Rotating disc type EVA shoe sole secondary foaming forming machine

Abstract

The utility model relates to a turntable type EVA (Ethylene Vinyl Acetate) sole secondary foaming forming machine, which belongs to the technical field of foaming forming machines and comprises a base, a support frame is arranged on the rear side of the upper surface of the base, a limiting mechanism is arranged on the upper surface of the support frame, and a rotating mechanism is arranged on the upper surface of the base. The limiting mechanism comprises a first electric push rod arranged on the upper surface of the supporting frame, the outer side of an output shaft of the first electric push rod slidably penetrates through the supporting frame and extends to the lower side, and upper dies are arranged on the left side and the right side of the lower surface of the moving plate correspondingly. According to the rotating disc type EVA shoe sole secondary foaming forming machine, gas generated during foaming is exhausted through first exhaust holes in the left side and the right side and second exhaust holes in the left side and the right side, the moving stability of the upper mold can be improved under the action of mutual cooperation of limiting sliding grooves in the left side and the right side and sliding blocks in the left side and the right side, and the situation of moving deviation is reduced; and therefore, the foam forming machine can work stably.

Description

Technical Field

[0001] This utility model relates to the field of foam molding machine technology, specifically a rotary EVA shoe sole secondary foam molding machine. Background Technology

[0002] In modern manufacturing industries, the production and processing of athletic shoes have also begun to be automated to meet the needs of high-efficiency production and reduce the workload of workers. The production of shoe soles can be carried out by a rotary EVA sole secondary foaming molding machine.

[0003] Although the turntable of the existing EVA shoe sole molding machine has achieved rotational positioning, it is generally driven by a cylinder to move the upper mold downward to cooperate with the lower mold and ensure that the material maintains the required shape during the foaming process. However, the stability is generally poor when the upper mold is driven downward by a cylinder. Based on this, a turntable EVA shoe sole secondary foaming molding machine is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a rotary EVA shoe sole secondary foaming molding machine, which has advantages such as the ability to limit the upper mold and improve the stability of vertical movement, and solves the problem of general stability when the upper mold is driven to move downward by a cylinder.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rotary EVA shoe sole secondary foaming molding machine, including a base, a support frame is provided on the rear side of the upper surface of the base, a limiting mechanism is provided on the upper surface of the support frame, and a rotating mechanism is provided on the upper surface of the base.

[0006] The limiting mechanism includes a first electric push rod disposed on the upper surface of the support frame. The outer side of the output shaft of the first electric push rod slides through the support frame and extends to the lower side. A movable plate is disposed on the outer side of the output shaft of the first electric push rod. Upper molds are disposed on both the left and right sides of the lower surface of the movable plate. At least two first exhaust holes are opened through the upper surface of the upper molds on both the left and right sides. A filter screen is disposed inside the at least two first exhaust holes. At least two second exhaust holes are opened through the left and right sides of the upper surface of the movable plate. The first exhaust holes and the second exhaust holes are connected.

[0007] The limiting mechanism also includes limiting slide grooves on the left and right sides of the back wall of the inner cavity of the support frame. Sliders are slidably connected inside the limiting slide grooves on both sides. The front sides of the sliders on both sides are fixedly connected to the left and right sides of the back of the moving plate. The back of the moving plate is in contact with the back wall of the inner cavity of the support frame.

[0008] Furthermore, the slider is fitted with the gap of the limiting groove, and the slider moves linearly up and down inside the limiting groove.

[0009] Furthermore, the rotating mechanism includes a U-shaped frame disposed on the upper surface of the base, a motor disposed on the top wall of the inner cavity of the U-shaped frame, a rotating rod rotatably connected to the upper surface of the U-shaped frame via a bearing, the outer side of the motor output shaft rotatably passing through the U-shaped frame and fixedly connected to the bottom end of the rotating rod, and a cooling plate disposed on the top end of the rotating rod.

[0010] Furthermore, the rotating mechanism also includes four lower molds disposed on the upper surface of the cooling plate. Connecting frames are disposed on both the left and right sides of the upper surface of the base. A second electric push rod is disposed on the opposite side of the left and right connecting frames. The outer side of the output shaft of the second electric push rod on both the left and right sides slides through the left and right connecting frames and extends to the opposite side. Insert blocks are disposed on the outer side of the output shaft of the second electric push rod on both the left and right sides. Four slots are opened on the outer side of the cooling plate. The insert blocks on both the left and right sides are slidably connected to the interior of the corresponding slots.

[0011] Furthermore, the four lower molds are arranged in a rectangular pattern on the upper surface of the cooling plate.

[0012] Furthermore, heating plates are embedded and fixed inside the bottom walls of the four lower mold cavities.

[0013] Furthermore, the gap between the insert and the slot is matched.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. In this rotary EVA shoe sole secondary foaming molding machine, the gas generated during foaming is discharged through the first exhaust hole and the second exhaust hole on the left and right sides. The stability of the upper mold movement is improved by the cooperation between the left and right limit slides and the left and right sliders, reducing the occurrence of movement deviation, thereby enabling the foaming molding machine to work stably.

[0016] 2. This rotary EVA sole secondary foaming molding machine can rotate the cooling plate 90 degrees by starting the motor. Then, the EVA material that has undergone the first foaming treatment is placed inside the lower mold on the left and right sides, and then heated and pressurized to further decompose and form the foaming agent inside. Through the second electric push rod on the left and right sides, the left and right side inserts can be driven to insert into the corresponding slots, so that the cooling plate is limited and fixed, improving the stability during foaming molding. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the limiting mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the connection structure between the limiting slide and the support frame of this utility model;

[0020] Figure 4 This is a schematic diagram of the rotating mechanism of this utility model.

[0021] In the diagram: 1. Base, 2. Support frame, 3. Limiting mechanism, 301. First electric push rod, 302. Moving plate, 303. Upper mold, 304. First vent, 305. Filter screen, 306. Second vent, 307. Limiting groove, 308. Slider, 4. Rotating mechanism, 401. U-shaped frame, 402. Motor, 403. Rotating rod, 404. Cooling plate, 405. Lower mold, 406. Connecting frame, 407. Second electric push rod, 408. Insert block, 409. Slot. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 The rotary EVA shoe sole secondary foaming molding machine in this embodiment includes a base 1, a support frame 2 is provided on the rear side of the upper surface of the base 1, a limiting mechanism 3 is provided on the upper surface of the support frame 2, the limiting mechanism 3 limits the upper mold 303 and improves the stability of the up and down movement, and a rotating mechanism 4 is provided on the upper surface of the base 1, the rotating mechanism 4 improves the stability during foaming molding.

[0024] Please see Figures 2-3 In order to limit the upper mold 303 and improve the stability of its vertical movement, the limiting mechanism 3 in this embodiment includes a first electric push rod 301 disposed on the upper surface of the support frame 2. The outer side of the output shaft of the first electric push rod 301 slides through the support frame 2 and extends to the lower side. A moving plate 302 is disposed on the outer side of the output shaft of the first electric push rod 301. Upper molds 303 are disposed on both the left and right sides of the lower surface of the moving plate 302. At least two first exhaust holes 304 are opened through the upper surface of the left and right upper molds 303. A filter screen 305 is disposed inside the at least two first exhaust holes 304. At least two second exhaust holes 306 are opened through the left and right sides of the upper surface of the moving plate 302. The first exhaust holes 304 and the second exhaust holes 306 are connected.

[0025] In this embodiment, the limiting mechanism 3 also includes limiting grooves 307 formed on the left and right sides of the back wall of the inner cavity of the support frame 2. Slider 308 is slidably connected inside the left and right limiting grooves 307. The front of the left and right sliders 308 is fixedly connected to the left and right sides of the back of the moving plate 302. The back of the moving plate 302 is in contact with the back wall of the inner cavity of the support frame 2. The slider 308 is matched with the gap of the limiting groove 307. The slider 308 moves linearly up and down inside the limiting groove 307.

[0026] It should be noted that by activating the first electric push rod 301, the upper molds 303 on the left and right sides are moved downwards and pressurized, causing the foaming agent inside to decompose further and generate more gas. The generated gas is discharged through the first exhaust port 304 and the second exhaust port 306 on the left and right sides.

[0027] Please see Figure 4 To improve stability during foaming and molding, in this embodiment, the rotating mechanism 4 includes a U-shaped frame 401 disposed on the upper surface of the base 1. A motor 402 is disposed on the top wall of the inner cavity of the U-shaped frame 401. A rotating rod 403 is rotatably connected to the upper surface of the U-shaped frame 401 via a bearing. The outer side of the output shaft of the motor 402 rotates through the U-shaped frame 401 and is fixedly connected to the bottom end of the rotating rod 403. A cooling plate 404 is disposed at the top end of the rotating rod 403.

[0028] In this embodiment, the rotating mechanism 4 also includes four lower molds 405 disposed on the upper surface of the cooling plate 404. Connecting frames 406 are disposed on both the left and right sides of the upper surface of the base 1. A second electric push rod 407 is disposed on the opposite side of the left and right connecting frames 406. The outer side of the output shaft of the left and right second electric push rods 407 slides through the left and right connecting frames 406 and extends to the opposite side. Insert blocks 408 are disposed on the outer side of the output shaft of the left and right second electric push rods 407. Support pulley groups are disposed at the four corners of the lower surface of the cooling plate 404. The pulley groups include support rods, and the bottom end of the support rods is rotatably connected to pulleys. The interior of the cooling plate 404 is a cavity. A water inlet pipe is connected to the left side of the cooling plate 404, and a water outlet pipe is connected to the right side of the cooling plate 404. The other end of the water inlet pipe can be connected to an external water tap, and the other end of the water outlet pipe can be connected to a water tank. The water in the water tap can dissipate heat from the four lower molds 405. The four lower molds 405 are all made of metal material and have thermal conductivity.

[0029] In this embodiment, four slots 409 are provided on the outer side of the cooling plate 404. The left and right side inserts 408 are slidably connected to the interior of the corresponding slots 409. The four lower molds 405 are rectangularly distributed on the upper surface of the cooling plate 404. A heating plate is embedded and fixed inside the bottom wall of the inner cavity of each of the four lower molds 405. The gap between the inserts 408 and the slots 409 is matched. Through the combination of the upper mold 303 and the lower mold 405, it is ensured that the material maintains the required shape during the foaming process.

[0030] It should be noted that by starting the motor 402, the cooling plate 404 can be rotated 90 degrees. Then, the EVA material that has undergone one foaming treatment is placed inside the lower molds 405 on the left and right sides. It is then heated and pressurized to further decompose and form the foaming agent inside. After cooling, the foaming process is carried out. During the foaming process, the second electric push rods 407 on the left and right sides can drive the inserts 408 on the left and right sides to be inserted into the corresponding slots 409, so that the cooling plate 404 is limited and fixed, improving stability.

[0031] The working principle of the above embodiments is as follows:

[0032] After one foaming process, the EVA material can be placed inside the left and right lower molds 405. Heating plates inside the left and right lower molds 405 then heat the interior. Next, by activating the first electric push rod 301, the left and right upper molds 303 move downwards, applying pressure and further decomposing the foaming agent inside, generating more gas. The generated gas is discharged through the first vent 304 and the second vent 306 on the left and right sides. The combination of the upper mold 303 and the lower mold 405 ensures that the material maintains the required shape during the foaming process, and the left and right limiting grooves 307... The interaction between the upper mold 303 and the left and right sliders 308 improves the stability of the upper mold 303 movement and reduces the occurrence of movement deviation. By starting the motor 402, the cooling plate 404 can be rotated 90 degrees. Then, the material after the first foaming treatment is placed inside the lower molds 405 on the left and right sides, and then heated and pressurized to further decompose and form the foaming agent inside. After cooling, the foaming process is carried out. During the foaming process, the second electric push rods 407 on the left and right sides can drive the left and right insert blocks 408 to be inserted into the corresponding slots 409, so that the cooling plate 404 is limited and fixed, improving stability.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A rotary EVA sole secondary foaming molding machine, comprising a base (1), characterized in that: A support frame (2) is provided on the rear side of the upper surface of the base (1), a limiting mechanism (3) is provided on the upper surface of the support frame (2), and a rotating mechanism (4) is provided on the upper surface of the base (1). The limiting mechanism (3) includes a first electric push rod (301) disposed on the upper surface of the support frame (2). The outer side of the output shaft of the first electric push rod (301) slides through the support frame (2) and extends to the lower side. A movable plate (302) is disposed on the outer side of the output shaft of the first electric push rod (301). Upper molds (303) are disposed on both the left and right sides of the lower surface of the movable plate (302). At least two first exhaust holes (304) are opened through the upper surface of the left and right sides of the upper molds (303). A filter screen (305) is disposed inside the at least two first exhaust holes (304). At least two second exhaust holes (306) are opened through the left and right sides of the upper surface of the movable plate (302). The first exhaust holes (304) and the second exhaust holes (306) are connected. The limiting mechanism (3) further includes limiting grooves (307) on the left and right sides of the back wall of the inner cavity of the support frame (2). The inner sides of the limiting grooves (307) are slidably connected to sliders (308). The front sides of the sliders (308) are fixedly connected to the left and right sides of the back of the moving plate (302). The back of the moving plate (302) is in contact with the back wall of the inner cavity of the support frame (2).

2. The rotary EVA sole secondary foaming molding machine according to claim 1, characterized in that: The slider (308) is fitted with the limiting groove (307) with a gap, and the slider (308) moves linearly up and down inside the limiting groove (307).

3. The rotary EVA sole secondary foaming molding machine according to claim 1, characterized in that: The rotating mechanism (4) includes a U-shaped frame (401) disposed on the upper surface of the base (1). A motor (402) is disposed on the top wall of the inner cavity of the U-shaped frame (401). A rotating rod (403) is rotatably connected to the upper surface of the U-shaped frame (401) through a bearing. The outer side of the output shaft of the motor (402) rotatably passes through the U-shaped frame (401) and is fixedly connected to the bottom end of the rotating rod (403). A cooling plate (404) is disposed at the top end of the rotating rod (403).

4. The rotary EVA shoe sole secondary foaming molding machine according to claim 3, characterized in that: The rotating mechanism (4) also includes four lower molds (405) disposed on the upper surface of the cooling plate (404). Connecting frames (406) are provided on both the left and right sides of the upper surface of the base (1). A second electric push rod (407) is provided on the opposite side of the left and right connecting frames (406). The outer side of the output shaft of the second electric push rod (407) on both the left and right sides slides through the left and right connecting frames (406) and extends to the opposite side. Insert blocks (408) are provided on the outer side of the output shaft of the second electric push rod (407) on both the left and right sides. A number of slots (409) are opened on the outer side of the cooling plate (404). The insert blocks (408) on both the left and right sides are slidably connected to the interior of the corresponding slots (409).

5. The rotary EVA sole secondary foaming molding machine according to claim 4, characterized in that: The four lower molds (405) are rectangularly distributed on the upper surface of the cooling plate (404).

6. The rotary EVA sole secondary foaming molding machine according to claim 4, characterized in that: Heating plates are embedded and fixed inside the bottom wall of the four lower molds (405).

7. The rotary EVA sole secondary foaming molding machine according to claim 4, characterized in that: The gap between the insert (408) and the slot (409) is matched.

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