Sponge foaming mixing device

Abstract

The utility model discloses a sponge foaming mixing device which comprises a feeding mixing die head, a plurality of needle valves, a needle valve driving mechanism and a stirring mechanism, the needle valves are connected with the feeding mixing die head in an inserted mode, and the feeding mixing die head is provided with an independent feeding channel and an independent returning channel corresponding to each needle valve. The feeding channel and the returning channel correspond to feeding holes and returning holes of the needle valves respectively, the feeding mixing die head is provided with a mixing cavity, injection holes of the needle valves are communicated with the mixing cavity, the stirring mechanism is arranged in the mixing cavity, and the needle valve driving mechanism drives the needle valves to be opened or closed in a linkage mode. The mixing proportion of different raw materials can be accurately controlled, the matching of mixed feed liquid is fixed, the proportion is accurate, the raw materials can enter the mixing cavity at the same time, the feeding uniformity of the raw materials is ensured, the raw materials with different components are fully mixed, and the uniformity and quality of the mixed feed liquid are ensured; the produced sponge product can be uniformly foamed from the head part to the tail part, the quality is stable, and the performance is excellent.

Description

Technical Field

[0001] The utility model relates to the technical field of sponge production, in particular to a sponge foaming and mixing device. Background Art

[0002] Sponge is a porous material, which is usually formed by mixing polyether polyol, isocyanate, tertiary amine catalyst, organic tin catalyst, foam stabilizer, cross-linking agent and other additives together and foaming. It is widely used in the production of various soft furniture, and can also be used to make various shoe materials, sofas, sponge mattresses, bay window mats, tatami mats, sports safety protection mats, etc. It can also be used as positioning packaging for products such as ceramics, precision instruments, and cosmetics. On the existing production line equipment for continuous production of sponges, the mixed raw materials are usually put on the conveyor belt for foaming, and then conveyed by the conveyor belt through the baking device and the cotton collecting device in sequence, so as to realize the continuous production of sponges. When mixing, the raw materials are usually drawn from the raw material barrel to the mixing head. Due to the different distribution positions of the raw material tanks and the different times of entering the mixing head, the material feeding is uneven, and the various raw materials are unevenly mixed, which easily causes the foaming of the sponge head produced to be uneven. The sponge head that needs to be cut during shaping is long, causing great waste. Utility Model Content

[0003] The purpose of the utility model is to provide a sponge foaming and mixing device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sponge foaming mixing device, the mixing device comprising a feed mixing die head, a needle valve, a needle valve driving mechanism and a stirring mechanism, the needle valve comprising a plurality of needle valves, the plurality of needle valves are plug-connected to the feed mixing die head, the feed mixing die head is provided with an independent feed channel and return channel for each needle valve, the feed channel and return channel respectively correspond to the feed hole and return hole of the needle valve, the feed mixing die head is provided with a mixing chamber, the injection hole of the needle valve is connected to the mixing chamber, the stirring mechanism is arranged in the mixing chamber, and the needle valve driving mechanism drives each needle valve to be linked to open or close.

[0005] Furthermore, the feed channel includes a main material feed channel and an auxiliary material feed channel, the return channel includes a main material return channel and an auxiliary material return channel, the caliber of the main material feed channel is larger than the caliber of the auxiliary material feed channel, and the caliber of the main material return channel is larger than the caliber of the auxiliary material return channel.

[0006] Furthermore, a plurality of auxiliary material feed channels and auxiliary material return channels are arranged in sequence on both sides of the main material feed channel and the main material return channel respectively.

[0007] Furthermore, the feed mixing die head is a polygonal cylindrical structure, the feed channel and the return channel are arranged on the end face of the feed mixing die head, the outer side surface of the feed mixing die head is provided with an insertion interface for inserting a needle valve, and the feed mixing die head is penetrated by a through hole, and the through hole forms a mixing chamber of the feed mixing die head.

[0008] Furthermore, the feed channel and the return channel are arranged on the upper end surface of the feed mixing die head, and the plug ports are arranged in two rows, and the two rows of plug ports are arranged up and down.

[0009] Furthermore, the upper and lower rows of sockets are staggered with each other.

[0010] Furthermore, the stirring mechanism includes a stirring shaft and a stirring paddle arranged on the stirring shaft.

[0011] Furthermore, the needle valve includes a valve seat, a valve core, a spring sleeve, a spring, an injection hole, a feed hole and a reflux hole.

[0012] Furthermore, the mixing device also includes a cleaning valve, and the feed mixing die head is provided with a cleaning liquid channel.

[0013] Furthermore, the cleaning valve includes a valve body, a check valve core, an air inlet cavity and a cleaning hole.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the feed mixing die head of the utility model is equipped with multiple needle valves, which can accurately control the mixing ratio of different raw materials, so that the mixed liquid is matched and fixed, and the ratio is accurate. The needle valve driving mechanism drives the needle valves to open in linkage, so that the raw materials can enter the mixing chamber at the same time, ensuring the uniformity of raw material feeding. The stirring mechanism fully mixes the raw materials of different components to ensure the uniformity and quality of the mixed liquid, so that the sponge products produced can achieve uniform foaming from head to tail, with stable quality and excellent performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the sponge foaming and mixing device of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the feeding mixing die head in the sponge foaming mixing device of the utility model;

[0017] Figure 3 This is a schematic diagram of the needle valve structure in the sponge foaming and mixing device of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of a cleaning valve in the sponge foaming and mixing device of the utility model;

[0019] In the figure, 1-feed mixing die head, 11-plug interface, 12-main material feed channel, 13-auxiliary material feed channel, 14-main material return channel, 15-auxiliary material return channel, 16-mixing chamber, 17-cleaning liquid channel, 2-needle valve, 21-valve seat, 22-valve core, 23-spring sleeve, 24-spring, 25-injection hole, 26-feed hole, 27-reflux hole, 31-stirring shaft, 32-stirring paddle, 4-cleaning valve, 41-valve body, 42-check valve core, 43-inlet chamber, 44-cleaning hole. DETAILED DESCRIPTION

[0020] The feed mixing die head comprises an upper die head and a lower die head, wherein the lower surface of the upper die head and the upper surface of the lower die head are compositely connected.

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1 to Figure 4As shown, this embodiment provides a sponge foaming mixing device, the mixing device includes a feed mixing die head 1, a needle valve 2, a needle valve driving mechanism, a stirring mechanism and a cleaning valve 4, the feed mixing die head 1 is a polygonal cylindrical structure, the needle valve 2 includes a valve seat 21, a valve core 22, a spring sleeve 23, a spring 24, an injection hole 25, a feed hole 26 and a reflux hole 27, the needle valve 2 includes a plurality of needle valves 2, and the plurality of needle valves 2 are plug-connected to the feed mixing die head 1, and the outer side surface of the feed mixing die head 1 is provided with an insertion port 11 for inserting the needle valve 2, and the insertion port 11 can be determined according to the required number of raw materials, for example, two rows can be set, Two rows of plug interfaces 11 are arranged up and down, and the upper and lower rows of plug interfaces 11 are staggered with each other. The feed mixing die head 1 should be equipped with an independent feed channel and return channel for each needle valve 2, and the feed channel and return channel correspond to the feed hole 26 and return hole 27 of the needle valve 2 respectively. The feed channel and return channel are arranged on the upper end surface of the feed mixing die head 1, and the feed channel includes a main material feed channel 12 and an auxiliary material feed channel 13, and the return channel includes a main material return channel 14 and an auxiliary material return channel 15. The caliber of the main material feed channel 12 is larger than the caliber of the auxiliary material feed channel 14, and the caliber of the main material return channel 13 is The diameter of the auxiliary material return channel 15 is larger than that of the auxiliary material return channel 15, which can better control and balance the ratio of the main material to the auxiliary material, ensure the supply balance of the main material and the auxiliary material, and improve the stability and consistency of the mixed liquid. The multiple auxiliary material feed channels 13 and the auxiliary material return channels 15 are respectively arranged on both sides of the main material feed channel 12 and the main material return channel 14 in sequence, so that the entire device structure is compact and saves space. A through hole is penetrated in the middle of the feed mixing die head 1, and the through hole forms a mixing chamber 16 of the feed mixing die head 1. The injection hole 25 of the needle valve 2 is connected to the mixing chamber 16. The stirring mechanism is arranged in the mixing chamber 16, and the stirring mechanism includes The stirring shaft 31 and the stirring paddle 32 arranged on the stirring shaft 31, the stirring mechanism is the existing technology and will not be described in detail here. The feed mixing die head 1 is provided with a cleaning liquid channel 17. For the convenience of setting, the cleaning liquid channel 17 can be any of the above-mentioned auxiliary material feed channels. The cleaning valve 4 is correspondingly inserted in the corresponding plug-in interface 11. The cleaning valve 4 includes a valve body 41, a check valve core 42, an air intake cavity 43 and a cleaning hole 44. The cleaning hole 44 is connected to the mixing cavity 16. The needle valve driving mechanism drives each needle valve 2 to be linked to open or close. The needle valve driving mechanism is the existing technology, for example, PLC linkage can be adopted, which will not be described in detail here.

[0023] During foaming, the needle valve driving mechanism drives the valve core 22 of each needle valve 2 to move outward, and the cylindrical surface of the valve core covers the return hole 27. The main material and the auxiliary material enter the feed hole 26 and are injected into the mixing chamber 15 through the injection hole 25 at the same time to achieve the mixing of the raw materials. The stirring shaft drives the stirring paddle to rotate, so that the raw materials are mixed evenly. When the air source is removed, the valve core 22 and the injection hole 25 are closed under the action of the spring 24. At this time, the main material and the auxiliary material are passed from the feed hole 26 to the return hole 27 through the triangular cross-section of the valve core 22 head, and then passed through the feed mixing mold. The return channel on the head 1 flows back to each raw material tank to realize the reflux process, and the evenly mixed mixed liquid is put onto the conveyor belt for foaming, and then is sequentially conveyed by the conveyor belt through the baking device and the cotton collecting device, thereby realizing the continuous production of sponge; and when cleaning is required, the gas enters the air inlet chamber 43, the check valve core 42 moves outward, and the cleaning liquid enters the mixing chamber 16 of the feed mixing die head 1 through the cleaning hole 44 to realize the cleaning action. When the external air is interrupted, the check valve core 42 is closed under the action of the compression spring, and the cleaning is terminated.

[0024] The feed mixing die head of the utility model is equipped with multiple needle valves, which can accurately control the mixing ratio of different raw materials, so that the mixed liquid is matched and fixed, and the ratio is accurate. The needle valve driving mechanism drives the needle valves to open in linkage, so that the raw materials can enter the mixing chamber at the same time, ensuring the uniformity of raw material feeding. The stirring mechanism fully mixes the raw materials of different components to ensure the uniformity and quality of the mixed liquid, so that the produced sponge products can achieve uniform foaming from head to tail, with stable quality and excellent performance.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sponge foaming and mixing device, characterized in that: The mixing device includes a feed mixing die head, a needle valve, a needle valve driving mechanism and a stirring mechanism. The needle valve includes multiple needle valves, which are plug-connected to the feed mixing die head. The feed mixing die head is equipped with an independent feed channel and return channel for each needle valve. The feed channel and return channel correspond to the feed hole and return hole of the needle valve respectively. The feed mixing die head is provided with a mixing cavity. The injection hole of the needle valve is connected to the mixing cavity. The stirring mechanism is arranged in the mixing cavity. The needle valve driving mechanism drives each needle valve to open or close in linkage.

2. The sponge foaming and mixing device according to claim 1, characterized in that: The feed channel includes a main material feed channel and an auxiliary material feed channel, and the return channel includes a main material return channel and an auxiliary material return channel. The diameter of the main material feed channel is larger than that of the auxiliary material feed channel, and the diameter of the main material return channel is larger than that of the auxiliary material return channel.

3. The sponge foaming and mixing device according to claim 2, characterized in that: A plurality of auxiliary material feeding channels and auxiliary material returning channels are sequentially arranged on both sides of the main material feeding channel and the main material returning channel.

4. The sponge foaming and mixing device according to claim 1 or 2, characterized in that: The feed mixing die head is a polygonal cylindrical structure, the feed channel and the return channel are arranged on the end face of the feed mixing die head, the outer side surface of the feed mixing die head is provided with an insertion port for inserting a needle valve, and the feed mixing die head is penetrated by a through hole, and the through hole forms a mixing chamber of the feed mixing die head.

5. The sponge foaming and mixing device according to claim 4, characterized in that: The feed channel and the return channel are arranged on the upper end surface of the feed mixing die head, and the plug ports are arranged in two rows, which are arranged up and down.

6. The sponge foaming and mixing device according to claim 5, characterized in that: The upper and lower rows of sockets are staggered.

7. The sponge foaming and mixing device according to claim 1, characterized in that: The stirring mechanism includes a stirring shaft and a stirring paddle arranged on the stirring shaft.

8. The sponge foaming and mixing device according to claim 1, characterized in that: The needle valve comprises a valve seat, a valve core, a spring sleeve, a spring, a material injection hole, a material feed hole and a reflux hole.

9. The sponge foaming and mixing device according to claim 1, characterized in that: The mixing device further comprises a cleaning valve, and the feed mixing die head is provided with a cleaning liquid channel.

10. The sponge foaming and mixing device according to claim 9, characterized in that: The cleaning valve comprises a valve body, a check valve core, an air inlet cavity and a cleaning hole.

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