Double-color mold

Abstract

The invention relates to the field of molds, in particular to a double-color mold which comprises a base, at least two cooling assemblies, at least two fixed molds and at least two movable molds, the movable molds and the fixed molds are in one-to-one correspondence and are slidably connected to the surfaces of the fixed molds, and each cooling assembly comprises a power rod, a cooling piston, a first one-way valve and a second one-way valve. The end of the power rod is connected to the surface, facing the fixed mold, of the movable mold, a ventilation cavity for the cooling piston to slide is formed in the inner wall of the power cavity, a first air inlet channel is formed in the surface of the fixed mold, a first one-way valve is connected to the inner wall of the first air inlet channel, a first air outlet channel is formed in the surface of the fixed mold, and a second one-way valve is connected to the inner wall of the first air outlet channel. Through the arrangement of the power rod, the cooling piston, the first one-way valve and the second one-way valve, cooling of the fixed mold is further improved, the first ventilation channel is located between the ventilation cavity and the mold cavity, so that the mold cavity is located on the inner wall of the fixed mold and is not prone to temperature rise, the cooling period for cooling sizing materials in the mold cavity to form a product is shortened, and therefore the machining cost of the product is reduced.

Description

Technical Field

[0001] This application relates to the field of molds, and in particular to a two-color mold. Background Art

[0002] A two-color mold is a mold that injects two different colors or materials of plastic into two sets of molds successively through a special two-color injection molding machine, and the final product is demolded only once.

[0003] The two-color molds in the prior art include an upper mold and a lower mold. When the upper mold and the lower mold are closed, a cavity for injection molding is formed. The rubber material will transfer part of the heat energy to the lower mold and the upper mold in the cavity. After the two-color mold runs for a long time, the upper mold and the lower mold heat up, extending the cooling cycle of the rubber material in the cavity to form the product, thereby increasing the processing cost of the product. Summary of the Invention

[0004] In order to improve the problem of the cooling cycle of the rubber material in the cavity to form the product, this application provides a two-color mold.

[0005] A two-color mold provided by this application adopts the following technical solutions: A two-color mold includes a base, at least two cooling components, at least two fixed molds, and at least two moving molds. At least two of the fixed molds are connected to the surface of the base at intervals. The moving molds correspond to the fixed molds one by one and are slidably connected to the surface of the fixed molds. When the moving molds and the fixed molds are closed, a cavity for injection molding is formed. The cooling components correspond to the fixed molds one by one and are connected. The cooling component includes a power rod, a cooling piston, a one-way valve one, and a one-way valve two. The end of the power rod is connected to the surface of the moving mold facing the fixed mold. A power cavity for the power rod to slide is opened on the surface of the fixed mold facing the moving mold. The sliding direction of the power rod and the sliding direction of the moving mold are parallel to each other. The cooling piston is connected to the end face of the power rod away from the moving mold. An air ventilation cavity for the cooling piston to slide is opened on the inner wall of the power cavity. The outer peripheral surface of the cooling piston abuts against the inner wall of the air ventilation cavity to form a seal. An air inlet channel one is opened on the surface of the fixed mold. The air inlet channel one communicates with the air ventilation cavity. The one-way valve one is connected to the inner wall of the air inlet channel one. The one-way valve one allows external air to enter the air inlet channel one. An air outlet channel one is opened on the surface of the fixed mold. The air outlet channel one communicates with the air ventilation cavity. The air outlet channel one is located between the cavity and the air ventilation cavity. The one-way valve two is connected to the inner wall of the air outlet channel one. The one-way valve two allows the air in the air ventilation cavity to be discharged from the air outlet channel one.

[0006] By adopting the above technical solution, when the product is injection-molded, the moving mold approaches the fixed mold and closes the mold, driving the power rod to slide along the inner wall of the power cavity towards the fixed mold. The power rod pushes the cooling piston to slide along the inner wall of the ventilation cavity towards the fixed mold. The volume in the ventilation cavity becomes larger, and the air pressure in the ventilation cavity decreases. External air enters the ventilation cavity through the first one-way valve and the first air inlet channel. The air comes into full contact with the inside of the ventilation cavity and undergoes heat exchange, achieving the preliminary cooling of the fixed mold. When the rubber material in the cavity cools to form a product, the moving mold moves away from the fixed mold for demolding, driving the power rod to slide along the inner wall of the power cavity away from the fixed mold. The power rod pushes the cooling piston to slide along the inner wall of the ventilation cavity away from the fixed mold. The volume in the ventilation cavity becomes smaller, and the air pressure in the ventilation cavity increases. The air in the ventilation cavity is discharged through the second one-way valve and the first air outlet channel. The air comes into full contact with the inner wall of the first air outlet channel and undergoes heat exchange, further improving the cooling of the fixed mold. Moreover, the first air outlet channel is located between the ventilation cavity and the cavity, making it difficult for the inner wall of the fixed mold where the cavity is located to heat up, shortening the cooling cycle for the rubber material in the cavity to cool and form a product, thereby reducing the processing cost of the product.

[0007] Optionally, the cooling assembly further includes a third one-way valve and a fourth one-way valve. The cooling piston divides the ventilation cavity into a first cooling section and a second cooling section. The first cooling section communicates with the first air inlet channel and the first air outlet channel. An air inlet channel 2 is formed on the surface of the fixed mold, and the air inlet channel 2 communicates with the second cooling section. The third one-way valve is connected to the inner wall of the air inlet channel 2, and the third one-way valve allows external air to enter the air inlet channel 2. An air outlet channel 2 is formed on the inner wall of the second cooling section, and the air outlet channel 2 communicates with the first air outlet channel. The fourth one-way valve is connected to the inner wall of the air outlet channel 2, and the fourth one-way valve allows the air in the second cooling section to enter the air outlet channel 2.

[0008] By adopting the above technical solution, when the moving mold approaches the fixed mold for clamping, it drives the power rod to slide along the inner wall of the power cavity towards the fixed mold, pushing the cooling piston towards the second cooling section. The volume in the first cooling section increases, the air pressure in the first cooling section decreases, and the outside air enters the first cooling section through the first one-way valve and the first air inlet channel. The air fully contacts the inner wall of the first cooling section and conducts heat exchange, achieving the preliminary cooling of the fixed mold. At the same time, the volume in the second cooling section decreases, the air pressure in the second cooling section increases, and the air in the second cooling section sequentially passes through the fourth one-way valve and the second air outlet channel and is discharged from the first air outlet channel, increasing the flow area of the air in the fixed mold, enabling the fixed mold to fully contact the air and conduct heat exchange, thereby improving the cooling efficiency of the fixed mold; when the moving mold moves away from the fixed mold for demolding, it drives the power rod to slide along the inner wall of the power cavity away from the fixed mold, pushing the cooling piston away from the second cooling section. The volume in the first cooling section shrinks, the air pressure in the first cooling section increases, and the air in the first cooling section is discharged through the second one-way valve and the first air outlet channel. At the same time, the volume in the second cooling section becomes larger, the air pressure in the second cooling section decreases, and the outside air enters the first cooling section through the third one-way valve and the second air inlet channel, promoting the air flow in the ventilation cavity, improving the cooling efficiency of the fixed mold, and thus improving the efficiency of the rubber material in the cavity to be cooled to form a product.

[0009] Optionally, the fixed mold is connected with a cleaning assembly, and the cleaning assembly includes at least two first filters. One of the first filters is connected to the inner wall of the first air inlet channel, and the other first filter is connected to the inner wall of the second air inlet channel. The first filter can filter impurities in the air.

[0010] By adopting the above technical solution, one of the first filters is connected to the inner wall of the first air inlet channel, and the other first filter is connected to the inner wall of the second air inlet channel. The first filter can filter impurities in the air, making it difficult for external impurities to enter the ventilation cavity through the first air inlet channel and the second air inlet channel, ensuring the cleanliness of the ventilation cavity, and thus guaranteeing the stability of the cooling piston sliding in the ventilation cavity.

[0011] Optionally, the cleaning assembly further includes a positioning rod and at least two scraping plates. The end of the positioning rod is connected to the surface of the moving mold, and at least two scraping plates are spaced and connected to the surface of the positioning rod facing the fixed mold. The scraping plates correspond to the first filters one by one, and the scraping ends of the scraping plates abut against the surface of the first filter and scrape the impurities on the surface of the first filter.

[0012] By adopting the above technical solution, when the moving mold approaches or moves away from the fixed mold, it drives the positioning rod to move away from or close to the fixed mold. The scraping plates correspond to the first filters one by one, and the scraping ends of the scraping plates abut against the surface of the first filter and scrape the impurities on the surface of the first filter, realizing the directional cleaning of the impurities on the surface of the first filter, and thus guaranteeing the stability of the first filter filtering impurities in the air.

[0013] Optionally, the cleaning assembly further comprises a slider, an end of which is connected to the surface of the positioning rod facing the fixed mold, and the surface of the fixed mold is provided with a slideway for the slider to slide, and when the positioning rod slides, the slider is driven to slide on the inner wall of the slideway.

[0014] By adopting the above technical solution, when the movable mold drives the positioning rod to approach or move away from the fixed mold, it drives the slider to slide on the inner wall of the slide, and the outer wall of the slider abuts against the inner wall of the slide to form a limit, so that the positioning rod is not easily offset when sliding, thereby improving the stability of the sliding of the positioning rod.

[0015] Optionally, the cleaning component also includes at least two filter screens 2 and multiple elastic blocks, one of the filter screens 2 is slidably connected to the inner wall of the air inlet channel 1, and the filter screen 2 is located between the filter screen 1 and the one-way valve 1, and the other filter screen 2 is slidably connected to the inner wall of the air inlet channel 2, and the filter screen 2 is located between the filter screen 2 and the one-way valve 3. The multiple elastic blocks are divided into two groups, each group of elastic blocks corresponds one-to-one to the filter screen 2, and the multiple elastic blocks in the same group are connected at intervals to the end face of the filter screen 2 facing the filter screen 1, the elastic blocks correspond one-to-one to the filter holes on the filter screen 1 and are embedded, and the outer peripheral surface of the elastic block presses against the inner wall of the filter hole on the filter screen 1 to scrape off impurities.

[0016] By adopting the above technical solution, when it is necessary to clean the impurities adhered to the inner wall of the filter hole on the filter screen one, the filter screen two is driven close to the filter screen one, the elastic block corresponds to the filter holes on the filter screen one and is embedded, the outer peripheral surface of the elastic block presses against the inner wall of the filter hole on the filter screen one and scrapes off the impurities on the inner wall of the filter hole, thereby improving the cleaning efficiency of the filter screen one, thereby ensuring the stability of the filter screen one in filtering impurities.

[0017] Optionally, the cleaning assembly further comprises at least two elastic members 1, at least two electromagnets and at least two magnetic blocks, the elastic member 1 corresponding one to the filter screen 1, one end of the elastic member 1 in the elastic force direction is connected to the end face of the filter screen 1, the other end of the elastic member 1 in the elastic force direction is connected to the end face of the filter screen 2, the elastic member 1 has an elastic force to drive the filter screen 2 to slide in the direction away from the filter screen 1, and the elastic block has a tendency to detach from the filter holes on the filter screen 1, the electromagnet corresponding one to the filter screen 1, the electromagnet is connected to the end face of the filter screen 1 facing the filter screen 2, the magnetic block corresponding one to the filter screen 1, the magnetic block is connected to the end face of the filter screen 2 facing the filter screen 1, the magnetic force of the electromagnet is greater than the elastic force of the elastic member 1, when the electromagnet is energized and has magnetic force, the electromagnet and the magnetic block attract each other with opposite poles, push the filter screen 2 close to the filter screen 1, and the elastic block is embedded in the filter holes on the filter screen 1.

[0018] By adopting the above technical solution, when it is necessary to clean the filter holes on the first filter net, the electromagnet is controlled to be energized to have magnetic force, and the magnetic force of the electromagnet is greater than the elastic force of the first elastic member. The electromagnet and the magnetic block attract each other with opposite polarities, pushing the second filter net closer to the first filter net. The elastic blocks correspond to the filter holes on the first filter net one by one and are embedded. The outer peripheral surface of the elastic block abuts against the inner wall of the filter hole on the first filter net and scrapes the impurities on the inner wall of the filter hole. When the cleaning of the filter holes on the first filter net is completed, the electromagnet is controlled to be de-energized to lose magnetic force, and the elastic force of the first elastic member drives the second filter net to slide away from the first filter net, and the elastic block disengages from the filter holes on the first filter net, realizing the automatic reset of the second filter net.

[0019] Optionally, the cleaning assembly further includes a first contact switch and a second contact switch. The first contact switch is connected to the inner wall of the slideway close to the moving die, and the first contact switch is electrically connected to the electromagnet located in the first air inlet channel. The second contact switch is connected to the inner wall of the slideway far from the moving die, and the second contact switch is electrically connected to the electromagnet located in the second air inlet channel. When the moving die and the fixed die are clamped, the second contact switch abuts against the slider and conducts, and the electromagnet located in the second air inlet channel is energized to have magnetic force. When the moving die is separated from the fixed die for demolding, the first contact switch abuts against the slider and conducts, and the electromagnet located in the first air inlet channel is energized to have magnetic force.

[0020] By adopting the above technical solution, when the fixed die and the moving die are clamped, the positioning rod drives the slider to slide along the inner wall of the slideway towards the direction close to the second contact switch. The second contact switch abuts against the slider and conducts, and the electromagnet located in the second air inlet channel is energized to have magnetic force. When the fixed die is separated from the moving die for demolding, the positioning rod drives the slider to slide along the inner wall of the slide towards the direction close to the first contact switch. The first contact switch abuts against the slider and conducts, and the electromagnet located in the first air inlet channel is energized to have magnetic force, realizing the directional start of the electromagnets in the first air inlet channel and the second air inlet channel, without manual control by the staff, thus improving the simplicity of using the two-color mold.

[0021] Optionally, the moving die is connected with an installation assembly. The installation assembly includes an embedding block and an installation plate. The end of the embedding block is connected to the end face of the positioning rod facing the moving die. An installation cavity for the installation plate to slide is formed on the surface of the moving die. The sliding direction of the installation plate is parallel to the sliding direction of the moving die. An embedding groove for the embedding block to be embedded is formed on the inner wall of the installation cavity. When the embedding block is embedded into the embedding groove, the installation plate slides along the inner wall of the installation cavity towards the direction close to the embedding block, and the plate surface of the installation plate and the inner wall of the embedding groove clamp both sides of the embedding block to form a fixation.

[0022] By adopting the above technical solution, when the positioning rod is installed, the insertion block is inserted into the insertion groove, and the end face of the insertion block is flush with the bottom wall of the installation cavity. Then, the installation plate is driven to slide along the inner wall of the installation cavity towards the direction close to the insertion groove. The clamping of the two sides of the insertion block by the plate surface of the installation plate and the inner wall of the insertion groove forms a fixation, realizing the detachable connection between the positioning rod and the moving mold, thus facilitating the replacement of the positioning rod.

[0023] Optionally, the installation assembly further includes an elastic member II. One end of the elastic member II in the direction of its elastic force is connected to the inner wall of the installation cavity, and the other end in the direction of its elastic force is connected to the plate surface of the installation plate. The elastic member II has an elastic force to drive the installation plate to slide towards the direction close to the insertion groove, and there is a tendency for the plate surface of the installation plate and the inner wall of the insertion groove to clamp the two sides of the insertion block to form a fixation.

[0024] By adopting the above technical solution, the elastic force of the elastic member II drives the installation plate to slide along the inner wall of the installation cavity towards the direction close to the insertion groove, and the clamping of the two sides of the insertion block by the plate surface of the installation plate and the bottom wall of the insertion groove forms a fixation, making the installation plate not easily deviate in the installation cavity, thereby improving the connection stability between the positioning rod and the moving mold.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The settings of the power rod, the cooling piston, the check valve I, and the check valve II further improve the cooling of the fixed mold. Moreover, the air ventilation channel I is located between the ventilation cavity and the cavity, making it difficult for the inner wall of the cavity located in the fixed mold to heat up, shortening the cooling cycle for the rubber material in the cavity to cool and form a product, thereby reducing the processing cost of the product; 2. The settings of the check valve III and the check valve IV promote the air flow in the ventilation cavity, improving the cooling efficiency of the fixed mold, and thus improving the efficiency of the rubber material in the cavity to cool and form a product; 3. The setting of the filter screen I makes it difficult for external impurities to enter the ventilation cavity through the air inlet channel I and the air inlet channel II, ensuring the cleanliness of the ventilation cavity, and thus guaranteeing the stability of the sliding of the cooling piston in the ventilation cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the overall structural schematic diagram in the embodiment of the present application.

[0027] Figure 2 is the partial sectional view in the embodiment of the present application, mainly showing the guide post.

[0028] Figure 3 is the sectional view in the embodiment of the present application, mainly showing the cavity.

[0029] Figure 4 is the partial sectional view in the embodiment of the present application, mainly showing the cooling assembly.

[0030] Figure 5It is a schematic diagram of the overall structure of Filter Mesh 1 and Filter Mesh 2 in the embodiments of the present application.

[0031] Explanation of the reference numerals: 1, base; 2, cooling assembly; 21, power rod; 22, cooling piston; 23, check valve 1; 24, check valve 2; 25, check valve 3; 26, check valve 4; 3, fixed mold; 31, power chamber; 32, ventilation chamber; 321, cooling section 1; 322, cooling section 2; 33, air inlet passage 1; 34, air outlet passage 1; 35, air inlet passage 2; 36, air outlet passage 2; 37, slideway; 4, moving mold; 41, guiding cavity; 42, cavity; 43, injection port; 44, power groove; 45, installation cavity; 46, embedding groove; 5, guiding column; 6, cleaning assembly; 61, positioning rod; 62, slider; 63, contact switch 1; 64, contact switch 2; 65, scraper; 66, Filter Mesh 1; 67, elastic member 1; 68, Filter Mesh 2; 681, limiting hole; 69, electromagnet; 610, magnetic block; 611, elastic block; 7, limiting rod; 8, installation assembly; 81, embedding block; 82, mounting plate; 83, elastic member 2. Detailed implementation manners

[0032] The following will further elaborate on the present application in conjunction with the attached Figures 1-5 drawings for a more detailed description.

[0033] The embodiments of the present application disclose a two-color mold. Referring to Figure 1 and Figure 2 , the two-color mold includes a base 1, two cooling assemblies 2, two fixed molds 3 and two moving molds 4. The bottoms of the two fixed molds 3 are spaced and connected to both sides of the base 1 in the length direction. The moving molds 4 correspond to the fixed molds 3 one by one. Four corners of the top surface of the fixed mold 3 are fixedly provided with guiding columns 5 through bolts. The axis of the guiding column 5 is parallel to the height direction of the fixed mold 3. Four corners of the bottom of the moving mold 4 are respectively provided with guiding cavities 41 for the guiding columns 5 to slide. The moving mold 4 approaches or moves away from the fixed mold 3 along the axis of the guiding column 5.

[0034] Referring to Figure 2 and Figure 3 , when the moving mold 4 and the fixed mold 3 are closed, a cavity 42 for injection molding is formed. An injection port 43 is opened on the top surface of the moving mold 4. The injection port 43 communicates with the cavity 42. The rubber material is injected into the cavity 42 through the injection port 43. The rubber material in the cavity 42 is cooled to form a product. The cooling assemblies 2 correspond to the fixed molds 3 one by one and are connected. The cooling assemblies 2 can cool the fixed molds 3, so that the fixed molds 3 are not easily heated when the two-color mold operates for a long time, shortening the molding cycle of the rubber material in the cavity 42, thereby reducing the production cost of the product.

[0035] Referring to Figure 2 and Figure 4, the cooling assembly 2 includes a power rod 21, a cooling piston 22, a one-way valve 23, a one-way valve 24, a one-way valve 25 and a one-way valve 26. A power groove 44 for the end of the power rod 21 to be embedded is formed on the inner wall of the guiding cavity 41. The outer wall of the power rod 21 abuts against the inner wall of the power groove 44 to form a fixation, realizing the fixation of the power rod 21 and the moving mold 4. A power cavity 31 for the power rod 21 to slide is formed on the surface of the fixed mold 3 facing the power rod 21. The sliding direction of the power rod 21 and the sliding direction of the moving mold 4 are parallel to each other. The outer peripheral surface of the power rod 21 abuts tightly against the inner wall of the power cavity 31 to form a seal. The material of the cooling piston 22 can be rubber or silica gel. In the embodiment of the present application, the material of the cooling piston 22 is rubber, which has a certain deformation ability. The cooling piston 22 is fixed to the end face of the power rod 21 away from the moving mold 4. A ventilation cavity 32 for the cooling piston 22 to slide is formed on the inner wall of the power cavity 31. The outer peripheral surface of the cooling piston 22 abuts tightly against the inner wall of the ventilation cavity 32 to form a seal. The cooling piston 22 divides the ventilation cavity 32 into a first cooling section 321 and a second cooling section 322. An air inlet channel 33 is formed on the surface of the fixed mold 3. The air inlet channel 33 communicates with the first cooling section 321. The one-way valve 23 is connected to the inner wall of the air inlet channel 33. The one-way valve 23 allows the air in the air inlet channel to enter the first cooling section 321. An air outlet channel 34 is formed on the surface of the fixed mold 3. The air outlet channel 34 communicates with the first cooling section 321. The one-way valve 24 is connected to the inner wall of the air outlet channel 34. The one-way valve 24 allows the air in the first cooling section 321 to be discharged from the air outlet channel 34, and the air outlet channel 34 is located between the cavity 42 and the first cooling section 321.

[0036] Refer to Figure 2 and Figure 4 , an air inlet channel 35 is formed on the surface of the fixed mold 3. The air inlet channel 35 communicates with the second cooling section 322. The one-way valve 25 is connected to the inner wall of the air inlet channel 35. The one-way valve 25 allows the air in the air inlet channel 35 to enter the second cooling section 322. An air outlet channel 36 is formed on the inner wall of the second cooling section 322. The air outlet channel 36 communicates with the air outlet channel 34. The one-way valve 26 is connected to the inner wall of the air outlet channel 36. The one-way valve 26 allows the air in the second cooling section 322 to enter the air outlet channel 36.

[0037] Refer to Figure 2 and Figure 4When the moving mold 4 and the fixed mold 3 are clamped, the moving mold 4 drives the power rod 21 to slide along the inner wall of the power cavity 31 towards the fixed mold 3, pushing the cooling piston 22 closer to the second cooling section 322. The volume in the first cooling section 321 increases, and the air pressure in the first cooling section 321 decreases. External air enters the first cooling section 321 through the first one-way valve 23 and the first air inlet channel 33. The air comes into full contact with the inner wall of the first cooling section 321 and undergoes heat exchange, achieving the preliminary cooling of the fixed mold 3. At the same time, the volume in the second cooling section 322 decreases, and the air pressure in the second cooling section 322 increases. The air in the second cooling section 322 sequentially passes through the fourth one-way valve 26 and the second air outlet channel 36 and is discharged from the first air outlet channel 34, increasing the flow area of the air in the fixed mold 3, enabling the fixed mold 3 to come into full contact with the air and undergo heat exchange, thereby improving the cooling efficiency of the fixed mold 3. When the moving mold 4 moves away from the fixed mold 3 for demolding, it drives the power rod 21 to slide along the inner wall of the power cavity 31 away from the fixed mold 3, pushing the cooling piston 22 away from the second cooling section 322. The volume in the first cooling section 321 shrinks, and the air pressure in the first cooling section 321 increases. The air in the first cooling section 321 is discharged through the second one-way valve 24 and the first air outlet channel 34. At the same time, the volume in the second cooling section 322 becomes larger, and the air pressure in the second cooling section 322 decreases. External air enters the first cooling section 321 through the third one-way valve 25 and the second air inlet channel 35, promoting the air flow in the ventilation cavity 32, improving the cooling efficiency of the fixed mold 3, and thus improving the efficiency of the rubber material in the cavity 42 to be cooled to form a product.

[0038] Refer to Figure 2 and Figure 4 The fixed mold 3 is equipped with a cleaning component 6, and the cleaning component 6 can filter the air in the first air inlet channel 33 and the second air inlet channel 35. The cleaning component 6 includes a positioning rod 61, a slider 62, a first contact switch 63, a second contact switch 64, two scraping plates 65, two first filter nets 66, two second filter nets 68, two first elastic members 67, two electromagnets 69, two magnetic blocks 610, and a plurality of elastic blocks 611. One of the first filter nets 66 is connected to the inner wall of the first air inlet channel 33, and the other second filter net 68 is connected to the inner wall of the second air inlet channel 35. The first filter net 66 can filter impurities in the air, and the end face of the first filter net 66 is flush with the surface of the fixed mold 3.

[0039] Refer to Figure 2 and Figure 4 One of the second filter nets 68 is slidably connected to the inner wall of the first air inlet flow channel, and the other second filter net 68 is slidably connected to the inner wall of the second air inlet flow channel. The sliding direction of the second filter net 68 is parallel to the length direction of the base 1. The second filter net 68 is located on the side of the first filter net 66 close to the ventilation cavity 32. External air needs to be filtered by the first filter net 66 and the second filter net 68 in sequence, so that external impurities are not easily accumulated in the ventilation cavity 32, thereby ensuring the stability of the cooling piston 22 sliding on the inner wall of the ventilation cavity 32.

[0040] Reference Figure 4 and Figure 5 , two limit rods 7 are fixed at intervals on the end surface of the filter screen 1 66 facing the filter screen 2 68, and two limit holes 681 for the limit rods 7 to slide are arranged at intervals on the end surface of the filter screen 2 68. The filter screen 2 68 slides along the axis of the limit rod 7, so that the filter screen 2 68 is not easy to deviate, thereby improving the stability of the sliding of the filter screen 2 68; the material of the elastic block 611 can be rubber or silicone. In the embodiment of the present application, the material of the elastic block 611 is rubber, which has a certain deformation ability. The multiple elastic blocks 611 are divided into two groups, and each group of elastic blocks 611 corresponds to the filter screen 2 68 one by one. The multiple elastic blocks 611 of the same group are connected to the surface of the filter screen 2 68 facing the filter screen 1 66 at intervals. The elastic blocks 611 correspond to the filter holes on the filter screen 1 66 one by one. The elastic blocks 611 can be embedded in the filter holes on the filter screen 1 66, and the outer peripheral surface of the elastic block 611 is pressed against the inner wall of the filter hole on the filter screen 1 66 and scrapes off the impurities on the inner wall of the filter hole, so as to clean the impurities in the filter hole on the filter screen 1 66.

[0041] Reference Figure 4 and Figure 5 The elastic member 67 can be a compression spring or a tension spring. In the embodiment of the present application, the elastic member 67 is a compression spring with a certain deformation ability. One end of the elastic member 67 in the elastic direction is connected to the end face of the filter screen 1 66, and the other end of the elastic member 67 in the elastic direction is connected to the end face of the filter screen 2 68. The elastic member 67 has the elastic force to drive the filter screen 2 68 to slide in the direction away from the filter screen 1 66, and the elastic block 611 tends to separate from the filter holes on the filter screen 1 66.

[0042] Reference Figure 2 and Figure 4 The magnetic force of electromagnet 69 is greater than the elastic force of elastic member 67. Electromagnet 69 corresponds to filter screen 1 66 one by one. Electromagnet 69 is connected to the surface of filter screen 1 66 facing filter screen 2 68. Magnetic block 610 is connected to the end surface of filter screen 2 68 facing filter screen 1 66. When electromagnet 69 is energized and has magnetic force, electromagnet 69 and magnetic block 610 attract each other with opposite poles, pushing filter screen 2 68 close to filter screen 1 66. Elastic block 611 is embedded in the filter holes on filter screen 1 66 to realize directional sliding of filter screen 2 68.

[0043] Reference Figure 2 and Figure 4, the end of the positioning rod 61 is connected to the surface of the moving mold 4 close to the fixed mold 3. Two scraping plates 65 are fixedly spaced on the surface of the positioning rod 61 facing the fixed mold 3. The scraping plates 65 correspond to the first filter screen 66 one by one, and the scraping section of the scraping plate 65 abuts against the surface of the first filter screen 66 and scrapes the impurities on the surface of the first filter screen 66, realizing the directional cleaning of the surface of the first filter screen 66; the end of the slider 62 is connected to the surface of the positioning rod 61 facing the fixed mold 3. A slideway 37 for the slider 62 to slide is provided on the surface of the fixed mold 3. When the moving mold 4 approaches or separates from the fixed mold 3, the positioning rod 61 is driven to approach or separate from the fixed mold 3. At the same time, the slider 62 slides on the inner wall of the slideway 37, making it difficult for the positioning rod 61 to deviate during sliding, thereby improving the stability of the sliding of the positioning rod 61.

[0044] Refer to Figure 2 and Figure 4 , the first contact switch 63 is connected to the inner wall of the slideway 37 close to the moving mold 4. The first contact switch 63 is electrically connected to the electromagnet 69 located in the first air inlet passage. The second contact switch 64 is connected to the inner wall of the slideway 37 far from the moving mold 4. The second contact switch 64 is electrically connected to the electromagnet 69 located in the second air inlet passage; when the moving mold 4 and the fixed mold 3 are closed, the second contact switch 64 abuts against the slider 62 and is turned on, and the electromagnet 69 located in the second air inlet passage is powered on and has magnetic force; when the moving mold 4 separates from the fixed mold 3 for demolding, the first contact switch 63 abuts against the slider 62 and is turned on, and the electromagnet 69 located in the first air inlet passage is powered on and has magnetic force, realizing the directional activation of the electromagnets 69 in the first air inlet passage and the second air inlet passage, without manual control by the staff, thereby further improving the production efficiency of the product and reducing the production cost of the product.

[0045] Refer to Figure 2 and Figure 4 , the moving mold 4 is equipped with an installation component 8. The installation component 8 can detachably install the positioning rod 61 on the moving mold 4; the installation component 8 includes an insert block 81, an installation plate 82 and a second elastic member 83. The end of the insert block 81 is fixed to the end face of the positioning rod 61 in contact with the moving mold 4. An installation cavity 45 for the installation plate 82 to slide is provided on the surface of the moving mold 4. The sliding direction of the installation plate 82 is parallel to the sliding direction of the moving mold 4. An insertion groove 46 for the insert block 81 to be inserted is provided on the bottom wall of the installation cavity 45 close to the fixed mold 3. When the insert block 81 is inserted into the insertion groove 46, the outer peripheral surface of the insert block 81 abuts against the inner wall of the insertion groove 46 to form a limit. At the same time, the end face of the insert block 81 is flush with the bottom wall of the installation cavity 45. The second elastic member 83 can be a compression spring or a tension spring. In the embodiment of the present application, the second elastic member 83 is a compression spring and has a certain deformation ability. One end in the direction of the elastic force of the second elastic member 83 is connected to the inner wall of the installation cavity 45, and the other end in the direction of the elastic force of the second elastic member 83 is connected to the plate surface of the installation plate 82. The second elastic member 83 has an elastic force to drive the installation plate 82 to slide in the direction close to the insertion groove 46, and the plate surface of the installation plate 82 and the inner wall of the insertion groove 46 clamp both sides of the insert block 81 to form a fixed tendency.

[0046] The implementation principle of a two-color mold in an embodiment of this application is as follows: When producing a product, when the moving mold 4 and the fixed mold 3 are closed, the moving mold 4 drives the power rod 21 to slide along the inner wall of the power cavity 31 towards the fixed mold 3, pushing the cooling piston 22 closer to the second cooling section 322. The volume in the first cooling section 321 increases, and the air pressure in the first cooling section 321 decreases. External air enters the first cooling section 321 through the first one-way valve 23 and the first air inlet channel 33. The air comes into full contact with the inner wall of the first cooling section 321 and undergoes heat exchange, realizing the preliminary cooling of the fixed mold 3. At the same time, the volume in the second cooling section 322 decreases, and the air pressure in the second cooling section 322 increases. The air in the second cooling section 322 sequentially passes through the fourth one-way valve 26 and the second air outlet channel 36 and is discharged from the first air outlet channel 34, increasing the flow area of the air in the fixed mold 3, enabling the fixed mold 3 to come into full contact with the air and undergo heat exchange, thereby improving the cooling efficiency of the fixed mold 3; when the moving mold 4 moves away from the fixed mold 3 for demolding, it drives the power rod 21 to slide along the inner wall of the power cavity 31 away from the fixed mold 3, pushing the cooling piston 22 away from the second cooling section 322. The volume in the first cooling section 321 shrinks, and the air pressure in the first cooling section 321 increases. The air in the first cooling section 321 is discharged through the second one-way valve 24 and the first air outlet channel 34. At the same time, the volume in the second cooling section 322 becomes larger, and the air pressure in the second cooling section 322 decreases. External air enters the first cooling section 321 through the third one-way valve 25 and the second air inlet channel 35, pushing the air in the ventilation cavity 32 to flow, improving the cooling efficiency of the fixed mold 3, making it difficult for the inner wall of the cavity 42 located in the fixed mold 3 to heat up, shortening the cooling cycle for the rubber material in the cavity 42 to cool and form a product, and thus improving the efficiency of the rubber material in the cavity 42 to cool and form a product.

[0047] The above are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. Two-color mold, characterized in that: It includes a base (1), at least two cooling components (2), at least two fixed molds (3) and at least two moving molds (4). At least two of the fixed molds (3) are connected to the surface of the base (1) at intervals. The moving molds (4) correspond to the fixed molds (3) one by one and are slidably connected to the surface of the fixed molds (3). When the moving molds (4) and the fixed molds (3) are closed, a cavity (42) for injection molding is formed. The cooling components (2) correspond to the fixed molds (3) one by one and are connected. The cooling component (2) includes a power rod (21), a cooling piston (22), a check valve one (23) and a check valve two (24). The end of the power rod (21) is connected to the surface of the moving mold (4) facing the fixed mold (3). A power cavity (31) for the power rod (21) to slide is provided on the surface of the fixed mold (3) facing the moving mold (4). The sliding direction of the power rod (21) and the sliding direction of the moving mold (4) are parallel to each other. The cooling piston (22) is connected to the end face of the power rod (21) away from the moving mold (4). An air ventilation cavity (32) for the cooling piston (22) to slide is provided on the inner wall of the power cavity (31). The outer peripheral surface of the cooling piston (22) abuts against the inner wall of the air ventilation cavity (32) to form a seal. An air inlet channel one (33) is provided on the surface of the fixed mold (3). The air inlet channel one (33) communicates with the air ventilation cavity (32). The check valve one (23) is connected to the inner wall of the air inlet channel one (33). The check valve one (23) allows outside air to enter the air inlet channel one (33). An air outlet channel one (34) is provided on the surface of the fixed mold (3). The air outlet channel one (34) communicates with the air ventilation cavity (32). The air outlet channel one (34) is located between the cavity (42) and the air ventilation cavity (32). The check valve two (24) is connected to the inner wall of the air outlet channel one (34). The check valve two (24) allows the air in the air ventilation cavity (32) to be discharged from the air outlet channel one (34).

2. The two-color mold according to claim 1, wherein: The cooling component (2) further includes a check valve three (25) and a check valve four (26). The cooling piston (22) divides the air ventilation cavity (32) into a first cooling section (321) and a second cooling section (322). The first cooling section (321) communicates with the air inlet channel one (33) and the air outlet channel one (34). An air inlet channel two (35) is provided on the surface of the fixed mold (3). The air inlet channel two (35) communicates with the second cooling section (322). The check valve three (25) is connected to the inner wall of the air inlet channel two (35). The check valve three (25) allows outside air to enter the air inlet channel two (35). An air outlet channel two (36) is provided on the inner wall of the second cooling section (322). The air outlet channel two (36) communicates with the air outlet channel one (34). The check valve four (26) is connected to the inner wall of the air outlet channel two (36). The check valve four (26) allows the air in the second cooling section (322) to enter the air outlet channel two (36).

3. The two-color mold according to claim 2, characterized in that: The fixed mold (3) is connected with a cleaning component (6). The cleaning component (6) includes at least two first filters (66). One of the first filters (66) is connected to the inner wall of the first air inlet passage (33), and the other first filter (66) is connected to the inner wall of the second air inlet passage (35). The first filter (66) can filter impurities in the air.

4. The two-color mold according to claim 3, wherein: The cleaning component (6) further includes a positioning rod (61) and at least two scraping plates (65). The end of the positioning rod (61) is connected to the surface of the moving mold (4). At least two scraping plates (65) are connected to the surface of the positioning rod (61) facing the fixed mold (3) at intervals. The scraping plates (65) correspond to the first filters (66) one by one, and the scraping ends of the scraping plates (65) abut against the surface of the first filters (66) and scrape the impurities on the surface of the first filters (66).

5. The two-color mold according to claim 4, characterized in that: The cleaning component (6) further includes a slider (62). The end of the slider (62) is connected to the surface of the positioning rod (61) facing the fixed mold (3). A sliding groove (37) for the slider (62) to slide is formed on the surface of the fixed mold (3). When the positioning rod (61) slides, the slider (62) is driven to slide on the inner wall of the sliding groove (37).

6. The two-color mold according to claim 5, characterized in that: The cleaning component (6) further includes at least two second filters (68) and a plurality of elastic blocks (611). One of the second filters (68) is slidably connected to the inner wall of the first air flow passage. The second filter (68) is located between the first filter (66) and the first one-way valve (23). The other second filter (68) is slidably connected to the inner wall of the second air flow passage. The second filter (68) is located between the second filter (68) and the third one-way valve (25). The plurality of elastic blocks (611) are divided into two groups. Each group of elastic blocks (611) corresponds to the second filter (68) one by one. A plurality of elastic blocks (611) in the same group are connected to the end face of the second filter (68) facing the first filter (66) at intervals. The elastic blocks (611) correspond to the filter holes on the first filter (66) one by one and are embedded therein. The outer peripheral surface of the elastic blocks (611) abuts against the inner wall of the filter holes on the first filter (66) and scrapes off impurities.

7. The two-color mold according to claim 6, characterized in that: The cleaning component (6) further includes at least two first elastic members (67), at least two electromagnets (69) and at least two magnetic blocks (610). The first elastic members (67) correspond to the first filter screens (66) one by one. One end of the first elastic member (67) in the direction of its elastic force is connected to the end face of the first filter screen (66), and the other end of the first elastic member (67) in the direction of its elastic force is connected to the end face of the second filter screen (68). The first elastic member (67) has an elastic force to drive the second filter screen (68) to slide away from the first filter screen (66), and there is a tendency for the elastic block (611) to disengage from the filter holes on the first filter screen (66). The electromagnets (69) correspond to the first filter screens (66) one by one. The electromagnets (69) are connected to the end face of the first filter screen (66) facing the second filter screen (68). The magnetic blocks (610) correspond to the first filter screens (66) one by one. The magnetic blocks (610) are connected to the end face of the second filter screen (68) facing the first filter screen (66). The magnetic force of the electromagnets (69) is greater than the elastic force of the first elastic members (67). When the electromagnets (69) are energized and have magnetic force, the electromagnets (69) and the magnetic blocks (610) attract each other with opposite polarities, pushing the second filter screen (68) close to the first filter screen (66), and the elastic block (611) is embedded into the filter holes on the first filter screen (66).

8. The two-color mold according to claim 7, wherein: The cleaning component (6) further includes a first contact switch (63) and a second contact switch (64). The first contact switch (63) is connected to the inner wall of the slideway (37) close to the moving die (4), and the first contact switch (63) is electrically connected to the electromagnet (69) located in the first air inlet channel. The second contact switch (64) is connected to the inner wall of the slideway (37) away from the moving die (4), and the second contact switch (64) is electrically connected to the electromagnet (69) located in the second air inlet channel. When the moving die (4) and the fixed die (3) are clamped, the second contact switch (64) abuts against the slider (62) and is turned on, and the electromagnet (69) located in the second air inlet channel is energized and has magnetic force; when the moving die (4) moves away from the fixed die (3) and demolds, the first contact switch (63) abuts against the slider (62) and is turned on, and the electromagnet (69) located in the first air inlet channel is energized and has magnetic force.

9. The two-color mold according to claim 4, characterized in that: The moving die (4) is connected with a mounting component (8). The mounting component (8) includes an inserting block (81) and a mounting plate (82). The end of the inserting block (81) is connected to the end face of the positioning rod (61) facing the moving die (4). An installation cavity (45) for the mounting plate (82) to slide is formed on the surface of the moving die (4). The sliding direction of the mounting plate (82) is parallel to the sliding direction of the moving die (4). An inserting groove (46) for the inserting block (81) to be inserted is formed on the inner wall of the installation cavity (45). When the inserting block (81) is inserted into the inserting groove (46), the mounting plate (82) slides along the inner wall of the installation cavity (45) towards the inserting block (81), and the clamping of the two sides of the inserting block (81) is formed by the clamping of the plate surface of the mounting plate (82) and the inner wall of the inserting groove (46) to achieve fixation.

10. The two-color mold according to claim 9, wherein: The mounting component (8) further includes a second elastic member (83). One end of the second elastic member (83) in the direction of its elastic force is connected to the inner wall of the mounting cavity (45), and the other end of the second elastic member (83) in the direction of its elastic force is connected to the plate surface of the mounting plate (82). The second elastic member (83) has an elastic force to drive the mounting plate (82) to slide in the direction close to the embedding groove (46), and the plate surface of the mounting plate (82) and the inner wall of the embedding groove (46) clamp both sides of the embedding block (81) to form a tendency of fixation.

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