Remaining material cleaning device and cleaning method for injection molding nozzle of injection molding machine

Abstract

The invention relates to an injection molding machine injection molding nozzle excess material cleaning device which comprises a base station serving as a functional carrier of the whole cleaning device. The internal excess material cleaning mechanism is arranged on the base table and is used for injecting excess material dissolving liquid into an injection molding nozzle of the injection molding machine and sucking and removing a mixture of excess materials and the dissolving liquid; the external excess material rotary cutting mechanism is arranged on the base table and is used for rapidly removing residual excess materials on the outer wall of the injection molding nozzle; the displacement mechanism is used for driving the base table to move, so that the internal excess material cleaning mechanism and the external excess material rotary cutting mechanism directly face the injection molding nozzle and are close to the injection molding nozzle to realize cleaning; and the control machine body is arranged on the base table, is in signal connection with the injection molding machine, the internal excess material cleaning mechanism, the external excess material rotary cutting mechanism and the displacement mechanism and is used for cleaning operation of the driving device. The cleaning device has the effect of improving the cleaning effect and cleaning efficiency of the injection molding nozzle of the injection molding machine.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning residual material from injection molding nozzles, and in particular to a device and method for cleaning residual material from an injection molding nozzle of an injection molding machine. Background Art

[0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment for thermoplastic plastics or thermosetting plastics using plastic molding molds to make plastic products of various shapes. It is divided into vertical, horizontal and all-electric types. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it eject and fill the mold cavity. The injection nozzle is the most important component in the processing. Injection molding is achieved through the injection nozzle. However, after the injection is completed, there will be residual material inside and on the surface of the injection nozzle. In this way, the residual material may cause clogging of the injection nozzle when used next time, or the two pigments may bleed into each other, which cannot effectively improve the efficiency of injection molding. Therefore, a device for cleaning the residual material of the injection nozzle is needed. However, the traditional cleaning device needs to remove the injection nozzle and then clean it when cleaning the injection nozzle, which makes the cleaning efficiency low. After cleaning, the position or angle of the injection nozzle needs to be readjusted when installing, which greatly reduces the work efficiency.

[0003] After searching, CN202322959734X discloses a residual material cleaning device for the injection molding nozzle of an injection molding machine, including a diverter box; a partition is arranged inside the diverter box; the partition divides the diverter box into a first cavity and a second cavity; one side of the diverter box is connected to the water pipe through a first connecting port, and the second connecting port opened at the bottom is connected to the water tank; one side of the first cavity is connected to the injection molding connecting pipe; the other end of the injection molding connecting pipe is connected to the injection molding nozzle; one end of the injection molding nozzle is fixedly connected to the water tank. When in use, when the mixing hopper is placed on the placement port in the placement plate, by adding injection molding material to the inside of the mixing hopper, the material to be injected is transferred to the injection molding connecting pipe through the first cavity in the diverter box, and the other end of the injection molding connecting pipe is connected to the injection molding nozzle, thereby effectively realizing the injection molding operation of the injection molding nozzle.

[0004] The cleaning device described in the aforementioned patent uses water flushing to clean the residual material in the injection nozzle. However, the cooling water accelerates the cooling and solidification of the residual material in the injection molding machine, causing the residual material to adhere to the inner wall of the injection nozzle and prevent it from being blown out. Alternatively, when a large amount of residual material remains at the injection nozzle, the residual material is blocked at the injection nozzle opening by the rapid impact of the water flow and cannot be blown out. Furthermore, this device can only clean the interior of the injection nozzle and cannot clean material adhering to the outer wall of the injection nozzle. This results in low cleaning efficiency and poor results, leaving room for improvement. Summary of the Invention

[0005] In order to improve the cleaning effect and efficiency of the injection molding nozzle of an injection molding machine, the present application provides an injection molding nozzle residual material cleaning device and a cleaning method.

[0006] The present application provides an injection molding machine injection nozzle residual material cleaning device and cleaning method using the following technical solutions: In a first aspect, the present application provides a device for cleaning residual material from an injection molding nozzle of an injection molding machine, comprising: The base is the functional carrier of the entire cleaning device; An internal residual material cleaning mechanism is provided on the base platform and is used to inject residual material dissolving liquid into the injection nozzle of the injection molding machine and to suction and remove the mixture of residual material and dissolving liquid; The external residual material peeling mechanism is set on the base and is used to quickly remove the residual material on the outer wall of the injection nozzle; A displacement mechanism is used to drive the base to move so that the internal residual material cleaning mechanism and the external residual material peeling mechanism are directly opposite to the injection nozzle and close to the injection nozzle to achieve cleaning; The control body is arranged on the base and is connected to the injection molding machine, the internal residual material cleaning mechanism, the external residual material peeling mechanism and the displacement mechanism signal, and is used for the cleaning operation of the driving device.

[0007] Optionally, the internal residual material cleaning mechanism includes a cleaning tube body, a dissolving liquid pump and a suction pump. The cleaning tube body is arranged on the base platform. The cleaning tube body includes a dissolving liquid inner tube and a suction outer tube. The dissolving liquid inner tube and the suction outer tube are both cylindrical tubes. The dissolving liquid inner tube is coaxially arranged in the suction outer tube, and the inner diameter of the suction outer tube is larger than the outer diameter of the dissolving liquid inner tube. The dissolving liquid pump and the suction pump are both arranged in the base platform. The liquid inlet of the dissolving liquid pump is connected to the external dissolving liquid storage barrel, the liquid outlet of the dissolving liquid pump is connected to the dissolving liquid inner tube, and the liquid inlet of the suction pump is connected to the inner cavity of the suction outer tube.

[0008] Furthermore, a frustum-shaped suction chamber is provided at the end of the suction outer tube away from the base, the end of the suction chamber away from the base is the end with a larger diameter, and a plurality of suction ports connected to the suction chamber are distributed circumferentially at the end of the suction outer tube close to the base, and the plurality of suction ports are connected to the liquid inlet of the suction pump through a multi-way tube.

[0009] Furthermore, the suction port is a cylindrical spiral channel.

[0010] Furthermore, a sealing sleeve is provided outside the outer suction tube, and the outer suction tube can be transitionally fitted and inserted into the injection nozzle of the injection molding machine under the drive of the displacement mechanism, and when the outer suction tube is inserted into the injection nozzle, the sealing sleeve is interference fit with the injection nozzle, and a chamfer is provided on the outer wall of the end of the sealing sleeve facing away from the base.

[0011] Furthermore, the external residual material peeling mechanism includes a positioning tube, a peeling tube, a peeling blade and a driving assembly. The positioning tube is driven to rotate by the driving assembly and is set on the base. The positioning tube is a cylindrical tube and is coaxially arranged outside the suction outer tube. The peeling tube is an elastic material tube. The peeling tube is fixedly connected to the end of the positioning tube away from the base. The peeling tube can be mounted on the outer wall of the injection nozzle of the injection molding machine under the drive of the displacement mechanism. The peeling blade is provided with multiple blades and is circumferentially distributed on the inner wall of the peeling tube for cutting the residual material on the outer wall of the injection nozzle.

[0012] Furthermore, the rotary cutting blade is a plastic blade, and the rotary cutting blade can be detachably inserted into the inner wall of the rotary cutting tube.

[0013] Furthermore, a plurality of infrared sensors are provided on the end face of the suction outer tube facing away from the base. The plurality of infrared sensors are distributed in a circular array and are electrically connected to the control body. The control body is used to receive the position signal sensed by the infrared sensor and drive the displacement mechanism to drive the cleaning tube body to be coaxial with the injection nozzle.

[0014] Furthermore, the inner diameter of the outer suction tube is at least three times the inner diameter of the dissolving liquid inner tube.

[0015] In a second aspect, the present application provides a method for cleaning residual material from an injection molding machine nozzle, which uses the above-mentioned device for cleaning residual material from an injection molding machine nozzle, and comprises the following steps: The control body receives an injection completion signal from the injection molding machine; The control body controls the displacement mechanism to start, driving the base, the internal residual material cleaning mechanism and the external residual material peeling mechanism to the injection nozzle of the injection molding machine; The internal residual material cleaning mechanism dissolves and sucks the residual material in the injection nozzle; The external residual material peeling mechanism cuts and cleans the residual material on the outer wall of the injection nozzle.

[0016] Optionally, the internal residual material cleaning mechanism and the external residual material peeling mechanism operate synchronously under the control of the control body.

[0017] In summary, this application includes at least one of the following beneficial technical effects: When the present invention is in use, the injection molding machine sends an end signal to the control body after the injection molding is completed. The control body controls the displacement mechanism to send the internal residual material cleaning mechanism and the external residual material cutting mechanism to the injection nozzle of the injection molding machine. The internal residual material cleaning mechanism dissolves the residual material by injecting a dissolving liquid into the injection nozzle and quickly absorbs and collects it. The external residual material cutting mechanism synchronously cuts and scrapes the residual material on the outer wall of the injection nozzle while the internal residual material cleaning mechanism cleans. The cleaning efficiency is high and the cleaning effect is good.

[0018] When the present invention is used, by arranging a sealing sleeve outside the suction outer tube and providing a chamfer at the end of the sealing sleeve, the insertion of the suction outer tube and the sealing sleeve as a whole can be facilitated, and the possibility of leakage of the solution and residual material can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a device for cleaning residual material from an injection molding machine nozzle provided by an embodiment of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a device for cleaning residual material from an injection molding machine nozzle provided by an embodiment of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the cross-sectional structure of the internal residual material cleaning mechanism and the external residual material peeling mechanism of the embodiment of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the cross-sectional structure of the internal residual material cleaning mechanism and the external residual material peeling mechanism of the embodiment of the present invention. Figure 2 .

[0020] Figure numerals: 1. base; 2. internal residual material cleaning mechanism; 21. cleaning tube body; 211. dissolving liquid inner tube; 212. suction outer tube; 2121. suction chamber; 2122. suction port; 22. dissolving liquid pump; 23. suction pump; 3. external residual material peeling mechanism; 31. positioning tube; 32. peeling tube; 321. chip groove; 33. peeling blade; 34. driving assembly; 341. driving motor; 342. driving gear; 343. driven gear; 4. displacement mechanism; 41. first linear module; 42. second linear module; 5. control body; 6. multi-way tube; 7. sealing sleeve; 8. infrared sensor. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meanings understood by persons having ordinary skills in the field to which this application belongs. The words "a" or "an" and the like used in the patent application specification and claims of this application do not indicate a limitation on quantity, but rather indicate the presence of at least one.

[0023] The following is combined with Figure 1-4 This application is described in further detail.

[0024] In a first aspect, an embodiment of the present application discloses a device for cleaning residual material from an injection nozzle of an injection molding machine.

[0025] Reference Figures 1-4 The cleaning mechanism 3 of the outer wall of the injection molding machine is used to clean the residual material on the outer wall of the injection molding machine nozzle.

[0026] Reference Figures 1-4 The internal residual material cleaning mechanism 2 includes a cleaning tube body 21, a dissolving liquid pump 22 and a suction pump 23. The cleaning tube body 21 is plugged and fixed on the base 1. The cleaning tube body 21 includes an integrally formed dissolving liquid inner tube 211 and a suction outer tube 212. The dissolving liquid inner tube 211 and the suction outer tube 212 are both cylindrical tubes. The dissolving liquid inner tube 211 is coaxially arranged in the suction outer tube 212, and the inner diameter of the suction outer tube 212 is larger than the outer diameter of the dissolving liquid inner tube 211. The dissolving liquid pump 22 and the suction pump 23 are both installed. In the base 1, the liquid inlet of the dissolving liquid pump 22 is connected to the external dissolving liquid storage tank. The dissolving liquid can be tetrahydrofuran or dimethylformamide. The liquid outlet of the dissolving liquid pump 22 is connected to the dissolving liquid inner tube 211 through a connecting pipe. The liquid inlet of the suction pump 23 is connected to the inner cavity of the suction outer tube 212 through a connecting pipe. In this embodiment, the inner diameter of the suction outer tube 212 is at least 3 times the inner diameter of the dissolving liquid inner tube 211 to ensure the suction efficiency of the suction outer tube 212. The dissolving liquid is preferably tetrahydrofuran.

[0027] Furthermore, a conical suction chamber 2121 is integrally formed at the end of the suction outer tube 212 away from the base 1, and the end of the suction chamber 2121 away from the base 1 is the end with a larger diameter. A plurality of suction ports 2122 connected to the suction chamber 2121 are distributed circumferentially at the end of the suction outer tube 212 close to the base 1, and the plurality of suction ports 2122 are connected to the liquid inlet of the suction pump 23 through a multi-way tube 6. Specifically, the suction port 2122 is a cylindrical spiral channel, and the pitch of the channel is greater than or equal to 5 times the inner diameter of the suction outer tube 212, and the overall length of the channel is 0.1-0.2 times the channel pitch, so that a spiral suction force can be formed in the suction chamber 2121 when suction is performed through the suction port 2122. The spiral suction design enables gas or liquid to better utilize the advantages of centrifugal force and spiral shape during the flow process, thereby improving the suction efficiency.

[0028] Furthermore, a sealing sleeve 7 is provided on the outer adhesive sleeve of the suction outer tube 212. The suction outer tube 212 can be inserted into the injection nozzle of the injection molding machine through transition fit under the drive of the displacement mechanism 4. When the suction outer tube 212 is inserted into the injection nozzle, the sealing sleeve 7 is inserted into the injection nozzle with interference fit. A chamfer is provided on the outer wall of the end of the sealing sleeve 7 facing away from the base 1 to facilitate the insertion of the sealing sleeve 7. At the same time, the possibility of leakage of dissolved liquid and residual material when the sealing sleeve 7 and the suction outer tube 212 are inserted and removed can be reduced.

[0029] Reference Figures 1-4 The external residual material peeling mechanism 3 includes a positioning tube 31, a peeling tube 32, a peeling blade 33 and a driving assembly 34. The positioning tube 31 is driven and rotated by the driving assembly 34 and is installed on the base 1. The positioning tube 31 is a cylindrical tube and rotates coaxially outside the suction outer tube 212. The peeling tube 32 is an elastic material tube. The peeling tube 32 is thermally bonded to the end of the positioning tube 31 away from the base 1. The peeling tube 32 can be sleeved on the outer wall of the injection nozzle of the injection molding machine under the drive of the displacement mechanism 4. The peeling blade 33 is installed with multiple and circumferentially distributed on the inner wall of the peeling tube 32 for cutting the residual material on the outer wall of the injection nozzle. The peeling blade 33 can be a plastic material blade or a metal material blade. In this embodiment, the peeling blade 33 is preferably a plastic material blade to reduce the friction damage of the peeling blade 33 on the outer wall of the injection nozzle. The peeling blade 33 is detachable and plugged into the inner wall of the peeling tube 32, so that the peeling blade 33 can be regularly replaced to improve the service life of the entire device.

[0030] Furthermore, a plurality of chip removal grooves 321 are evenly spaced around the circumference on the outer wall of the rotary cutting tube 32 , and the rotary cutting blade 33 is correspondingly arranged between two adjacent chip removal grooves 321 to discharge the cutting waste in a timely manner.

[0031] Reference Figure 1 and Figure 2The driving assembly 34 includes a driving motor 341, a driving gear 342 and a driven gear 343. The driving motor 341 is installed in the base 1, the driving gear 342 is fixedly sleeved on the output shaft of the driving motor 341, and the driven gear 343 is coaxially fixedly sleeved on the outer wall of the positioning tube 31. The driving gear 342 and the driven gear 343 are engaged with each other, and then the positioning tube 31 and the peeling tube 32 can be driven to rotate synchronously through gear transmission, thereby realizing the peeling of the peeling blade 33 in the peeling tube 32.

[0032] Reference Figure 1 A plurality of infrared sensors 8 are installed on the end face of the suction outer tube 212 away from the base 1. The plurality of infrared sensors 8 are distributed in a circular array and are all electrically connected to the control body 5 in synchronization. The control body 5 is used to receive the position signal sensed by the infrared sensor 8 and drive the displacement mechanism 4 to drive the cleaning tube body 21 to be coaxial with the injection nozzle, thereby improving the overall positioning efficiency of the device and thus improving the cleaning efficiency; at the same time, the infrared sensor 8 can also timely feedback the position information of the suction outer tube 212 during the cleaning operation of the cleaning tube body 21, thereby realizing the control of the insertion and removal suction process of the cleaning tube body 21.

[0033] Reference Figures 1-4 The displacement mechanism 4 includes a first linear module 41 and a second linear module 42. The first linear module 41 and the second linear module 42 are arranged perpendicular to each other. The second linear module 42 is installed on the slider of the first linear module 41, and the base is installed on the slider of the second linear module 42. In this embodiment, the use of the linear module is existing technology and will not be described in detail.

[0034] In a second aspect, the present application also discloses a method for cleaning residual material from an injection molding machine nozzle, which uses the above-mentioned device for cleaning residual material from an injection molding machine nozzle, and includes the following steps: S1, after the injection molding machine completes the injection molding, it sends an injection completion signal to the control body 5; S2, the control body 5 controls the displacement mechanism 4 to start, and the base 1, the internal residual material cleaning mechanism 2 and the external residual material peeling mechanism 3 are moved to the injection nozzle of the injection molding machine through the cooperation of the first linear module 41 and the second linear module 42 arranged perpendicular to each other. At the same time, when the multiple infrared sensors on the suction outer tube 212 of the internal residual material cleaning mechanism 2 sense the injection nozzle, the sensing data is promptly fed back to the control body 5 to calculate the precise position of the injection nozzle. The control body 5 can then control the displacement mechanism 4 according to the calculated precise position to more quickly move the internal residual material cleaning mechanism 2 and the external residual material peeling mechanism 3 to be coaxial with the injection nozzle; S3, under the drive of the displacement mechanism 4, the cleaning tube body 21 of the internal residual material cleaning mechanism 2 is gradually inserted into the injection molding nozzle until it is in place, and then the dissolving liquid pump 22 sucks the dissolving liquid into the dissolving liquid inner tube 211 and sprays it into the injection molding nozzle to dissolve the injection molding residual material in the injection molding nozzle. After an interval of 5S, the suction pump 23 starts to suck the dissolving liquid and residual material mixture in the injection molding nozzle through the suction outer tube 212, and then discharges it through the liquid outlet of the suction pump 23, thereby completing the cleaning operation of the residual material inside the injection molding nozzle.

[0035] S4, while the cleaning tube body 21 is inserted into the injection nozzle, the rotary cutting tube 32 on the external residual material rotary cutting mechanism 3 is sleeved on the outer wall of the injection nozzle. While the dissolving liquid is injected into the inner tube 211 of the dissolving liquid, the driving component 34 drives the positioning tube 31 and the rotary cutting tube 32 to rotate synchronously, and then the rotary cutting blade 33 on the inner wall of the rotary cutting tube 32 is used to cut and clean the residual material on the outer wall of the injection nozzle. While cleaning, the cut waste is discharged in time through the chip removal groove 321 on the rotary cutting tube 32, which is convenient and quick.

[0036] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A device for cleaning residual material from an injection molding nozzle of an injection molding machine, comprising: The base (1) is the functional carrier of the entire cleaning device; An internal residual material cleaning mechanism (2) is arranged on the base (1) and is used to inject residual material dissolving liquid into the injection molding nozzle of the injection molding machine and to remove the mixture of the residual material and the dissolving liquid by suction; An external residual material peeling mechanism (3) is arranged on the base (1) and is used to quickly remove residual material on the outer wall of the injection nozzle; A displacement mechanism (4) is used to drive the base (1) to move so that the internal residual material cleaning mechanism (2) and the external residual material peeling mechanism (3) are directly opposite to the injection nozzle and close to the injection nozzle to achieve cleaning; The control body (5) is arranged on the base (1) and is signal-connected to the injection molding machine, the internal residual material cleaning mechanism (2), the external residual material peeling mechanism (3) and the displacement mechanism (4), and is used for cleaning operations of the driving device.

2. The device for cleaning residual material from the injection molding nozzle of an injection molding machine according to claim 1, characterized in that: The internal residual material cleaning mechanism (2) comprises a cleaning tube body (21), a dissolving liquid pump (22) and a suction pump (23). The cleaning tube body (21) is arranged on the base (1). The cleaning tube body (21) comprises a dissolving liquid inner tube (211) and a suction outer tube (212). The dissolving liquid inner tube (211) and the suction outer tube (212) are both cylindrical tubes. The dissolving liquid inner tube (211) is coaxially arranged inside the suction outer tube (212), and the inner diameter of the suction outer tube (212) is larger than the outer diameter of the dissolving liquid inner tube (211). The dissolving liquid pump (22) and the suction pump (23) are both arranged inside the base (1). The liquid inlet of the dissolving liquid pump (22) is connected to an external dissolving liquid storage barrel. The liquid outlet of the dissolving liquid pump (22) is in communication with the dissolving liquid inner tube (211). The liquid inlet of the suction pump (23) is in communication with the inner cavity of the suction outer tube (212).

3. The device for cleaning residual material from the injection molding nozzle of an injection molding machine according to claim 2, characterized in that: A truncated cone-shaped suction chamber (2121) is provided at one end of the suction outer tube (212) away from the base (1); the end of the suction chamber (2121) away from the base (1) is an end with a larger diameter; a plurality of suction ports (2122) connected to the suction chamber (2121) are distributed circumferentially at one end of the suction outer tube (212) close to the base (1); the plurality of suction ports (2122) are connected to the liquid inlet of the suction pump (23) via a multi-way tube (6).

4. The device for cleaning residual material from the injection molding nozzle of an injection molding machine according to claim 3, characterized in that: The suction port (2122) is a cylindrical spiral channel.

5. The device for cleaning residual material from the injection molding nozzle of an injection molding machine according to claim 2, characterized in that: A sealing sleeve (7) is arranged outside the outer suction tube (212); the outer suction tube (212) can be inserted into the injection nozzle of the injection molding machine in a transition fit under the drive of the displacement mechanism (4); and when the outer suction tube (212) is inserted into the injection nozzle, the sealing sleeve (7) is inserted into the injection nozzle in an interference fit; and a chamfer is arranged on the outer wall of one end of the sealing sleeve (7) facing away from the base (1).

6. The device for cleaning residual material from the injection molding nozzle of an injection molding machine according to claim 2, characterized in that: The external residual material peeling mechanism (3) comprises a positioning tube (31), a peeling tube (32), a peeling blade (33) and a driving assembly (34); the positioning tube (31) is driven and rotated by the driving assembly (34) and is arranged on the base (1); the positioning tube (31) is a cylindrical tube and is coaxially arranged outside the suction outer tube (212); the peeling tube (32) is an elastic material tube; the peeling tube (32) is fixedly connected to one end of the positioning tube (31) away from the base (1); the peeling tube (32) can be sleeved on the outer wall of the injection nozzle of the injection molding machine under the drive of the displacement mechanism (4); a plurality of peeling blades (33) are arranged and circumferentially distributed on the inner wall of the peeling tube (32) for cutting residual material on the outer wall of the injection nozzle.

7. The device for cleaning residual material from the injection molding nozzle of an injection molding machine according to claim 6, characterized in that: The rotary cutting blade (33) is a blade made of plastic material, and the rotary cutting blade (33) is detachably plugged into the inner wall of the rotary cutting tube (32).

8. The device for cleaning residual material from the injection molding nozzle of an injection molding machine according to claim 2, characterized in that: A plurality of infrared sensors (8) are arranged on the end surface of the suction outer tube (212) facing away from the base (1); the plurality of infrared sensors (8) are distributed in a circular array and are all electrically connected to the control body (5); the control body (5) is used to receive position signals sensed by the infrared sensors (8) and drive the displacement mechanism (4) to drive the cleaning tube body (21) to be coaxial with the injection nozzle.

9. The device for cleaning residual material from the injection molding nozzle of an injection molding machine according to claim 2, characterized in that: The inner diameter of the outer suction tube (212) is at least three times the inner diameter of the dissolving liquid inner tube (211).

10. A method for cleaning residual material from an injection molding machine nozzle, characterized in that: The device for cleaning residual material from the injection molding nozzle of an injection molding machine as claimed in any one of claims 1 to 9 comprises the following steps: The control body (5) receives an injection completion signal from the injection molding machine; The control body (5) controls the displacement mechanism (4) to start, thereby driving the base (1), the internal residual material cleaning mechanism (2) and the external residual material peeling mechanism (3) to the injection nozzle of the injection molding machine; The internal residual material cleaning mechanism (2) performs a dissolving, suction and cleaning operation on the residual material in the injection nozzle; The external residual material peeling mechanism (3) cuts and cleans the residual material on the outer wall of the injection nozzle.

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