additional convenience for the cleaning function.

[0036] Please see the attached Figure 1 , Attachment Figure 3 and attached Figure 4, the left end of the rear side of the collection tank 206 is connected with a liquid outlet pipe 20, the left end of the top of the bottom plate 1 is fixedly connected to a storage tank 19, and the bottom end of the bottom plate 1 is fixedly connected to an anti-skid pad 16. The left end of the rear side of the collection tank 206 is connected with a liquid outlet pipe 20 to ensure that the liquid can be discharged from the collection tank 206. The left side of the top of the bottom plate 1 is fixedly connected to a storage tank 19 for storing the discharged cleaning liquid. In order to increase stability, the bottom end of the bottom plate 1 is also fixedly connected with an anti-skid pad 16. These anti-skid pads 16 can effectively prevent the equipment from sliding during use, ensuring safety and stability of use. The bottom end of the support column 15 is also fixedly connected to the left side of the top of the bottom plate 1 , can withstand greater weight and pressure, the right end of the long rod 22 is fixedly connected to a protective block 6, the bottom end of the collecting tank 206 is fixedly connected to a support column 15, the bottom end of the support column 15 is fixedly connected to the left side of the top of the bottom plate 1, and the right end of the long rod 22 is fixedly connected to a protective block 6, which can protect the equipment and prevent damage to the equipment due to accidental collision or friction during use. The bottom end of the collecting tank 206 is fixedly connected to a support column 15, which can not only provide additional supporting force to ensure the stability of the collecting tank 206, but also prevent liquid from leaking to other parts of the equipment, keeping the equipment clean and hygienic;

[0037] Specifically, a liquid outlet pipe 20 is connected to the left end of the rear side of the collection tank 206. The liquid outlet pipe 20 ensures that the liquid can be smoothly discharged from the collection tank 206. A storage tank 19 is fixedly connected to the top left side of the bottom plate 1. This storage tank 19 is specifically used to store the discharged cleaning liquid, making the entire cleaning process more orderly and neat. To further increase the stability of the equipment, an anti-slip pad 16 is also fixedly connected to the bottom end of the bottom plate 1 to ensure safety and stability during use.

[0038] Please see the attached Figure 1 , Attachment Figure 3 and attached Figure 5The top rear side of the base plate 1 is fixedly connected to a milling device 12, the top front side of the milling device 12 is rotatably connected to a connecting column 13, and the front side of the connecting column 13 is fixedly connected to a milling tool 14. A milling device 12 is fixedly connected to the top rear side of the base plate 1, and the top front side of the milling device 12 is connected to the connecting column 13 by rotation. The front side of the connecting column 13 is fixedly connected to the milling tool 14 for precise milling operations. The left side of the splint 18 is fixedly connected to a protective block 24, and the top of the support column 28 is fixedly connected to the top of the support column 28. The water tank 11 is fixedly connected, and a valve 25 is provided at the top of the water tank 11. The left top of the water tank 11 is connected to the second liquid outlet pipe 26. The left part of the splint 18 is fixedly connected to the protective block 24 to ensure that the splint 18 is protected during the milling process. The top part of the second support column 28 is fixedly connected to the water tank 11. The top part of the water tank 11 is provided with a valve 25 to control the outflow of water in the water tank 11. The left top part of the water tank 11 is connected to the second liquid outlet pipe 26 to drain the water smoothly and clean the debris.

[0039] Specifically, the milling device 12 is fixedly connected to the rear side of the top of the bottom plate 1, and the front side of the top is connected to the connecting column 13 by rotation. The front part of the connecting column 13 is fixedly connected to the milling tool 14, so that accurate milling operations can be carried out conveniently. A protective block 24 is fixedly connected to the left side of the splint 18 to ensure that the splint 18 is protected during the milling process to prevent the debris generated during the milling process from damaging the splint 18. The top part of the support column 28 is fixedly connected to the water tank 11, which stores water. A valve 25 is provided at the top portion of the trough 11 to control the outflow of water in the water storage tank 11 to ensure that the milling tool 14 and the workpiece surface can be cleaned in time during the milling process. The left top portion of the water storage tank 11 is connected to a liquid outlet pipe 26 to discharge the water smoothly and effectively clean the debris generated during the milling process to ensure the smooth progress of the milling operation. The model of the motor 3 is: DCS-140, the model of the fan 207 is: BFT4-72, and the model of the milling device 12 is: LMC3000.

[0040] Working principle: The motor 3 drives the rotation of the short plate 1 4, and the rotation of the short plate 1 4 will drive the long plate 5 to rotate, and the long plate 5 will drive the fixed block 7 to move, and the fixed block 7 will drive the long rod 22 to move left and right. When the long rod 22 moves, it will drive the short strip 1 21 to move left and right. The movement of the short strip 1 21 will drive the short plates 2 10 on both sides to rotate, and at the same time pull the short plate 3 17 to rotate. Due to the fixation of the short strip 2 23, the splint 18 will also start to rotate, causing the protective block 24 on its left end to start to move closer or farther away, playing the role of fixing the auto part 27, which can ensure that the part maintains its original shape during the processing, so that the shape accuracy of the processed product meets the design standard, improves the processing safety, and at the same time, the part can be quickly installed on the milling tool and clamped, thereby improving work efficiency.

[0041] When milling is completed, debris will be generated. By turning the knob 202, the baffle 204 will block the left end of the support plate 1 201, and then by starting the fan 207, the debris will enter the collection tank 206 from the hole 208 under the obstruction of the baffle 1 203 and the baffle 204, which plays a role in cleaning the debris. If the debris is not cleaned in time, it may be mixed between the tool and the accessories. When the tool performs the next cutting, these debris will affect the feed depth of the tool, resulting in deviations in the size of the processed accessories. Cleaning the debris in time can ensure the normal operation of each component of the machine tool, improve the stability of the equipment, and also improve production efficiency.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A milling tool for automobile parts, comprising a base plate (1), characterized in that: The top right side of the bottom plate (1) is fixedly connected to a motor (3), the output end of the motor (3) is rotatably connected to a short plate (4), the front side of the short plate (4) is rotatably connected to a long plate (5), the left side of the long plate (5) is rotatably connected to a fixed block (7), the inner wall of the fixed block (7) is fixedly connected to a long rod (22), the left side of the long rod (22) is fixedly connected to a support plate (8), the bottom end of the support plate (8) is fixedly connected to the top of the bottom plate (1), the left side of the long rod (22) is fixedly connected to a short strip (21), the front and rear sides of the short strip (21) are both rotatably connected to the short plate (10), the short The left side of plate 2 (10) is rotatably connected to short plate 3 (17), and the left side of short plate 3 (17) is rotatably connected to a splint (18), and the bottom end of the splint (18) is fixedly connected to short strip 2 (23), and the middle part of short strip 2 (23) is fixedly connected to the left side of connecting plate (9), and the left side of connecting plate (9) is fixedly connected to support column 2 (28), and the bottom end of support column 2 (28) is fixedly connected to the top of base plate (1), and automobile accessories (27) are engaged between adjacent left sides of the splint (18), and a cleaning mechanism (2) is provided on the left side of the top of base plate (1), and the cleaning mechanism (2) is used for cleaning after milling.

2. The milling tool for automobile parts according to claim 1, characterized in that: The cleaning mechanism (2) includes a top end of a support plate (201) slidably connected to a bottom end of an automobile accessory (27); a fan (207) is provided at the top left end of the support column (28); the front and rear sides of the support plate (201) are fixedly connected to a baffle (203); a plurality of holes (208) are provided on the inner side of the support plate (201); the left end of the support plate (201) is rotatably connected to a rotating shaft (205); the top end of the rotating shaft (205) is fixedly connected to a baffle (204); the front end of the rotating shaft (205) is fixedly connected to a knob (202); and the bottom end of the support plate (201) is fixedly connected to a collecting tank (206).

3. The milling tool for automobile parts according to claim 1, characterized in that: The bottom end of the base plate (1) is fixedly connected to an anti-slip pad (16), and the right end of the long rod (22) is fixedly connected to a protective block (6).

4. The milling tool for automobile parts according to claim 1, characterized in that: The left side of the clamping plate (18) is fixedly connected to a protection block (24), and the top of the second support column (28) is fixedly connected to a water tank (11).

5. The milling tool for automobile parts according to claim 4, characterized in that: A valve (25) is provided at the top of the water storage tank (11), and a second liquid outlet pipe (26) is connected to the top of the left side of the water storage tank (11).

6. The milling tool for automobile parts according to claim 1, characterized in that: The rear side of the top end of the base plate (1) is fixedly connected to a milling device (12), the front side of the top end of the milling device (12) is rotatably connected to a connecting column (13), and the front side of the connecting column (13) is fixedly connected to a milling tool (14).

7. The milling tool for automobile parts according to claim 2, characterized in that: The left end of the rear side of the collecting tank (206) is connected to a liquid outlet pipe (20), and the left side of the top end of the bottom plate (1) is fixedly connected to a storage tank (19).

8. The milling tool for automobile parts according to claim 2, characterized in that: The bottom end of the collecting trough (206) is fixedly connected to a support column (15), and the bottom end of the support column (15) is fixedly connected to the left side of the top end of the bottom plate (1).

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