JPH044883B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an apparatus for directly molding a shoe sole on the upper of a shoe, which is provided with one or more molding stations, and a molding unit of the molding station. The present invention relates to a type in which the mold half is made up of a laterally movable mold half, a height-adjustable shoe mold and a bottom pressure base, and the mold half is fixed to a heating frame.

BACKGROUND OF THE INVENTION Such devices have a single molding station as well as a number of molding stations arranged one after the other and are known as rotary bodies.
In this rotary body, a series of molding stations are arranged on the outer peripheral surface of a rotary table.

In the molding station, a hollow hole for the sole to be injection molded onto the upper of the shoe is formed by means of both laterally movable mold halves, a shoe mold reaching from above, and a bottom pressure plate reaching from below. A space is formed. By injection molding the sole directly onto the upper of the shoe, manufacturing time is significantly reduced.

However, such devices are used more effectively if the installation time is also significantly reduced and the manufacturing time is significantly reduced.

In the known device, the mold halves are fixed to the heating frame via screws. However, it is often necessary to change the molds in such molding equipment. In other words, if the shoe sizes are different, the mold halves are screwed to the heating frame, so that when the four fixing screw molds required for both mold halves are removed, they can be disassembled and replaced with a new one. The disadvantage is that a relatively large amount of time has to be spent on retightening the mold during assembly.

Problem to be Solved by the Invention The object of the invention is to provide a method of fixing mold halves in a heating frame which can be disassembled and fixed again in a very short time.

Means for solving the problem According to the first aspect of the present invention, the problem is solved by:
The back of each mold half is provided with one longitudinally extending bolt in each mold half which engages in a suitable notch in the heating frame, and the front part of the mold half is provided with a bolt extending longitudinally of the heating frame. A through hole is provided extending perpendicularly to the longitudinal direction of the mold half aligned with the hole, and a fixing bolt with a laterally projecting pin is arranged in said hole and in the through hole, said pin is adapted to engage positively into a recess in a bushing inserted into a bore in the heating frame.

Furthermore, the problem is solved according to a second aspect of the present invention, in which each mold half has a through-hole in the front part as well as in the rear part extending perpendicularly to the longitudinal direction of the mold half aligned with the hole in the heatable frame. a fixing bolt with a hole and a laterally projecting pin in said hole and through-hole, said pin being shaped in a cutout of the bushing into which said pin is inserted into the hole in the heating frame; This problem was solved by continuous engagement.

Advantageous embodiments of the invention are defined in the second patent claim.
It is described in Sections 7 through 7 and 9.

EXAMPLE In FIG. 1, the two mold halves are shown at 1, the heating frame at 2, and the shoe mold at 3, but the bottom pressure plate is not visible in this closed mold. Also, the shoe-shaped support is not labeled with a reference numeral.

The fixing bolt 5 for fixing the mold half 1 on the heating frame 2 is a screw with a hexagonal socket into which a hexagonal wrench key is inserted. Each mold half is fixed to the heating frame 2 by such a fixing bolt 5.

The second fixation is carried out by bolts 6 extending in the longitudinal direction of the mold halves, which engage in suitable recesses 7 with bushes 16 in the L-shaped rear part of the heating frame 2. do. If the mold half 1 is to be fixed, it is only necessary to bring it into position in the longitudinal direction of the mold half, in which case the bolt 6 is already engaged in the recess 7. And the mold halves are fixed in position.

In FIG. 3, the bore 8 in the heating frame 2 as well as the through bore 17 in the mold half are clearly visible, in which the bushing 9 is arranged. Furthermore, since the hole 8 is threaded, a bushing 9 with an external thread can be used.
is fixed and adjusted by screwing into said hole 8. Bushes 9 are located facing each other 2
It has two vertical slits 10, and the lower ends of the vertical slits each have a slit 11 extending diagonally downward.
The pin 13 is fixed in position within the slit 11.

A through hole extending transversely to the vertical axis is provided at the lower end of the fixing bolt 5, and a bolt 12 protrudes from the fixing bolt at both ends through the through hole.
is being guided.

If the fixing bolt 5 is pressed into the bushing 9 in such a way that the two pins 13 are guided through the slots 10, and the fixing bolt is no longer pressed into the bushing 9, the fixing bolt 5 It is fixed in a bayonet manner by a simple rotation about the longitudinal axis in the bushing 9. A compression spring 15 is provided between the head of the hexagonal screw with a socket and the step 14 of the mold half 2, which compresses the spring 15 in a manner that corresponds to the fixing position of the fixing bolt 5 in the mold half 1.
When the mold halves are pressed into the heating frame, the fixing bolts are lifted so that they no longer penetrate into the heating frame after being compressed and released from the form-fitting fixation, so that the mold halves are displaced on the heating frame. It becomes like this.

Furthermore, the rear part of the heating frame is configured as an L-shaped part which is located on the side facing away from the operator.

A significant reduction in the installation time compared to the prior art is also obtained if the fixing according to FIG. 3 is carried out at the front and rear respectively for each mold half.

Advantages of the Invention The advantage of the invention is that the two mold halves, which must be removed for mold replacement, can be disassembled from the heating frame in a very short time. This is because in this case it is only necessary to rotate the fixing bolt by a small angle about its longitudinal axis and then to pull it out of the heating frame. Therefore, even when the mold halves are subsequently removed from the heating frame, it is only necessary to pull out the horizontal bolts from the heating frame. A particularly advantageous effect of the form-locking type of fastening is that it is not necessary to disengage the second fastening bolt, but rather that the horizontal bolt and the vertical fastening bolt are configured as a complete bayonet connection. obtained by This combination significantly reduces the time required to release the side mold parts. This also applies to the fixing of the mold halves. As a result, in the present invention, the installation time for such an injection molding machine can be reduced to a minimum. If the molds have to be replaced relatively frequently, the fixed form of the invention offers significant economic advantages. This is because the saved equipment time can be used as manufacturing time. The fixings are extremely sturdy and do not require much repair. Furthermore, the fixing part is very simple and therefore very easy to operate.

Each of the vertical slits located opposite to each other in the bushing is connected to a slit extending obliquely downward. By rotating the lateral pins about the longitudinal axis of the fixing bolt, the pins are forced to be guided along the inclined slots, so that the mold halves are fixed in the heating frame. The slope of the slit is chosen in such a way as to create a self-locking effect for the lateral pins and thus even prevent automatic disengagement of the fixing bolt.

[Brief explanation of drawings]

The drawings show an embodiment of the invention, in which FIG. 1 is a perspective view of a molding station with both mold halves and a shoe mold, and FIG. 2 is a plan view of one mold half with a heating frame. , FIG. 3 is a cross-sectional view of the fixing portion along the line of FIG. 2. 1... Mold half, 2... Heating frame, 3... Shoe mold, 5... Fixing bolt, 6... Bolt, 7...
Notch, 8...hole, 9...bush, 10...vertical slit, 11...slit, 12...bolt, 1
3...Pin, 14...Step part, 15...Compression spring,
16...Bushiyu, 17...Through hole.

Claims (1)

[Scope of Claims] 1. An apparatus for directly molding a shoe sole onto the upper of a shoe, which is provided with one or more molding stations, and a mold half in which a molding unit of the molding station is movable laterally. In the type of shoe mold 3 which is adjustable in height and height, and a bottom pressurizing table, the mold halves are fixed to a heating frame, and the back of each mold half 1 is provided with a heating Each mold half is provided with a longitudinally extending bolt 6 which engages in a suitable cutout 7 in the frame 2 and which aligns with a hole 8 in the heating frame 2 in the front part of the mold half. A through hole 17 is provided extending perpendicularly to the longitudinal direction of the mold half, and a fixing bolt 5 having a laterally projecting pin 13 is arranged in the hole 8 and the through hole 17, and the fixing bolt 5 has a pin 13 projecting laterally. 13 is adapted to engage positively into suitable notches 10, 11 of the bushing 9 inserted into the hole 8 of the heating frame 2. Equipment for direct molding. 2. The device according to claim 1, wherein the fixing bolt 5 is a screw with a hexagonal socket. 3. Claims in which the hexagonal socket head screw has a horizontal hole at the end opposite to the head, and a bolt 12 projecting laterally from the fixing bolt as a pin 13 is inserted into the horizontal hole. The device according to paragraph 2. 4. Device according to claim 1, in which the heating frame 2 has a threaded bore 8 into which a bushing 9 with longitudinal and transverse slits is inserted. 5. Device according to claim 4, in which the pin 13 engages in the slit 11 in a fixed position. 6. Device according to one of the claims 1 to 5, characterized in that the bushing (9) is longitudinally movable and adjustable in the bore of the heating frame (2). 7. Device according to claim 1, characterized in that the cutout 7 arranged in the rear part of the heating frame 2 is formed as a hole into which a bushing 16 is inserted. 8. A device for directly molding shoe soles onto shoe uppers, which is equipped with one or more molding stations, in which the molding unit of the molding station has a mold half that is movable laterally and whose height is adjustable. In a type of shoe mold 3 and a bottom pressurizing table, in which the mold halves are fixed to a heating frame, each mold half has a heating frame 2 in a front part and a rear part. A through hole 17 extending perpendicularly to the longitudinal direction of the mold half is aligned with the hole 8 of the mold half, and a fixing bolt 5 having a laterally projecting pin 13 is arranged in the hole 8 and the through hole 17. and the pin 13 is inserted into the hole 8 of the heating frame 2.
A device for directly molding the sole of a shoe on the upper of the shoe, characterized in that it is adapted to engage positively into the notches 10, 11 of the bushing 9 inserted therein. 9. The device according to claim 8, wherein the through hole 17 is formed as a stepped hole.