TWI693115B - Molding apparatus and method for forming treadmill frame - Google Patents

Abstract

A molding apparatus and method for forming treadmill frame. The molding apparatus includes a base unit with a top surface and a bottom notch, a top unit, and a molding unit disposed in between. The top unit is movable in toward and away from the base unit. The molding unit has a main body and a pressing mold. When the top unit is moved toward the base unit, the molding unit is driven to be accommodated in the bottom notch such that a bottom surface of the pressing mold is close to a bottom surface of the bottom notch. When the top unit is moved away from the base unit, the molding unit is driven away from the bottom notch. When a metal plate is clamped by the molding unit, use the top unit to drive the molding unit toward the bottom notch for bending the metal plate.

Description

Frame forming device and method

The invention relates to a metal plate bending device, in particular to a hollow tubular frame forming device and forming method.

General metal plate processing machinery for making hollow tubes, such as Taiwan Patent No. M276635, I622435 and other patent cases, use the cooperation of most rollers, which can gradually roll the metal plate and bend it into a The required cross-sectional shape.

Although the above rolling mechanisms have been widely used, because of the need to gradually roll the metal sheet, the length of the production line is longer, and a larger plant space is required. It is not very practical for objects with small finished lengths. Furthermore, the production capacity of this roll forming is slower and the production cost is higher.

Therefore, an object of the present invention is to provide a frame forming device with a simple structure and a small overall volume.

Another object of the present invention is to provide a frame forming method with simple steps and a small overall volume of equipment structure.

Therefore, the frame forming device of the present invention includes a base unit, a top seat unit and a stamping unit. The base unit includes a top surface and a sink recessed by the top surface, the sink includes a first groove side intersecting the top surface, a groove bottom surface intersecting the first groove side, and A second groove side that intersects the bottom surface of the groove and is opposite to the first groove side is jointly defined. The top base unit is disposed opposite to the base unit, and can approach or move away from the base unit. The stamping unit is disposed between the base unit and the top seat unit, and includes a main body, and a stamper that can be abutted or opened relative to the main body. The stamper has a bottom end surface relative to the bottom surface of the groove, An outer end surface that intersects the bottom end surface and corresponds to the side surface of the first groove, and when the top seat unit approaches the base unit, the stamper unit can be driven to fit into the sink groove, and the bottom end surface approaches On the bottom surface of the groove, when the top base unit moves away from the base unit, the stamper unit can be driven to move out of the sink.

The frame forming method of the present invention is suitable for bending a metal sheet into a hollow tubular frame. The metal sheet has a first part and a second part intersecting with the first part. The bending method includes the following steps : (A) Prepare a bending device, the bending device includes a base unit, a top seat unit and a stamping unit, the base unit includes a top surface, and a sink recessed by the top surface , The sink consists of a side of the first groove intersecting the top surface, a bottom surface of the groove intersecting the side surface of the first groove, and A second groove side that intersects the bottom surface of the groove and is opposite to the first groove side is jointly defined, the top surface is in contact with the first groove side to form an abutment portion, the top seat unit and the base unit Relatively arranged, and can approach or away from the base unit, the stamping unit is arranged between the base unit and the top base unit, and includes a main body, and a can be abutted or opened relative to the main body The stamper has a bottom end surface opposite to the bottom surface of the groove, an outer end surface intersecting the bottom end surface and corresponding to the side surface of the first groove. (B) The stamper operating the stamper unit is opened relative to the main body. (C) The first part of the metal plate is interposed between the main body and the stamper, and the second part is interposed between the top surface and the bottom end surface. (D) The stamper operating the stamper unit abuts against the main body, and the first portion is sandwiched between the main body and the stamper. (E) The top seat unit approaches the base unit, and drives the stamping unit to fit into the sink groove, and makes the bottom end surface approach the bottom surface of the groove, the middle portion of the second portion resists The backrest is a supporting point, and the second part is bent relative to the first part, and the frame is formed. (F) The top base unit is away from the base unit, and the stamping unit is moved out of the sink. (G) The stamper operating the stamper unit is opened relative to the main body. (H) Take out the frame.

The effect of the present invention is that when the stamping unit clamps a metal plate, and the top seat unit is used to drive the stamping unit toward the sink, the metal plate is connected to the side of the first groove with the top surface The location is a point of resistance, which can achieve the purpose of bending the metal plate. The overall structure is simple, the volume is small, and the overall process is simple. The preparation of the equipment is quite easy.

1: metal sheet

101: Part One

102: Part Two

103: Turning Point

2: frame

100: molding device

10: Base unit

11: Base

12: Front seat

121: top surface

13: Rear seat

23: Strike group

30: stamping unit

31: Subject

311: the first end

312: Second end

313: Main mold surface

314: outer surface

315: pilot hole

32: stamping

321: positioning end

322: Active side

14: sink

141: Side of the first slot

142: groove bottom

143: Side of second slot

15: Guide rod

16: Guide slide group

161: Rolling parts

17: Rear buffer group

18: abutment

19: Front buffer group

20: Top seat unit

21: Top seat

22: Suppression group

221: pivot joint

222: Pressed parts

223: rear end

224: front buffer

323: Die surface

324: Outer end face

325: bottom end face

33: screw

40: elastic unit

41: Compression spring

50: Buckle

51: Positioning seat

52: pivot joint

53: buckle

54: Buckle

60: Pushing unit

61: pressure cylinder

62: Push block

X: first axis

Y: Second axis

Z: third axis

Other features and functions of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: FIG. 1 is a perspective combined view of an embodiment of the frame forming device of the present invention; FIG. 2 is a view of the embodiment An exploded perspective view; FIG. 3 is a schematic view of a stereoscopic operation of the embodiment, illustrating a state in which a stamper unit is located at an ascending position and a stamper is opened relative to a main body; FIG. 5 is another schematic view of the operation of the embodiment, illustrating the state where the stamper unit is in the ascending position and the stamper abuts against the main body; FIG. 6 is another schematic diagram of the operation of the embodiment, illustrating the stamper unit Located at a lowered position and bending a metal plate; FIG. 7 is a schematic plan view of FIG. 6; FIG. 8 is yet another schematic view of the operation of this embodiment, illustrating the operation of a fastener and making the stamper opposite When the main body is in an open state; and FIG. 9 is another operation schematic diagram of the embodiment, illustrating a schematic diagram of taking out a frame.

1 and 2, an embodiment of the frame forming apparatus 100 of the present invention is suitable for bending a metal sheet 1 into a hollow tubular exercise bike frame 2, the metal sheet 1 of this embodiment has been preformed, and The cross-sectional shape perpendicular to a first axis X is almost U It has an inverted L-shaped first part 101, a second part 102 intersecting with the first part 101, and a turning part 103 between the first part 101 and the second part 102.

The molding device 100 includes a base unit 10, a top base unit 20, a stamping unit 30, an elastic unit 40, a buckle 50, and a pushing unit 60.

The base unit 10 extends along the first axis X, and includes a base 11, a front seat 12 fixed to the base 11, a second axis Y along the second axis perpendicular to the first axis X and the The front seats 12 are spaced apart and fixed to the rear seat 13 of the base 11, a sink 14 between the front seat 12 and the rear seat 13, most of which are provided on the base 11 and between the front seat 12 and the rear seat 13 The guide rod 15 in between, a guide slide group 16 disposed on the rear seat 13, a rear buffer group 17 disposed on the rear seat 13, and a front buffer group 19 disposed on the front seat 12. The front seat 12 has a top surface 121. The sink groove 14 is recessed by the top surface 121. The sink groove 14 includes a first groove side 141 intersecting the top surface 121 and a first groove side 141 intersecting the first groove side 141. The groove bottom surface 142 and a second groove side surface 143 that intersect the groove bottom surface 142 and are opposite to the first groove side surface 141 are defined together. The first groove side surface 141 is disposed on the front seat 12, the groove bottom surface 142 is disposed on the base 11, and the second groove side surface 143 is disposed on the rear seat 13. The guide rods 15 extend into the sink 14 and extend along a third axis Z perpendicular to the first axis X and the second axis Y. The sliding group 16 has a plurality of rolling elements 161 corresponding to the second groove side 143. The rear buffer group 17 The front buffer group 19 is made of a buffer material (for example, rubber). An abutting portion 18 is formed at the junction between the top surface 121 and the first groove side surface 141.

The top base unit 20 is disposed opposite to the base unit 10 along the third axis Z, and can approach or move away from the base unit 10 along the third axis Z. The top base unit 20 has a top base 21, a pressing group 22 installed at the bottom of the top base 21 and corresponding to the sink 14, and a pressing group 22 disposed on the side of the pressing group 22 along the second axis Y and corresponding The bumper group 23 of the front buffer group 19. The pressing group 22 has a plurality of pivoting seats 221 spaced along the first axis, a plurality of pressing members 222 respectively pivotally connected to the pivoting seats 221, and a pressing member 222 installed on one side of the pressing members 222 and corresponding to the The rear end portion 223 of the guide slide group 16 and a front buffer member 224 opposite to the rear end portion 223 along the second axis and installed on one side of the pressing members 222.

The stamper unit 30 is disposed between the base unit 10 and the top base unit 20 and includes a main body 31 and a stamper 32 that can abut or open relative to the main body 31. The main body 31 has a first end 311, a second end 312 opposite to the first end 311 along the first axis X, and a main mold surface 313 extending from the first end 311 to the second end 312 , An outer surface 314 opposite to the main mold surface 313 and abutting against the second groove side surface 143, and a plurality of guide holes 315 for the guide rods 15 to penetrate respectively, the main mold surface 313 of this embodiment cooperates with the The cross-sectional shape of the frame 2 is formed into a circular arc shape. The stamp 32 has a positioning end 321 that is positioned relative to the first end 311, a movable end 322 that is opposite to the positioning end 321 along the first axis X and opposite to the second end 312, and a set The position end 321 extends to the movable end 322 and is opposite to the stamping surface 323 of the main die surface 313, an outer end surface 324 opposite to the stamping surface 323 and corresponding to the first groove side surface 141, and an intersection with the Between the stamping surface 323 and the outer end surface 324 and relative to the bottom end surface 325 of the groove bottom surface 142, the movable end 322 can abut or move away from the second end 312. The positioning end 321 is locked to the first end 311 of the main body 31 by using a plurality of screws 33, and the positioning end 321 can abut or move away from the first end 311.

The elastic unit 40 is installed between the base unit 10 and the main body 31 of the stamping unit 30. The elastic unit 40 of this embodiment has a plurality of compression springs 41. The elastic force of the compression springs 41 provides constant pressure to the stamping unit 30. The tendency to move out relative to the sink 14 is maintained.

The buckle 50 is mounted on the die unit 30 and has a positioning seat 51 mounted on the second end 312 of the main body 31, a pivoting member 52 pivotally connected to the positioning seat 51, and a pivoting connection The buckle member 53 of the member 52 and a buckle hook 54 installed on the movable end 322 of the stamping die 32 can operate the pivoting member 52 to drive the buckle member 53 into or out of the buckle hook 54.

The pushing unit 60 is installed on the base unit 10 and has a pressure cylinder 61 fixed to the base 11 and a push block 62 driven by the pressure cylinder 61. The push block 62 can be along the stamp 32 The outer end surface 324 slips.

In order to further understand the effect produced by the cooperation of the components of the present invention, the use of technical means, and the expected effect, the following is described below, and I believe that I can have a more in-depth and specific understanding of the present invention.

As shown in FIG. 1 again, when the overall assembly of the frame forming apparatus 100 of the present invention is completed, and the bending forming operation of the frame 2 is to be performed, the forming method includes the following steps:

Step 1: With reference to FIGS. 3 and 4, operate the top base unit 20 away from the base unit 10. At this time, the pressing unit 22 does not press the stamping unit 30, but uses the elastic force of the elastic unit 40 The action causes the die unit 30 to move out of the sink 14.

Step 2: With reference to FIGS. 3 and 4, first operate the pivoting member 52 of the buckle 50 to pivot relative to the positioning seat 51, and drive the buckle member 53 to detach from the buckle 54. Then, The stamper 32 that operates the stamper unit 30 is opened relative to the main body 31. At this time, a gap is formed between the main body 31 and the stamper 32, and the stamper 32 also moves above the top surface 121.

Step 3: With reference to FIGS. 3 and 4, insert the metal sheet 1 between the main body 31 and the stamper 32, and place a part of the first portion 101 on the main mold surface 313 and the stamper surface 323 The second portion 102 is interposed between the top surface 121 and the bottom end surface 325.

Step 4: With reference to FIG. 5, first operate the stamper 32 of the stamper unit 30 against the main body 31, and make the first part 101 sandwiched between the main body 31 and the stamper 32, and then operate The pivoting member 52 drives the buckle member 53 to produce an inset buckle relative to the buckle 54. At this time, the stamp 32 moves from above the top surface 121 to above the sink 14. There is a distance between the main body 31 and the bottom surface 142 of the groove, and there is also a distance between the abutment bar group 23 and the front buffer group 19.

Step 5: With reference to FIGS. 6 and 7, operate the top base unit 20 toward the base unit 10, and use the pressing group 22 to push the stamping unit 30 into the sink 14 and make the bottom The end surface 325 approaches the bottom surface 142 of the groove. During the process of inserting the die unit 30 into the sink 14, the second portion 102 of the metal sheet 1 uses the abutment portion 18 as a supporting point, and the second portion 102 is produced relative to the first portion 101 Bend and form the frame 2. During the process of inserting the stamping unit 30 into the sink 14, the main body 31 is guided by the guide rods 15, and the guide slide group 16 provides smooth sliding of the main body 31, so that the stamping unit 30 Z moves down smoothly along this third axis. At this time, the elastic unit 40 is pressed by the stamping unit 30 and contains the spring back force.

Step 6: With reference to FIG. 8, first operate the top base unit 20 to move away from the base unit 10, and the stamping unit 30 is subjected to the elastic force of the elastic unit 40 (see FIG. 4) and the guide rods The guide of 15 can be smoothly removed from the sink 14. During the removal of the die unit 30 from the sink 14, the main body 31 is subjected to the guide The guide of the rod 15 and the sliding group 16 provide smooth sliding of the main body 31 (refer to FIG. 7 ), so that the stamping unit 30 can move up along the third axis Z smoothly.

Step 7: With reference to FIG. 8, operating the pivoting member 52 causes the buckle member 53 to disengage from the buckle 54, continue, and then operate the stamp 32 to open relative to the main body 31.

Step 8: With reference to FIGS. 9 and 2, start the pressure cylinder 61 of the pushing unit 60, and use the pushing block 62 to push the frame 2 to move along the first axis X, which is convenient for the operator to remove the frame 2 from the The mold unit 30 is drawn out.

Therefore, the present invention utilizes the frame forming device 100 with a simple structure and a small overall volume, and the above-mentioned continuous operation steps, to form the frame by bending the metal sheet 1 at one time, without the need to install a production line. The space is small, and the one-time bending capacity is faster, which can reduce production costs.

It is worth mentioning that, as shown in FIGS. 6 and 7, when the top base unit 20 approaches the base unit 10, the abutment bar group 23 is used to abut the front buffer group 19 and the pressing group The rear end portion 223 of 22 abuts against the rear buffer group 17 and the front buffer 224 against the metal sheet 1 to avoid impacting the service life of the molding device due to impact and avoiding the frame 2 Impact marks on the surface. In addition, the pressing member 222 of the pressing group 22 is pivotally connected to the pivoting seats 221, then the rear end portion 223 of the pressing group 22 abuts against the rear buffer group 17 and the front buffer member 224 To the When the metal plate 1 is used, the pressing members 222 slightly pivot relative to the pivoting seats 221 to absorb vibration and extend the service life of the forming device.

In summary, the overall structure of the frame forming device of the present invention is simple and the volume is small. The steps of the forming method are simple and the operation is easy. It can produce unexpected effects and can indeed achieve the purpose of the invention.

However, the above are only examples of the present invention, and should not be used to limit the scope of the present invention. Any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still classified as This invention covers the patent.

1: metal sheet

101: Part One

102: Part Two

103: Turning Point

2: frame

100: molding device

10: Base unit

11: Base

12: Front seat

121: top surface

13: Rear seat

14: sink

15: Guide rod

16: Guide slide group

161: Rolling parts

17: Rear buffer group

18: abutment

19: Front buffer group

20: Top seat unit

21: Top seat

31: Subject

311: the first end

312: Second end

313: Main mold surface

314: outer surface

315: pilot hole

32: stamping

321: positioning end

322: Active side

323: Die surface

324: Outer end face

325: bottom end face

33: screw

40: elastic unit

41: Compression spring

50: Buckle

51: Positioning seat

52: pivot joint

53: buckle

54: Buckle

22: Suppression group

221: pivot joint

222: Pressed parts

223: rear end

224: front buffer

23: Strike group

30: stamping unit

60: Pushing unit

61: pressure cylinder

62: Push block

X: first axis

Y: Second axis

Z: third axis

Claims (9)

A frame forming device, including: A base unit includes a top surface and a sink recessed by the top surface, the sink includes a first groove side intersecting the top surface and a groove bottom surface intersecting the first groove side, And a side surface of the second groove that intersects the bottom surface of the groove and is opposite to the side surface of the first groove; A pedestal unit, which is arranged opposite to the base unit, and can be approached or separated from the base unit; and A stamping unit is disposed between the base unit and the top seat unit, and includes a main body, and a stamper that can be abutted or opened relative to the main body, the stamper has a bottom relative to the bottom surface of the groove An end face, an outer end face that intersects the bottom end face and corresponds to the side surface of the first groove, and when the top seat unit approaches the base unit, the stamper unit can be driven into the sink groove and the bottom end face Approaching the bottom surface of the groove, when the top base unit moves away from the base unit, the stamping unit can be driven to move out of the sink. The frame forming device according to claim 1, wherein the main body of the stamping unit has a first end and a second end opposite to the first end along a first axis, the stamper further has A positioning end that generates positioning relative to the first end, and a movable end that is opposite to the positioning end and relative to the second end along the first axis, the movable end can be abutted or relative to the second end Far away, the frame forming device further includes a buckle mounted on the die unit, the buckle has a positioning seat mounted on the second end, a pivoting piece pivotally connected to the positioning seat, and a connection to the A buckle part of the pivoting part and a buckle hook installed at the movable end, operating the pivoting part can drive the buckle part to engage or disengage relative to the buckle hook. The frame forming device according to claim 1, further comprising an elastic unit installed between the base unit and the stamping unit, and the elastic force of the elastic unit provides the stamping unit to keep moving out relative to the sink the trend of. The frame forming device according to claim 1, wherein the base unit further includes a base, a front seat fixed to the base, a rear seat fixed to the base, and most of the bases are interposed between the base The guide bar between the front seat and the rear seat, the sink groove is interposed between the front seat and the rear seat, the guide bars extend into the sink groove, the side of the first groove is provided on the front seat, the first The side surfaces of the two grooves are arranged on the rear seat. The main body of the stamping unit has a plurality of guide holes for the guide rods to pass through. The frame forming device according to claim 4, wherein the base unit further has a guide slide group provided on the rear seat, the guide slide group has a plurality of sides corresponding to the second groove and provides smooth sliding of the main body Rolling pieces. The frame forming device according to claim 1, wherein the base unit further has a buffer group made of a buffer material, and the top seat unit further has an abutment group corresponding to the buffer group, the top seat When the unit approaches the base unit, the abutment bar group abuts the buffer group. The frame forming device according to claim 1, further comprising a pushing unit mounted on the base unit, the pushing unit having a pressure cylinder and a pushing block driven by the pressure cylinder. A frame forming method is suitable for bending a metal sheet into a hollow tubular frame. The metal sheet has a first part and a second part intersecting with the first part. The bending method includes the following steps: (A) Prepare a bending device, which includes a base unit, a top base unit and a stamping unit, the base unit includes a top surface, and a sink recessed by the top surface, The sink is defined by a first groove side intersecting the top surface, a groove bottom surface intersecting the first groove side, and a second groove side intersecting the bottom surface of the groove opposite to the first groove side As a result, an abutment is formed at the junction between the top surface and the side surface of the first groove, the top seat unit is disposed opposite to the base unit, and can approach or move away from the base unit, and the stamping unit is disposed Between the base unit and the top base unit, and includes a main body, and a stamper that can be abutted or opened relative to the main body, the stamper has a bottom end surface relative to the bottom surface of the groove, an intersection with the The bottom end surface and corresponding to the outer end surface of the side surface of the first groove; (B) The stamper operating the stamper unit is opened relative to the main body; (C) The first part of the metal sheet is interposed between the main body and the stamper, and the second part is interposed between the top surface and the bottom end surface; (D) The stamper operating the stamper unit abuts against the main body, and the first portion is sandwiched between the main body and the stamper; (E) The top seat unit approaches the base unit, and drives the die unit to fit into the sink, and the bottom end surface approaches the bottom surface of the groove, the second portion uses the abutment portion as Supporting points and bending the second part relative to the first part and forming the frame; (F) The top base unit is away from the base unit, and the stamping unit is removed from the sink; (G) The stamper operating the stamper unit is opened relative to the main body; (H) Take out the frame. The frame forming method according to claim 8, wherein the bending device prepared in step (A) further includes a buckle mounted on the die unit, the buckle having a positioning seat mounted on the main body , A pivot member pivotally connected to the positioning seat, a buckle member connected to the pivot member, and a buckle hook installed on the stamper, in step (B), the pivot member is first operated and Drive the buckle to disengage from the buckle, and then operate the stamper of the stamper unit to open relative to the main body. In step (D), the stamper of the stamper unit is first operated Resist, and then operate the pivoting member and drive the buckle member to produce an inset buckle relative to the buckle hook.

Images