A kind of atomization spraying sole making equipment

Abstract

The present invention relates to an atomizing spray sole manufacturing device with better sole molding effect. The atomizing spray sole manufacturing device comprises a polyurethane sprayer and a sole molding mold, wherein the sole molding mold comprises a molding concave mold and a molding convex mold; the polyurethane sprayer comprises a manipulator and a polyurethane spray head, wherein the polyurethane spray head is mounted on the manipulator; the polyurethane spray head comprises a main valve body, a stirring motor, a stirring shaft and a mixing rod, wherein the stirring motor is transmission-connected to the stirring shaft, the mixing rod is connected to the stirring shaft, the main valve body has a discharge port, and is characterized in that: the discharge port of the main valve body is provided with a nozzle, and the nozzle comprises a nozzle body and a nozzle inner core. Since the atomizing spray sole manufacturing device sprays polyurethane in an atomized form, the polyurethane can fully contact the inner wall of the shoe mold cavity, and the shape of the sole after molding is more angular, and no bubbles are generated.

Description

Technical Field

[0001] The invention relates to a shoe sole manufacturing device. Background Art

[0002] The sole is formed by pouring polyurethane into the mold cavity of the shoe mold by a pouring head (i.e., a polyurethane pouring device) and then foaming it. At present, when the pouring head is working, its discharge port is aimed at the bottom surface of the shoe mold cavity to inject material, that is, the polyurethane starts to foam from the bottom surface of the mold cavity, and then slowly fills the mold cavity. However, this injection method has the following problems: First, since the polyurethane starts to foam from the bottom surface of the mold cavity, the polyurethane slowly covers the side of the mold cavity, so there is a lack of sufficient lateral pressure to squeeze out the air between the side of the mold cavity and the polyurethane. After molding, there will be small bubbles on the side of the sole, which greatly affects the appearance; second, some soles have edges and corners on the side (for various shapes). When injecting material, it is difficult for polyurethane to fill all the edges and corners. Therefore, after molding, the edges and corners of the sole are not clear, the finished product is not beautiful enough, and it does not meet the design requirements. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention innovatively provides an atomizing spraying sole manufacturing device with better sole molding effect.

[0004] The atomizing spray sole manufacturing equipment comprises a polyurethane spray machine and a sole forming mold, wherein the sole forming mold comprises a forming concave mold and a forming convex mold; the polyurethane spray machine comprises a manipulator and a polyurethane spray head, wherein the polyurethane spray head is mounted on the manipulator; the polyurethane spray head comprises a main valve body, a stirring motor, a stirring shaft and a mixing rod, wherein the stirring motor is transmission-connected to the stirring shaft, the mixing rod is connected to the stirring shaft, the main valve body has a discharge port, and is characterized in that: the discharge port of the main valve body is provided with a nozzle, wherein the nozzle comprises a nozzle body and a nozzle inner core, wherein the nozzle body is connected to the discharge port of the main valve body, wherein the nozzle body has an inner cavity and an air jet, and wherein the nozzle inner core is provided with a nozzle body. In the inner cavity of the nozzle body, the center of the nozzle inner core is provided with a discharge channel, the feed port of the discharge channel is communicated with the discharge port of the main valve body, the discharge port of the discharge channel passes through the air jet of the nozzle body, and an air outlet gap is provided between the inner wall of the air jet and the discharge port of the nozzle inner core; the nozzle inner core is provided with a sealing ring portion, and the sealing ring portion divides the inner cavity of the nozzle body into an upper cavity and a lower cavity, an air flow channel is provided on the nozzle inner core, a first air pressure inlet is provided on the nozzle body, the first air pressure inlet is communicated with the air flow channel of the nozzle inner core, the air flow channel of the nozzle inner core is communicated with the lower cavity of the nozzle body, and the lower cavity of the nozzle body is communicated with the air jet of the nozzle body.

[0005] The nozzle body is provided with a second air pressure inlet, which is communicated with the upper inner cavity of the nozzle body. The lower end of the nozzle body has an injection recess communicated with the injection port, and the inner wall of the injection recess is provided with an injection angle adjustment hole. The upper inner cavity of the nozzle body is communicated with the injection angle adjustment hole.

[0006] The bottom of the nozzle body is provided with an air injection hole communicated with the lower inner cavity.

[0007] A sealing ring seat is provided in the main valve body, the stirring shaft passes through the sealing ring seat, a lower sealing ring is fixedly mounted on the sealing ring seat, an upper sealing ring is provided above the lower sealing ring, the upper sealing ring is axially movably provided on the stirring shaft, a sealing spring is sleeved on the stirring shaft, the sealing spring acts on the upper sealing ring and causes the upper sealing ring to act on the lower sealing ring.

[0008] The stirring shaft is connected with an upper spring seat, the stirring shaft is connected with an axially movable lower spring seat, the sealing spring is located between the upper spring seat and the lower spring seat, and a sealing ring is provided between the lower spring seat and the upper sealing ring.

[0009] The molding die is installed on the lower die seat, and the molding punch is installed on the upper die seat. The upper die seat is hinged at the front end of the lower die seat. The upper die seat can rotate and place the molding punch above the molding die. The side of the lower die seat is hinged with a last seat, and the last seat is provided with a last chuck for clamping the shoe last. Two openable side panels are hinged on the last seat, and the side panels are connected with side molds that can hold the shoe last. The last seat can rotate and place the shoe last above the molding die.

[0010] The shoe last seat is connected with a push rod, and a push wheel is installed on the push rod. The push wheel can be pushed on the shoe last.

[0011] An upper locking hook is installed on the upper die base, and the lower die base is installed on a support. A lower locking hook that can move forward and backward is installed on the support, and the lower locking hook can be hooked with the upper locking hook.

[0012] According to the atomizing spraying sole manufacturing equipment provided by the present invention, since the polyurethane is sprayed in the form of atomization, the polyurethane can fully contact the inner wall of the shoe mold cavity, so that the shape of the sole after molding is more clear-cut and no bubbles are generated. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view of the present invention;

[0014] Figure 2 This is the front view of the polyurethane spray head;

[0015] Figure 3 is a cross-sectional view of a polyurethane spray head;

[0016] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0017] Figure 5 for Figure 3 A partial enlarged view of point C in the middle;

[0018] Figure 6 is a partial cross-sectional view of the nozzle body;

[0019] Figure 7 Three-dimensional mold for sole molding Figure 1 ;

[0020] Figure 8 Three-dimensional mold for sole molding Figure 2 ;

[0021] Fig. 9 A side view of the interior of the sole forming mold. DETAILED DESCRIPTION

[0022] like Figure 1 As shown, the atomizing spray sole manufacturing equipment includes a polyurethane spray machine and a sole forming mold D, the sole forming mold D includes a forming die 6 and a forming punch 7; the polyurethane spray machine includes a robot F and a polyurethane spray head E, and the polyurethane spray head E is installed on the robot F.

[0023] During operation, the manipulator F drives the polyurethane spray head E to move, and the polyurethane spray head E can spray polyurethane into the molding die 6 of the sole molding die D below in an atomized manner.

[0024] The manipulator F is an existing technology and can be a six-axis manipulator, which can realize all-round rotation with the polyurethane spray head E. The structure and working principle of the polyurethane spray head E are specifically introduced below.

[0025] like Figure 2 and Figure 3 As shown, the polyurethane spray head E includes a main valve body 2, a stirring motor 1, a stirring shaft 4 and a mixing rod 5. The stirring motor 1 is connected to the stirring shaft 4 by transmission, the mixing rod 5 is connected to the stirring shaft 4, and the main valve body 2 has a discharge port 20. During operation, the polyurethane mixed material enters the main valve body 2, the stirring motor 1 drives the stirring shaft 4 to rotate, the stirring shaft 4 drives the mixing rod 5 to rotate, and the mixing rod 5 fully mixes the polyurethane, and then the polyurethane is discharged from the discharge port 20 of the main valve body 2.

[0026] In order to spray the polyurethane material in an atomized form, the present invention provides a nozzle 3 at the outlet 20 of the main valve body 2. Figure 4As shown, the nozzle 3 includes a nozzle body 30 and a nozzle core 31. The nozzle body 30 is connected to the discharge port 20 of the main valve body 2. The nozzle body 30 has an inner cavity and an air jet 305. The nozzle core 31 is arranged in the inner cavity of the nozzle body 30. The center of the nozzle core 31 has a discharge channel 32. The feed port of the discharge channel 32 is communicated with the discharge port 20 of the main valve body 2. The polyurethane enters the discharge channel 32 of the nozzle core 31 through the discharge port 20 of the main valve body 2. The discharge port of the discharge channel 32 passes through the air jet 305 of the nozzle body 30 (so that the material sprayed out of the discharge channel 32 will not enter the spray port of the nozzle body 30). In the air port 305), there is an air outlet gap between the inner wall of the air jet 305 and the discharge port of the nozzle inner core 31; in addition, the nozzle inner core 31 has a sealing ring portion 310, and the sealing ring portion 310 divides the inner cavity of the nozzle body 30 into an upper inner cavity 303 and a lower inner cavity 304. The nozzle inner core 31 is provided with an air flow channel 33, and the nozzle body 30 is provided with a first air pressure inlet 301. The first air pressure inlet 301 is communicated with the air flow channel 33 of the nozzle inner core 31, the air flow channel 33 of the nozzle inner core 31 is communicated with the lower inner cavity 304 of the nozzle body 30, and the lower inner cavity 304 of the nozzle body 30 is communicated with the air jet 305 of the nozzle body 30.

[0027] The working principle of the nozzle 3 is as follows. When polyurethane enters the discharge channel 32 of the nozzle core 31 through the discharge port 20 of the main valve body 2, it is ejected from the discharge channel 32 of the nozzle core 31; at the same time, the first air pressure inlet 301 is fed with air pressure, and the air pressure enters the lower inner cavity 304 of the nozzle body 30 through the air flow channel 33 of the nozzle core 31, and the air pressure in the lower inner cavity 304 is ejected through the air jet 305 of the nozzle body 30. Due to the air outlet gap between the inner wall of the air jet 305 and the discharge port of the nozzle core 31, the air pressure flows out from the air outlet gap, and the air outlet gap surrounds the discharge port of the nozzle core 31. In this way, the material ejected from the discharge port of the nozzle core 31 is instantly atomized by the pressure of the air pressure, and the atomized polyurethane can fully contact the inner wall of the shoe mold cavity, so that the shape of the sole after molding is more sharp and no bubbles are generated.

[0028] In order to adjust the spray angle of the nozzle 3, Figure 4As shown, the present invention further provides a second air pressure inlet 302 on the nozzle body 30, the second air pressure inlet 302 is communicated with the upper inner cavity 303 of the nozzle body 30, and the lower end of the nozzle body 30 is provided with an injection recess 307 communicated with the jet port 305, the inner wall of the injection recess 307 is provided with an injection angle adjustment hole 306, and the upper inner cavity 303 of the nozzle body 30 is communicated with the injection angle adjustment hole 306. When the second air pressure inlet 302 is connected to air pressure, the air pressure enters the upper inner cavity 303 of the nozzle body 30, and then is ejected through the injection angle adjustment hole 306. Since the polyurethane is ejected from the discharge port of the nozzle inner core 31, the injection range is in the injection recess 307, and the injection angle adjustment hole 306 is located on the side of the injection recess 307, when the air pressure is ejected from the injection angle adjustment hole 306, it can exert pressure on the polyurethane spray from the side, thereby changing the polyurethane injection range or injection angle.

[0029] In order to obtain better atomization effect, Figure 6 As shown, the present invention also has an air jet hole 308 at the bottom of the nozzle body 30, which is connected to the lower inner cavity 304. The air jet hole 308 is located outside the air jet port 305 of the nozzle body 30, and the air pressure ejected from the air jet hole 308 can also act on the already ejected polyurethane, thereby improving the atomization effect of the polyurethane.

[0030] In order to facilitate the installation of the nozzle core 31, the nozzle body 30 of the present invention is formed by connecting a detachable upper nozzle body and a lower nozzle body, and the upper end of the nozzle core 31 is threadedly connected to the upper nozzle body. When installing, first disassemble the upper nozzle body and the lower nozzle body, then thread the upper end of the nozzle core 31 to the upper nozzle body, and finally connect the lower nozzle body to the upper nozzle body, which is very convenient to install.

[0031] In order to prevent the material in the main valve body 2 from flowing upward in the reverse direction, Figure 5 As shown, the present invention is provided with a mechanical seal structure in the main valve body 2, specifically, a seal ring seat 40 is provided in the main valve body 2, the agitator shaft 4 passes through the seal ring seat 40, a lower seal ring 41 is fixedly mounted on the seal ring seat 40, an upper seal ring 42 is provided above the lower seal ring 41, the upper seal ring 42 is axially movable on the agitator shaft 4 (through a spline connection, the upper seal ring 42 is only allowed to move along the axial direction of the agitator shaft 4, and the rotation of the agitator shaft 4 can drive the upper seal ring 42 to rotate together), and a seal spring 45 is sleeved on the agitator shaft 4, the seal spring 45 acts on the upper seal ring 42, and the upper seal ring 42 acts on the lower seal ring 41. Due to the action of the seal spring 45, the upper seal ring 42 always acts downward on the lower seal ring 41, so that the two form a good mechanical seal.

[0032] In order to further improve the sealing performance, an upper spring seat 46 is connected to the stirring shaft 4, and an axially movable lower spring seat 44 is connected to the stirring shaft 4 (also connected by splines), a sealing spring 45 is located between the upper spring seat 46 and the lower spring seat 44, and a sealing ring 43 is provided between the lower spring seat 44 and the upper sealing ring 42. The sealing ring 43 here can further improve the sealing performance.

[0033] like Figure 7 As shown, the sole molding die D includes a molding die 6 and a molding convex die 7. The molding die 6 is mounted on a lower die base 60, and the molding convex die 7 is mounted on an upper die base 70. The upper die base 70 is hinged to the front end of the lower die base 60. When the upper die base 70 rotates, the molding convex die 7 can be placed above the molding die 6. Figure 8 As shown, a shoe last seat 80 is hinged on the side of the lower mold seat 60, and a shoe last clamp 81 for clamping the shoe last 8 is provided on the shoe last seat 80. Two openable side panels 90 are hinged on the shoe last seat 80, and the side panels 90 are connected to the side molds 9 that can hold the shoe last. The shoe last seat 80 can rotate and place the shoe last 8 above the molding die 6.

[0034] The working principle of this sole forming mold D is as follows: first, polyurethane is poured into the forming die 6, and then the forming punch 7 is pressed into the forming die 6, so that the bottom layer of the sole is formed, and then polyurethane is sprayed into the forming die 6 again (on the first layer of the sole), and then the shoe last seat 80 is rotated to press the shoe last 8 into the forming die 6, so that the upper on the shoe last 8 has two layers of soles.

[0035] like Fig. 9 As shown, the shoe last 8 is connected to the shoe last chuck 81, and the shoe last chuck 81 is located directly below the last root of the shoe last 8, so the shoe last chuck 81 will give the last root of the shoe last 8 a better support force, but the support force for the last head of the shoe last 8 is poor, and when the shoe last 8 is pressed into the forming die 6, the entire bottom surface of the shoe last 8 will be stressed, and since the last head of the shoe last 8 receives a poor support force, the pressure given will also become poor, which will cause the sole molding or the bonding of the sole and the upper to be affected. Therefore, the present invention is connected to a push rod 82 on the shoe last seat 80, and a push wheel 83 is installed on the push rod 82, and the push wheel 83 can be pushed on the upper part of the last head of the shoe last 8. Through this structure, the entire bottom surface of the shoe last 8 can be given a greater pressure, thereby obtaining a better sole molding effect and sole adhesion.

[0036] In order to make the forming convex die 7 and the forming concave die 6 firmly clamped, Figure 8As shown, an upper locking hook 71 is installed on the upper die base 70, and the lower die base 60 is installed on the support 62, and a lower locking hook 61 that can move forward and backward is installed on the support 62. When the forming punch 7 and the forming die 6 are closed, the lower locking hook 61 is moved to hook the lower locking hook 61 with the upper locking hook 71.

Claims

1. An atomizing spray sole manufacturing device, comprising a polyurethane spray machine and a sole forming mold (D), wherein the sole forming mold (D) comprises a forming concave mold (6) and a forming convex mold (7); the polyurethane spray machine comprises a manipulator (F) and a polyurethane spray head (E), wherein the polyurethane spray head (E) is mounted on the manipulator (F), the polyurethane spray head (E) comprises a main valve body (2), a stirring motor (1), a stirring shaft (4) and a mixing rod (5), wherein the stirring motor (1) is transmission-connected to the stirring shaft (4), the mixing rod (5) is connected to the stirring shaft (4), and the main valve body (2) has a discharge port (20), characterized in that: The discharge port (20) of the main valve body (2) is provided with a nozzle (3), the nozzle (3) comprising a nozzle body (30) and a nozzle core (31), the nozzle body (30) being connected to the discharge port (20) of the main valve body (2), the nozzle body (30) having an inner cavity and an air jet (305) communicating with each other, the nozzle core (31) being arranged in the inner cavity of the nozzle body (30), the center of the nozzle core (31) having a discharge channel (32), the feed port of the discharge channel (32) being communicated with the discharge port (20) of the main valve body (2), the discharge port of the discharge channel (32) passing through the air jet (305) of the nozzle body (30), the inner cavity of the air jet (305) being arranged in the inner cavity of the nozzle body (30 ... An air outlet gap is provided between the wall and the discharge port of the nozzle inner core (31); the nozzle inner core (31) has a sealing ring portion (310), the sealing ring portion (310) divides the inner cavity of the nozzle body (30) into an upper inner cavity (303) and a lower inner cavity (304); an air flow channel (33) is provided on the nozzle inner core (31), and a first air pressure inlet (301) is provided on the nozzle body (30); the first air pressure inlet (301) is in communication with the air flow channel (33) of the nozzle inner core (31), the air flow channel (33) of the nozzle inner core (31) is in communication with the lower inner cavity (304) of the nozzle body (30), and the lower inner cavity (304) of the nozzle body (30) is in communication with the nozzle body. The nozzle body (30) is provided with a second air pressure inlet (302), the second air pressure inlet (302) is in communication with the upper inner cavity (303) of the nozzle body (30), the lower end of the nozzle body (30) is provided with an injection recess (307) in communication with the air injection inlet (305), the inner wall of the injection recess (307) is provided with an injection angle adjustment hole (306), the upper inner cavity (303) of the nozzle body (30) is in communication with the injection angle adjustment hole (306); a sealing ring seat (40) is provided in the main valve body (2), the stirring shaft (4) passes through the sealing ring seat (40), and a lower A sealing ring (41), an upper sealing ring (42) is provided above the lower sealing ring (41), the upper sealing ring (42) is axially movably provided on the stirring shaft (4), a sealing spring (45) is sleeved on the stirring shaft (4), the sealing spring (45) acts on the upper sealing ring (42), and causes the upper sealing ring (42) to act on the lower sealing ring (41); an upper spring seat (46) is connected to the stirring shaft (4), and an axially movably lower spring seat (44) is connected to the stirring shaft (4), the sealing spring (45) is located between the upper spring seat (46) and the lower spring seat (44), and a sealing ring (43) is provided between the lower spring seat (44) and the upper sealing ring (42).

2. The atomizing spraying sole manufacturing equipment according to claim 1 is characterized in that: The bottom of the nozzle body (30) is provided with an air injection hole (308) which is in communication with the lower inner cavity (304).

3. The atomizing spraying sole manufacturing equipment according to claim 1 is characterized in that: The molding die (6) is mounted on a lower die base (60), and the molding convex die (7) is mounted on an upper die base (70). The upper die base (70) is hinged to the front end of the lower die base (60). The upper die base (70) can rotate to place the molding convex die (7) above the molding die (6). A shoe last base (80) is hinged to the side of the lower die base (60). A shoe last clamp (81) for clamping a shoe last (8) is provided on the shoe last base (80). Two openable side panels (90) are hinged to the shoe last base (80). The side panels (90) are connected to side molds (9) for holding the shoe last. The shoe last base (80) can rotate to place the shoe last (8) above the molding die (6).

4. The atomizing spraying sole manufacturing equipment according to claim 3 is characterized in that: The shoe last seat is connected to a push rod (82), and a push wheel (83) is mounted on the push rod (82). The push wheel (83) can be pressed against the upper part of the shoe last (8).

5. The atomizing spraying sole manufacturing equipment according to claim 3 is characterized in that: An upper locking hook (71) is mounted on the upper die base (70), the lower die base (60) is mounted on a support (62), a lower locking hook (61) that can move forward and backward is mounted on the support (62), and the lower locking hook (61) and the upper locking hook (71) can be hooked together.

6. The atomizing spraying sole manufacturing equipment according to claim 1 is characterized in that: The nozzle body (30) is formed by connecting a detachable upper nozzle body and a lower nozzle body, and the upper end of the nozzle inner core (31) is threadedly connected in the upper nozzle body.

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