Automatic injection device for sole foaming material

Abstract

The utility model discloses an automatic material injection device for sole foaming materials, which comprises a mounting table, four supporting columns are fixedly connected to the outer wall of the top of the mounting table, one ends of the tops of the four supporting columns are fixedly connected with a same mounting rack, a temporary storage assembly is mounted at the top of the mounting rack, and the temporary storage assembly is fixedly connected with the mounting rack. The temporary storage assembly comprises a supporting frame fixedly connected with the inner wall of one side of the mounting frame, a plurality of springs are fixedly connected with the outer wall of the top of the supporting frame, one ends of the tops of the springs are fixedly connected with the same mounting ring, a temporary storage tank is fixedly mounted in the mounting ring, and a trigger structure is mounted at the top of the supporting frame. The trigger structure comprises an extension frame, a lead screw, two limiting rods, a trigger switch and a motor, the temporary storage assembly is arranged, the remaining amount of foaming liquid in the storage tank can be clearly known by judging the moving distance of the storage tank, the situation that judgment is affected by external reasons is not likely to happen, and quantitative feeding can be achieved by adjusting the position of the switch.

Description

Technical Field

[0001] This utility model relates to the field of shoe sole production technology, specifically to an automatic injection device for shoe sole foam material. Background Technology

[0002] Automatic injection molding machines for foam materials for shoe soles are core equipment in the footwear manufacturing industry. They are mainly used to precisely inject foam materials (such as EVA, TPU, polyurethane, etc.) into shoe sole molds, forming lightweight and highly elastic shoe soles through chemical reactions or physical expansion.

[0003] A search revealed a utility model patent with Chinese patent publication number CN222201405U, which discloses an injection device for a linear box-type foaming line. The device includes a mixing tank, a first magnetic flux valve fixedly connected to the bottom center of the mixing tank, a measuring cylinder fixedly connected to the bottom of the first magnetic flux valve, an observation port on the front side of the measuring cylinder, a glass scale fixedly connected inside the observation port, a second magnetic flux valve fixedly connected to the bottom center of the measuring cylinder, and an extrusion cylinder fixedly connected to the bottom of the second magnetic flux valve.

[0004] The aforementioned device displays the remaining amount by setting up an observation port and a glass scale. However, the molten foam material is viscous, so when it flows through the scale, it will adhere to the outside of the scale. At this time, it will be difficult to clearly observe the internal condition of the measuring cylinder, indicating room for improvement. Utility Model Content

[0005] The purpose of this invention is to provide an automatic injection device for shoe sole foaming material to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic injection device for shoe sole foam material, comprising an installation platform, four support columns fixedly connected to the top outer wall of the installation platform, a common installation frame fixedly connected to one end of the top of the four support columns, a temporary storage component installed on the top of the installation frame, the temporary storage component comprising a support frame fixedly connected to one inner wall of the installation frame, a plurality of springs fixedly connected to the top outer wall of the support frame, a common installation ring fixedly connected to one end of the top of the plurality of springs, a temporary storage tank fixedly installed inside the installation ring, a triggering structure installed on the top of the support frame, the triggering structure comprising an extension frame, a lead screw, two limit rods, a trigger switch and a motor, and a feeding pipe slidably inserted into the feed pipe at the top of the temporary storage tank.

[0007] The remaining amount of foaming liquid in the storage tank can be determined by judging the distance it moves. This method is not easily affected by external factors. Furthermore, quantitative feeding can be achieved by adjusting the position of the switch. When the solenoid valve at the outlet of the external feeding device is closed, the extruder's drive mechanism starts, and the foaming liquid is conveyed into the mold. As the amount of foaming liquid in the storage tank decreases, its overall mass gradually decreases. The previously compressed spring returns to its length, and the mounting ring and storage tank are lifted and moved upward. Then, the mounting ring comes into contact with the trigger switch button, and the trigger switch transmits an electrical signal to the controller, which then controls the extruder to stop running.

[0008] As a further preferred embodiment of this technical solution, the extension frame is fixedly connected to the top outer wall of the support frame, the lead screw is rotatably connected between the extension frame and the support frame, the two limiting rods are fixedly connected between the extension frame and the support frame, the trigger switch is threaded onto the outside of the lead screw, the trigger switch is located above the mounting ring, the trigger switch is slidably sleeved on the outside of the two limiting rods, the motor is fixedly installed on the top outer wall of the extension frame, and the output end of the motor is coaxially fixed with one end of the top of the lead screw.

[0009] As a further preferred embodiment of this technical solution, a vertically arranged extruder is installed inside the mounting frame, the discharge pipe of the temporary storage tank is slidably inserted into the feed pipe of the extruder, and a solenoid valve is installed at the top of both the discharge pipe of the temporary storage tank and the external feed pipe.

[0010] As a further preferred embodiment of this technical solution, two stabilizing components are installed on the bottom of the outer walls on both sides of the mounting platform. Each stabilizing component includes an extension sleeve fixedly connected to one side of the outer wall of the mounting platform. A screw is threaded inside the extension sleeve, and a contact plate is rotatably sleeved at one end of the screw via a bearing.

[0011] If the ground is not level, the screw at the lower position can be adjusted. The screw is driven to rotate by the drive ring. During the rotation, the screw moves downward along the extension sleeve, thereby lifting the lower position of the device and ensuring that the overall state of the device is stable enough.

[0012] As a further preferred embodiment of this technical solution, a drive ring is coaxially fixed to the bottom of the outer circumference of the screw, and the diameter of the drive ring is larger than the diameter of the screw.

[0013] As a further preferred embodiment of this technical solution, each of the four support columns is slidably fitted with two connecting seats on its exterior, and each of the eight connecting seats has several through slots inside.

[0014] As a further preferred embodiment of this technical solution, the thread helix angle of the external threads of the lead screw and the screw rod is less than the equivalent friction angle.

[0015] As a further preferred embodiment of this technical solution, four vertically arranged guide rods are fixedly connected to the top outer wall of the support frame, and the mounting ring is slidably sleeved on the outside of the four guide rods.

[0016] This utility model provides an automatic injection device for shoe sole foam material, which has the following beneficial effects:

[0017] (1) By setting up a temporary storage component, the remaining amount of foaming liquid in the storage tank can be determined by judging the moving distance of the storage tank. It will not be easily affected by external factors and will not affect the judgment. Furthermore, quantitative feeding can be achieved by adjusting the position of the switch. When the solenoid valve of the discharge port of the external feeding device is closed, the drive structure of the extruder is started, and the foaming liquid is conveyed into the mold. As the foaming liquid in the temporary storage tank decreases, its overall mass gradually decreases. The spring that was originally compressed returns to its length, and the mounting ring and the temporary storage tank are lifted and moved upward. Then, the mounting ring contacts the trigger switch button part, and the trigger switch transmits an electrical signal to the controller, which then controls the extruder to stop running.

[0018] (2) By setting a stabilizing component, if the ground is not level, the screw at the lower position can be adjusted and driven by the drive ring to rotate. During the rotation, the screw moves downward along the extension sleeve, thereby lifting the lower position of the device and ensuring that the overall state of the device is stable enough. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0021] Figure 3 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0022] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point B;

[0023] In the diagram: 1. Mounting platform; 2. Support column; 3. Mounting frame; 4. Extruder; 5. Connecting seat; 6. Temporary storage assembly; 7. Stabilizing assembly; 601. Support frame; 602. Guide rod; 603. Spring; 604. Mounting ring; 605. Temporary storage tank; 606. Extension frame; 607. Lead screw; 608. Limiting rod; 609. Trigger switch; 610. Motor; 701. Extension sleeve; 702. Screw; 703. Contact plate; 704. Drive ring. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] This utility model provides a technical solution: such as Figure 2 and Figure 4 As shown in this embodiment, an automatic injection device for shoe sole foam material includes a mounting platform 1. Four support columns 2 are fixedly connected to the top outer wall of the mounting platform 1. The same mounting frame 3 is fixedly connected to one end of the top of the four support columns 2. A temporary storage component 6 is installed on the top of the mounting frame 3. The temporary storage component 6 includes a support frame 601 fixedly connected to the inner wall of one side of the mounting frame 3. Several springs 603 are fixedly connected to the top outer wall of the support frame 601. The same mounting ring 604 is fixedly connected to one end of the top of the several springs 603. A temporary storage tank 605 is fixedly installed inside the mounting ring 604. A triggering structure is installed on the top of the support frame 601. The triggering structure includes an extension frame 606, a lead screw 607, two limit rods 608, a trigger switch 609, and a motor 610. A feed pipe is slidably inserted into the feed pipe at the top of the temporary storage tank 605. Metal corrugated pipes are fixedly connected to the bottom of the feed pipe and the bottom of the discharge pipe of the temporary storage tank 605. The elastic deformation of the metal corrugated pipe can compensate for the relative movement between the pipes while maintaining the sealing performance.

[0026] The extension frame 606 is fixedly connected to the top outer wall of the support frame 601. The lead screw 607 is rotatably connected between the extension frame 606 and the support frame 601. The two limit rods 608 are fixedly connected between the extension frame 606 and the support frame 601. The trigger switch 609 is threaded on the outside of the lead screw 607. The trigger switch 609 is located above the mounting ring 604. The trigger switch 609 is slidably sleeved on the outside of the two limit rods 608. The motor 610 is fixedly installed on the top outer wall of the extension frame 606. The output end of the motor 610 is coaxially fixed with one end of the top of the lead screw 607.

[0027] like Figure 1 and Figure 2 As shown, a vertically arranged extruder 4 is installed inside the mounting frame 3. The discharge pipe of the temporary storage tank 605 is slidably inserted into the feed pipe of the extruder 4, and a solenoid valve is installed at the top of both the discharge pipe of the temporary storage tank 605 and the external feed pipe.

[0028] When the solenoid valve at the outlet of the external feeding device is closed, the drive mechanism of the extruder 4 starts, and the foaming liquid is conveyed into the mold. As the foaming liquid inside the temporary storage tank 605 decreases, its overall mass gradually decreases. The originally compressed spring 603 returns to its length, and the mounting ring 604 and the temporary storage tank 605 are lifted and moved upward. Then, the mounting ring 604 contacts the button part of the trigger switch 609. The trigger switch 609 transmits an electrical signal to the controller, which then controls the extruder 4 to stop running. If the model of the shoe sole changes, the motor 610 at the top of the extension frame 606 can be started, and the lead screw 607 is driven to rotate. The lead screw 607 can then drive the trigger switch 609 to move along the limit rod 608. At this time, the distance between the mounting ring 604 and the trigger switch 609 will change, and correspondingly, the amount of foaming liquid discharged from the temporary storage tank 605 will also change accordingly.

[0029] like Figure 2 and Figure 3 As shown, two stabilizing components 7 are installed on the bottom of the outer walls on both sides of the mounting platform 1. The stabilizing component 7 includes an extension sleeve 701 fixedly connected to the outer wall on one side of the mounting platform 1. A screw 702 is threaded inside the extension sleeve 701. A contact plate 703 is rotatably sleeved at one end of the bottom of the screw 702 through a bearing.

[0030] A drive ring 704 is coaxially fixed to the bottom of the outer circumference of the screw 702, and the diameter of the drive ring 704 is larger than the diameter of the screw 702.

[0031] If the ground is not level during the placement of the device, the screw 702 at the lower position can be adjusted. The screw 702 is driven to rotate by the drive ring 704. During the rotation, the screw 702 moves downward along the extension sleeve 701, thereby lifting the lower position of the device and ensuring that the overall state of the device is stable enough.

[0032] like Figure 1 and Figure 2 As shown, two connecting seats 5 are slidably sleeved on the outside of each of the four support columns 2. Several through slots are opened inside each of the eight connecting seats 5. The connecting seats 5 can be connected to the mold by passing the bolts through the through slots. Since the connecting seats 5 are slidably sleeved on the outside of the support columns 2, the movement of the mold can be more stable under the action of the support columns 2 when the two molds move.

[0033] like Figure 3 and Figure 4 As shown, the thread helix angle of the external threads of lead screw 607 and screw 702 is less than the equivalent friction angle, giving them self-locking properties.

[0034] like Figure 4As shown, four vertically arranged guide rods 602 are fixedly connected to the top outer wall of the support frame 601. The mounting ring 604 is slidably sleeved on the outside of the four guide rods 602, which helps to improve the stability of the mounting ring 604 and the temporary storage tank 605 during movement.

[0035] This utility model provides an automatic injection device for shoe sole foam material, the specific working principle of which is as follows:

[0036] When the device is working, the upper mold of the shoe sole mold can be fixed at the bottom of the extruder 4 outlet, and the lower mold can be fixed at the top of the electric telescopic rod inside the mounting platform 1, ensuring that the two molds are in a relative position. Then, the four top connecting seats 5 and the four bottom connecting seats 5 are fixed to the outside of the two molds respectively. Since the connecting seats 5 are slidably sleeved on the outside of the support column 2, the movement of the two molds can be more stable under the action of the support column 2. The heated and molten foaming material turns into a liquid state, and the solenoid valves of the external feeding pipe and the discharge pipe of the temporary storage tank 605 are opened. The foaming liquid first enters the temporary storage tank 605, and then enters the extruder 4 from the temporary storage tank 605. The solenoid valve at the outlet of the external feeding device is closed, and the drive mechanism of the extruder 4 starts. The foaming liquid is conveyed into the mold. As the amount of foaming liquid inside the temporary storage tank 605 decreases, its overall mass gradually decreases. The previously compressed spring 603 returns to its length, and the mounting ring 604 and the temporary storage tank 605 are lifted and moved upwards. Then, the mounting ring 604 contacts the button portion of the trigger switch 609, and the trigger switch 609 transmits an electrical signal to the controller (preferably model S7-200). The controller (SMART) will stop the extruder 4 from running. After the work is completed, it will open the solenoid valve of the external feed pipe and close the solenoid valve at the bottom of the temporary storage tank 605, allowing the foaming liquid to fill the temporary storage tank 605. If the shoe sole model changes, the motor 610 at the top of the extension frame 606 can be started, driving the lead screw 607 to rotate. The lead screw 607 will then drive the trigger switch 609 to move along the limit rod 608. At this time, the distance between the mounting ring 604 and the trigger switch 609 will change, and correspondingly, the amount of foaming liquid discharged from the temporary storage tank 605 will also change accordingly. During the placement of the device, if the ground is not level, the screw 702 at the lower position can be adjusted. The screw 702 will be driven to rotate by the drive ring 704. During the rotation, the screw 702 will move downward along the extension sleeve 701, thereby lifting the lower position of the device and ensuring that the overall state of the device is sufficiently stable.

[0037] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic injection device for shoe sole foam material, comprising an installation platform (1), characterized in that: Four support columns (2) are fixedly connected to the top outer wall of the mounting platform (1). The top one end of the four support columns (2) is fixedly connected to the same mounting frame (3). A temporary storage component (6) is installed on the top of the mounting frame (3). The temporary storage component (6) includes a support frame (601) fixedly connected to the inner wall of one side of the mounting frame (3). Several springs (603) are fixedly connected to the top outer wall of the support frame (601). The top one end of the several springs (603) is fixedly connected to the same mounting ring (604). A temporary storage tank (605) is fixedly installed inside the mounting ring (604). A trigger structure is installed on the top of the support frame (601). The trigger structure includes an extension frame (606), a lead screw (607), two limit rods (608), a trigger switch (609), and a motor (610). A feed pipe is slidably inserted into the feed pipe at the top of the temporary storage tank (605).

2. The automatic injection device for shoe sole foam material according to claim 1, characterized in that: The extension frame (606) is fixedly connected to the top outer wall of the support frame (601). The lead screw (607) is rotatably connected between the extension frame (606) and the support frame (601). The two limiting rods (608) are fixedly connected between the extension frame (606) and the support frame (601). The trigger switch (609) is threaded onto the outside of the lead screw (607). The trigger switch (609) is located above the mounting ring (604). The trigger switch (609) is slidably sleeved on the outside of the two limiting rods (608). The motor (610) is fixedly installed on the top outer wall of the extension frame (606). The output end of the motor (610) is coaxially fixed with one end of the top of the lead screw (607).

3. The automatic injection device for shoe sole foam material according to claim 1, characterized in that: The mounting frame (3) is equipped with a vertically arranged extruder (4). The discharge pipe of the temporary storage tank (605) is slidably inserted into the feed pipe of the extruder (4). A solenoid valve is installed at the top of both the discharge pipe of the temporary storage tank (605) and the external feed pipe.

4. The automatic injection device for shoe sole foaming material according to claim 1, characterized in that: Two stabilizing components (7) are installed on the bottom of the outer walls on both sides of the mounting platform (1). The stabilizing component (7) includes an extension sleeve (701) fixedly connected to the outer wall on one side of the mounting platform (1). The extension sleeve (701) is threaded with a screw (702) inside. One end of the screw (702) is fitted with a contact plate (703) through a bearing.

5. An automatic injection device for shoe sole foaming material according to claim 4, characterized in that: A drive ring (704) is coaxially fixed to the bottom of the outer circumference of the screw (702), and the diameter of the drive ring (704) is larger than the diameter of the screw (702).

6. The automatic injection device for shoe sole foam material according to claim 1, characterized in that: Each of the four support columns (2) is slidably fitted with two connecting seats (5), and each of the eight connecting seats (5) has several through slots inside.

7. The automatic injection device for shoe sole foaming material according to claim 1, characterized in that: The thread helix angle of the external threads of the lead screw (607) and the screw (702) is less than the equivalent friction angle.

8. The automatic injection device for shoe sole foam material according to claim 1, characterized in that: The support frame (601) has four vertically arranged guide rods (602) fixedly connected to its top outer wall, and the mounting ring (604) is slidably sleeved on the outside of the four guide rods (602).

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