BMC resin processing method

Abstract

The invention relates to a BMC (bulk molding compound) resin processing method, BMC resin is extruded by an extruder, and the extruder is fixed on a bracket; the extruder comprises a raw material mixing part and an extrusion part, the raw material mixing part comprises a mixed material barrel and a feeding channel communicated with the extrusion part, the mixed material barrel comprises a discharging part and a barrel body part which are detachably connected, a stirring rod driven by a driving structure is installed in the barrel body part, and the driving structure comprises a rotatable rotating cover plate installed on the barrel body part. And the stirring rod is mounted and positioned on the rotating cover plate. The barrel body part and the discharging part are detachably connected, so that the barrel body part can be conveniently detached to realize convenient cleaning; the stirring rod is installed on the rotating cover plate, on one hand, the stirring rod is driven to rotate through rotation of the rotating cover plate, on the other hand, the stirring rod can be detached from the rotating cover plate, independent cleaning is easier, and therefore the cleaning and maintaining convenience of the stirring rod, the barrel body part and the discharging part is improved, residual material dirt is reduced, and the follow-up stirring purity is improved.

Description

Technical Field

[0001] This application relates to the technical field of BMC resin processing, and particularly relates to a method for processing BMC resin. Background Art

[0002] BMC refers to bulk molding compound, which is a molding intermediate material for manufacturing glass fiber reinforced thermosetting products by a semi-dry method; it is usually composed of raw materials such as resin, low shrinkage agent, filler, pigment, curing agent, and glass fiber, and has excellent mechanical properties, electrical properties, and chemical resistance; in the existing production of BMC, a stirring device is required to stir the raw materials, and then it is extruded and formed by an extruder.

[0003] In view of the above related technologies, the applicant believes that the existing stirring tanks are often integrally installed. After long-term stirring and processing, scale will remain inside the stirring components, affecting the purity of subsequent stirring. Cleaning or maintenance is also relatively inconvenient, and there is still room for improvement. Summary of the Invention

[0004] In order to improve the convenience of cleaning and maintenance of the stirring components, reduce the remaining scale, and improve the purity of subsequent stirring, this application provides a method for processing BMC resin.

[0005] A method for processing BMC resin provided by this application adopts the following technical solutions:

[0006] A method for processing BMC resin, the BMC resin is extruded by an extruder, and the extruder is fixed on a bracket; the extruder includes a raw material mixing part and an extrusion part, the raw material mixing part includes a mixing material barrel for mixing BMC resin raw materials and a feeding channel communicated with the extrusion part, the mixing material barrel includes a detachable lower feeding part and a barrel body part, the lower feeding part is communicated with the feeding channel, and a stirring rod driven by a driving structure is installed in the barrel body part. The driving structure includes a rotatable rotating cover plate installed on the barrel body part, and the stirring rod is installed and positioned on the rotating cover plate.

[0007] By adopting the above technical solutions, the barrel body part and the lower feeding part are detachably connected, which is convenient to remove the barrel body part for convenient cleaning; the stirring rod is installed on the rotating cover plate. On the one hand, the rotation of the rotating cover plate drives the rotation of the stirring rod, and on the other hand, the stirring rod can be removed from the rotating cover plate, making it easier to clean separately. Thus, the convenience of cleaning and maintenance of the stirring rod, the barrel body part, and the lower feeding part is improved, the remaining scale is reduced, and the purity of subsequent stirring is improved.

[0008] Preferably, the driving structure further includes a driving motor and a driving gear disposed on the bracket on one side of the rotating cover plate. A supporting base is fixed on the bracket, and a moving seat driven by a cylinder to move is movably connected to the supporting base. The driving motor is installed on the moving seat, the driving gear is fixed on the output shaft of the driving motor, and tooth-shaped grooves meshing with the driving gear are circumferentially spaced on the side wall of the rotating cover plate.

[0009] By adopting the above technical solution, the output end of the driving motor of the conventional BMC resin stirring device is directly fixedly connected to the stirring rod. During the stirring process, while the stirring rod stirs the material, the material generates a reverse torque on the stirring rod, and the output end of the driving motor is directly affected by the torque, which is prone to wear and tear under long-term stress; in this application, the driving motor controls the rotation of the driving gear, and then the rotation of the driving gear and the rotating cover plate drives the rotation of the rotating cover plate and the stirring rod indirectly, avoiding the direct torque on the output shaft of the driving motor and resulting in loss, which is beneficial to extending the life of the device; setting the moving seat facilitates the movement of the driving motor, thereby facilitating the disassembly and assembly of the rotating cover plate.

[0010] Preferably, stirring rollers extending obliquely downward are circumferentially and fixedly arranged on the stirring rod, and multiple groups of circumferential stirring rollers are arranged along the extending direction of the stirring rod. Matching rollers extending obliquely and parallel to the stirring rollers are spaced and fixed on the inner side wall of the barrel part.

[0011] By adopting the above technical solution, glass fiber is brittle and has poor wear resistance. The transverse shear force formed by the conventional horizontally rotating stirring rollers is likely to cause damage to the glass fiber, affecting the mixing effect; in this application, by setting the obliquely and parallelly extending stirring rollers and matching rollers, the raw materials in the mixing barrel are mixed in an obliquely moving manner, avoiding the direct transverse shear force from damaging the glass fiber and improving the mixing effect of the raw materials.

[0012] Preferably, the barrel part is provided with installation notches for the corresponding penetration of the stirring rod and the stirring rollers. A cover plate covering the installation notches is fixed on the stirring rod, and the cover plate is annularly received and rotatably connected to the top wall of the barrel part; the stirring rod penetrates through the upper part of the rotating cover plate and extends and is fixed with a positioning plate. A through hole for the positioning plate to pass through is formed through the rotating cover plate, and the positioning plate is fixed to the rotating cover plate at a position where it is misaligned with the through hole by a positioning bolt.

[0013] By adopting the above technical scheme, the installation groove is matched with the stirring rod and the stirring roller, so as to minimize the groove area on the barrel body, and make the stirring rod and the stirring roller convenient to insert into the barrel body; the covering plate covers the installation groove to realize the closure of the barrel body; the through hole is a reserved space for the separation of the rotating cover plate and the stirring rod, and when the positioning plate passes through the through hole, the rotating cover plate can be separated from the stirring rod and removed; in addition, the covering plate is located below the rotating cover plate, so that the positioning of the covering plate and the positioning plate can play a dual stabilizing role in the installation of the stirring rod in the barrel body.

[0014] Preferably, the rotating cover plate is installed on the barrel body through a rotating assembly.

[0015] Preferably, the rotating assembly includes a rotating block and a rotating groove, the rotating blocks are relatively arranged on both sides of the rotating cover plate, the rotating cover plate is provided with a movable groove for the rotating block to move, and the rotating block is connected to the movable groove through a tension spring; the rotating groove is circumferentially opened above the barrel body and is used to accommodate and rotate the rotating block; a push plate is fixed on the rotating block above the rotating cover plate.

[0016] By adopting the above technical solution, the push plate is pushed to extrude the tension spring so that the rotating block can be disengaged from the rotating groove. At this time, the rotating cover plate can be removed from the barrel body, which is convenient for operation. When the rotating block is positioned in the rotating groove, the circumferential rotating groove can provide a circumferential rotating space for the rotating block, and the cooperation of the rotating block and the rotating groove plays a guiding role, so that the rotation process of the rotating cover plate is more stable.

[0017] Preferably, the lower part of the material discharging portion is conical; and the barrel body is mounted on the material discharging portion via a mounting structure.

[0018] Preferably, the mounting structure includes a mounting plate, a plug-in sleeve and a plug-in rod. The mounting plate extends in a ring shape and abuts against the inner wall of the unloading part. A sealing ring is fixed on the side wall of the mounting plate opposite to the inner wall of the unloading part. The plug-in rod is fixed on the outer wall of the unloading part, and the plug-in sleeve is fixed to the outer wall of the barrel body and is connected to the plug-in rod. The plug-in sleeve and the plug-in rod are fixed by fixing bolts.

[0019] By adopting the above technical solution, the mounting plate and the sealing ring realize the connection and sealing of the inner wall of the barrel body and the discharge part; the plug-in sleeve and the plug-in rod are plugged into each other and fixed with fixing bolts to realize the fixation of the barrel body and the outside of the discharge part, which makes disassembly and assembly more convenient.

[0020] Preferably, the extrusion part comprises a screw mechanism for extruding the BMC resin and a driving unit, the driving unit is fixed to one end of the bracket and drives the screw mechanism to rotate, and the feed channel is connected to the screw mechanism.

[0021] By adopting the above technical solution, the screw mechanism rotates under the drive of the driving unit, and the BMC resin extends along the axial direction of the screw mechanism to be discharged and extruded.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The barrel body and the discharge part are detachably connected, so that the barrel body can be removed for convenient cleaning; the stirring rod is installed on the rotating cover plate. On the one hand, the rotation of the rotating cover plate drives the stirring rod to rotate, and on the other hand, the stirring rod can be removed from the rotating cover plate, which is easier to clean separately, thereby improving the convenience of cleaning and maintenance of the stirring rod, barrel body and discharge part, reducing residual material scale, and improving the purity of subsequent stirring;

[0024] 2. The output end of the driving motor of the conventional BMC resin stirring device is directly fixedly connected to the stirring rod. During the stirring process, the stirring rod stirs the material, and the material generates a reverse torque on the stirring rod. The output end of the driving motor is directly affected by the torque, which is easy to cause loss under long-term stress. The present application controls the rotation of the driving gear through the driving motor, and then indirectly drives the rotation of the rotating cover plate and the stirring rod through the meshing of the driving gear and the rotating cover plate, thereby avoiding the output shaft of the driving motor from being directly subjected to the torque and causing loss, which is beneficial to prolonging the life of the device. The movable seat is provided to facilitate the movement of the driving motor, thereby facilitating the disassembly and assembly of the rotating cover plate.

[0025] 3. Glass fiber is brittle and has poor wear resistance. The lateral shear force generated by the conventional horizontally rotating stirring roller can easily damage the glass fiber, affecting the mixing effect. The present application provides inclined and parallel stirring rollers and matching rollers to mix the raw materials in the mixing barrel in an oblique motion, thereby avoiding direct lateral shear force from damaging the glass fiber and improving the mixing effect of the raw materials.

[0026] 4. The installation slot is matched with the stirring rod and the stirring roller to minimize the slot area on the barrel body, and the stirring rod and the stirring roller can be easily inserted into the barrel body; the covering plate covers the installation slot to achieve the closure of the barrel body; the through hole is a reserved space for the separation of the rotating cover plate and the stirring rod, and when the positioning plate passes through the through hole, the rotating cover plate can be separated from the stirring rod and removed; in addition, the covering plate is located below the rotating cover plate, so that the stirring rod can be installed in the barrel body through the positioning of the covering plate and the positioning plate. Double stabilization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0028] Figure 2 is a schematic diagram of a partial cross-sectional structure of an extrusion portion of an embodiment of the present application;

[0029] Figure 3 It is a schematic diagram of a partial cross-sectional structure of the connection between the barrel body and the feeding portion of an embodiment of the present application;

[0030] Figure 4 It is a schematic diagram of a partial sectional structure inside the barrel part of an embodiment of the present application, aiming to show the structure of the cooperation between the stirring roller and the matching roller;

[0031] Figure 5 It is a schematic diagram of a partial exploded structure of the cooperation between the rotating cover plate, the stirring rod and the barrel part of an embodiment of the present application;

[0032] Figure 6 It is a schematic diagram of a partial sectional structure highlighting that the rotating cover plate of an embodiment of the present application is rotatably connected to the barrel part;

[0033] Figure 7 It is a schematic diagram of a partial sectional structure highlighting that the moving seat of an embodiment of the present application is installed inside the support base.

[0034] Explanation of reference numerals: 1. Extruder; 2. Raw material mixing part; 21. Mixing material barrel; 221. Feeding part; 222. Barrel part; 22. Feeding channel; 3. Extrusion part; 31. Screw mechanism; 32. Driving unit; 4. Bracket; 41. Support base; 411. Moving groove; 5. Installation structure; 51. Installation plate; 511. Sealing ring; 52. Insertion sleeve; 53. Insertion rod; 6. Fixed bolt; 7. Stirring rod; 71. Stirring roller; 72. Cover plate; 8. Matching roller; 9. Installation notch; 10. Driving structure; 101. Rotating cover plate; 102. Driving motor; 103. Driving gear; 11. Positioning plate; 111. Positioning bolt; 12. Rotating assembly; 121. Rotating block; 122. Rotating groove; 13. Tensile spring; 14. Push plate; 15. Moving seat; 151. Moving block; 16. Through hole. Detailed implementation manners

[0035] The following further elaborates on the present application in conjunction with the accompanying drawings.

[0036] An embodiment of the present application discloses a BMC resin processing method. Referring to Figure 1 , the BMC resin is extruded by the extruder 1, and the extruder 1 is fixed on the bracket 4; the extruder 1 includes a raw material mixing part 2 and an extrusion part 3. The raw material mixing part 2 includes a mixing material barrel 21 for mixing BMC resin raw materials and a feeding channel 22 communicated with the extrusion part 3. The raw materials mixed by the raw material mixing part 2 enter the extruder 1 through the feeding channel 22 for extrusion.

[0037] Referring to Figure 1 , 2, the extrusion part 3 includes a screw mechanism 31 for extruding BMC resin and a driving unit 32. A fixed motor is provided inside the driving unit 32, and the driving unit 32 is fixed to one end of the bracket 4 and drives the screw mechanism 31 to rotate. The feeding channel 22 communicates with the screw mechanism 31; under the drive of the driving unit 32, the screw mechanism 31 rotates, and the BMC resin is discharged along the axial direction of the screw mechanism 31 for extrusion.

[0038] Refer to Figure 1 , 3 , the mixing material barrel 21 includes a feeding part 221 and a barrel body part 222 that are detachably connected through an installation structure 5. The lower part of the feeding part 221 is conical, and the feeding part 221 communicates with the feeding channel 22; the installation structure 5 includes an installation plate 51. The installation plate 51 extends in a ring shape and abuts against the inner side wall of the feeding part 221. A sealing ring 511 is fixed on the side wall of the installation plate 51 opposite to the inner wall of the feeding part 221. The installation plate 51 and the sealing ring 511 realize the connection and sealing of the inner side walls of the barrel body part 222 and the feeding part 221.

[0039] Refer to Figure 1 , 3 , the installation structure 5 further includes a socket 52 and a plug rod 53. The plug rod 53 is fixed on the outer side wall of the feeding part 221, and the socket 52 is fixed on the outer side wall of the barrel body part 222 and is for the plug rod 53 to be inserted. The socket 52 and the plug rod 53 are fixed by a fixing bolt 6, realizing the fixation of the outer parts of the barrel body part 222 and the feeding part 221, and the disassembly and assembly are more convenient.

[0040] Refer to Figure 3 , 4 , a stirring rod 7 is installed in the barrel body part 222. Stirring rollers 71 that extend obliquely downward are circumferentially and spacedly fixed on the stirring rod 7, and multiple groups of circumferential stirring rollers 71 are arranged along the extending direction of the stirring rod 7; parallel to the stirring rollers 71, matching rollers 8 that extend obliquely are spacedly fixed on the inner side wall of the barrel body part 222; glass fiber is brittle and has poor wear resistance. The transverse shear force formed by the conventionally horizontally and transversely rotating stirring rollers 71 is likely to cause damage to the glass fiber, affecting the mixing use effect; in this application, by setting the obliquely and parallelly extending stirring rollers 71 and the matching rollers 8, the raw materials in the mixing material barrel 21 are mixed in an obliquely moving manner, avoiding direct transverse shear force from damaging the glass fiber and improving the mixing effect of the raw materials.

[0041] Refer to Figure 4 , 5The barrel body 222 is provided with an installation slot 9 for the stirring rod 7 and the stirring roller 71 to pass through respectively, and a covering plate 72 covering the installation slot 9 is fixed on the stirring rod 7. The installation slot 9 minimizes the slot area on the barrel body 222 as much as possible, and allows the stirring rod 7 and the stirring roller 71 to be easily inserted into the barrel body 222. The covering plate 72 covers the installation slot 9, thereby realizing the closure of the barrel body 222; the covering plate 72 is annularly accommodated and rotatably connected to the top wall of the barrel body 222. When the stirring rod 7 rotates, the covering plate 72 cooperates to rotate at the top of the barrel body 222, and the structures do not affect each other.

[0042] Reference Figure 1 , 6 The stirring rod 7 is driven by a driving structure 10 , and the driving structure 10 includes a rotating cover plate 101 installed on the barrel body 222 through a rotating assembly 12 .

[0043] Reference Figure 5 , 6 The rotating assembly 12 includes a rotating block 121 and a rotating groove 122. The rotating blocks 121 are relatively arranged on both sides of the rotating cover 101 and are L-shaped. The rotating cover 101 is provided with a movable groove for the rotating block 121 to move. The rotating block 121 is connected to the movable groove through a tension spring 13; the rotating groove 122 is circumferentially opened above the barrel body 222 and is used for the rotating block 121 to accommodate and rotate.

[0044] Reference Figure 5 , 6 A push plate 14 is fixed on the rotating block 121 above the rotating cover 101; pushing the push plate 14 to squeeze the tension spring 13 can make the rotating block 121 escape from the rotating groove 122, and the rotating cover 101 can be removed from the barrel body 222 at this time, which is convenient for operation; and when the rotating block 121 is positioned in the rotating groove 122, the circumferential rotating groove 122 can provide a circumferential rotating space for the rotating block 121, and the cooperation of the rotating block 121 and the rotating groove 122 plays a guiding role, so that the rotation process of the rotating cover 101 is more stable.

[0045] Reference Figure 5 The stirring rod 7 is installed and positioned on the rotating cover plate 101. The stirring rod 7 is penetrated through the upper part of the rotating cover plate 101 and a positioning plate 11 is extended and fixed thereon. A through hole 16 is provided on the rotating cover plate 101 for the positioning plate 11 to penetrate. The positioning plate 11 is fixed to the rotating cover plate 101 at a position misaligned with the through hole 16 by a positioning bolt 111; the through hole 16 is a reserved space for the separation of the rotating cover plate 101 and the stirring rod 7. When the positioning plate 11 passes through the through hole 16, the rotating cover plate 101 can be separated from the stirring rod 7 and removed; through the positioning of the covering plate 72 and the positioning plate 11, a dual stabilizing effect is played on the installation of the stirring rod 7 in the barrel body 222; the rotation of the rotating cover plate 101 can drive the stirring rod 7 to rotate synchronously.

[0046] Reference Figure 1 、 2 2

[0047] Reference Figure 1 、 7 7

[0048]

[0048]

[0049]

[0049]

[0050] Finally, unscrew the fixing bolt 6 to separate the barrel part 222 from the blanking part 221, so that the barrel part 222 and the blanking part 221 can be conveniently cleaned, thereby improving the convenience of cleaning and maintaining the stirring rod 7, the barrel part 222 and the blanking part 221, reducing the residual scale, and improving the subsequent stirring purity.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A method for processing BMC resin, characterized in that: The BMC resin is extruded by an extruder (1), and the extruder (1) is fixed on a bracket (4); the extruder (1) includes a raw material mixing part (2) and an extrusion part (3), the raw material mixing part (2) includes a mixing material barrel (21) for mixing BMC resin raw materials and a feeding channel (22) communicated with the extrusion part (3), the mixing material barrel (21) includes a blanking part (221) and a barrel body part (222) which are detachably connected, the blanking part (221) is communicated with the feeding channel (22), a stirring rod (7) driven by a driving structure (10) is installed in the barrel body part (222), the driving structure (10) includes a rotatable rotating cover plate (101) installed on the barrel body part (222), and the stirring rod (7) is installed and positioned on the rotating cover plate (101).

2. The BMC resin processing method according to claim 1, characterized in that: The driving structure (10) further includes a driving motor (102) and a driving gear (103) which are arranged on the bracket (4) on one side of the rotating cover plate (101), a support base (41) is fixed on the bracket (4), a moving seat (15) driven by a cylinder to move is movably connected on the support base (41), the driving motor (102) is installed on the moving seat (15), the driving gear (103) is fixed on the output shaft of the driving motor (102), and tooth-shaped grooves meshed with the driving gear (103) are circumferentially spaced on the side wall of the rotating cover plate (101).

3. A method for processing BMC resin according to claim 1, characterized in that: Stirring rollers (71) which extend obliquely downward are circumferentially and spacedly fixed on the stirring rod (7), and multiple groups of circumferential stirring rollers (71) are arranged along the extending direction of the stirring rod (7), and matching rollers (8) which extend obliquely and are parallel to the stirring rollers (71) are spacedly fixed on the inner side wall of the barrel body part (222).

4. A method for processing BMC resin according to claim 3, characterized in that: An installation notch (9) for the stirring rod (7) and the stirring rollers (71) to correspondingly pass through is formed in the barrel body part (222), a covering plate (72) covering the installation notch (9) is fixed on the stirring rod (7), and the covering plate (72) is annularly accommodated and rotatably connected in the top wall of the barrel body part (222); a positioning plate (11) is fixedly extended through the upper part of the rotating cover plate (101) on the stirring rod (7), a through hole (16) through which the positioning plate (11) can pass through is formed through the rotating cover plate (101), and the positioning plate (11) is fixed on the rotating cover plate (101) at a position where it is offset from the through hole (16) through a positioning bolt (111).

5. A method for processing BMC resin according to claim 1, characterized in that: The rotating cover plate (101) is installed on the barrel body part (222) through a rotating assembly (12).

6. The method for processing BMC resin according to claim 5, characterized in that: The rotating assembly (12) includes a rotating block (121) and a rotating groove (122), the rotating blocks (121) are oppositely arranged on both sides of the rotating cover plate (101), an activity groove for the rotating block (121) to move is formed in the rotating cover plate (101), and the rotating block (121) is connected in the activity groove through a tension spring (13); the rotating groove (122) is circumferentially formed above the barrel body part (222) and for the rotating block (121) to be accommodated and rotate; a push plate (14) is fixed above the rotating cover plate (101) on the rotating block (121).

7. A method for processing BMC resin according to claim 1, characterized in that: The lower part of the blanking section (221) is conical; the barrel body section (222) is installed on the blanking section (221) through the installation structure (5).

8. A method for processing BMC resin according to claim 7, characterized in that: The installation structure (5) includes an installation plate (51), a plug-in sleeve (52) and a plug-in rod (53). The installation plate (51) extends annularly and abuts against the inner side wall of the blanking section (221). A sealing ring (511) is fixed on the side wall of the installation plate (51) opposite to the inner wall of the blanking section (221); the plug-in rod (53) is fixed on the outer side wall of the blanking section (221), the plug-in sleeve (52) is fixed on the outer side wall of the barrel body section (222) and is for the plug-in rod (53) to be inserted, and the plug-in sleeve (52) and the plug-in rod (53) are fixed by a fixing bolt (6).

9. A method for processing BMC resin according to claim 1, characterized in that: The extrusion section (3) includes a screw mechanism (31) for extruding BMC resin and a driving unit (32). The driving unit (32) is fixed at one end of the bracket (4) and drives the screw mechanism (31) to rotate. The feeding channel (22) communicates with the screw mechanism (31).

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