Open tooling

Abstract

The present invention relates to a propping tool, comprising a fixed handle assembly, a swing handle assembly, a push rod assembly, a push rod guide seat and a cover plate, a push rod hole is arranged in the radial direction of the side wall of the push rod guide seat, the push rod assembly is arranged in the push rod hole, the fixed handle assembly comprises a fixed handle and a handle fixing plate, the swing handle assembly comprises a swing handle, a fixed pin and a push device, the swing handle and the fixed handle are arranged on the outside of the handle fixing plate, the push rod guide seat is fixed on the inside of the handle fixing plate, the cover plate is fixed on the push rod guide seat, the push device is arranged on the fixed pin and is located in the cavity of the push rod guide seat, the swing handle rotates to drive the push device, the push device drives the push rod assembly to move in the push rod hole, and the maximum height of the push rod assembly being lifted is higher than the outer surface of the push rod guide seat. The present invention is simple, fast and efficient to operate, and does not damage the surface of the workpiece when splitting the workpiece.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical tools, and in particular relates to a spreading tool. Background Art

[0002] There are many existing products that need to process coaxial circular holes on two separate parts. The commonly used processing method is to assemble the upper and lower parts of the parts that need to be processed with circular holes together before processing the circular holes. After the circular holes are processed, the upper and lower parts of the circular holes are separated. At present, most methods of separating the upper and lower parts are to directly break them apart by hand, or smash them apart with tools such as hammers, or pry them apart with tools such as lifters. These separation methods are easy to damage the surface of the processed parts during the separation process, resulting in unnecessary waste of scrapped parts, and also affecting production efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a spreading tool that is simple, fast and efficient to operate, which can quickly separate the parts that have been processed together without causing any damage or scratches to the surface of the processed parts, thereby reducing the scrap rate.

[0004] The present invention is implemented in this way, providing a spreading tool, including a fixed handle assembly, a swing handle assembly, a push rod assembly, a push rod guide seat and a cover plate, a cavity is arranged in the middle part of the push rod guide seat, and a push rod hole is arranged in the radial direction of the side wall of the push rod guide seat, the push rod assembly is arranged in the push rod hole, the fixed handle assembly includes a fixed handle and a handle fixing plate fixed together, the swing handle assembly includes a swing handle, a fixing pin and a pushing device fixed together, the swing handle and the fixed handle are arranged on the outer side of the handle fixing plate, the push rod guide seat is fixed on the inner side of the handle fixing plate, the cover plate is fixed on the push rod guide seat, one end of the fixing pin passes through the handle fixing plate, the push rod guide seat and the cover plate, and is restricted on the outer side of the cover plate, the pushing device is arranged on the fixing pin and is located in the cavity of the push rod guide seat, the swing handle rotates to drive the pushing device, and the pushing device drives the push rod assembly to move in the push rod hole, and the maximum height of the push rod assembly being lifted is higher than the outer surface of the push rod guide seat.

[0005] Furthermore, the pushing device is an eccentric wheel, and the rotating eccentric wheel drives the push rod assembly to move up and down in the push rod hole.

[0006] Furthermore, the push rod assembly includes a push rod seat and a push rod head fixed together, the push rod head is arranged on the top of the push rod seat, a push rod seat base plate is arranged on the bottom of the push rod seat, a push rod seat groove is arranged on the push rod seat base plate, a push rod spring is sleeved on the push rod seat, the push rod spring is compressed between the inner wall of the push rod guide seat and the push rod seat base plate, and the eccentric wheel abuts against the lower part of the push rod seat and is located in the push rod seat groove.

[0007] Furthermore, the putter seat is made of a material with high hardness, and the putter head is made of a soft material.

[0008] Furthermore, a retaining spring is arranged on the fixing pin, and the retaining spring restricts one end of the fixing pin to the outside of the cover plate.

[0009] Furthermore, the outer diameter of the handle fixing plate is greater than the outer diameter of the push rod guide seat.

[0010] Furthermore, the outer diameter of the push rod guide seat is not larger than the inner diameter of the expanded workpiece.

[0011] Furthermore, the lowest position of the push rod assembly in the push rod hole is not higher than the outer surface of the push rod guide seat.

[0012] Furthermore, a ball handle is provided at the end of the fixed handle, and a ball handle is also provided at the end of the swing handle.

[0013] Compared with the prior art, the opening tool of the present invention comprises a fixed handle assembly, a swing handle assembly, a push rod assembly, a push rod guide seat and a cover plate. When in use, the push rod guide seat is inserted into the circular hole of the workpiece to be separated, and the swing handle is pushed to push the push rod assembly to move outward from the push rod hole of the push rod guide seat, and the push rod assembly and the push rod guide seat mutually generate an outward separation force, so that the workpiece to be separated is separated from the circular hole up and down or left and right. The present invention is simple to operate, especially for the frequent separation of parts on both sides of the circular hole, it has high work efficiency, and does not damage the surface of the workpiece during separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of a preferred embodiment of the propping tool of the present invention in a closed state;

[0015] Figure 2 for Figure 1 A three-dimensional schematic diagram of the support tooling in an open state;

[0016] Figure 3 for Figure 2 A three-dimensional schematic diagram from another angle;

[0017] Figure 4 for Figure 1A three-dimensional schematic diagram of a fixed handle assembly in FIG.

[0018] Figure 5 for Figure 3 A three-dimensional schematic diagram of the swing handle assembly, the push rod assembly, and the push rod guide seat in the combined state;

[0019] Figure 6 for Figure 5 A three-dimensional schematic diagram of the swing handle assembly and the push rod assembly in the combined state. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] Please also refer to Figure 1 , Figure 2 as well as Figure 3 As shown, a preferred embodiment of the opening tool of the present invention includes a fixed handle assembly 1, a swing handle assembly 2, a push rod assembly 3, a push rod guide seat 4 and a cover plate 5.

[0022] A cavity 41 is provided in the middle of the push rod guide seat 4. A push rod hole 42 is provided in the radial direction of the side wall of the push rod guide seat 4. The push rod assembly 3 is provided in the push rod hole 42.

[0023] Please also refer to Figure 4 , Figure 5 and Figure 6 As shown, the fixed handle assembly 1 includes a fixed handle 11 and a handle fixing plate 12 fixed together, and a ball handle 13 is arranged at the end of the fixed handle 11. The swing handle assembly 2 includes a swing handle 21 fixed together, a fixing pin 22 and a pushing device, and a ball handle 13 is also arranged at the end of the swing handle 21. The purpose of arranging the ball handle 13 is to increase the friction of the hand when pushing the fixed handle 11 and the swing handle 21, so as to prevent the palm from being loosened from the fixed handle 11 and the swing handle 21 during the force application process.

[0024] The swing handle 21 and the fixed handle 11 are arranged on the outside of the handle fixing plate 12, and the push rod guide seat 4 is fixed to the inside of the handle fixing plate 12 by the fixing plate bolts 14. The cover plate 5 is fixed to the push rod guide seat 4 by the cover plate bolts 51 and is located on the outside of the push rod guide seat 4. One end of the fixing pin 22 passes through the handle fixing plate 12, the push rod guide seat 4 and the cover plate 5, and is restricted to the outside of the cover plate 5. The push device is arranged on the fixing pin 22 and is located in the cavity 41 of the push rod guide seat 4. A retaining spring 23 is arranged on the fixing pin 22, and the retaining spring 23 restricts one end of the fixing pin 22 to the outside of the cover plate 5.

[0025] The swing handle 21 drives the push device to rotate around the fixed pin 22 at the same time, and the swing handle 21 and the fixed handle 11 can be separated from each other or close to each other. The push device abuts against the bottom of the push rod assembly 3, and the push device drives the push rod assembly 3 to move up and down in the push rod hole 42. The maximum height of the push rod assembly 3 is higher than the outer surface of the push rod guide seat 4.

[0026] In this embodiment, the pushing device is an eccentric wheel 24. There is an angle between the axis of the swing handle 21 and the symmetry axis of the eccentric wheel 24. The rotating eccentric wheel 24 drives the push rod assembly 3 to move up and down in the push rod hole 42. When the swing handle 21 and the fixed handle 11 are separated from each other at the maximum position, as shown in FIG. Figure 2 As shown, the eccentric wheel 24 drives the push rod assembly 3 to move to the highest position in the push rod hole 42. When the swing handle 21 and the fixed handle 11 are close to each other and are in the minimum position, as shown in FIG. Figure 1 As shown, the eccentric wheel 24 drives the push rod assembly 3 to move to the lowest position in the push rod hole 42, at which time, the push rod assembly 3 is lower than the outer surface of the push rod guide seat 4. The lowest position of the push rod assembly 3 in the push rod hole 42 is not higher than the outer surface of the push rod guide seat 4.

[0027] Please refer to Figure 6 As shown, the push rod assembly 3 includes a push rod seat 31 and a push rod head 32 fixed together. The push rod head 32 is arranged on the top of the push rod seat 31. A push rod seat bottom plate 33 is arranged at the bottom of the push rod seat 31. A push rod seat groove 34 is arranged on the push rod seat bottom plate 33, and the push rod seat groove 34 is located at the bottom of the push rod seat bottom plate 33.

[0028] A push rod spring 35 is sleeved on the push rod seat 31. The push rod spring 35 is compressed between the inner wall of the push rod guide seat 4 and the push rod seat bottom plate 33. The push rod spring 35 has a return effect on the push rod assembly 3. The eccentric wheel 24 abuts against the lower part of the push rod seat 31 and is located in the push rod seat groove 34.

[0029] The push rod seat 31 is made of a material with high hardness, and the push rod head 32 is made of a soft material. Because the push rod head 32 directly contacts the inner wall of the separated workpiece, the use of hard materials is easy to damage the workpiece, and the use of soft materials is to protect the workpiece.

[0030] For ease of use, the outer diameter of the handle fixing plate 12 is larger than the outer diameter of the push rod guide seat 4, and the outer diameter of the push rod guide seat 4 is not larger than the inner diameter of the workpiece to be stretched.

[0031] In actual use, the sizes of the fixed handle 11, the push rod assembly 3, the push rod guide seat 4, the cover plate 5 and the eccentric wheel 24 can be adjusted appropriately according to factors such as the inner diameter of the circular hole of the workpiece to be separated and the separation force required by the workpiece, so as to be suitable for use by different workpieces and different operators.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A support tool, characterized in that: The invention comprises a fixed handle assembly, a swing handle assembly, a push rod assembly, a push rod guide seat and a cover plate, wherein a cavity is arranged in the middle part of the push rod guide seat, and a push rod hole is arranged in the radial direction of the side wall of the push rod guide seat, and the push rod assembly is arranged in the push rod hole, and the fixed handle assembly comprises a fixed handle and a handle fixing plate fixed together, and the swing handle assembly comprises a swing handle, a fixing pin and a pushing device fixed together, and the swing handle and the fixed handle are arranged on the outer side of the handle fixing plate, and the push rod guide seat is fixed on the inner side of the handle fixing plate, and the cover plate is fixed on the push rod guide seat, and one end of the fixing pin passes through the handle fixing plate, the push rod guide seat and the cover plate, and is restricted on the outer side of the cover plate, and the pushing device is arranged on the fixing pin and is located in the cavity of the push rod guide seat, and the swing handle rotates to drive the pushing device, and the pushing device drives the push rod assembly to move in the push rod hole, and the push rod assembly is pushed up to the maximum The eccentric wheel is against the lower part of the push rod seat and is located in the groove of the push rod seat. The outer diameter of the push rod guide seat is not larger than the inner diameter of the workpiece to be stretched. When in use, the push rod guide seat is inserted into the circular hole of the workpiece to be separated, and the swing handle is pushed to push the push rod assembly to move outward from the push rod hole of the push rod guide seat. The push rod assembly and the push rod guide seat generate an outward separation force for each other, so that the workpiece to be separated is separated from the circular hole up and down or left and right.

2. The expansion tool as claimed in claim 1, characterized in that: The push rod seat is made of a material with high hardness, and the push rod head is made of a soft material.

3. The expansion tool as claimed in claim 1, characterized in that: A clamping spring is arranged on the fixing pin, and the clamping spring limits one end of the fixing pin to the outer side of the cover plate.

4. The expansion tool as claimed in claim 1, characterized in that: The outer diameter of the handle fixing plate is greater than the outer diameter of the push rod guide seat.

5. The expansion tool as claimed in claim 1, characterized in that: The lowest position of the push rod assembly in the push rod hole is not higher than the outer surface of the push rod guide seat.

6. The expansion tool as claimed in claim 1, characterized in that: A ball handle is arranged at the end of the fixed handle, and a ball handle is also arranged at the end of the swing handle.

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