CN218084090U - Can reduce barrel screw rod composite set of fine snap-off of long glass - Google Patents
Can reduce barrel screw rod composite set of fine snap-off of long glass Download PDFInfo
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- CN218084090U CN218084090U CN202122251185.1U CN202122251185U CN218084090U CN 218084090 U CN218084090 U CN 218084090U CN 202122251185 U CN202122251185 U CN 202122251185U CN 218084090 U CN218084090 U CN 218084090U
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Abstract
The utility model provides a can reduce barrel screw rod composite set of fine rupture rate of long glass, including barrel and screw rod, be provided with the feed inlet on barrel one end lateral wall, be provided with the discharge gate on barrel other end terminal surface, the screw rod is by first screw rod, second screw rod and third screw rod concatenation form, the body of rod that the flight section corresponds in first screw rod and second screw rod is the back taper body of rod that is close to discharge end one side body of rod diameter big and is close to feed end one side diameter little, the body of rod diameter of third screw rod keeps unchangeable and the body of rod diameter of third screw rod is the same with the body of rod diameter of second screw rod discharge end, the ratio of flight section length of first screw rod and the flight section length of second screw rod is 1.6 ~ 1.75, the flight section length of second screw rod is greater than the length of third screw rod, be provided with the exhaust hole on the barrel outer wall that corresponds with the feed end of second screw rod. The utility model has the advantages of: the processing and the replacement of the screw rod are convenient; the probability that the long fibers in the material are broken under the action of high pressure continuously is reduced.
Description
Technical Field
The utility model relates to a barrel and screw rod preparation technical field especially indicate a can reduce barrel screw rod composite set of the fine rupture rate of long glass.
Background
The traditional Chinese invention patent application with the application number of CN201410588374.X named as creep-resistant long glass fiber reinforced polypropylene material and a preparation method and application thereof discloses a creep-resistant long glass fiber reinforced polypropylene material and a preparation method and application thereof. The material comprises the following components in percentage by weight: 34 to 78.6 percent of polypropylene; 20 to 50 percent of long glass fiber; 0.1 to 2 percent of nucleating agent; 1 to 8 percent of glass fiber compatilizer; 0.1 to 2 percent of antioxidant; 0.1 to 2 percent of lubricant; 0.1 to 2 percent of odor absorbent. According to the invention, the long glass fiber is used for reinforcement, the alpha-crystal nucleating agent is added to greatly improve the creep resistance of the polypropylene material, the self-designed double-sided melting impregnation equipment is used for production, after the obtained material is subjected to injection molding, the glass fiber is uniformly dispersed in a manufactured part, no fishbone aggregated by the glass fiber is exposed, the performance is more stable and uniform, and the long glass fiber reinforced polypropylene material with outstanding mechanical property and impact resistance is prepared and obtained, and meanwhile, the good creep resistance is ensured. However, when the material is prepared by the preparation method, the phenomena of high breaking rate of long fibers, incapability of meeting the requirements of customers on strength and toughness and the like still exist, so the preparation method needs to be further improved.
Disclosure of Invention
The utility model aims to solve the technical problem that to above-mentioned prior art current situation and provide one kind can apply the extrusion force and the shearing force of change to the material, fully extrude the bubble, can reduce the barrel screw rod composite set of the fine rupture rate of long glass.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: this can reduce barrel screw rod composite set of fine snap rate of long glass includes the barrel and can wear the screw rod of putting in the barrel inner chamber, is provided with the feed inlet on barrel one end lateral wall, is provided with discharge gate, its characterized in that on barrel other end terminal surface: the screw rod is formed by first screw rod, second screw rod and third screw rod concatenation, the body of rod that the screw flight section corresponds in first screw rod and second screw rod is the back taper body of rod that is close to that discharge end one side body of rod diameter is big and is close to that feed end one side diameter is little, the body of rod diameter of third screw rod keeps unchangeable and the body of rod diameter of third screw rod is the same with the body of rod diameter of second screw rod discharge end, the ratio of the screw flight section length of first screw rod and the screw flight section length of second screw rod is 1.6 ~ 1.75, the screw flight section length of second screw rod is greater than the length of third screw rod, be provided with the exhaust hole on the barrel outer wall that corresponds with the feed end of second screw rod.
As an improvement, be provided with first screw hole on the preceding terminal surface of first screw rod the rear end face epirelief of second screw rod is equipped with the connection arch, the bellied surface of connection is provided with connecting thread, the connection arch spiro union is in first screw hole, the preceding terminal surface of first screw rod is in the same place with the rear end face laminating of second screw rod be provided with the second screw hole on the preceding terminal surface of second screw rod the rear end face epirelief of third screw rod is equipped with the second and connects the arch, the bellied surface of second connection is provided with connecting thread, the bellied spiro union of second connection is in the second screw hole, the preceding terminal surface of second screw rod is in the same place with the rear end face laminating of third screw rod.
The further improvement is that the screw edge sections of the first screw and the second screw are both single screw edges, the included angle of the front oblique edge of the axial section of the single screw edge of the first screw is 80 degrees, the included angle of the rear oblique edge of the axial section of any single screw edge is 100 degrees, the included angle of the front oblique edge of the axial section of the single screw edge of the second screw is 80 degrees, and the included angle of the rear oblique edge of the axial section of any single screw edge is 100 degrees.
Further improved, the screw ridge width of the first screw is larger than that of the second screw.
The screw rib section of the first screw comprises a screw rib section, a screw rib section and a screw rib section, wherein the rod body corresponding to the screw rib section is a conical rod body with one end having a large diameter and the other end having a small diameter, the screw rib spacing of the screw rib section is smaller than that of the screw rib section, and the screw rib spacing of the screw rib section is the same as that of the screw rib section.
The screw pitch of the four sections of the screw edges is greater than that of the three sections of the screw edges, and the pitch of the four sections of the screw edges is less than that of the one sections of the screw edges.
The improved structure is characterized in that the spiral edge section of the third screw is double-spiral edge, the double-spiral edge comprises a first spiral edge and a second spiral edge which are arranged at intervals, the starting position of the second spiral edge is connected with the side wall of the first spiral edge, and the height of the axial section of the second spiral edge is lower than that of the axial section of the first spiral edge.
The further improvement is that the back bevel angle of the axial section of the first screw edge is 105 degrees, the back bevel angle of the axial section of the second screw edge is 90 degrees, the front bevel angle of the axial section of the first screw edge is 90 degrees, and the height of the axial section of the first screw edge is 1.3mm higher than that of the axial section of the second screw edge.
As a modification, the feeding port of the cylinder is an opening with asymmetric side wall slopes, the opening is arranged in a clockwise direction on a section along the axial direction of the cylinder and towards the feeding end of the cylinder, the inclination angle of the left side wall of the opening is 40 degrees, and the inclination angle of the right side wall of the opening is 75 degrees.
As an improvement, threaded holes are distributed in the end face of the periphery of a discharge port of the machine barrel, the machine barrel is divided into a machine barrel section and a machine barrel section, the feed port is located in the machine barrel section, the diameter of the machine barrel section is smaller than that of the machine barrel section, positioning holes are distributed in the circumference of the outer wall of the machine barrel section close to the machine barrel section, and limiting holes are distributed in the outer wall of the machine barrel section along the axial direction of the machine barrel.
Compared with the prior art, the utility model has the advantages of: the screw adopts a combined screw, so that the screw is convenient to process and replace; when the material is conveyed forwards, the extrusion force and the shearing force applied to the material are increased firstly and then reduced, and the extrusion force and the shearing force are increased again to the initial position of the second screw rod, so that the variable extrusion force and the variable shearing force can be applied to the material, the long fiber is prevented from being pressed to reach the critical value of breakage, the probability that the long fiber in the material is broken under the action of high pressure continuously is reduced, meanwhile, bubbles in the material can be extruded smoothly, and the material is more uniform, compact and stable.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of the first screw of FIG. 1;
FIG. 3 is a schematic view of the second screw of FIG. 1;
FIG. 4 is a schematic view of the fourth screw of FIG. 1;
FIG. 5 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 7 is an enlarged cross-sectional view of portion I of FIG. 2;
FIG. 8 is a cross-sectional view taken along line C-C of FIG. 4;
FIG. 9 is a cross-sectional view taken along line D-D of FIG. 1;
FIG. 10 is a cross-sectional view taken along line E-E of FIG. 1;
fig. 11 is a side elevational view of the end face of the barrel of fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1 to 11, the barrel and screw assembly capable of reducing the breakage rate of the long glass fiber of the present embodiment includes a barrel 4 and a screw capable of penetrating through an inner cavity of the barrel, a feed port 41 is disposed on a side wall of one end of the barrel 4, a discharge port 42 is disposed on an end surface of the other end of the barrel 4, the screw is formed by splicing a first screw 1, a second screw 2 and a third screw 3, rod bodies corresponding to screw flight segments in the first screw 1 and the second screw 2 are all inverted cone-shaped rod bodies having a larger rod body diameter on a side close to a discharge end and a smaller diameter on a side close to a feed end, a rod body diameter of the third screw 3 is constant, a rod body diameter of the third screw 3 is the same as a rod body diameter on the discharge end of the second screw 2, a ratio of the screw flight segment length of the first screw 1 to the screw flight segment length of the second screw 2 is 1.6 to 1.75, a screw segment length of the second screw 2 is larger than the third screw 3, and a vent hole is disposed on an outer wall of the barrel corresponding to the feed end of the second screw 2.
Be provided with first screw hole 11 on the preceding terminal surface of first screw rod 1, rear end face epirelief at second screw rod 2 is equipped with connection arch 21, the surface of connection arch 21 is provided with connecting thread, connection arch spiro union is in first screw hole 11, the preceding terminal surface of first screw rod 1 is in the same place with the rear end face laminating of second screw rod 2, be provided with the second screw hole on the preceding terminal surface of second screw rod 2, rear end face epirelief at third screw rod 3 is equipped with second connection arch 33, the surface of second connection arch 33 is provided with connecting thread, second connection arch 33 spiro union is in the second screw hole, the preceding terminal surface of second screw rod 2 is in the same place with the rear end face laminating of third screw rod 3.
The screw edge sections of the first screw rod 1 and the second screw rod 2 are both single screw edges, the included angle of the front oblique edge of the axial section of the single screw edge 12 of the first screw rod is 80 degrees, the included angle of the rear oblique edge of the axial section of any single screw edge is 100 degrees, the included angle of the front oblique edge of the axial section of the single screw edge of the second screw rod is 80 degrees, and the included angle of the rear oblique edge of the axial section of any single screw edge is 100 degrees. The screw ridge width of the first screw rod 1 is larger than that of the second screw rod 2.
The screw ridge section of the first screw 1 comprises a screw ridge section A1, a screw ridge section A2 and a screw ridge section A3, the rod body corresponding to the screw ridge section A2 is a conical rod body with one end being large in diameter and the other end being small in diameter, the screw ridge interval of the screw ridge section A3 is smaller than that of the screw ridge section A2, and the screw ridge interval of the screw ridge section A2 and that of the screw ridge section A1 are kept the same.
The screw ridge section of the second screw rod 2 comprises a screw ridge four-section B1, a screw ridge five-section B2 and a screw ridge six-section B3, the rod body corresponding to the screw ridge five-section B2 is a conical rod body with one end being large in diameter and the other end being small in diameter, the screw ridge intervals of the screw ridge four-section B1, the screw ridge five-section B2 and the screw ridge six-section B3 are kept the same, the screw ridge interval of the screw ridge four-section B1 is larger than that of the screw ridge three-section A3, and the screw ridge interval of the screw ridge four-section B1 is smaller than that of the screw ridge one-section A1.
The screw edge section of the third screw rod 3 is double screw edges, the double screw edges comprise first screw edges 31 and second screw edges 32 which are arranged at intervals, the starting position of the second screw edges 32 is connected with the side walls of the first screw edges 31, and the height of the axial cross section of the second screw edges 32 is lower than that of the axial cross section of the first screw edges 31.
The back bevel angle of the axial cross section of the first screw flight 31 is 105 °, the back bevel angle of the axial cross section of the second screw flight 32 is 90 °, the front bevel angle of the axial cross section of the first screw flight 31 is 90 °, and the height of the axial cross section of the first screw flight 31 is 1.3mm higher than the height of the axial cross section of the second screw flight 32.
The feed port 41 of the barrel 4 is an opening having an asymmetric inclination of the side wall, and the opening is arranged clockwise in the cross section in the axial direction of the barrel toward the feed end of the barrel, the inclination angle of the left side wall of the opening is 40 °, and the inclination angle of the right side wall of the opening is 75 °. Threaded holes 43 are distributed on the peripheral end face of a discharge hole 42 of the machine barrel 4, the machine barrel 4 is divided into a machine barrel section and a machine barrel section, a feed port 41 is located on the machine barrel section, the diameter of the machine barrel section is smaller than that of the machine barrel section, positioning holes 44 are distributed on the periphery of the outer wall of the machine barrel section close to the machine barrel section, and limiting holes 45 are distributed on the outer wall of the machine barrel section along the axial direction of the machine barrel 4.
The long glass fiber reinforced plastic product is a new technology which makes a breakthrough in recent years, has higher strength and toughness and greatly improved heat resistance compared with the common short glass fiber reinforced plastic product, is widely applied to the aspects of aerospace, automobiles, sports equipment and the like, and has wide market development prospect. The long glass fiber reinforced plastic products in the market at present generally have the phenomena that the breakage rate of long fibers is high, the strength and the toughness cannot meet the requirements of customers, and the like, and a special barrel screw for reducing the breakage rate of the long glass fibers is developed, the length breakage rate of the long glass fibers is controlled to be below 15%, the strength and the toughness of the products are improved, the requirements of the customers are met, and better economic benefits are brought.
The main technical indexes of the structure are as follows:
1. adjusting and optimizing the current processing technology to ensure that the roughness of the inner hole of the developed machine barrel is less than or equal to Ra0.4, the surface roughness of a working area of the screw is Ra0.2-Ra0.4, and the straightness is less than or equal to 0.03mm/1000mm;
2. the structural design of the machine barrel needs to ensure that the long glass fiber is convenient for blanking and can not slip;
3. the structural design of the screw needs low shearing, and the breaking rate of long fibers needs to be controlled within 15 percent;
4. the forming temperature of the screw rod during working is controlled within the deviation range of 3 ℃ of the set value, and the out-of-tolerance is not allowed.
5. The toughness of the product is 2 times of that of the chopped glass fiber reinforced plastic.
The economic benefits brought by adopting the device are as follows:
1) The breaking rate of long fibers of long glass fiber reinforced plastic products in the market is about 30 percent, the requirements of strength and impact toughness of products of customers cannot be met, the breaking rate of the long fibers of the device can be controlled within 15 percent, the reject ratio of the products is less than 0.5 percent, more precise products can be produced for the customers, and the economic benefit is improved.
2) The core value of the brand of the applicant is increased, the value is created for customers, and the core competitiveness of the company is improved.
Claims (10)
1. The utility model provides a can reduce barrel screw rod composite set of fine snap rate of long glass, includes barrel (4) and can wear to put the screw rod in barrel inner chamber, is provided with feed inlet (41) on barrel (4) one end lateral wall, is provided with discharge gate (42) on barrel (4) other end terminal surface, its characterized in that: the screw rod is formed by first screw rod (1), second screw rod (2) and third screw rod (3) concatenation, the body of rod that the flight section corresponds in first screw rod (1) and second screw rod (2) is the back taper body of rod that is close to discharge end one side body of rod diameter big and is close to that feed end one side diameter is little, the body of rod diameter of third screw rod (3) keeps unchangeable and the body of rod diameter of third screw rod (3) is the same with the body of rod diameter of second screw rod (2) discharge end, the ratio of flight section length of first screw rod (1) and the flight section length of second screw rod (2) is 1.6 ~ 1.75, the flight section length of second screw rod (2) is greater than the length of third screw rod (3), be provided with the exhaust hole on the barrel outer wall that corresponds with the feed end of second screw rod (2).
2. The barrel screw assembly of claim 1, wherein: be provided with first screw hole (11) on the preceding terminal surface of first screw rod (1) the rear end face epirelief of second screw rod (2) is equipped with connection protrusion (21), the surface of connection protrusion (21) is provided with connecting thread, connection protrusion spiro union is in first screw hole (11), the preceding terminal surface of first screw rod (1) is in the same place with the rear end face laminating of second screw rod (2) be provided with the second screw hole on the preceding terminal surface of second screw rod (2) the rear end face epirelief of third screw rod (3) is equipped with second connection protrusion (33), the surface of second connection protrusion (33) is provided with connecting thread, second connection protrusion (33) spiro union is in the second screw hole, the preceding terminal surface of second screw rod (2) is in the same place with the rear end face laminating of third screw rod (3).
3. The barrel screw assembly of claim 2, wherein: the screw edge sections of the first screw (1) and the second screw (2) are both single screw edges, the included angle of the front oblique edge of the axial section of the single screw edge (12) of the first screw is 80 degrees, the included angle of the rear oblique edge of the axial section of any single screw edge is 100 degrees, the included angle of the front oblique edge of the axial section of the single screw edge of the second screw is 80 degrees, and the included angle of the rear oblique edge of the axial section of any single screw edge is 100 degrees.
4. The barrel screw assembly of claim 3, wherein: the screw ridge width of the first screw (1) is larger than that of the second screw (2).
5. The barrel screw assembly of claim 4, wherein: the screw rib section of the first screw (1) comprises a screw rib section (A1), a screw rib section (A2) and a screw rib section (A3), wherein the rod body corresponding to the screw rib section (A2) is a conical rod body with one end being large in diameter and the other end being small in diameter, the screw rib interval of the screw rib section (A3) is smaller than that of the screw rib section (A2), and the screw rib interval of the screw rib section (A2) and that of the screw rib section (A1) are kept the same.
6. The barrel screw assembly of claim 5, wherein: the screw flight section of second screw rod (2) includes screw flight four sections (B1), screw flight five sections (B2) and screw flight six sections (B3), the body of rod that screw flight five sections (B2) correspond is the big toper body of rod that other end diameter is little of one end diameter, the screw flight interval of screw flight four sections (B1), screw flight five sections (B2) and screw flight six sections (B3) keeps the same, the screw flight interval of screw flight four sections (B1) is greater than the screw flight interval of screw flight three sections (A3), the screw flight interval of screw flight four sections (B1) is less than the screw flight interval of screw flight one section (A1).
7. The barrel screw assembly of claim 6, wherein: the spiral shell arris section of third screw rod (3) is two spiral arriss, two spiral arriss are including first spiral arris (31) and second spiral arris (32) that the interval set up, and the starting department of second spiral arris (32) is connected with the lateral wall of first spiral arris (31), and the height of second spiral arris (32) axial cross-section is less than the height of first spiral arris (31) axial cross-section.
8. The barrel screw assembly of claim 7, wherein: the included angle of the rear oblique side of the axial section of the first screw rib (31) is 105 degrees, the included angle of the rear oblique side of the axial section of the second screw rib (32) is 90 degrees, the included angle of the front oblique side of the axial section of the first screw rib (31) is 90 degrees, and the height of the axial section of the first screw rib (31) is 1.3mm higher than that of the axial section of the second screw rib (32).
9. The barrel screw assembly of any one of claims 1 to 8, wherein: the feeding port (41) of the machine barrel (4) is an opening with an asymmetric side wall slope, the opening is arranged in the clockwise direction on a section facing the feeding end of the machine barrel and along the axial direction of the machine barrel, the inclination angle of the left side wall of the opening is 40 degrees, and the inclination angle of the right side wall of the opening is 75 degrees.
10. The barrel screw assembly of any one of claims 1 to 8, wherein: the end face of the periphery of a discharge port (42) of the machine barrel (4) is provided with threaded holes (43), the machine barrel (4) is divided into a first machine barrel section and a second machine barrel section, the feed port (41) is positioned on the first machine barrel section, the diameter of the first machine barrel section is smaller than that of the second machine barrel section, positioning holes (44) are circumferentially distributed on the outer wall of the second machine barrel section close to the first machine barrel section, and limiting holes (45) are distributed on the outer wall of the second machine barrel section along the axial direction of the machine barrel (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122251185.1U CN218084090U (en) | 2021-09-16 | 2021-09-16 | Can reduce barrel screw rod composite set of fine snap-off of long glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122251185.1U CN218084090U (en) | 2021-09-16 | 2021-09-16 | Can reduce barrel screw rod composite set of fine snap-off of long glass |
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| Publication Number | Publication Date |
|---|---|
| CN218084090U true CN218084090U (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122251185.1U Active CN218084090U (en) | 2021-09-16 | 2021-09-16 | Can reduce barrel screw rod composite set of fine snap-off of long glass |
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| CN (1) | CN218084090U (en) |
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2021
- 2021-09-16 CN CN202122251185.1U patent/CN218084090U/en active Active
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