A slow rebound material extrusion with blowing agent injection assembly

Abstract

The utility model discloses a kind of foaming agent injection assemblies for slow-rebound material extrusion, including mixing cavity, the lateral installation of mixing cavity initial end has feed channel, the top end fixedly connected with cavity of mixing cavity initial end, the injection pipe is fixedly connected on the cavity upper end.The utility model is connected by setting baffle in cavity, when needing to inject foaming agent in injection pipe into mixing cavity, it can be stretched outward under the transmission of screw rod and guide rod to make baffle, and when plugging, reverse rotation screw rod makes baffle reset, operation is simple and plugging effect is better, the limit slot and the clamping groove of setting make baffle more stable when moving and stationary, setting spiral conveying assembly two in injection pipe, orderly foaming agent is injected into mixing cavity, setting conical dispersion head and discharge hole in injection pipe bottom, so that foaming agent disperses and falls, further improve the mixing uniformity of foaming agent and base material in mixing cavity.

Description

Technical Field

[0001] This utility model relates to the technical field of polymer material processing equipment, specifically to a foaming agent injection component for extruding slow rebound materials. Background Technology

[0002] Slow rebound material is a polyurethane polymer with an open-cell structure. This material has significant viscoelastic properties, exhibits very soft material characteristics, and has a strong impact energy absorption capacity. During the processing of slow rebound material, the foaming agent needs to be mixed with the base material and then extruded after thorough mixing.

[0003] The prior art, disclosed in patent document CN220808246U, provides the following technical solution: a foaming agent injection device for the production of high-foaming polyethylene sheets, comprising an extrusion tube, a second spiral blade rotatably mounted inside the extrusion tube, a first motor being driven to one end of the second spiral blade, a feeding pipe being connected to the top end of the extrusion tube, an injection pipe being connected to one side of the extrusion tube, and a mixing component being fixed to the side of the second spiral blade near the injection pipe.

[0004] The above technical solution requires rotating the first spiral blade to detach the connecting plate and the crescent blade from the connecting pipe for material feeding. However, when the foaming agent in the storage pipe does not need to be fed into the injection pipe, the rotating first spiral blade cannot effectively block the connecting pipe, making operation inconvenient. Utility Model Content

[0005] The purpose of this invention is to provide a foaming agent injection component for extruding slow-rebound materials, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a foaming agent injection assembly for extruding slow rebound materials, comprising a mixing chamber, a feeding channel installed on the side of the beginning of the mixing chamber, a cavity fixedly connected to the top of the beginning of the mixing chamber, and an injection pipe fixedly connected to the upper end of the cavity.

[0007] Limiting grooves are provided on the front and rear inner walls of the cavity. A through groove is provided at the left end of the cavity, and the limiting groove is provided on one side through the through groove. A snap-fit ​​groove is provided at the right end of the cavity. A frame-shaped sealing gasket is provided on the outer surface of the through groove. Limiting plates are slidably connected to the inner walls of the limiting grooves. A baffle is fixedly connected between the front and rear limiting plates. One end of the baffle passes through the through groove and the other end is snapped into the snap-fit ​​groove.

[0008] In the above technical solution, the limiting groove and the snap-fit ​​groove make the baffle more stable when moving and stationary.

[0009] The outer surfaces of both ends of the cavity are fixedly connected to mounting frames. The front mounting frame has a threaded rod inside through a bearing, and the rear mounting frame has a guide rod fixedly connected inside. The outer walls of the threaded rod and the guide rod are fitted with movable blocks. The outer sides of the movable blocks are fixedly connected to connecting pull plates. The connecting pull plates extend to the through slot and connect to the front and rear ends of the outer side of the baffle.

[0010] In the above technical solution, a baffle is snapped into place inside the cavity. When it is necessary to inject the foaming agent in the injection pipe into the mixing cavity, the baffle can be stretched outward under the drive of the threaded rod and the guide rod. When sealing, the threaded rod is rotated in the opposite direction to reset the baffle. The operation is simple and the sealing effect is good.

[0011] As a further preferred embodiment of this technical solution, a spiral conveying assembly is installed inside the mixing chamber for mixing and extruding the foaming agent with the substrate.

[0012] As a further preferred embodiment of this technical solution, a spiral conveying assembly II is installed inside the injection pipe for conveying the foaming agent.

[0013] As a further preferred embodiment of this technical solution, both ends of the top side of the injection tube are provided with inlet ports, and each inlet port is fitted with a sealing cover plate.

[0014] In the above technical solution, a sealing cover is installed inside the feed inlet, which can reduce the entry of debris into the interior when the machine is stopped.

[0015] As a further preferred embodiment of this technical solution, a conical dispersing head is fixedly connected to the bottom of the cavity, and a discharge hole is provided on the surface of the conical dispersing head.

[0016] In the above technical solution, a conical dispersing head and a discharge hole are set at the bottom of the injection pipe, so that the foaming agent is dispersed and falls, further improving the uniformity of mixing of the foaming agent and the substrate in the mixing chamber.

[0017] As a further preferred embodiment of this technical solution, a drive structure is installed at one end of the threaded rod, and the drive structure is set on the top side of the mixing chamber by screws.

[0018] As a further preferred embodiment of this technical solution, a scraper is fixedly connected to the inner wall of the cavity near the through groove end, and when the baffle moves, the scraper slides into contact with the baffle.

[0019] In the above technical solution, the scraper can scrape off the foaming agent on the outwardly stretched baffle, preventing excessive accumulation at the groove and leakage.

[0020] This utility model provides a foaming agent injection component for extruding slow-rebound materials, which has the following beneficial effects:

[0021] (1) This utility model uses a baffle that is snapped into the cavity. When the foaming agent in the injection pipe needs to be injected into the mixing cavity, the baffle can be stretched outward under the transmission of the threaded rod and the guide rod. When sealing, the threaded rod is rotated in the opposite direction to reset the baffle. The operation is simple and the sealing effect is good. The limiting groove and snapping groove make the baffle more stable when moving and stationary. The scraper can scrape off the foaming agent on the outwardly stretched baffle to prevent excessive accumulation at the groove and leakage.

[0022] (2) This utility model provides a spiral conveying component 2 in the injection pipe to orderly inject the foaming agent into the mixing chamber. A conical dispersing head and a discharge hole are provided at the bottom of the injection pipe to disperse and fall the foaming agent, thereby further improving the uniformity of mixing between the foaming agent and the substrate in the mixing chamber. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a partial cross-sectional view of the present invention;

[0025] Figure 3 This is an enlarged view of Figure A of this utility model;

[0026] Figure 4 This is a schematic diagram of the internal structure of the cavity of this utility model;

[0027] Figure 5 This is an enlarged view of Figure B of this utility model;

[0028] In the diagram: 1. Mixing chamber; 2. Feeding channel; 3. Injection pipe; 4. Container cavity; 5. Conical dispersing head; 6. Discharge hole; 11. Screw conveyor assembly one; 31. Screw conveyor assembly two; 32. Feed inlet; 33. Sealing cover plate; 41. Mounting frame; 42. Threaded rod; 43. Guide rod; 44. Movable block; 45. Connecting pull plate; 46. Baffle; 47. Limiting plate; 48. Scraper; 49. Drive structure; 461. Limiting groove; 462. Snap-fit ​​groove; 463. Through groove; 464. Frame-shaped sealing gasket. Detailed Implementation

[0029] 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.

[0030] This utility model provides a technical solution: such as Figure 1 As shown in this embodiment, a foaming agent injection assembly for extruding slow rebound material includes a mixing chamber 1. A spiral conveying assembly 11 is installed inside the mixing chamber 1 for mixing the foaming agent with the substrate and extruding it. A feeding channel 2 is installed on the side of the beginning of the mixing chamber 1.

[0031] like Figure 2 As shown, an injection pipe 3 is fixedly connected to the upper end of the cavity 4. A screw conveyor assembly 31 is installed inside the injection pipe 3 for conveying the foaming agent. Both ends of the top side of the injection pipe 3 are provided with inlet ports 32, and sealing cover plates 33 are embedded in the inlet ports 32. The sealing cover plates 33 are installed inside the inlet ports 32 to reduce the entry of foreign matter into the interior when the machine is stopped. The screw conveyor assembly 31 is installed inside the injection pipe 3 to orderly inject the foaming agent into the mixing chamber 1.

[0032] like Figure 3-5 As shown, a cavity 4 is fixedly connected to the top of the mixing chamber 1, and a conical dispersing head 5 is fixedly connected to the bottom of the cavity 4. A discharge hole 6 is opened on the surface of the conical dispersing head 5. The conical dispersing head 5 and the discharge hole 6 are set at the bottom of the injection pipe 3, so that the foaming agent is dispersed and falls, further improving the mixing uniformity of the foaming agent and the substrate in the mixing chamber 1. Limiting grooves 461 are opened on the front and rear inner walls of the cavity 4. A through groove 463 is opened through the left end of the cavity 4, and one side of the limiting groove 461 is through the through groove 463. A snap-fit ​​groove 462 is opened on the right end of the cavity 4. A frame-shaped sealing gasket 464 is provided on the outer surface of the through groove 463. Limiting plates 47 are slidably connected to the inner walls of the limiting groove 461. A baffle 46 is fixedly connected between the front and rear limiting plates 47. One end of the baffle 46 passes through the through groove 463 and the other end is snapped into the snap-fit ​​groove 462. Mounting frames are fixedly connected to the outer surfaces of the front and rear ends of the cavity 4. 41. A threaded rod 42 is provided inside the front mounting frame 41 via a bearing. A drive structure 49 is installed at one end of the threaded rod 42. The drive structure 49 is set on the top side of the mixing chamber 1 by screws. A guide rod 43 is fixedly connected inside the rear mounting frame 41. Movable blocks 44 are sleeved on the outer walls of both the threaded rod 42 and the guide rod 43. Connecting pull plates 45 are fixedly connected to the outer sides of the movable blocks 44. The connecting pull plates 45 extend to the through groove 463 and are connected to the front and rear ends of the outer side of the baffle 46. By snapping the baffle 46 into the cavity 4, when the foaming agent in the injection pipe 3 needs to be injected into the mixing chamber 1, the baffle 46 can be stretched outward under the drive of the threaded rod 42 and the guide rod 43. When sealing, the threaded rod 42 is rotated in the opposite direction to reset the baffle 46. The operation is simple and the sealing effect is good. The limiting groove 461 and the snapping groove 462 make the baffle 46 more stable when moving and stationary.

[0033] like Figure 5 As shown, a scraper 48 is fixedly connected to the inner wall of the cavity 4 near the through groove 463. When the baffle 46 moves, the scraper 48 slides in contact with the baffle 46. The scraper 48 can scrape off the foaming agent on the outwardly stretched baffle 46 to prevent excessive accumulation at the through groove 463 and leakage.

[0034] This utility model provides a foaming agent injection component for extruding slow rebound materials. The specific working principle is as follows: During operation, the foaming agent enters the injection pipe 3 through the inlet 32 ​​and falls through the screw conveyor component 31. Simultaneously, the drive structure 49 is activated, driving the bevel gear set, which in turn rotates the threaded rod 42. This causes the movable block 44 to move on the threaded rod 42 and the guide rod 43, thereby pulling the baffle 46 out of the cavity 4 through the connecting pull plate 45, allowing the limiting plate 47 to slide within the limiting groove 461. The foaming agent falls into the conical dispersing head 5 and is dispersed into the mixing chamber 1 through the outlet hole 6. Simultaneously, the substrate is injected into the feed channel 2. Activating the screw conveyor component 11 mixes the foaming agent with the substrate and extrudes it. When foaming agent injection is not required, the threaded rod 42 can be rotated in the reverse direction, causing the connecting pull plate 45 to pull the baffle 46 back to its original position until one end of the baffle 46 is engaged within the baffle 462, facilitating sealing operations.

[0035] 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. A foaming agent injection assembly for extruding slow-rebound materials, comprising a mixing chamber (1), characterized in that: A feeding channel (2) is installed on the side of the beginning of the mixing chamber (1), and a cavity (4) is fixedly connected to the top of the beginning of the mixing chamber (1). An injection pipe (3) is fixedly connected to the upper end of the cavity (4). The cavity (4) has a limiting groove (461) on both the front and rear inner walls. The cavity (4) has a through groove (463) on the left end, and the limiting groove (461) is connected to the through groove (463) on one side. The cavity (4) has a snap-fit ​​groove (462) on the right end. The outer surface of the through groove (463) is provided with a frame-shaped sealing gasket (464). The inner wall of the limiting groove (461) is slidably connected to a limiting plate (47). A baffle (46) is fixedly connected between the two limiting plates (47). One end of the baffle (46) passes through the through groove (463) and the other end is snapped into the snap-fit ​​groove (462). The outer surfaces of the front and rear ends of the cavity (4) are fixedly connected to the mounting frame (41). The front mounting frame (41) has a threaded rod (42) inside through a bearing. The rear mounting frame (41) has a guide rod (43) fixedly connected inside. The outer walls of the threaded rod (42) and the guide rod (43) are fitted with movable blocks (44). The outer sides of the movable blocks (44) are fixedly connected with connecting pull plates (45). The connecting pull plates (45) extend to the through groove (463) and are connected to the front and rear ends of the outer side of the baffle (46).

2. The foaming agent injection assembly for extruding slow-rebound materials according to claim 1, characterized in that: The mixing chamber (1) is equipped with a spiral conveying assembly (11) for mixing the foaming agent with the substrate and extruding it.

3. The foaming agent injection assembly for extruding slow-rebound materials according to claim 1, characterized in that: The injection pipe (3) is equipped with a spiral conveying assembly (31) for conveying foaming agent.

4. The foaming agent injection assembly for extruding slow-rebound materials according to claim 1, characterized in that: Both ends of the top side of the injection tube (3) are provided with inlet ports (32), and each inlet port (32) is fitted with a sealing cover plate (33).

5. The foaming agent injection assembly for extruding slow-rebound materials according to claim 1, characterized in that: The bottom of the cavity (4) is fixedly connected to a conical dispersing head (5), and the surface of the conical dispersing head (5) is provided with a discharge hole (6).

6. The foaming agent injection assembly for extruding slow-rebound materials according to claim 1, characterized in that: The threaded rod (42) is equipped with a drive structure (49) at one end, and the drive structure (49) is set on the top side of the mixing chamber (1) by screws.

7. The foaming agent injection assembly for extruding slow-rebound materials according to claim 1, characterized in that: A scraper (48) is fixedly connected to the inner wall of the cavity (4) near the through groove (463). When the baffle (46) moves, the scraper (48) slides in contact with the baffle (46).

Images