Shaft sleeve feeding machine for injection molding

Abstract

The invention discloses a shaft sleeve feeding machine for injection molding. The shaft sleeve feeding machine comprises a rack, a flexible vibration disc, a stock bin, a positioning base, a light source plate, a visual device, an XYZ-axis transferring module, a taking and placing mechanism and a controller. The machine frame comprises a frame body and a vertical frame. The flexible vibration disc is assembled on the top of the frame body; the stock bin and the positioning base are located on the two opposite sides of the flexible vibration disc respectively, and a plurality of positioning pins which are separated from one another and protrude upwards are arranged on the positioning base. The light source plate is located over the flexible vibration disc and provided with an avoiding through hole. The visual device is arranged in the avoiding through hole; the XYZ-axis transfer module is assembled on the vertical frame; the taking and placing mechanism is assembled on the XYZ-axis transferring module and comprises an overturning driver, a rotating driver and a grabbing assembly. The controller is electrically connected with the flexible vibration disc, the visual device, the XYZ-axis transferring module and the taking and placing mechanism. The shaft sleeves which are arranged in disorder are correctly placed on the positioning pins, so that the positions and the orientations of the shaft sleeves which are subsequently embedded into a mold are correct.

Description

Technical Field

[0001] The invention relates to a feeder used for injection molding, in particular to a shaft sleeve feeder used for injection molding. Background Art

[0002] As is known to all, a fan comprises components such as a fan blade with a shaft and a fan shell with a shaft sleeve. The fan blade is assembled on the fan shell by means of the insertion fit between the shaft and the shaft sleeve.

[0003] Among them, the production process of the fan shell is inseparable from the use of injection molds. First, the sleeve is buried in the injection mold, and then the molten material is injected into the injection mold to obtain the fan shell with the sleeve.

[0004] At present, the operator manually places the sleeve at the loading position, and then the robot of the injection molding machine grabs the sleeve at the loading position and embeds it into the injection mold. Therefore, there are defects of low efficiency and heavy burden on the operator, and it cannot be adapted to the occasion of automated operation.

[0005] Therefore, there is an urgent need for a kind of injection molding sleeve feeder to overcome above-mentioned defect. Summary of the invention

[0006] The object of the present invention is to provide a sleeve feeder for injection molding, so as to correctly place the sleeves arranged in disorder on the positioning pins, thereby ensuring that the sleeves are subsequently embedded in the injection mold in the correct position and orientation.

[0007] In order to achieve the above-mentioned purpose, the sleeve feeder for injection molding of the present invention includes a frame, a flexible vibration disk, a silo, a positioning base, a light source board, a visual device, an XYZ axis transfer module, a pick-and-place mechanism and a controller. The frame includes a frame and a stand that protrudes upward from the top of the frame; the flexible vibration disk is mounted on the top of the frame; the silo is mounted on the top of the frame and allows the sleeve to fall into the flexible vibration disk, and the silo is located on one side of the flexible vibration disk; the positioning base is mounted on the top of the frame and on the other side opposite to the flexible vibration disk, and the positioning base is provided with a plurality of positioning pins that are separated from each other and protrude upward; the light source board is located directly above the flexible vibration disk, and a avoidance through hole is opened at the center of the light source board; the visual device is arranged in the avoidance through hole and visually captures the sleeve spread out by the vibration of the flexible vibration disk; the XYZ axis transfer module is mounted on the stand; the pick-and-place mechanism is mounted on On the XYZ-axis transfer module, the pick-and-place mechanism includes a flipping driver, a rotating driver and a grabbing assembly. The flipping driver is used to drive the rotating driver and the grabbing assembly to switch between a horizontal position and a vertical position. The rotating driver is used to drive the grabbing assembly to rotate around a horizontal center line to change the orientation of the sleeve grasped by the grabbing assembly. The controller is electrically connected to the flexible vibration disk, the visual device, the XYZ-axis transfer module and the pick-and-place mechanism respectively. The controller controls the coordinated actions of the XYZ-axis transfer module and the pick-and-place mechanism according to the collected information fed back by the visual device, so that the pick-and-place mechanism, with the cooperation of the XYZ-axis transfer module, can correctly place the sleeve spread out by the flexible vibration disk on the positioning pin.

[0008] Compared with the prior art, before the pick-and-place mechanism grabs the sleeve in the flexible vibration disk, the visual device first performs visual acquisition of the sleeve spread out by the vibration of the flexible vibration disk, and feeds back the acquired signal to the controller, which processes the signal; after processing, the controller controls the coordinated action of the XYZ axis transfer module and the pick-and-place mechanism, so that the pick-and-place mechanism, with the cooperation of the XYZ axis transfer module, correctly places the sleeve spread out by the flexible vibration disk on the positioning pin; thereby ensuring that the sleeve is subsequently embedded in the injection mold in the correct position and orientation. In addition, since the visual device is arranged in the avoidance through hole opened at the center of the light source board, the light source board provides the visual device with a lighting effect evenly distributed from the center to the surroundings, thereby improving the reliability of the visual acquisition of the visual device; with the help of the pick-and-place mechanism including the flip driver, the rotation driver and the grabbing assembly, it is effectively ensured that the flat sleeve in the flexible vibration disk is placed upright and correctly oriented on the positioning pin.

[0009] Preferably, the sleeve feeder for injection molding of the present invention also includes a reciprocating drive electrically connected to the controller, and the reciprocating drive is respectively arranged on two opposite sides of the flexible vibration disk, and the side of the flexible vibration disk where the reciprocating drive is located is adjacent to the side of the flexible vibration disk where the silo is located; the positioning base can be slidably reciprocatingly on the top of the frame, and the positioning base is also assembled and connected to the output end of the reciprocating drive. The positioning base can be switched between at least one discharging position and a receiving position under the drive of the reciprocating drive; the positioning base is close to the flexible vibration disk at the receiving position, and the positioning base is far away from the flexible vibration disk at the discharging position.

[0010] Preferably, the positioning base includes a base body and an insert body that can be inserted into the base body from the top of the base body, the insert body has a circular boss and a plug-in column located below the circular boss, the base body is provided with a sleeve for the plug-in column to be inserted and matched, and the sleeve is provided with a first through hole that laterally penetrates the sleeve; the positioning pin is arranged above the circular boss and connected to the circular boss, and the circular boss also protrudes laterally from the positioning pin.

[0011] Preferably, the plug-in column is provided with a second through hole which penetrates the plug-in column laterally and is aligned with the first through hole; and the center lines of the plug-in column, the round boss and the positioning pin coincide with each other.

[0012] Preferably, the base body is in a "door" shape so that the positioning pin is higher than the flexible vibration plate.

[0013] Preferably, the reciprocating drive is a pneumatic cylinder or a hydraulic cylinder.

[0014] Preferably, the stand is a gantry, and the silo is also located in the space enclosed by the gantry.

[0015] Preferably, the material bin comprises an upper material bin which is vertically swung and a lower material bin which is horizontally placed, and the lower material bin also partially extends to the corresponding upper side of the flexible vibration plate; the flexible vibration plate is square in shape.

[0016] Preferably, the flipping driver is a telescopic air cylinder or a telescopic hydraulic cylinder, the rotating driver is a rotating air cylinder or a rotating hydraulic cylinder, and the grasping component is a pneumatic finger.

[0017] Preferably, the positioning pin is a stepped shaft that is smaller at the top and larger at the bottom, and a chamfered structure is provided at the upper end of the stepped shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a perspective view of the sleeve feeder for injection molding of the present invention.

[0019] Figure 2 It is a three-dimensional diagram showing the silo and the flexible vibrating plate.

[0020] Figure 3 It is a three-dimensional view showing the locating base with a sleeve mounted on the locating pin on the left.

[0021] Figure 4 yes Figure 3 3D exploded view of .

[0022] Figure 5 It is a three-dimensional view showing the insert body and the positioning pins thereon.

[0023] Figure 6 is a perspective view showing the pick and place mechanism with the rotary drive and gripper assembly in a horizontal position.

[0024] Figure 7 yes Figure 6 Floor plan.

[0025] Figure 8 is Figure 7 A plan view of the base with the rotary drive and gripping assembly in a vertical position.

[0026] Fig. 9 It is a plan view showing the electrical connection between the controller and the flexible vibration plate, the visual device, the XYZ axis transfer module, the pick-and-place mechanism and the reciprocating drive.

[0027] Fig.10 This is a three-dimensional diagram of the correct orientation of the sleeve. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings.

[0029] See also Figure 1 The sleeve feeder 100 for injection molding of the present invention is suitable for vibrating and spreading the randomly arranged sleeves 200, and placing the spread sleeves 200 in the correct orientation on the positioning pins 41 described below, thereby ensuring that the robot of the injection molding machine correctly embeds the sleeves 200 on the positioning pins 41 into the injection mold.

[0030] Recombination Figure 3 and Fig. 9 The present invention provides a sleeve feeder 100 for injection molding, which includes a frame 10, a flexible vibration plate 20, a hopper 30, a positioning base 40, a light source board 50, a visual device 60, an XYZ axis transfer module 70, a pick-and-place mechanism 80, and a controller 90a. The frame 10 includes a frame 11 and a stand 12 protruding upward from the top 111 of the frame 11. Optionally, Figure 1In the embodiment, as an example, the frame 11 is a square frame, and the stand 12 is a gantry frame arranged at the rear side of the top 111 of the frame 11. This design allows the stand 12 to leave more space for the top 111 of the frame 11, thereby facilitating the arrangement of the flexible vibration plate 20 and the positioning base 40 at the top 111 of the frame 11; in addition, the stand 12 is a gantry frame, and the silo 30 can be arranged inside the gantry frame, thereby making the silo 30 and the stand 12 more compact; obviously, according to actual needs, the shapes of the frame 11 and the stand 12 can also be other, so it is not limited to the above. Figure 1 Limits shown.

[0031] The flexible vibration plate 20 is mounted on the top 111 of the frame 11, and the frame 11 provides support for the flexible vibration plate 20; Figure 1 and Figure 2 As an example, the flexible vibration plate 20 is square, so that the flexible vibration plate 20 can spread the randomly arranged shaft sleeves 200 dropped therein, and effectively prevent the shaft sleeves 200 from overlapping each other; obviously, according to actual needs, the shape of the flexible vibration plate 20 can also be other, so it is not limited to the above. Figure 1 and Figure 2 Limits shown.

[0032] The silo 30 is mounted on the top 111 of the frame 11, and the top 111 of the frame 11 provides support for the silo 30; the silo 30 also allows the sleeve 200 to fall into the flexible vibration plate 20, and the silo 30 is also located on one side of the flexible vibration plate 20 (for example, but not limited to Figure 1 ); Optionally, Figure 1 and Figure 2 As an example, the silo 30 includes an upper silo 31 which is vertically swung and a lower silo 32 which is horizontally placed. The lower silo 32 also partially extends to the corresponding upper part of the flexible vibration plate 20. Therefore, with the help of the horizontally placed lower silo 32, the lower silo 32 acts as a bridge between the upper silo 31 and the flexible vibration plate 20, so that the upper silo 31 and the flexible vibration plate 20 can be staggered, and the silo 30 can be located in the space surrounded by the gantry. Obviously, according to actual needs, the silo 30 can also be other structures, so it is not used as Figure 2 Limits shown.

[0033] The positioning base 40 is assembled on the top 111 of the frame 11, and the frame 11 provides support for the positioning base 40; the positioning base 40 is also located on the other side opposite to the flexible vibration plate 20 (for example but not limited to Figure 1 The positioning base 40 is provided with two positioning pins 41 which are spaced apart from each other and protrude upwards; obviously, the number of the positioning pins 41 can be three, four or five according to actual needs, so it is not limited to Figure 3 and Figure 4 Limits shown.

[0034] The light source plate 50 is located directly above the flexible vibration plate 20 to meet the need that the light source plate 50 irradiates the flexible vibration plate 20 from above the flexible vibration plate 20; an avoidance through hole 51 is opened at the center of the light source plate 50, and optionally, Figure 1 In the example, the avoidance through hole 51 is a circular hole; obviously, according to actual needs, the avoidance through hole 51 can also be an elliptical hole or a regular polygonal hole, so it is not necessary to Figure 1 Limits shown.

[0035] The visual device 60 is arranged in the avoidance hole 51 to ensure that the light source plate 50 provides the visual device 60 with the effect of lighting from the center to the surroundings; the visual device 60 is used to perform visual acquisition of the shaft sleeve 200 spread out by the vibration of the flexible vibration disk 20; optionally, as an example, the visual device 60 is a CCD camera. Obviously, according to actual needs, the visual device 60 can also be a structure well known in the art, so it is not limited to this.

[0036] The XYZ-axis transfer module 70 is assembled on the stand 12, and the stand 12 provides support for the XYZ-axis transfer module 70. Since the structure of the XYZ-axis transfer module 70 is well known in the art, it will not be described in detail here.

[0037] The pick-and-place mechanism 80 is assembled on the XYZ axis transfer module 70 to meet the needs of the XYZ axis transfer module 70 to drive the pick-and-place mechanism 80 to move along the X axis, Y axis and Z axis; the pick-and-place mechanism 80 includes a flip driver 81, a rotation driver 82 and a gripping component 83; the flip driver 81 is used to drive the rotation driver 82 and the gripping component 83 together in the Figure 7 The horizontal position shown is similar to Figure 8 The rotary drive 82 is used to drive the grab assembly 83 around a horizontal center line (see Figure 7 The grab assembly 83 is rotated to change the direction of the sleeve 200 grabbed by the grab assembly 83. That is, when the end of the sleeve 200 where the annular groove 210 is located faces downward, the rotary drive 82 is required to drive the grab assembly 83 to rotate around a horizontal center line (see Figure 7 The center line in the middle) is rotated 180 degrees, so that the end of the sleeve 200 where the annular groove 210 is located is arranged upward, and the state is shown in FIG. Fig.10 shown.

[0038] The controller 90a is electrically connected to the flexible vibration plate 20, the visual device 60, the XYZ axis transfer module 70 and the pick-and-place mechanism 80 respectively. The controller 90a controls the coordinated actions of the XYZ axis transfer module 70 and the pick-and-place mechanism 80 according to the collected information fed back by the visual device 60, so that the pick-and-place mechanism 80, with the cooperation of the XYZ axis transfer module 70, correctly places the shaft sleeve 200 spread out by the flexible vibration plate 20 on the positioning pin 41. The state is shown in FIG. Figure 1 and Figure 3 Specifically, Figure 1 As an example, the sleeve feeder 100 for injection molding of the present invention further includes a reciprocating drive 90b electrically connected to the controller 90a, and the reciprocating drive 90b is respectively arranged on two opposite sides of the flexible vibration plate 20 (for example, but not limited to Figure 1 The left and right sides of the reciprocating drive 90b make the side of the flexible vibration plate 20 where the reciprocating drive 90b is located and the side of the flexible vibration plate 20 where the silo 30 is located adjacent to each other; the positioning base 40 can be slidably disposed on the top 111 of the frame 11, and the positioning base 40 is also assembled and connected with the output end 91 of the reciprocating drive 90b; the positioning base 40 can be driven by the reciprocating drive 90b at least in one discharge position (see Figure 1 The dotted line portion indicated by the middle reference numeral 40) and a material connection position (see Figure 1 The positioning base 40 is close to the flexible vibration plate 20 when it is in the material receiving position, and is away from the flexible vibration plate 20 when it is in the material discharging position; this design allows the manipulator of the injection molding machine to take out the sleeve 200 on the positioning pin 41, leaving more operating space. More specifically, as follows:

[0039] like Figure 3 and Figure 4 As shown in FIG. 1 , as an example, the positioning base 40 includes a base body 40a and an inserting body 40b that can be inserted into the base body 40a from above the base body 40a. The inserting body 40b has a round boss 42 and a plug-in column 43 located below the round boss 42. At this time, the positioning pin 41 is arranged above the round boss 42 and connected to the round boss 42. The round boss 42 also protrudes laterally from the positioning pin 41. The round boss 42 can support the shaft sleeve 200 that is sleeved on the positioning pin 41 from below. The state is shown in FIG. Figure 3 as shown; optionally, Figure 4 As an example, the center lines of the plug column 43, the round boss 42 and the positioning pin 41 coincide with each other to facilitate the processing and manufacturing of the three. Obviously, according to actual needs, the center line relationship of the plug column 43, the round boss 42 and the positioning pin 41 can also be other, so it is not necessary to Figure 4In addition, the base body 40a is provided with a sleeve 44 for the plug-in column 43 to be inserted and matched, and the sleeve 44 is provided with a first through hole 441 that laterally penetrates the sleeve 44, so that the insertion body 40b can be easily assembled and disassembled relative to the base body 40a by means of the cooperation of the plug-in column 43, the sleeve 44 and the first through hole 441. Therefore, the corresponding positioning pin 41 can be replaced according to the different shapes of the sleeve 200, thereby improving the versatility of the sleeve feeder 100 for injection molding of the present invention. Specifically, in Figures 2 to 4 As an example, the plug-in column 43 is provided with a second through hole 431 that laterally penetrates the plug-in column 43 and is aligned with the first through hole 441, so that after the plug-in column 43 is plugged into the sleeve 41, the plug-in column 43 and the sleeve 41 can be fixed by means of a plug-in piece. In addition, the base body 40a is in the shape of a "door" so that the positioning pin 41 is higher than the flexible vibration disk 20, leaving more operating space for the pick-and-place mechanism 80 to place the sleeve 200 in the flexible vibration disk 20 on the positioning pin 41. In addition, Figure 4 As an example, the positioning pin 41 is a stepped shaft that is smaller at the top and larger at the bottom, and a chamfered structure 411 is provided at the upper end of the stepped shaft to improve the smoothness of the sleeve 200 being placed on the positioning pin 41 or being removed from the positioning pin 41.

[0040] like Figure 1 As shown in FIG. 1 , as an example, the reciprocating drive 90 b is a cylinder, so that the positioning base 40 can quickly switch between the material discharging position and the material receiving position; obviously, according to actual needs, the reciprocating drive 90 b can also be a hydraulic cylinder, so it is not necessary to Figure 1 Since the reciprocating drivers 90b are respectively arranged on opposite sides of the flexible vibrator 20 and are assembled and connected with the positioning base 40, the two ends of the positioning base 40 are driven by the corresponding reciprocating drivers 90b, so the reciprocating sliding of the positioning base 40 is more stable and smoother.

[0041] like Figures 6 to 8 As shown, as an example, the flip driver 81 is a telescopic cylinder, so that the rotation driver 82 and the grabbing assembly 83 can quickly switch between the horizontal position and the vertical position; obviously, according to actual needs, the flip driver 81 can also be a telescopic hydraulic cylinder. In addition, the rotation driver 82 is a rotary cylinder, so that the grabbing assembly 83 can quickly rotate and switch between the two extreme positions; obviously, according to actual needs, the rotation driver 82 can also be a rotary hydraulic cylinder. In addition, the grabbing assembly 83 is a pneumatic finger to simplify the structure of the grabbing assembly 83.

[0042] In conjunction with the accompanying drawings, the working process of the injection molding sleeve feeder of the present invention is described:

[0043] A certain amount of the shaft sleeve 200 is added into the material bin 30 , and the shaft sleeve 200 added into the material bin 30 falls into the flexible vibration plate 20 along the material bin 30 .

[0044] The flexible vibration plate 20 spreads out the shaft sleeves 200 by vibrating, thereby preventing the shaft sleeves 200 from overlapping each other.

[0045] The visual device 60 performs visual acquisition of the shaft sleeve 200 spread out by the flexible vibration disk 20, and feeds back the acquired signal to the controller 90a. After the controller 90a processes the visual acquisition, the controller 90a controls the coordinated actions of the XYX-axis transfer module 70 and the pick-and-place mechanism 80, so that the pick-and-place mechanism 80, with the cooperation of the XYZ-axis transfer module 70, correctly places the shaft sleeve 200 spread out by the flexible vibration disk 20 on the positioning pin 41; specifically, in the process of grabbing the shaft sleeve 200 spread out by the flexible vibration disk 20, the flip driver 81 drives the rotation driver 82 and the grab assembly 83 to switch from a horizontal position to a vertical position; and in the process of placing the shaft sleeve 200 on the positioning pin 41, the flip driver 81 drives the rotation driver 82 and the grab assembly 83 to switch from a vertical position to a horizontal position; when the shaft sleeve 200 is in the wrong direction, the rotation driver 82 is also required to drive the grab assembly 83 to rotate together with the shaft sleeve 200 it grabs.

[0046] Therefore, the purpose of automatically and correctly placing the randomly arranged sleeves 200 on the positioning pins 41 is achieved. It is worth noting that the above working steps are only for illustration, so the working process of the sleeve feeder 100 for injection molding of the present invention cannot be limited by the above steps.

[0047] Compared with the prior art, before the pick-and-place mechanism 80 grabs the sleeve 200 in the flexible vibration disk 20, the visual device 60 first performs visual acquisition of the sleeve 200 spread out by the vibration of the flexible vibration disk 20, and feeds back the acquired signal to the controller 90a, which is processed by the controller 90b; after processing, the controller 90a controls the coordinated actions of the XYZ-axis transfer module 70 and the pick-and-place mechanism 80, so that the pick-and-place mechanism 80, with the cooperation of the XYZ-axis transfer module 70, correctly places the sleeve 200 spread out by the flexible vibration disk 20 on the positioning pin 41; thereby ensuring that the sleeve 200 is subsequently embedded in the injection mold in the correct position and orientation. In addition, since the visual device 60 is arranged in the avoidance hole 51 opened at the center of the light source plate 50, the light source plate 50 provides the visual device 60 with a lighting effect evenly distributed from the center to the surroundings, thereby improving the reliability of visual acquisition of the visual device 60; with the help of the pick-and-place mechanism 80 including the flip drive 81, the rotation drive 82 and the grabbing assembly 83, it is effectively ensured that the lying sleeve 200 in the flexible vibration disk 20 is placed upright and correctly oriented on the positioning pin 41.

[0048] The above disclosure is only a preferred embodiment of the present invention, which is to facilitate the understanding and implementation of the present invention by those skilled in the art. It certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A sleeve feeder for injection molding, characterized in that: include: A rack, comprising a frame and a stand protruding upward from the top of the frame; A flexible vibration plate is mounted on the top of the frame; A material bin is assembled on the top of the frame and allows the sleeve to fall into the flexible vibration plate, and the material bin is located beside one side of the flexible vibration plate; A positioning base, mounted on the top of the frame and located on the other side opposite to the flexible vibration plate, wherein the positioning base is provided with a plurality of positioning pins which are separated from each other and protrude upwards; A light source plate is located directly above the flexible vibration plate, and a through hole is provided at the center of the light source plate; A visual device is arranged in the avoidance through hole and performs visual collection of the shaft sleeve spread out by the vibration of the flexible vibration disk; An XYZ axis transfer module is mounted on the stand; A pick-and-place mechanism is mounted on the XYZ-axis transfer module, and the pick-and-place mechanism includes a flip driver, a rotation driver, and a grab assembly. The flip driver is used to drive the rotation driver and the grab assembly to switch between a horizontal position and a vertical position. The rotation driver is used to drive the grab assembly to rotate around a horizontal center line to change the direction of the sleeve grabbed by the grab assembly. as well as The controller is electrically connected to the flexible vibration disk, the visual device, the XYZ-axis transfer module and the pick-and-place mechanism, respectively. The controller controls the coordinated actions of the XYZ-axis transfer module and the pick-and-place mechanism according to the collected information fed back by the visual device, so that the pick-and-place mechanism can correctly place the sleeve spread out by the flexible vibration disk on the positioning pin with the cooperation of the XYZ-axis transfer module.

2. The sleeve feeder for injection molding according to claim 1, characterized in that: It also includes a reciprocating drive electrically connected to the controller, the reciprocating drive is respectively arranged on two opposite sides of the flexible vibration disk, and the side of the flexible vibration disk where the reciprocating drive is located is adjacent to the side of the flexible vibration disk where the silo is located; the positioning base can be slidably reciprocatingly on the top of the frame, and the positioning base is also assembled and connected to the output end of the reciprocating drive. The positioning base can be switched between at least a discharging position and a receiving position under the drive of the reciprocating drive; the positioning base is close to the flexible vibration disk at the receiving position, and the positioning base is far away from the flexible vibration disk at the discharging position.

3. The sleeve feeder for injection molding according to claim 1, characterized in that: The positioning base includes a base body and an insert body that can be inserted into the base body from the top of the base body, the insert body has a circular boss and a plug-in column located below the circular boss, the base body is provided with a sleeve for the plug-in column to be inserted and matched, and the sleeve is provided with a first through hole that laterally penetrates the sleeve; the positioning pin is arranged above the circular boss and connected to the circular boss, and the circular boss also protrudes laterally from the positioning pin.

4. The injection molding sleeve feeder according to claim 3, characterized in that: The plug-in column is provided with a second through hole which laterally penetrates the plug-in column and is aligned with the first through hole; the center lines of the plug-in column, the round boss and the positioning pin coincide with each other.

5. The sleeve feeder for injection molding according to claim 3, characterized in that: The base body is in a "door" shape so that the positioning pin is higher than the flexible vibration plate.

6. The sleeve feeder for injection molding according to claim 3, characterized in that: The reciprocating drive is a pneumatic cylinder or a hydraulic cylinder.

7. The sleeve feeder for injection molding according to claim 1, characterized in that: The vertical frame is a gantry frame, and the silo is also located in the space surrounded by the gantry frame.

8. The injection molding sleeve feeder according to claim 7, characterized in that: The material bin comprises an upper material bin which is vertically swung and a lower material bin which is horizontally placed. The lower material bin also partially extends to the corresponding upper side of the flexible vibration plate. The flexible vibration plate is square in shape.

9. The sleeve feeder for injection molding according to claim 1, characterized in that: The flipping driver is a telescopic air cylinder or a telescopic hydraulic cylinder, the rotating driver is a rotating air cylinder or a rotating hydraulic cylinder, and the grabbing component is a pneumatic finger.

10. The sleeve feeder for injection molding according to claim 1, characterized in that: The positioning pin is a stepped shaft that is smaller at the top and larger at the bottom, and a chamfered structure is provided at the upper end of the stepped shaft.

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