Self-cleaning discharging machine head and self-cleaning method thereof

Abstract

The invention discloses a self-cleaning discharging machine head which comprises a power device, a stirring block, a lifting mechanism, a mixing cavity base, a plurality of feeding mechanisms and a rack, the power device is connected with the stirring block and the lifting mechanism, the lifting mechanism and the mixing cavity base are both installed on the rack, the mixing cavity base is provided with a mixing cavity, and the feeding mechanisms are arranged in the mixing cavity. The stirring block extends into the mixing cavity, and a plurality of feeding mechanisms are connected with the mixing cavity base and are respectively communicated with the mixing cavity. According to the machine head, the power device can drive the stirring block to rotate, the stirring block can stir materials in the mixed material cavity, the stirring block can ascend and descend to play a role similar to pressurization of a piston, it is guaranteed that the materials can be ejected out of the mixed material cavity as much as possible, and when needed, the materials can be ejected out of the mixed material cavity by means of increasing the rotating speed and moving up and down of the stirring block. And the cleaning liquid and the materials can be further pressurized and thrown out, and the mixed material cavity is scraped, so that residues of the cleaning liquid and the materials in the machine head can be effectively reduced, and self-cleaning is realized.

Description

Technical Field

[0001] The present invention relates to the field of sole design, and particularly to a self-cleaning discharging head and a self-cleaning method thereof. Background Art

[0002] Shoes are a common product, which can be used for foot protection, decoration, etc. The sole is a key component of shoes, which has an important impact on the performance of shoes such as comfort and lifespan. There are many methods for manufacturing soles. In order to ensure production efficiency and adapt to automated production, many soles now use mold production. Specifically, PU material is injected into the mold, and then the above-mentioned material is foamed in the mold to obtain the sole.

[0003] Injecting the material into the mold usually needs to be realized through the discharging head of the injection machine. However, after injection, common discharging heads often leave a large amount of material in the discharging head. If this material is not cleaned in time, it is easy to be fixed in the discharging head after cooling, causing blockage of the discharging head and affecting the use of the discharging head. Therefore, after each injection, a cleaning material is used to clean the discharging head. However, even when using the cleaning material for cleaning, on the one hand, it is difficult to ensure the cleaning effect, and the consumption of the cleaning liquid is large. On the other hand, the cleaning material is also easy to remain in the discharging head, affecting the next processing. Summary of the Invention

[0004] The purpose of the present invention is to provide a self-cleaning discharging head and a self-cleaning method thereof, which can solve one or more of the above problems.

[0005] According to one aspect of the present invention, there is provided a self-cleaning discharging head, including a power device, a stirring block, a lifting mechanism, a mixing cavity base, a plurality of feeding mechanisms and a frame. The power device is connected to the stirring block, the power device is connected to the lifting mechanism, the lifting mechanism and the mixing cavity base are both installed on the frame. The mixing cavity base is provided with a mixing material cavity, the stirring block extends into the mixing material cavity, and the plurality of feeding mechanisms are connected to the mixing cavity base and are respectively communicated with the mixing material cavity.

[0006] The beneficial effects of the self-cleaning discharging head are as follows: Different feeding mechanisms in this head can be used for feeding various materials, enabling the required materials to be conveyed to the mixing material cavity through it. The power device can drive the stirring block to rotate, and the stirring block can stir the materials in the mixing material cavity. At the same time, the lifting mechanism can also make the stirring block rise and fall, performing an effective pressurizing action similar to a piston action to ensure that the materials can be ejected from the mixing material cavity as much as possible, thereby effectively reducing the residue of the materials in this head. Moreover, any feeding mechanism can also be used for conveying the cleaning liquid. Thus, during cleaning, the cleaning liquid can be conveyed to the mixing material cavity and, relying on increasing the rotation speed of the stirring block and the up-and-down movement of the lifting mechanism, the cleaning liquid can be highly stirred inside to ensure the cleaning effect and can be quickly ejected under pressure after cleaning, avoiding the residue of the cleaning liquid in the mixing material cavity, achieving self-cleaning. It can be realized without stopping the machine or disassembling, with good cleaning effect, saving the use of cleaning liquid, and not being prone to residue, ensuring the reliability of the next processing.

[0007] In some embodiments, the lifting mechanism includes a guide rail, a slider, and a base. The guide rail is fixedly installed on the frame, the slider is slidably sleeved on the guide rail, the base is connected to the slider, and the base is sleeved on the power device. The guide rail can guide the movement of the slider.

[0008] In some embodiments, the mixing cavity base includes a seat body, a nozzle, and an inner sleeve. The inner sleeve is embedded in the seat body, the nozzle is connected to the seat body, the mixing material cavity passes through the inner sleeve and the nozzle, and an inclined portion is formed in the nozzle. The setting of the inclined portion can achieve a pressurizing effect by gradually reducing the cross-sectional area of the mixing material cavity.

[0009] In some embodiments, the stirring block is provided with an inclined section, and the inclined section can be arranged inside the inclined portion. The setting of the inclined section can enable the stirring block to better match the inclined portion for use.

[0010] In some embodiments, the mixing cavity base includes a sealing ring. One end of the inner sleeve extends from the seat body and is sleeved with a sealing ring, and the sealing ring is embedded in the nozzle. The sealing ring can seal the junction of the inclined portion and the non-inclined portion of the mixing material cavity.

[0011] In some embodiments, the side of the stirring block is provided with thread-like protrusions. When the stirring block rotates, the setting of the thread-like protrusions can not only generate a downward force on the materials in the mixing material cavity to ensure that the materials can be better ejected from the bottom of the mixing material cavity, but also the thread-like protrusions can achieve a pressurizing effect. Additionally, during the cleaning process, the stirring block can move up and down, enabling the thread-like protrusions to conveniently scrape the inner wall of the mixing material cavity to reduce the adhesion of materials or cleaning liquid on the inner wall, ensuring the cleaning effect and reducing residue.

[0012] In some embodiments, the stirring block is provided with a groove on the threaded protrusion. The setting of the groove can form a certain cutting surface on the threaded protrusion, so as to improve the stirring effect.

[0013] In some embodiments, the feeding mechanism includes a piston, a piston rod and a valve block. A feeding channel is provided in the feeding mechanism. The piston is sleeved on the piston rod and is slidably arranged in the valve block. The mixing chamber base is provided with a channel, and the channel is communicated with the feeding channel. The piston rod passes through the feeding channel and extends into the channel. The channel is communicated with the mixing material chamber, and the piston rod can seal the communication between the channel and the mixing material chamber. The arrangement of the piston rod and the piston can facilitate the formation of a closed or open state for the communication between the channel and the mixing material chamber, and is convenient for closing the channel when the feeding material or cleaning liquid is not needed, so as to control the feeding timing of the material or cleaning liquid.

[0014] According to one aspect of the present invention, a self-cleaning method for a self-cleaning discharge head is provided, which is characterized by including the following steps:

[0015] Inject cleaning liquid into the mixing material chamber,

[0016] Increase the output of the power device so that the rotation speed of the stirring block increases,

[0017] Make the power device reciprocally move up and down through the lifting mechanism, so that the stirring block can move up and down in the mixing material chamber.

[0018] The beneficial effect of the self-cleaning method of the self-cleaning discharge head is that: under this method, the cleaning liquid can be stirred in the mixing chamber base to fully clean the mixing material chamber, and can be further pressurized from the mixing chamber base of the present head to make it fully thrown out, reducing residues and realizing self-cleaning. It can be realized without stopping the machine or disassembling, ensuring the processing efficiency.

[0019] In some embodiments, the rotation speed of the stirring block is rapidly increased to 18,000 rpm to 22,000 rpm. Under normal working conditions, the rotation speed of the stirring block should be 3,000 rpm to 5,000 rpm. By rapidly increasing the rotation speed of the stirring block to the above parameters, it can be ensured that the material can be thrown out from the mixing chamber base.

[0020] In some embodiments, the step includes moving down the mixing chamber base so that the mixing chamber base extends into the mixing cup. When the mixing chamber base extends into the mixing cup, the cleaning liquid thrown out by the present head can be carried by the mixing cup, avoiding splashing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of a self-cleaning discharge head according to an embodiment of the present invention.

[0022] Figure 2 It is a left view of the structural schematic diagram of a self - cleanable discharge head of an embodiment of the present invention.

[0023] Figure 3 It is a cross - sectional view of the left view of the structural schematic diagram of a self - cleanable discharge head of an embodiment of the present invention.

[0024] Figure 4 It is a cross - sectional view of the structural schematic diagram at the feeding mechanism of a self - cleanable discharge head of an embodiment of the present invention.

[0025] Figure 5 It is a structural schematic diagram of the stirring block of a self - cleanable discharge head of an embodiment of the present invention.

[0026] In the figure: 1. Power device, 2. Stirring block, 3. Lifting mechanism, 4. Mixing cavity base, 5. Feeding mechanism, 6. Frame, 21. Inclined section, 22. Thread - like protrusion, 23. Groove, 31. Guide rail, 32. Slide block, 33. Machine base, 40. Mixed material cavity, 41. Seat body, 42. Nozzle, 43. Inner sleeve, 44. Sealing ring, 401. Inclined part, 402. Channel, 51. Piston, 52. Piston rod, 53. Valve block, 531. Feeding channel. Specific embodiments

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] Example 1

[0029] Reference Figures 1 to 5 , a self - cleanable discharge head of this embodiment includes a power device 1, a stirring block 2, a lifting mechanism 3, a mixing cavity base 4, several feeding mechanisms 5 and a frame 6.

[0030] The power device 1 is preferably a high - speed motor, whose speed can reach more than 18000 r / min. The output shaft of the power device 1 is connected to the stirring block 2 through a coupling, so that the power device 1 can drive the stirring block 2 to rotate.

[0031] The lifting mechanism 3 includes guide rails 31, sliders 32 and a base 33. Preferably, there are two guide rails 31, and both of the two guide rails 31 are fixedly installed on the frame 6 by bolts. Preferably, there are also two sliders 32, and the two sliders 32 are slidably sleeved on the two guide rails 31 respectively. The base 33 is fixedly connected to the two sliders 32 by bolts, so that the base 33 can slide along the guide rails 31 with the sliders 32. The base 33 is fixedly sleeved on the body of the power device 1, so that the power device 1 can also move with the movement of the base 33. In addition, the slider 32 can be a pneumatic slider, and it can move the slider 32 by connecting to an air source.

[0032] The mixing chamber base 4 includes a base body 41, a nozzle 42 and an inner sleeve 43. The base body 41 is fixedly installed on the frame 6 by bolts. The inner sleeve 43 is fixedly embedded in the base body 41 by bolts. The nozzle 42 is fixedly connected to the bottom of the base body 41 by bolts. A mixing material chamber 40 is provided in the mixing chamber base 4. The mixing material chamber 40 passes through the inner sleeve 43 and the nozzle 42, and an inclined part 401 is formed in the nozzle 42. The cross-sectional area of the mixing material chamber 40 is smaller at the inclined part 401 the closer it is to the bottom.

[0033] The mixing chamber base 4 further includes a sealing ring 44. One end of the inner sleeve extends out of the base body and is sleeved with a sealing ring, and the sealing ring is embedded in the nozzle.

[0034] The stirring block 2 can extend into the mixing material chamber 40, and the stirring block 2 is provided with an inclined section 21, and the shape of the inclined section 21 matches the shape of the inclined part 401, and the inclined section 21 can be arranged in the inclined part 401.

[0035] Thread-like protrusions 22 are provided on the side of the stirring block 2. At the same time, the stirring block 2 is provided with grooves 23 on the thread-like protrusions 22. There can be multiple grooves 23. The arrangement of the grooves 23 can form a certain cutting surface on the thread-like protrusions 22, so as to improve the stirring effect of the stirring block 2.

[0036] A plurality of feeding mechanisms 5 are all connected to the mixing chamber base 4, and each feeding mechanism 5 is respectively communicated with the mixing material chamber 40. Preferably, the feeding mechanism 5 includes a piston 51, a piston rod 52 and a valve block 53. A feeding channel 531 is provided in the feeding mechanism 5. The piston 51 is fixedly sleeved on one end of the piston rod 52, and the piston 51 is slidably arranged in the valve block 53. The mixing chamber base 4 is provided with a channel 402 communicated with the mixing material chamber 40, and the channel 402 is also communicated with the feeding channel 531. The other end of the piston rod 52 passes through the feeding channel 531 and extends into the channel 402. The piston rod 52 can close the communication between the channel 402 and the mixing material chamber 40 when needed.

[0037] When this self-cleaning discharge head is used for sole production, various materials for sole production can be transported to the mixing cavity 40 through each feeding mechanism 5. Specifically, an external feeding device can be connected to the feeding mechanism 5 through pipelines respectively to transport the materials into the feeding channel 531 and flow to the channel 402. The valve block 53 can be connected to an external air source, and according to the materials to be used, the external air source is driven to move the piston 51, so that the piston rod 52 flowing into the feeding mechanism 5 with the required materials does not block the connection between the channel 402 and the mixing cavity 40, and the required materials can enter the mixing cavity 40. In addition, one of the feeding mechanisms 5 can be selected to be connected to an external cleaning liquid feeding device, so that this feeding mechanism 5 can be used to transport the cleaning liquid into the mixing cavity 40.

[0038] The power device 1 can drive the connected stirring block 2 to rotate, and the slider 32 of the lifting mechanism 3 can be connected to an external air source. The external air source can make the slider 32 slide through air supply, so that the slider 32 can slide along the guide rail 31. Then the machine base 33 connected to the slider 32 also moves accordingly, and the power device 1 arranged on the machine base 33 also moves accordingly, and the stirring block 2 connected to the power device 1 also moves accordingly.

[0039] Thus, the stirring block 2 moves up and down in the mixing cavity 40. At the same time, the stirring block 2 can stir and pressurize the materials in the mixing cavity 40, and the materials can be effectively pressed out of the mixing cavity 40 to enter the sole production mold. In this way, relying on the double pressurization of the lifting mechanism 3 and the spiral protrusion 22, the materials can be extruded as much as possible, so as to reduce the residual materials.

[0040] Embodiment 2

[0041] Reference Figures 1 to 5 , a self-cleaning method of a self-cleaning discharge head in this embodiment includes the following steps:

[0042] After the injection molding process of the self-cleaning discharge head in Embodiment 1 is completed, the feeding mechanism 5 connected to the external cleaning liquid feeding device can transport the cleaning liquid into the mixing cavity 40. Then, the output of the power device 1 is increased, and the rotation speed of the stirring block 2 connected to the power device 1 is increased. Preferably, the rotation speed of the stirring block 2 can be increased to 18000 r / min - 22000 r / min.

[0043] The slider 32 of the lifting mechanism 3 can be connected to an external air source. The external air source can make the slider 32 slide through air supply, so that the slider 32 can slide along the guide rail 31. Then the machine base 33 connected to the slider 32 also moves accordingly, and the power device 1 arranged on the machine base 33 also moves accordingly, and the stirring block 2 connected to the power device 1 also moves accordingly.

[0044] Thus, through the above-mentioned method, by driving the lifting mechanism 3 to move, the power device 1 is made to reciprocate up and down, that is, the stirring block 2 can move up and down in the mixing chamber 40.

[0045] In the above manner, the cleaning liquid in the mixing chamber 40 can be effectively stirred, and can be pressed out and thrown out after stirring to avoid it from continuing to remain in the mixing chamber 40 as much as possible, thereby realizing self-cleaning of the self-cleaning discharging head without disassembling or stopping the machine.

[0046] The above steps may also include relying on an external driving device to move the entire self-cleaning discharge head downward, so that the mixing chamber base 4 moves downward, and the nozzle 42 of the mixing chamber base 4 extends into the mixing cup, so that the cleaning liquid thrown out by the machine head can be carried by the mixing cup to avoid splashing.

[0047] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. Self-cleaning discharge head, characterized in that, It includes a power device, a stirring block, a lifting mechanism, a mixing chamber base, several feeding mechanisms and a frame. The power device is connected to the stirring block, the power device is connected to the lifting mechanism, the lifting mechanism and the mixing chamber base are both installed on the frame. The mixing chamber base is provided with a mixing material chamber, the stirring block extends into the mixing material chamber, and several of the feeding mechanisms are connected to the mixing chamber base and are respectively communicated with the mixing material chamber.

2. The self-cleaning discharge head according to claim 1, wherein, The lifting mechanism includes a guide rail, a slider and a base. The guide rail is fixedly installed on the frame, the slider is slidably sleeved on the guide rail, the base is connected to the slider, and the base is sleeved on the power device.

3. The self-cleaning discharge head according to claim 1, characterized in that, The mixing chamber base includes a seat body, a nozzle and an inner sleeve. The inner sleeve is embedded in the seat body, the nozzle is connected to the seat body, the mixing material chamber passes through the inner sleeve and the nozzle, and an inclined part is formed in the nozzle.

4. The self-cleaning discharge head according to claim 3, wherein, The stirring block is provided with an inclined section, and the inclined section can be arranged in the inclined part.

5. The self-cleaning discharge head according to claim 3, characterized in that, The mixing chamber base includes a sealing ring. One end of the inner sleeve extends out of the seat body and is sleeved with a sealing ring, and the sealing ring is embedded in the nozzle.

6. The self-cleaning discharge head according to claim 1, wherein, The side part of the stirring block is provided with thread-like protrusions.

7. The self-cleaning discharge head according to claim 6, characterized in that, The stirring block is provided with grooves on the thread-like protrusions.

8. The self-cleaning discharge head according to claim 1, wherein, The feeding mechanism includes a piston, a piston rod and a valve block. A feeding channel is arranged in the feeding mechanism. The piston is sleeved on the piston rod and is slidably arranged in the valve block. The mixing chamber base is provided with a channel, the channel is communicated with the feeding channel, the piston rod passes through the feeding channel and extends into the channel, the channel is communicated with the mixing material chamber, and the piston rod can block the communication between the channel and the mixing material chamber.

9. Self-cleaning method for a self-cleaning discharge head, characterized in that, It includes the following steps: Inject cleaning liquid into the mixing material chamber. Increase the output of the power device so that the rotation speed of the stirring block increases rapidly. Through the lifting mechanism, the power device moves up and down reciprocally, so that the stirring block can move up and down in the mixing material chamber.

10. The self-cleaning method of the self-cleaning discharge head according to claim 9, characterized in that, The rotation speed of the stirring block increases rapidly to 18000 rpm to 22000 rpm.

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