TWI594865B - Method for forming a plastic support housing of shoe sole - Google Patents

Description

Method for forming plastic support shell of sole

The present invention provides a method of forming a plastic support shell for a sole that is related to the manner in which the plastic is formed.

Foamed plastics are widely used in daily necessities, transportation, industrial production and even aviation machinery because of their low density, high specific strength, strong energy absorption and good sound insulation.

Foamed plastics vary in process depending on the application field. In the application of the sole, the foamed plastic is used as the lining in the forming process of the sole material in the process of the sole, and the foamed plastic is injected into the sole material. After that, it becomes a part of the sole, and since the foamed plastic is a part of the sole, the foamed plastic for the sole must be formed to match the configuration of the sole, and in general, the method of forming the foamed plastic must be vacuumed. In addition to the semi-finished product in the form of a thin shell, it is necessary to take out the semi-finished product for secondary processing of cutting, trimming, and opening, and the foamed plastic is formed into a thin shell form by the plastic forming, so that the foamed plastic is processed. In the secondary processing, the positioning is difficult, and the processing efficiency is poor and the efficiency is low. In view of this, the inventors have devoted themselves to research and further conceived. After many research and development experiments, the invention finally invented a plastic support for the sole. The method of forming the shell.

The invention provides a method for forming a plastic support shell of a sole, the main purpose of which is to improve the processing precision of the general foaming plastic forming method with poor precision and low efficiency.

To achieve the foregoing objective, the present invention provides a method for forming a plastic support shell for a sole, comprising: sequentially providing a sheet into a forming mold step, providing a formed sheet and positioning the formed sheet on a forming mold; a softening step of heating the shaped sheet in the forming mold to soften the shaped sheet; the vacuum forming step, the forming mold is closed and evacuated, and after cooling, a blister member is obtained. The blister member is formed into a thin shell shape, and one convex body portion and a plurality of hole corresponding portions are formed on one surface, and the other surface is a recessed space, and one side of the convex body portion and the hole corresponding portion is defined as The outer surface is an inner surface, and each of the hole corresponding portions has a cutting edge, the cutting edge has a cutting angle of less than 45 degrees; and the periphery of the blister has residual material; Step, the blister member is placed in a cutting die, the cutting die comprises a cutting fixed die and a cutting corresponding die, the cutting fixed die has a cutting fixed die, the shape of the cutting fixed die is completely opposite The shape of the space of the blister member is such that the blister member is completely attached to the surface of the cutting fixed mold, and the cutting corresponding mold is disposed relative to the cutting fixed mold, and the cutting corresponding mold has a cutting corresponding mold cavity The cutting corresponding volume of the cavity is larger than the volume of the cutting fixed die; the cutting edge and the hole position step, the cutting corresponding mode is close to the cutting fixed mold, Cutting the corresponding cavity can only contact the cutting edge of the absorbing member, and the cutting corresponding mold and the cutting die are pressed against the residual material of the absorbing member, and when the cutting corresponds to the cavity contact After the plastic part is abutted, the cutting corresponds to the cutting edge corresponding to the cutting edge to cut the plastic part, the cutting corresponding mold correspondingly cuts the fixed mold to cut the residual material, so that the remaining material of the plastic part is cut off The cutting edge is cut to generate a hole position; the trimming mold step is arranged to position the plastic part in a trimming die, the trimming die comprises a carrying die and a stamping die, the carrying die has a bearing cavity The shape of the bearing cavity is shaped corresponding to the outer shape of the blister member, so that the blister member is completely affixed to the bearing cavity by its outer surface, and the bearing die is adjacent to the bearing cavity to form a limiting wall. The limiting wall has a limiting edge, the limiting wall has an area smaller than an outer surface of the blister member, and accordingly, after the absorbing member is received in the bearing cavity, the blister member protrudes outside The limiting mold; and the pressing mold has a supporting portion, the supporting portion has a supporting edge, and the pressing mold is correspondingly placed The inner surface of the blister member and the position of the supporting edge of the dies corresponding to the position of the limiting edge of the supporting die, the supporting edge and the limiting edge can be positioned oppositely on the outer and inner faces of the blister member And the blister member is stably positioned by the carrier mold and the stamper; and the mechanical arm trimming step is performed by a mechanical arm along the support edge and the position of the limiting edge, and the trimming can be performed after trimming A plastic support shell for the sole is obtained.

The invention improves the processing stability by performing a vacuum blister forming step, a cutting edge material and a hole positioning step, and a mechanical arm trimming step in the mold; and the bearing die and the stamper of the trimming die are passed during the trimming step of the robot arm Abutting against the outer and inner faces of the blister member, respectively, and the limiting edge and the supporting edge of the supporting die and the pressing die relatively define the boundary of the trimming, thereby absorbing the absorbing member in addition to being stably positioned. The mechanical arm that is trimmed outside the plastic part is subjected to the limit wall The limitation and the guiding of the support portion can stably and accurately trim the appearance contour of the demand, thereby reducing the processing difficulty and simultaneously improving the processing efficiency and the product yield.

"this invention"

10‧‧‧Forming mould

11‧‧‧First Forming Mold

12‧‧‧Second forming mould

13‧‧‧ telescopic seat

14‧‧‧ Forming mold

141‧‧‧ Body Forming Department

142‧‧‧ hole corresponding to the forming section

143‧‧‧ cutting edge

20‧‧‧ cutting mode

21‧‧‧ Cutting the fixed mold

211‧‧‧Cut fixed mold

22‧‧‧Cut corresponding mode

221‧‧‧Cut the corresponding cavity

30‧‧‧Sticker

31‧‧‧bearing mode

311‧‧‧ bearing cavity

312‧‧‧Limited wall

313‧‧‧Limited margin

32‧‧‧Molding

321‧‧‧Support

322‧‧‧Support edge

40‧‧‧ Robotic arm

A‧‧‧ formed sheet

A‧‧‧ plastic parts

A1‧‧‧ Main Body

A2‧‧‧ Hole Position Correspondence Department

A21‧‧‧ cutting edge

A3‧‧‧ space

A4‧‧‧ surplus material

A'‧‧‧Sole plastic support shell

B‧‧‧heating device

Θ‧‧‧ cut off sharp corners

(I) ‧‧‧Provide sheet into the forming step

(II) ‧‧‧Sheet softening step

(III) ‧‧‧vacuum forming steps

(IV) ‧‧‧Incision mode

(V) ‧‧‧ Cutting edge and hole steps

(VI) ‧‧‧

(VII) ‧ ‧ mechanical arm trimming steps

1 is a flow chart showing the steps of a method for forming a plastic support shell of a sole according to the present invention.

2 is a schematic view showing a step of providing a sheet into a forming mold in a method of forming a plastic support shell for a sole according to the present invention.

3 is a schematic view showing a softening step of a sheet in a method for forming a plastic support shell of a sole according to the present invention.

4 is a schematic view showing a vacuum forming step in a method of forming a plastic support shell for a sole according to the present invention.

Fig. 5 is a schematic view showing the steps of completing the vacuum forming process in the method for forming the plastic support shell of the sole of the present invention.

Fig. 6 is a schematic view showing the step of cutting into a cutting die in the method for forming a plastic support shell of a sole according to the present invention.

Fig. 7 is a schematic view showing the steps of cutting the edge material and the hole position in the method for forming the plastic support shell of the sole of the present invention.

Figure 8 is a partially enlarged schematic view of Figure 7.

FIG. 9 is a schematic view showing the steps of cutting the edge material and the hole position in the forming method of the plastic support shell of the sole of the present invention.

FIG. 10 is an exploded perspective view showing the step of trimming the mold in the forming method of the plastic support shell of the sole of the present invention.

Figure 11 is a schematic view showing the steps of the trimming die in the method of forming the plastic support shell of the sole of the present invention.

12 is a schematic view showing a step of trimming a mechanical arm in a method for forming a plastic support shell of a sole according to the present invention; Figure.

FIG. 13 is a schematic view showing the step of trimming the arm in the forming method of the plastic support shell of the sole of the present invention.

In order to enable the reviewing committee to have a better understanding and understanding of the purpose, features and effects of the present invention, the following is a detailed description of the following: a preferred embodiment of the forming method of the plastic support shell of the sole of the present invention. For example, as shown in FIGS. 1 to 13, the method includes the steps of: providing a sheet into a forming mold step (I), providing a forming sheet a and positioning the forming sheet a on a forming mold 10, the forming mold 10 A first forming die 11 and a second forming die 12 are included. The first forming die 11 is opposite to the second forming die 12, and the first forming die 11 has a telescopic force displaceable relative to the second forming die 12. The seat 13 is provided with a forming die 14 on the telescopic seat 13. The forming die 14 includes a plurality of hole-shaped corresponding forming portions 142 formed on the main body forming portion 141. Each of the holes corresponding to the forming portion 142 has a cutting forming edge 143. The cut-off forming edge 143 has a sharp cut-off angle θ which is an angle of less than 45 degrees; and the formed sheet a is fixed to the first forming die 11 of the forming die 10 and Located in the first forming mold 11 Between the die 14 and the second forming die 12, as shown in FIG. 2; a sheet softening step (II) between the first forming die 11 and the second forming die 12 of the forming die 10 a heating device B heats the shaped sheet a to soften the formed sheet a, as shown in FIG. 3; a vacuum forming step (III), the second forming mold 12 of the forming mold 10 and the first A forming die 11 is closed and evacuated, and the telescopic seat 13 faces the side of the second forming die 12. Aiming at the displacement of the formed sheet a, finally, the forming die 14 on the telescopic seat 13 is abutted against the pressed sheet a, so that the formed sheet a is closely attached to one side of the forming die 14 and The forming mold core 14 is formed as shown in FIG. 4; then, the second forming mold 12 is far away from the first forming mold 11, and after cooling, the plastic forming member A corresponding to the forming mold core 14 is obtained. The plastic part A is formed into a thin shell shape corresponding to the forming mold core 14 and is formed with a convex main body portion A1 and a plurality of hole corresponding portions A2, and the other surface becomes a recessed space A3, and defines a convex body. One side of the portion A1 and the hole corresponding portion A2 is an outer surface, and the other surface is an inner surface, and each of the hole corresponding portions A2 has a cutting edge A21 having a cutting sharp angle θ of less than 45 degrees. Generally, the area of the formed sheet a is generally larger than the area of the forming die 14 when forming, so that the blister A does not contact the main body forming portion 141 and each of the hole corresponding forming portions 142 after vacuum forming. The periphery is defined as the remainder A4, as shown in Figure 5; into the cutting step (IV), the suction The plastic part A is placed in a cutting die 20, and the cutting die 20 includes a cutting fixed die 21 and a cutting corresponding die 22, and the cutting fixed die 21 has a cutting fixed die 211, and the cutting fixed die 211 is completely shaped. Corresponding to the shape of the space A3 of the blister member A, the blister member A can be completely attached to the surface of the cutting fixed mold core 211, and the cutting corresponding mold 22 is disposed relative to the cutting fixed mold 21. The cutting corresponding mold 22 has a cutting corresponding mold cavity 221, the volume of the cutting corresponding mold cavity 221 is larger than the volume of the cutting fixed mold core 211, as shown in Figures 6, 7, and 8; cutting edge material and hole position step (V) The cutting corresponding mold 22 is adjacent to the cutting fixed mold 21, and the cutting corresponding mold cavity 221 can only contact the cutting edge A21 of the plastic part A, and between the cutting corresponding mold 22 and the cutting fixed mold 21 Then, the residual material A4 of the plastic part A is clamped, and when the cutting corresponding cavity 221 contacts the plastic part A, the cutting corresponding hole 221 corresponds to the cutting edge A21. The blister A is cut, and the cutting corresponding mold 22 is correspondingly cut by the fixed mold 21 to cut the residual material A4, so that the remaining material A4 of the blister A is cut off, and the cutting edge A21 is cut to produce a hole position. As shown in FIG. 9 , the trimming mold step (VI) is used to position the plastic part A to a trimming die 30. The trimming die 30 includes a carrying die 31 and a stamper 32. The bearing cavity 311 has a shape corresponding to the outer shape of the plastic part A, so that the plastic part A is completely positioned against the bearing cavity 311, and the carrying die 31 is positioned. Adjacent to the bearing cavity 311, a limiting wall 312 is formed. The limiting wall 312 has a limiting edge 313. The limiting wall 312 has an area smaller than an outer surface of the blister A, thereby absorbing the absorbing member. After the A is placed in the bearing cavity 311, the outer surface of the plastic part A protrudes from the limiting wall 31; and the pressing die 32 has a supporting portion 321 having a supporting edge 322. 32 corresponds to the inner surface of the plastic part A, and the position of the supporting edge 322 of the stamper 32 corresponds to the position of the limiting edge 313 of the supporting die 31, and the supporting edge 322 and the limiting edge 313 can Positioned oppositely on the outer and inner faces of the blister A, and the blister A is stably positioned 2 by the carrier die 31 and the die 32, as shown in FIGS. 10 and 11; and the arm trimming step (VII), trimming the position of the support edge 313 along the support edge 322 through a mechanical arm 40, and the plastic support shell A' of the sole can be obtained after trimming, as shown in FIGS.

The above is the forming process of the method for forming the plastic support shell of the sole of the present invention. From the above, the present invention is applicable to the vacuum forming step (III), the cutting edge and the hole step (V), and the arm trimming step (VII). At the same time, the sheet a or the blister A is stably positioned through the mold, thereby enabling the above steps to be performed in a stable state, improving the stability of each process, reducing the processing difficulty, and improving the processing efficiency. ; It should be noted that, in the vacuum forming step (III), the hole position on the forming die 14 corresponds to the configuration of the forming portion 142, so that the forming member A has a cutting edge A21 as long as it is formed. Further, when the cutting mold 211 corresponding to the corresponding shape and the cutting corresponding hole 221 which can only contact the cutting edge A21 are arranged, the hole position can be directly generated and the remaining material A4 can be cut when the cutting mold 20 is closed. It is simpler; more importantly, since the plastic part A is a thin shell structure, if the plastic part A is not stably positioned, it is difficult to carry out subsequent processing, and the present invention transmits the load bearing mold 31 and the pressure through the trimming mold 30. The die 32 abuts against the outer and inner faces of the blister A, respectively, and the limiting edge 313 of the carrier die 31 and the die 32 and the supporting edge 322 define a boundary of the trimming edge, thereby absorbing the blister A In addition to the stable positioning, the mechanical arm 40 which is trimmed from the outside of the blister A can be stably and accurately trimmed according to the limitation of the limiting wall 312 and the guiding portion 321 , thereby reducing the desired contour. Processing difficulty, and can simultaneously improve processing efficiency and product yield.

(I) ‧‧‧Provide sheet into the forming step

(II) ‧‧‧Sheet softening step

(III) ‧‧‧vacuum forming steps

(IV) ‧‧‧Incision mode

(V) ‧‧‧ Cutting edge and hole steps

(VI) ‧‧‧

(VII) ‧ ‧ mechanical arm trimming steps

Claims (3)

A method for forming a plastic support shell for a sole, comprising: sequentially providing a sheet into a forming mold step, providing a formed sheet and positioning the formed sheet on a forming mold; and a sheet softening step, located in the forming mold The formed sheet is heated to soften the formed sheet; in the vacuum forming step, the forming mold is closed and vacuumed, and after cooling, a blister member is formed, and the blister member is formed into a thin shell shape. And forming a convex body portion and a plurality of hole corresponding portions on one side, and forming a space for the recess on the other surface, and defining one side having the convex body portion and the hole corresponding portion as the outer surface and the other surface as the inner surface. And each of the hole corresponding portions has a cutting edge, the cutting edge has a cutting angle of less than 45 degrees; and the periphery of the blister has residual material; and the cutting step is performed, and the blister is placed Inserting into a cutting die, the cutting die comprises a cutting fixed die and a cutting corresponding die, the cutting fixed die has a cutting fixed die, the shape of the cutting fixed die completely corresponds to the shape of the space of the plastic part The blister member is completely attached to the surface of the cutting fixed mold, and the cutting corresponding mold is disposed relative to the cutting fixed mold, and the cutting corresponding mold has a cutting corresponding mold cavity, and the cutting corresponding cavity has a larger volume than the dies. Cutting the volume of the fixed mold; cutting the edge material and the hole position step, the cutting corresponding mold is close to the cutting fixed mold, the cutting corresponding cavity can only contact the cutting edge against the plastic part, and the cutting corresponding mold and the Between the cutting dies, the remaining material of the blister member is abutted, and when the cutting corresponding cavities are in contact with the blister member, the cutting corresponding to the cavities corresponding to the cutting edge cuts the blister member The cutting corresponding mold correspondingly cuts the fixed mold to cut the residual material, so that the remaining material of the plastic absorbing member is cut off, and the cutting edge is cut to produce a hole position; The trimming mold step is to position the plastic part in a trimming die, the trimming die comprises a carrying die and a stamping die, the carrying die has a bearing cavity, and the shape of the bearing cavity corresponds to the plastic molding The outer shape of the piece is shaped such that the blister member is completely positioned against the bearing cavity by the outer surface thereof, and the bearing die is adjacent to the bearing cavity to form a limiting wall, and the limiting wall has a limiting edge. The area of the limiting wall is smaller than the outer area of the blister member, and after the absorbing member is received in the bearing cavity, the outer surface of the blister member protrudes from the limiting wall; and the pressing mold has a support The support portion has a supporting edge, and the pressing die is correspondingly disposed on the inner surface of the blister member, and the supporting edge position of the pressing die corresponds to the position of the limiting edge of the supporting die, and the supporting edge and the supporting edge The limiting edge can be positioned oppositely on the outer and inner faces of the blister member, and the blister member is stably positioned by the carrier die and the stamper; and the mechanical arm trimming step is performed through a mechanical arm The support edge and the position of the limit edge are trimmed, and the plastic support of the sole can be obtained after trimming Shell. The method for forming a plastic support shell for a sole according to claim 1, wherein the forming mold comprises a first forming mold and a second forming mold, the first forming mold is opposite to the second forming mold, and The first forming die has a telescopic seat displaceable relative to the second forming die, and the telescopic seat is provided with a forming die, and the forming die comprises a forming portion of the main body forming portion corresponding to the forming portion, each of the holes The position-corresponding forming portion has a cutting forming edge having a sharp cutting sharp angle, the cutting sharp angle being an angle of less than 45 degrees; and the forming sheet is fixed on the first forming mold and located Forming the mold core of the first forming mold and the second forming mold; and in the vacuum forming step, the second forming mold and the first forming mold are closed and evacuated, and the telescopic seat faces the second forming The direction of the mold is displaced toward the formed sheet, and finally the Forming the mold on the telescopic seat to abut and press the formed sheet so that the formed sheet is in close contact with one side of the forming mold and forming the formed mold; then, the second forming mold is far away The first forming mold, after being cooled, obtains a blister member corresponding to the forming mold core, and the blister member is formed into a thin shell shape corresponding to the forming mold core, and a main body portion and a plurality of hole positions are formed on one side. And the other side becomes a space of the recess, and defines one side having the convex main body portion and the corresponding portion of the hole position as the outer surface, and the other surface is the inner surface, and each of the hole corresponding portions has a cutting edge, respectively. The cutting edge has a cutting angle of less than 45 degrees. The method for forming a plastic support shell for a sole according to the second aspect of the invention, wherein the sheet softening step is to heat the formed sheet between the first forming mold and the second forming mold by a heating device. The formed sheet is softened by heat.