Injection molding feeding device

Abstract

The utility model relates to the technical field of injection molding, in particular to an injection molding feeding device which is provided with a distribution unit and a mixing unit, the distribution unit is provided with a raw material channel and a pigment channel, the raw material channel is communicated with the pigment channel, the mixing unit is provided with a mixing channel, and the mixing channel is communicated with the pigment channel. When raw materials and pigments are mixed, the raw material feeding unit feeds the materials into the raw material channel, the pigment feeding unit feeds the pigments into the pigments, the raw materials and the pigments are fed into the mixing channel through the raw material channel and the pigment channel respectively and mixed in the flowing process of the mixing channel, and coloring of the raw materials is achieved. The colored raw materials are further conveyed to the injection molding unit through the mixing channel and are introduced into the mold through the injection molding unit, finally, the colored plastic product is prepared, through the structure, automatic coloring of the plastic raw materials and the pigment can be achieved, manpower needed for raw material coloring is reduced, and convenience is provided for forming of the colored plastic product.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding, in particular to an injection molding feeding device. Background Art

[0002] Injection molding machines are widely used in practice, which plasticize thermoplastic or thermosetting plastics into a melt, inject the melt into a molding mold, and finally form various plastic products.

[0003] For example, the injection molding machine disclosed in the patent document with the publication number CN2892445Y includes an extruder and a molding die, wherein the molding die has a molding die cavity and a material injection port, and the extruder has a material inlet and a material outlet, and the material outlet is provided with a material guide pipe connected to the molding die. The fluid plastic raw material squeezed out by the extruder can be guided by the material guide pipe from the material outlet, and injected into the molding die cavity in sequence through the material injection port of the molding die that can be set to be diversified, and the fluid plastic raw material injected into the molding die cavity can be solidified and formed after cooling, and the molding of the product can be completed.

[0004] In order to achieve the coloring of plastic products, the plastic raw materials and pigments need to be colored before being injected into the mold, and then injected into the mold by extrusion of the piston to finally complete the molding of the colored plastic products. The coloring of existing plastic raw materials is generally carried out by manual stirring, which results in a large consumption of manpower for the plastic raw materials and causes inconvenience to the molding of colored plastic products. Utility Model Content

[0005] In view of this, it is necessary to provide an injection molding feeding device to solve the technical problem in the prior art that the coloring of colored plastic products requires a lot of manpower.

[0006] In order to achieve the above technical purpose, the technical solution of the utility model provides an injection molding feeding device, comprising:

[0007] A distribution unit is provided with a raw material channel and a pigment channel, wherein the raw material channel and the pigment channel are in communication;

[0008] A raw material supply unit, connected to the raw material channel, and used for supplying raw materials into the raw material channel;

[0009] a pigment supply unit connected to the pigment channel and used for supplying pigment into the pigment channel; and

[0010] The mixing unit is provided with a mixing channel, which is communicated with the pigment channel and is used for mixing the plastic raw material and the pigment introduced through the pigment channel, and passing the mixed plastic raw material and the pigment into the injection unit.

[0011] In some embodiments, the mixing unit includes a raw material mixer, two raw material receivers and two coloring mixers, the raw material mixer, the two raw material receivers and the two coloring mixers are all connected to the distribution unit, the two raw material receivers are respectively used to accommodate the two raw materials introduced into the pigment channel, the raw material mixer is used to mix the two raw materials, one of the coloring mixers is used to mix one of the raw materials and the pigment, and the other coloring mixer is used to mix the other raw material and the pigment.

[0012] In some embodiments, the dispensing unit includes two dispensers, both of which are provided with the raw material channel and the pigment channel, wherein the raw material channel and the pigment channel of one of the dispensers are respectively used to supply one of the raw materials and pigments, and the raw material channel and the pigment channel of the other dispenser are respectively used to supply another raw material and pigment.

[0013] In some embodiments, the raw material mixer is connected to two of the distributors, wherein one of the raw material receivers and the coloring mixer is connected to one of the distributors, and the other raw material receiver and the coloring mixer is connected to the other of the distributors.

[0014] In some embodiments, the two distributors are also provided with a coloring mixing channel, a raw material distribution channel and a raw material mixing channel. The coloring mixing channel is connected to the pigment channel, the raw material distribution channel is connected to the pigment channel and the raw material channel, the raw material mixing channel is connected to the raw material channel, the two coloring mixers are respectively connected to the coloring mixing channels of the two distributors, the two raw material receivers are respectively connected to the raw material distribution channels of the two distributors, and the raw material mixer is connected to the raw material mixing channels of the two distributors.

[0015] In some embodiments, the pigment inlet of the pigment channel is far away from the raw material mixing channel.

[0016] In some embodiments, the injection molding feeding device further comprises a raw material feeding unit, wherein the raw material feeding unit is connected to the raw material channels of the two distributors and is used for feeding different types of raw materials into the raw material channels of the two distributors.

[0017] In some embodiments, the raw material supply unit includes a driver and two pistons, and the two distributors are also provided with raw material feed ports, the raw material feed ports are connected to the raw material channels, the two pistons are respectively connected to the two raw material feed ports, and the driver is connected to the two pistons for driving the two pistons to inject raw materials into the two raw material feed ports respectively.

[0018] In some embodiments, the raw material feed port is provided with a one-way valve.

[0019] In some embodiments, the injection molding feeding device further includes two pigment supply units, which are respectively connected to the pigment channels of the two dispensers and are respectively used to introduce different types of pigments into the pigment channels of the two dispensers.

[0020] Compared with the prior art, the beneficial effects of the injection molding feeding device of the utility model include: the injection molding feeding device is provided with a distribution unit, a mixing unit, a raw material supply unit and a pigment supply unit, the distribution unit is provided with a raw material channel and a pigment channel, the raw material channel and the pigment channel are connected, the mixing unit is provided with a mixing channel, the mixing channel is connected with the pigment channel, when the raw material and the pigment are mixed, the raw material supply unit supplies the material into the raw material channel, the pigment supply unit supplies the pigment into the pigment, the raw material and the pigment are respectively supplied into the mixing channel through the raw material channel and the pigment channel, and are mixed during the flow process in the mixing channel to realize the coloring of the raw material, the colored raw material is further transported to the injection molding unit through the mixing channel, and is passed into the mold by the injection molding unit, and finally the preparation of colored plastic products is realized. Through the above structure, the automatic coloring of plastic raw materials and pigments can be realized, the manpower required for raw material coloring can be reduced, and the molding of colored plastic products is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the injection molding feeding device provided by an embodiment of the utility model;

[0022] Figure 2 It is a cutaway view of a distribution unit of an injection molding feeding device provided in an embodiment of the utility model.

[0023] Among them, the reference numerals in the figure are:

[0024] 10—distribution unit 11—raw material channel 12—pigment channel

[0025] 13—Distributor 14—Coloring and mixing channel 15—Raw material distribution channel

[0026] 16—Raw material mixing channel 17—Raw material feeding port 20—Mixing unit

[0027] 21 - Raw material mixer 22 - Raw material receiver 23 - Coloring mixer

[0028] 30 - Raw material supply unit 31 - Driver 32 - Piston

[0029] 40—Pigment supply unit 41—Pigment storage module 42—Pigment injection module

[0030] 171—One-way valve. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0032] The embodiment of the utility model provides an injection molding feeding device, which solves the technical problem in the prior art that the coloring of colored plastic products requires a lot of manpower consumption by automatically coloring the plastic raw materials.

[0033] like Figure 1-2 As shown, the injection molding feeding device of the utility model includes a distribution unit 10, a mixing unit 20, a raw material supply unit 30 and a pigment supply unit 40. The distribution unit 10 is provided with a raw material channel 11 and a pigment channel 12, and the raw material channel 11 and the pigment channel 12 are connected; the mixing unit 20 is provided with a mixing channel (not marked in the figure), and the mixing channel is connected with the pigment channel 12, which is used for mixing the plastic raw material and the pigment introduced through the pigment channel 12, and passing the mixed plastic raw material and the pigment into the injection molding unit (not marked in the figure), the raw material supply unit 30 is connected with the raw material channel 11, and is used for passing the raw material into the raw material channel 11; the pigment supply unit 40 is connected with the pigment channel 12, and is used for passing the pigment into the pigment channel 12.

[0034] Specifically, the injection molding feeding device is provided with a distribution unit 10 and a mixing unit 20. The distribution unit 10 is provided with a raw material channel 11 and a pigment channel 12, and the raw material channel 11 and the pigment channel 12 are connected. The mixing unit 20 is provided with a mixing channel, and the mixing channel is connected with the pigment channel 12. When mixing the raw material and the pigment, the raw material supply unit 30 supplies the material into the raw material channel 11, and the pigment supply unit 40 supplies the pigment into the pigment. The raw material and the pigment are respectively supplied into the mixing channel through the raw material channel 11 and the pigment channel 12, and are mixed during the flow process in the mixing channel to realize the coloring of the raw material. The colored raw material is further transported to the injection molding unit through the mixing channel, and is passed into the mold by the injection molding unit to finally realize the preparation of colored plastic products. Through the above structure, the automatic coloring of plastic raw materials and pigments can be realized, the manpower required for raw material coloring can be reduced, and convenience is provided for the molding of colored plastic products.

[0035] It can be understood that the number of the raw material channel 11, the pigment channel 12 and the mixing channel can be one. After the mixing of one of the raw materials and the pigment is completed, another raw material and the pigment can be mixed through the raw material channel 11, the pigment channel 12 and the mixing channel. The number of the raw material channel 11, the pigment channel 12 and the mixing channel can also be multiple. By transporting different raw materials and pigments through multiple raw material channels 11 and multiple pigment channels 12, and mixing them through multiple mixing channels respectively, multiple raw materials can be colored simultaneously.

[0036] In this embodiment, during injection molding, two kinds of glue (glue A and glue B) need to be mixed and then fed to the injection molding machine. In this embodiment, before the glue A and glue B are mixed, the AB mixed glue is mainly colored by coloring the glue A or glue B, wherein the AB mixed glue is mainly colored with blue, red or uncolored white.

[0037] In one embodiment, in order to realize the coloring of AB mixed glue to three different colors, such as Figure 1 As shown, the mixing unit 20 includes a raw material mixer 21, two raw material receivers 22 and two coloring mixers 23. The raw material mixer 21, the two raw material receivers 22 and the two coloring mixers 23 are all connected to the distribution unit 10. The two raw material receivers 22 are respectively used to accommodate the two raw materials introduced into the pigment channel 12. The raw material mixer 21 is used to mix the two raw materials, one of the coloring mixers 23 is used to mix one of the raw materials and the pigment, and the other coloring mixer 23 is used to mix the other raw material and the pigment.

[0038] Specifically, by setting the mixing unit 20 as a raw material mixer 21, two raw material receivers 22 and two coloring mixers 23, taking the case of coloring the AB mixed glue with white, blue and red, in the process of coloring the AB mixed glue, the raw material mixer 21 receives the A glue raw material and the B glue raw material, and mixes the received A glue raw material and B glue raw material to form a white AB mixed glue; one of the raw material receivers 22 receives the A glue raw material, and one of the coloring mixers 23 receives the B glue raw material and the blue pigment, and the B glue raw material and the blue pigment are mixed in the coloring mixer 23 to make the B glue raw material The raw material receiver 22 and the coloring mixer 23 respectively input the A glue raw material and the B glue raw material with blue color into the injection molding unit for mixing, so as to form a blue AB mixed glue; another raw material receiver 22 receives the B glue raw material, and another coloring mixer 23 receives the A glue raw material and the red pigment, and the A glue raw material and the red pigment are mixed in the coloring mixer 23 to make the A glue raw material with blue color, and the raw material receiver 22 and the coloring mixer 23 respectively input the B glue raw material and the A glue raw material with red color into the injection molding unit for mixing, so as to form a red AB mixed glue. Finally, white, blue and red AB mixed glue is realized.

[0039] It can be understood that the mixing unit 20 can be provided with a plurality of feeding channels respectively connected to the raw material mixer 21, the two raw material receivers 22 and the two coloring mixers 23, and a plurality of pigment injection devices and / or raw material injection devices can be provided respectively connected to each feeding channel to supply raw materials and / or pigments to the raw material mixer 21, the two raw material receivers 22 and the two coloring mixers 23.

[0040] In one embodiment, Figure 2As shown, the distribution unit 10 includes two distributors 13, and both distributors 13 are provided with a raw material channel 11 and a pigment channel 12. The raw material channel 11 and the pigment channel 12 of one distributor 13 are respectively used to supply one of the raw materials and pigments, and the raw material channel 11 and the pigment channel 12 of the other distributor 13 are respectively used to supply another raw material and pigment. Specifically, taking the mixing of white, blue and red into AB mixed glue as an example, one of the distributors 13 can be responsible for the distribution of A glue raw material and red pigment to the raw material mixer 21, one of the raw material receivers 22 and one of the coloring mixers 23, and the other distributor 13 is responsible for the distribution of B glue raw material and blue pigment to the raw material mixer 21, another raw material receiver 22 and another coloring mixer 23. Through the cooperation of the two distributors 13, the two groups of raw materials and two groups of pigments can be separately transported from both sides.

[0041] In this embodiment, the two distributors 13 are connected and formed in one piece.

[0042] In one embodiment, the raw material mixer 21 is connected to two distributors 13, such as Figure 1 As shown, one of the raw material receivers 22 and the coloring mixer 23 is connected to one of the distributors 13, and the other raw material receiver 22 and the coloring mixer 23 are connected to the other distributor 13. Specifically, the raw material mixer 21 can receive the A glue raw material and the B glue raw material delivered by the two distributors 13 at the same time by connecting the two distributors 13, so as to achieve the mixing of the A glue raw material and the B glue raw material. The raw material receiver 22 and one of the coloring mixers 23 connected to one of the distributors 13 respectively receive the A glue raw material and the A glue raw material mixed with red pigment, and the raw material receiver 22 and one of the coloring mixers 23 connected to the other distributor 13 respectively receive the B glue raw material and the B glue raw material mixed with red pigment, thereby achieving the orderly distribution of 5 different raw materials to the raw material mixer 21, the two raw material receivers 22 and the two coloring mixers 23 respectively.

[0043] In one embodiment, Figure 2 As shown, the two distributors 13 are also provided with a coloring and mixing channel 14, a raw material distribution channel 15 and a raw material mixing channel 16. The coloring and mixing channel 14 is connected to the pigment channel 12, the raw material distribution channel 15 is connected to the pigment channel 12 and the raw material channel 11, the raw material mixing channel 16 is connected to the raw material channel 11, the two coloring mixers 23 are respectively connected to the coloring and mixing channels 14 of the two distributors 13, the two raw material receivers 22 are respectively connected to the raw material distribution channels 15 of the two distributors 13, and the raw material mixer 21 is connected to the raw material mixing channels 16 of the two distributors 13.

[0044] Specifically, taking the mixing of white, blue and red colors into AB mixed glue as an example, the A glue raw material and the red pigment are respectively supplied to the raw material channel 11 and the pigment channel 12 of one of the distributors 13, and the B glue raw material and the blue pigment are respectively supplied to the raw material channel 11 and the pigment channel 12 of the other distributor 13, and part of the A glue raw material and part of the B glue raw material in the raw material channels 11 of the two distributors 13 are passed into the raw material mixer 21 through the raw material mixing channel 16, and are mixed by the raw material mixer 21; another part of the A glue raw material and part of the B glue raw material enter the pigment channel 12, and part of the A glue raw material and part of the B glue raw material entering the pigment channel 12 are directly passed from the raw material distribution channel 15 into the raw material receiver 22; another part of the A glue raw material entering the pigment channel 12 enters the corresponding coloring mixer 23 together with the red pigment passed into the pigment channel 12, so as to realize the mixing of the A glue raw material and the red pigment, and another part of the B glue raw material entering the pigment channel 12 enters the corresponding coloring mixer 23 together with the blue pigment, so as to realize the mixing of the B glue raw material and the blue pigment.

[0045] In one embodiment, in order to prevent the pigment from entering the raw material distribution channel 15 from the pigment channel 12, as shown in FIG. Figure 2 As shown, the pigment inlet of the pigment channel 12 is far away from the raw material mixing channel 16. Specifically, the pigment introduced through the pigment inlet will be blocked by the raw material inside the pigment channel 12, which can prevent the pigment from further flowing into the raw material mixing channel 16, thereby preventing the pigment from entering the raw material mixing channel 16.

[0046] It is understandable that a valve body structure that only allows the raw material to pass through can also be provided in the pigment channel 12 to block the flow of the pigment to the raw material distribution channel 15 .

[0047] In one embodiment, Figure 1 As shown, the raw material supply unit 30 is connected to the raw material channels 11 of the two distributors 13, and is used to pass different types of raw materials into the raw material channels 11 of the two distributors 13. Specifically, the raw material supply unit 30 can respectively inject the A glue raw material and the B glue raw material into the raw material channels 11 of the two distributors 13, and the distributors 13 redistribute them.

[0048] In one embodiment, Figure 1As shown, the raw material supply unit 30 includes a driver 31 and two pistons 32. The two distributors 13 are also provided with a raw material feed port 17. The raw material feed port 17 is communicated with the raw material channel 11. The two pistons 32 are respectively connected to the two raw material feed ports 17. The driver 31 is connected to the two pistons 32 to drive the two pistons 32 to respectively inject raw materials into the two raw material feed ports 17. Specifically, the A-rubber raw material and the B-rubber raw material are respectively introduced into the piston 32 cavities of the two pistons 32. The driver 31 drives the piston 32 rods of the two pistons 32 to move, and the A-rubber raw material and the B-rubber raw material in the two pistons 32 are respectively pressed into the raw material feed ports 17 of the two distributors 13, so as to realize the separate supply of the A-rubber raw material and the B-rubber raw material.

[0049] In one embodiment, Figure 2 As shown, the raw material feed port 17 is provided with a one-way valve 171 .

[0050] In one embodiment, Figure 1 As shown, two pigment supply units 40 are provided, and the two pigment supply units 40 are respectively connected to the pigment channels 12 of the two distributors 13, and are respectively used to introduce different types of pigments into the pigment channels 12 of the two distributors 13. Specifically, the two pigment supply units 40 can respectively realize the blue pigment and the red pigment into the pigment channels 12 of the two distributors 13.

[0051] In one embodiment, Figure 1 As shown, the two pigment supply units 40 each include a pigment storage module 41 and a pigment injection module 42. The pigment injection module 42 is connected to the feed end of the pigment channel 12. The pigment storage module 41 and the pigment injection module 42 store the pigment and pass the pigment into the pigment injection module 42. After the pigment injection module 42 is pressurized, the pigment is input into the pigment channel 12.

[0052] In one embodiment, the injection molding feeding device also includes three injection molding units (not marked in the figure), one of which is connected to the raw material mixer 21, can receive the white AB glue mixture from the raw material mixer 21, and inject the white AB glue mixture into the mold; another injection molding unit is connected to the raw material receiver 22 containing A glue raw material and the coloring mixer 23 containing blue B glue raw material, can receive A glue raw material and blue B glue raw material to form a blue AB glue mixture, and inject the blue AB glue mixture into the mold; another injection molding unit is connected to the raw material receiver 22 containing B glue raw material and the coloring mixer 23 containing red A glue raw material, can receive B glue raw material and red A glue raw material to form a red AB glue mixture, and inject the red AB glue mixture into the mold, finally realizing the molding of white, blue and red plastic products.

[0053] The specific working principle of the injection molding feeding device provided by the utility model is as follows: when the AB glue mixture is fed, the raw material feeding unit 30 injects the A glue raw material and the B glue raw material into the raw material channels 11 of the two distributors 13 through two pistons 32 respectively, and the two pigment feeding units 40 respectively feed blue pigment and red pigment into the pigment channels 12 of the two distributors 13. Part of the A glue raw material and part of the B glue raw material in the raw material channels 11 of the two distributors 13 are passed into the raw material mixer 21 through the raw material mixing channel 16, and are mixed by the raw material mixer 21 to form a white AB glue mixture and pass it into the injection molding unit; another part of the A glue raw material and part of the B glue raw material enter the pigment channel 12, and the part of the A glue raw material and part of the B glue raw material entering the pigment channel 12 are directly passed into the raw material receiver 22 from the raw material distribution channel 15; another part of the A glue raw material and part of the B glue raw material entering the pigment channel 12 The A glue raw material and the red pigment introduced into the pigment channel 12 enter the corresponding coloring mixer 23 together, so as to mix the A glue raw material and the red pigment to form the red A glue raw material. The other part of the B glue raw material entering the pigment channel 12 enters the corresponding coloring mixer 23 together with the blue pigment to mix the B glue raw material and the blue pigment to form the blue B glue raw material. The raw material receiver 22 containing the A glue raw material and the coloring mixer 23 containing the blue B glue raw material enter the injection molding unit to form a blue AB glue mixture; the raw material receiver 22 containing the B glue raw material and the coloring mixer 23 containing the red A glue raw material enter the injection molding unit to form a red AB glue mixture. The three injection molding units respectively pass the white AB glue mixture, the blue AB glue mixture and the red AB glue mixture into three molds, so as to realize the molding of plastic products of three different colors.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. An injection molding feeding device, characterized in that: include: A distribution unit is provided with a raw material channel and a pigment channel, wherein the raw material channel and the pigment channel are in communication; A raw material supply unit, connected to the raw material channel, and used for supplying raw materials into the raw material channel; A pigment supply unit, connected to the pigment channel, for supplying pigment into the pigment channel; and The mixing unit is provided with a mixing channel, which is communicated with the pigment channel and is used for mixing the plastic raw material and the pigment introduced through the pigment channel, and passing the mixed plastic raw material and the pigment into the injection unit.

2. The injection molding feeding device according to claim 1, characterized in that: The mixing unit includes a raw material mixer, two raw material receivers and two coloring mixers. The raw material mixer, the two raw material receivers and the two coloring mixers are all connected to the distribution unit. The two raw material receivers are respectively used to accommodate the two raw materials introduced into the pigment channel. The raw material mixer is used to mix the two raw materials. One of the coloring mixers is used to mix one of the raw materials and the pigment, and the other coloring mixer is used to mix the other raw material and the pigment.

3. The injection molding feeding device according to claim 2, characterized in that: The distribution unit includes two distributors, both of which are provided with the raw material channel and the pigment channel, wherein the raw material channel and the pigment channel of one of the distributors are respectively used to supply one of the raw materials and pigments, and the raw material channel and the pigment channel of the other distributor are respectively used to supply the other raw material and pigment.

4. The injection molding feeding device according to claim 3, characterized in that: The raw material mixer is connected to the two distributors, wherein one of the raw material receivers and the coloring mixer is connected to one of the distributors, and the other raw material receiver and the coloring mixer is connected to the other distributor.

5. The injection molding feeding device according to claim 3, characterized in that: The two distributors are also provided with a coloring and mixing channel, a raw material distribution channel and a raw material mixing channel. The coloring and mixing channel is connected with the pigment channel, the raw material distribution channel is connected with the pigment channel and the raw material channel, the raw material mixing channel is connected with the raw material channel, the two coloring mixers are respectively connected with the coloring and mixing channels of the two distributors, the two raw material receivers are respectively connected with the raw material distribution channels of the two distributors, and the raw material mixer is connected with the raw material mixing channels of the two distributors.

6. The injection molding feeding device according to claim 5, characterized in that: The pigment inlet of the pigment channel is far away from the raw material mixing channel.

7. The injection molding feeding device according to claim 3, characterized in that: The raw material supply unit is connected to the raw material channels of the two distributors, and is used to supply different types of raw materials to the raw material channels of the two distributors.

8. The injection molding feeding device according to claim 7, characterized in that: The raw material supply unit includes a driver and two pistons. The two distributors are also provided with raw material feed ports, which are connected to the raw material channels. The two pistons are respectively connected to the two raw material feed ports. The driver is connected to the two pistons for driving the two pistons to inject raw materials into the two raw material feed ports respectively.

9. The injection molding feeding device according to claim 8, characterized in that: The raw material feed port is provided with a one-way valve.

10. The injection molding feeding device according to claim 3, characterized in that: The pigment supply units are provided with two, and the two pigment supply units are respectively connected to the pigment channels of the two distributors, and are respectively used to supply different types of pigments to the pigment channels of the two distributors.

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