KR102362215B1 - Shoe press machine - Google Patents

Abstract

The present invention provides a shoe compression machine comprising a press concave portion (10) and a press cover (30). A soft film bag is disposed in the press recess 10, and the inner cavity of the press recess 10 located on one side of the soft film bag is used so that an object to be pressed can be inserted, and the press recess located on the other side of the soft film bag The inner cavity of (10) is filled with a pressure transmission medium. The press cover 30 is capable of being pressed against the end of the press recess 10 close to the object to be pressed, and is open to the press recess 10, and the press cover 30 holds the object to be pressed. The object to be partially accommodated or pressurized is partially allowed to pass therethrough. According to the shoe compactor of the present invention, the object to be pressed can pass through the press cover or be partially accommodated by the press cover. The shoe compression machine of the present invention is compatible with shoe bodies of various sizes, and the shoe body is not easily wrinkled during the press-fitting process.

Description

shoe presser {SHOE PRESS MACHINE}

The present invention relates to the field of shoe manufacturing, and more particularly, to a shoe presser for press-fitting and/or completing a shoe when parts of the shoe are adhered.

In a shoe manufacturing process, an adhesive is typically used to bond multiple shoe soles, such as an outsole contacting the ground and a midsloe over the outsole. The process of joining the sole and midsole of a shoe is known in the shoe industry as a shoe assembly. Adhesives are also used to bond the sole and upper of a shoe, and the process of joining the sole and upper is known as shaping of a shoe. In addition, in the case of some shoes, additional materials such as rubber adhering to the nose or other parts of the shoe body are required in order to add other functional effects to the shoe body.

In the above-mentioned bonding process, it is required to apply pressure to the bonding site so that a firm bonding can be achieved. The traditional shoemaking process was to apply pressure manually, and in the prior art, a highly automated shoe press was used.

For example, Korean Utility Model Document KR1996-0009575Y1 describes a shoe compactor in which a press recess is formed, and a rubber bag containing silica gel (hereinafter referred to as a 'soft film bag') is provided in the press recess. Hydraulic oil is accommodated on one side of the soft film bag, and a shoe sole to be pressed is disposed on the other side. Imported oil applies pressure to the soft film bag, and the soft film bag applies pressure uniformly to the sole of the shoe to be pressed. As another example, Chinese utility model patent document CN206079293U describes a sole compactor having a six-way oil pocket. In this solution, a spherical fabric bag (hereinafter referred to as 'soft film bag') in which spherical particles are accommodated in the lower mold recess (hereinafter referred to as 'press recess') is provided, and the pressure of hydraulic oil is applied through the spherical particles. It is evenly transmitted to the shoe body.

In the above-mentioned solution, after the shoe body is placed in the soft film bag, the press recessed portion is closed by the plate-shaped press cover, and the pressure transmitted through the soft film bag is applied to the shoe body in the closed space. The closed space has a limited effect on the high shoe body, and in particular, the shoe body of some shoes, such as high-top type shoes such as boots, may be wrinkled during the press-fitting process. However, it may not be completely accommodated in the press concave part, so it may not be compressed or the press-fitting quality may be deteriorated.

It is an object of the present invention to solve or at least reduce the above-mentioned drawbacks of the prior art, and to provide a shoe press having a good press-in effect and good applicability.

The present invention provides a shoe compression machine comprising a press recess and a press cover, wherein a soft film bag is disposed in the press recess, and the inner cavity of the press recess located on one side of the soft film bag is such that an object to be pressed can be inserted. A pressure transmission medium is filled in the inner cavity of the press concavity located on the other side of the soft film bag, and the press cover can be pressed against the end of the press concavity close to the object to be pressed, and with respect to the press concavity It is open, and the press cover is adapted to partially receive the object to be pressed or to allow the object to be pressed partially through.

In at least one embodiment, the side of the press cover facing the press recess is recessed in the opposite direction from the press recess to form a press cover cavity, the press cover cavity being used to partially receive the object to be pressed.

In at least one embodiment, the radial size of the cross-section of the press cover cavity perpendicular to the axial direction varies from the press indentation to tapering along the opposite direction.

In at least one embodiment, the press cover includes a first cover half portion and a second cover half portion, wherein the first cover half portion and the second cover half portion move toward each other so as to be able to close the press cover and the first half cover part and the second half cover part move in a direction away from the other side so that the press cover can be opened, and the edges of the first cover half part and the second cover half part facing the other side have an open part , when the first cover half part and the second cover half part are close to each other, the opening part of the first cover half part and the opening part of the second cover half part form a press cover hole, and the object to be pressed is It may partially protrude from the press cover hole.

In at least one embodiment, the shoe press further includes an airbag capable of adjusting an inflation amount, the airbag being disposed on an inner periphery of the press cover hole.

In at least one embodiment, the compactor further comprises a press arm, the press arm being disposed on top of the press cover and covering an outer peripheral region of the press cover.

In at least one embodiment, the soft film bag comprises a first film, a second film, and elastic particles, wherein the elastic particles are disposed between the first film and the second film.

In at least one embodiment, the compactor includes a spray head disposed on top of the press recess, the spray head being used to spray compressed air towards the interior cavity of the press recess.

In at least one embodiment, a cushion pad is secured to the inner surface of the press cover.

In at least one embodiment, the shoe compactor further comprises a pressure sensor disposed within the flexible film bag, and an alarm system that obtains a measurement of the pressure sensor and generates an alarm signal when the measurement exceeds the upper pressure limit or the lower pressure limit. do.

According to the shoe compactor of the present invention, the object to be pressed can pass through the press cover or be partially accommodated by the press cover. The shoe compression machine of the present invention is compatible with shoe bodies of various sizes, and the shoe body does not easily wrinkle during the press-fitting process.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front view showing a shoe press machine according to a first embodiment of the present invention, showing the shoe press machine in a closed state.
Fig. 2 is a front view showing the shoe press machine according to the first embodiment of the present invention showing the shoe press machine in an open state;
3 is an explanatory view showing that the press concave portion and the press cover of the shoe compression machine according to the first embodiment of the present invention are combined.
4 is a front view of a shoe compression machine according to a second embodiment of the present invention.
5 is an explanatory view showing that the press cover of the shoe compression machine according to the second embodiment of the present invention is in an open state.
Fig. 6 is an explanatory view showing that the press cover of the shoe compression machine according to the second embodiment of the present invention is in a closed state;
Fig. 7 is a plan view showing the press cover of the shoe compression machine according to the second embodiment of the present invention in a closed state;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. It is to be understood that this detailed description teaches those skilled in the art how to implement the invention and does not exhaustively characterize all possible methods of the invention and does not limit the scope of the invention.

Unless otherwise noted, the directions of up, down, left, and right referred to in the present invention are described with reference to the direction shown in FIG. 1 . In the present invention, the axial direction A and the radial direction R are indicated by arrows in FIGS. 3 and 5 . A represents the axial direction of the press recess, and R represents the radial direction of the press recess.

first embodiment

A first embodiment of a shoe compression machine according to the present invention will be described with reference to Figs.

In this embodiment shown in Fig. 1, the shoe press machine has two working stages on the left and right side by side, each independently capable of performing the press-fitting process of a shoe or a shoe sole. Each working stage includes a press recess 10 , a piston rod 20 , a press cover 30 , a press arm 40 , and a spray head 50 .

A soft film bag is disposed in the press recess (10). The edge of the soft film bag is fixed to the press concave portion 10 to separate the press concave portion into an upper half in which the shoe body is inserted and a lower half in which the pressure transmission medium is accommodated. The soft film bag comprises a three-layer structure. The first and second layers are flexible films. The first layer is used to contact the shoe body, the second layer is used to contact a pressure transmission medium such as hydraulic oil, and the third layer is elastic particles. The first layer and the second layer seal the third layer from above. It is preferable that the films of the first layer and the second layer are rubber films having ductility. The elastic particles of the third layer are spherical silica gel particles having a diameter of about 2.5 mm.

At the lower side of the press concavity 10, the piston rod 20 pushes the piston disposed in the lower half of the press concavity to change the pressure of hydraulic oil. The press arm 40 is disposed on the upper portion of the press concave portion 10 to move the press cover 30 so that the press cover 30 is press-fitted into the upper portion of the press concave portion 10 or the press concave portion 10 to open the press cover 30 from the

After the shoe body is disposed in the upper half of the press recess 10 , the press arm 40 acts to strongly press the press cover 30 against the upper half of the press recess 10 . And the piston rod 20 acts to drive the piston to apply pressure to the hydraulic oil in the lower half of the press concave inlet 10 . Pressurized hydraulic oil compresses the soft film bag. After compression, the soft film bag seals the shoe body from all sides, and during this process, elastic particles move according to the shape of the shoe body, and the front surface of the shoe body is uniformly pressed.

Depending on the process conditions, the shoe body to be press-fitted must be applied with an adhesive and heated in an oven before being placed in the press recess. In general, the heating temperature of the oven reaches 80°C, and in the case of an adhesive used for bonding, such as a hot melt adhesive, the optimum bonding temperature is about 40°C. Accordingly, in this embodiment, the shoe compactor is provided with a temperature lowering device.

In this embodiment the temperature drop device includes a plurality of spray heads 50 . The spray head 50 is disposed on the frame, and at least one spray head 50 is disposed above each press recess 10 . The spraying direction of the spray head 50 is directed toward the inner cavity of the press concave inlet (10). The spray head 50 blows compressed air toward the inner cavity of the press concave portion 10 and is used to lower the temperature of the inner cavity of the press concave portion 10 by thermal convection.

Next, the detailed structure of the press cover 30 will be described with reference to FIGS. 2 and 3 .

In this embodiment, the face of the press cover 30 facing the press recess 10 is recessed in the opposite direction from the press recess 10 to form the press cover cavity 301. The press cover 30 is pressed When the press recess 10 is covered by the upper portion of the recess 10 , the upper (referred to as the shoe neck part) of the shoe disposed in the press recess 10 may be inserted into the press cover cavity 301 . Accordingly, the shoe upper is not compressed excessively during the press-fitting process, so that wrinkles are not formed.

Preferably, in order to conform to the shape of the upper, the radial size of the cross section of the press cover cavity 301 perpendicular to the axial direction A changes to become smaller in the direction away from the press recess 10 .

In addition, in order to prevent the shoe body to be pressed from being directly pressed by the press cover 30, and to help the shoe body to be pressed is placed in the press concave portion 10, the cushion pad 302 is provided. It is preferable to be fixed to the inner surface of the press cover (30). The cushion pad 302 is preferably made of rubber or silica gel.

second embodiment

Next, a second embodiment of a shoe compression machine according to the present invention will be described with reference to FIGS. 4 to 7 . This embodiment is a modified embodiment of the first embodiment to be particularly suitable for a shoe with a long neck portion, such as a boot. The difference between this embodiment and the first embodiment is mainly in the configuration of the press cover 30 .

In this embodiment, each press cover 30 includes two cover half parts, respectively, namely, a first cover half part 312 and a second cover half part 313 . These two cover half parts approach each other to close the press cover 30 (refer to FIG. 6), and the opening of the press cover 30 is caused by upward movement of these two cover half parts in opposite directions. is done

In Fig. 7, the edges of the first cover half portion 312 and the second cover half portion 313 facing to the opposite side have an open portion, so that when the press cover 30 is closed, a press is placed in the center of the press cover 30. A cover hole 311 is formed.

The size of the press cover hole 311 in the radial direction R is larger than the diameter of the shoe neck portion, so that the shoe S having a long length of the shoe neck portion is placed in the inner cavity of the press concave portion 10, and then the shoe neck portion is pressed It may protrude from the press recess 10 through the cover hole 311 .

It is preferable that an airbag capable of adjusting the inflation amount is disposed in the radial space between the press cover hole 311 and the shoe neck portion of the shoe S. Before the press cover 30 is closed, the airbag is in an uninflated state, and after the shoe S is placed in the press concave portion 10 and the press cover 30 is closed, the airbag is connected to the shoe neck and the press cover hole ( 311) expands until it contacts the inner peripheral wall, and then the expansion stops. By doing so, the shoe S can be accurately placed in the press recess 10 .

In this embodiment, the press arm 40 is not connected to the press cover 30 due to the different structure and opening/closing method of the press cover 30 . The press arm 40 can reciprocate in the axial direction A so that after the press cover 30 is closed, the press arm 40 can firmly press the press cover 30 on the upper part of the press cover 30 .

It should be understood that the press arm 40 can firmly press only the press cover in the outer peripheral region of the press cover 30 without contacting the exposed shoe ankle portion through the press cover hole 311 . For example, the press arm 40 may be constructed of a hollow frame or may consist of a plurality of press rod portions distributed in the circumferential direction of the press arm 40 .

In this embodiment, since the press arm 40 and the press cover 30 are separated, the spray head 50 is placed in a frame connected to the press arm 40 so that the spray head 50 is connected to the press indentation 10 . can be placed directly above the

Next, another optional configuration of the shoe compactor according to the present invention will be described.

pressure control system

Each press-fitting process of the shoe press according to the present invention is performed in two steps. The pressure in the first stage is lower than the pressure in the second stage, and in the pressing process of the second stage, the pressure is gradually increased and then gradually decreased so that the phenomenon of insufficient indentation or wrinkling that may occur in the pressing process does not appear. do. Optionally, a plurality of sensors are disposed on the flexible film bag to monitor the pressure value acting on the shoe body.

In the first step, a pre-pressure is applied. The piston rod 20 applies a first pressure. This first pressure is such that the pressure acting on the shoe body is 0.3kg/cm2.

In the second step, a compressive force is applied. After the piston rod 20 gradually increases the pressure to the second pressure, the thrust of the piston rod 20 is gradually released. This second pressure is much greater than the first pressure. For example, the second pressure is ten times the first pressure. After this process is continued for 7 seconds, the second pressure in this process is preferably such that the pressure acting on the shoe body is 10 kg/cm 2 .

pressure alarm system

It should be prevented from causing undesirable leakage of hydraulic oil for reasons such as rupture of the soft film bag or deformation of the press recess 10. The shoe compression machine according to the present invention has a pressure alarm system. This pressure alarm system acquires the current pressure in real time, for example, based on a sensor placed in a soft film bag.

The upper and lower pressure limits are set, and the current pressure exceeding the upper or lower pressure limits in a specific pressurization process is monitored in real time. If it is exceeded, an alarm will be generated. After the alarm, the hydraulic system stops applying pressure to prevent the operator from continuing the incomplete work.

The present invention has one or more of the following advantages.

(i) The press cover 30 partially accommodates the upper part of the shoe body to be pressed or allows the upper skin part to pass through, so that the shoe presser is suitable for shoes with a long shoe neck, and the shoe body can be easily worn during the press-in process Avoid wrinkling.

(ii) The shoe press according to the present invention has a temperature lowering device. By blowing compressed gas into the inner cavity of the press concave portion 10, the temperature lowering device prevents the temperature in the press concave portion 10 from rising too high, thereby improving the bonding effect of the adhesive.

(iii) According to the pressure control system of the present invention, the pressing process can be performed ideally, and the soft film bag has sufficient time to seal the shoe body. A thorough press-fitting process is performed, wrinkles are not easily formed, and there is no need to use other molds or fixing structures.

(iv) The pressure alarm system monitors the pressure state of the soft film bag in real time to prevent work with inaccurate pressure, and the operator can conveniently check the pressure abnormality of the shoe press in real time.

As such, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art will make various modifications to the above-mentioned embodiments of the present invention in accordance with the teachings of the present invention without departing from the scope of the present invention. will be able An example is:

(i) The pressure of hydraulic oil in the press concavity 10 is not controlled by the piston rod 20 arranged in the axial direction, and a liquid inlet and a liquid outlet are provided in the lower half of the press concavity so that the pressure is lowered It can be controlled by adjusting the amount of hydraulic oil flowing into the half.

(ii) The pressure transmission medium may be other liquids such as water other than hydraulic oil.

(iii) The shoe press according to the present invention is not limited to, for example, having two working stages, but may have a single working stage or a different number of working stages.

(iv) Although the shoe compactor according to the present invention is suitable for providing a press-fitting process and a forming process in a combination of shoe soles, the shoe compactor of the present invention may be used for the inserting process of other objects if necessary.

10: press recessed portion, 20: piston rod, 30: press cover, 301: press cover cavity, 311: press cover hole, 312: first half cover, 313: second cover half, 40: press arm, 50 : spray head, S: shoes.

Claims (10)

It includes a press recess 10 and a press cover 30, a soft film bag is disposed in the press recess 10, and the inner cavity of the press recess 10 located at one side of the soft film bag is pressed A pressure transmission medium is filled in the inner cavity of the press concave portion 10 located on the other side of the soft film bag and used so that the object to be pressed can be inserted, and the press cover 30 closes the press to the object to be pressed. In the shoe compression machine that is pressurized against the end of the concave portion 10 and is open to the press concave portion 10,
The press cover 30 is configured to partially accommodate the object to be pressed or to allow the object to be pressed to partially pass through,
The press cover 30 includes a first half cover part 312 and a second half cover part 313, wherein the first half cover part 312 and the second half cover part 313 are mutually Close the press cover 30 by moving close to each other, or move away from each other to open the press cover 30,
Each side of the first cover half portion 312 and the second cover half portion 313 facing the other side has an open portion, and the first cover half portion 312 and the second cover half portion 313 are When approaching, the opening part of the first half cover part 312 and the opening part of the second half cover part 313 together form a press cover hole 311 so that the object to be pressed is pressed into the press cover hole 311 . ) Shoe compactor, characterized in that it can be partially protruded from. The method of claim 1,
The side of the press cover 30 facing the press recess 10 is recessed in the opposite direction from the press recess 10 to form a press cover cavity 301, and the press cover cavity 301 is A shoe press, characterized in that it is used to partially contain an object to be pressed. 3. The method of claim 2,
The radial size of the cross section of the press cover cavity (301) perpendicular to the axial direction is changed from the press concave portion (10) along the opposite direction to become smaller and smaller. delete The method of claim 1,
The shoe compression machine, characterized in that it further comprises an airbag capable of adjusting the inflation amount, wherein the airbag is disposed on the inner periphery of the press cover hole (311). The method of claim 1,
Further comprising a press arm (40), wherein the press arm is disposed above the press cover (30) and covers the outer peripheral area of the press cover (30). The method of claim 1,
The soft film bag includes a first film, a second film, and elastic particles, wherein the elastic particles are disposed between the first film and the second film. The method of claim 1,
It further comprises a spray head 50, wherein the spray head 50 is disposed on the upper portion of the press concave portion 10 and is used to spray compressed air toward the inner cavity of the press concave portion 10. shoe press machine. The method of claim 1,
Shoe compression machine, characterized in that it further comprises a cushion pad fixed to the inner surface of the press cover (30). The method of claim 1,
A pressure sensor disposed in the flexible film bag, and an alarm system for acquiring the measured value of the pressure sensor and generating an alarm signal when the measured value exceeds the upper pressure limit value or the lower pressure limit value.

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