CN211221954U - Online back co-extrusion die for soft and hard composite sealing rubber strips - Google Patents
Online back co-extrusion die for soft and hard composite sealing rubber strips Download PDFInfo
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- CN211221954U CN211221954U CN201922033517.1U CN201922033517U CN211221954U CN 211221954 U CN211221954 U CN 211221954U CN 201922033517 U CN201922033517 U CN 201922033517U CN 211221954 U CN211221954 U CN 211221954U
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Abstract
A soft and hard composite sealing rubber strip online post co-extrusion die comprises a bottom plate, an introduction plate, a co-extrusion plate A, a co-extrusion plate B and a composite plate, wherein the bottom plate is horizontally arranged, the introduction plate is transversely and vertically arranged at the rear part above the bottom plate, the co-extrusion plate A is arranged at the front part of the introduction plate above the bottom plate, the co-extrusion plate B is arranged at the front part of the co-extrusion plate A above the bottom plate, and the composite plate is arranged at the front part of the co-extrusion plate B above; the on-line post co-extrusion die for the soft and hard composite sealing rubber strips extrudes and fuses materials with different hardness extruded by two extruders into a novel composite rubber strip through innovative structural design, and the composite rubber strip is directly cooled and molded into a section bar sealant groove, so that the comprehensive performance of the rubber strip is obviously improved, the manual adhesive strip threading procedure of a door and window assembly factory is omitted, the time and labor are saved, the energy is saved, the consumption is reduced, and the development concept and policy requirements of national low carbon, green and environment protection are met.
Description
Technical Field
The utility model belongs to the mould field mainly relates to a crowded mould is crowded altogether in online back of compound joint strip of hardness.
Background
The eleven-five plan of China puts forward requirements on energy conservation and emission reduction, the building energy conservation is not slow, and one of the most important links of the building energy conservation is the energy conservation of building doors and windows. In order to effectively prevent the heat transfer between the indoor and the outdoor, adhesive tapes are adopted for sealing between the glass and the profiles of the window and between the sash profile and the frame profile of the window, so as to prevent the phenomena of air leakage and water leakage. At the initial stage, adhesive tape and section bar are separately produced, and door and window assembly factory purchases respectively and arranges a process alone after returning, lets the workman be used for the fixed position of adhesive tape to wear to the notch that corresponds on the section bar in, reentrant next process equipment. This prolongs assembly time and increases labor cost. In order to improve the production efficiency, more and more section bar production enterprises are required to co-extrude the sealing rubber strips on the section bars on line to form a whole, so that the process of manually penetrating the rubber strips is omitted, the production efficiency is improved, and the labor cost is saved. The adhesive tape is embedded in the notch of the door and window profile, so that the normal use function is ensured, the profile can be drawn out in the future when being recycled, and the classification and recycling of different materials are facilitated; at present, the adhesive tape is an online back co-extrusion die, and the whole co-extruded adhesive tape is a material. In order to seal glass and profiles well, the material also needs to ensure that the glass cannot be crushed during installation, so that the hardness is not high, and the part in the groove opening is easy to pull out from the adhesive tape groove opening of the door and window profile under the action of external force, so that the sealing failure is caused; therefore, a novel mold is needed to solve the problem that the sealing rubber strip extruded by the existing post-coextrusion-molding mold is easy to pull out from the groove opening of the door/window profile due to low hardness when external force is applied.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a crowded mould is crowded altogether after soft or hard composite sealing adhesive tape is online for solve the problem that the joint strip that crowded mould was extruded altogether behind the current adhesive tape is because hardness is low to be followed door and window section bar notch pull-out easily when receiving external force.
The purpose of the utility model can be realized by adopting the following technical scheme: a soft and hard composite sealing rubber strip online post co-extrusion die comprises a bottom plate, an introduction plate, a co-extrusion plate A, a co-extrusion plate B and a composite plate, wherein the bottom plate is horizontally arranged, the introduction plate is transversely and vertically arranged at the rear part above the bottom plate, the co-extrusion plate A is arranged at the front part of the introduction plate above the bottom plate, the co-extrusion plate B is arranged at the front part of the co-extrusion plate A above the bottom plate, and the composite plate is arranged at the front part of the co-extrusion plate B above; the bottom plate is a rectangular flat plate, inwards concave longitudinal fixing grooves are symmetrically formed in two sides of the upper surface of the bottom plate, and pressing blocks are arranged on the outer sides of the fixing grooves in the two sides.
The guide plate is of a concave-shaped flat plate structure, a rectangular guide groove is formed in the middle of the upper surface of the guide plate, rectangular isolation blocks are symmetrically arranged on the groove bottom surface of the guide groove in a bilateral mode, T-shaped section guide ribs are arranged on the groove bottom surfaces of two sides of each isolation block, bolt counter bores are formed in the back surface of the guide plate, bolt holes are formed in two sides of the rear portion of the guide plate, a feeding hole A is formed in the middle of the right side of the front surface of the guide plate, a transverse raw material input hole A is formed in the middle of the right side of the guide plate, the raw material input hole A is communicated with the feeding hole A, an inwards concave compression groove A is formed in the lower portion of the left side of the guide plate, the compression groove A corresponds to and compresses tightly the left compression block on the bottom plate, rectangular support blocks are symmetrically arranged at the left end and.
The appearance structure and the size of the co-extrusion plate A are consistent with those of the guide-in plate, a fixed threaded through hole is arranged on the front face of the co-extrusion plate A, the rear part of the fixed threaded through hole corresponds to a bolt counter bore on the rear side guide-in plate and is connected with the guide-in plate on the rear side through a bolt, a flow channel through hole A which is through from front to back is arranged at the lower part of each profile guide rib on the upper part of the front face of the co-extrusion plate A, a flow channel A is arranged between the fixed threaded through holes on the rear face of the co-extrusion plate A, the upper part of the flow channel A forms a double Y-shaped shunting structure, the upper branches of the flow channel A are respectively communicated with the flow channel through; a feeding hole B is formed in the middle of the left side of the front of the co-extrusion plate A, a transverse raw material input hole B is formed in the middle of the left side of the co-extrusion plate A, and the raw material input hole B is communicated with the feeding hole B; and the lower supporting block of the co-extrusion plate A is correspondingly arranged with the fixed groove on the bottom plate.
The appearance structure and the size of the co-extrusion plate B are consistent with those of the co-extrusion plate A, a bolt counter bore is arranged in front of the co-extrusion plate B, the bolt counter bore is correspondingly connected with the front part of the fixed thread through hole on the co-extrusion plate A at the rear side through a bolt, and threaded holes are formed in the two sides and the upper part of the front lower part of the co-extrusion plate B; the lower parts of the profile guide ribs on the upper part in front of the co-extrusion plate B are provided with L-shaped flow channel through holes B, the rear parts of the flow channel through holes B correspond to and are communicated with the flow channel through holes A on the front of the co-extrusion plate A, and the upper ends of the flow channel through holes B are arranged in the profile guide ribs; two sides of the lower part of the flow passage through hole B in front of the co-extrusion plate B are provided with flow passage through holes C with equidirectional inclined long hole-shaped structures; a runner B is arranged between bolt counter bores at the back of the co-extrusion plate B, the structure of the runner B is the same as that of the runner A, the upper end of the runner B is communicated with a runner through hole C, and the left end of the runner B corresponds to and is communicated with the position of a feeding hole B in front of the co-extrusion plate A; a lower supporting block of the co-extrusion plate B is correspondingly arranged with a fixed groove on the bottom plate, the lower part of the right side surface of the co-extrusion plate B is provided with an inwards concave pressing groove B, and the pressing groove B corresponds to and is pressed with a right pressing block on the bottom plate; threaded holes are formed in two sides of the upper surface of the co-extrusion plate B.
The upper structure and the size of the composite plate are consistent with the appearance and the size of the co-extruded plate B, the lower surface of the composite plate is flush with each other, the lower surface of the composite plate is higher than the lower surface of the co-extruded plate B, bolt counter bores are formed in the front surface of the composite plate, threaded holes are formed in two sides of the front surface of the composite plate, and the bolt counter bores correspond to the front fixed threaded holes of the co-extruded plate B in position and are connected with the co-; the lower part of the profile guiding rib at the upper part of the composite board is provided with a rubber strip confluence through groove; the upper part of the adhesive tape confluence through groove is of an inverted 'n' -shaped structure, the lower part of the adhesive tape confluence through groove is of an inclined door-shaped structure, the upper part of the rear end of the adhesive tape confluence through groove is correspondingly communicated with the upper runner through hole B of the co-extrusion plate B, and the lower part of the rear end of the adhesive tape confluence through groove is correspondingly communicated with the lower runner through hole C of the co-extrusion plate B.
The thickness of the co-extrusion plate A is smaller than that of the lead-in plate, the thickness of the co-extrusion plate B is smaller than that of the co-extrusion plate A, and the thickness of the composite plate is smaller than that of the co-extrusion plate B.
The on-line post co-extrusion die for the soft and hard composite sealing rubber strips extrudes and fuses materials with different hardness extruded by two extruders into a novel composite rubber strip through innovative structural design, and the composite rubber strip is directly cooled and molded into a section bar sealant groove, so that the comprehensive performance of the rubber strip is obviously improved, the manual adhesive strip threading procedure of a door and window assembly factory is omitted, the time and labor are saved, the energy is saved, the consumption is reduced, and the development concept and policy requirements of national low carbon, green and environment protection are met.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a left side view of fig. 1.
Fig. 4 is a schematic structural view of the introducing plate of fig. 2.
Fig. 5 is a schematic structural view of the extruded sheet a in fig. 2.
Fig. 6 is a schematic structural view of the extruded sheet B in fig. 2.
Fig. 7 is a schematic structural view of the composite plate of fig. 2.
In the figure: 1. the device comprises a base plate, 2, a composite plate, 3, a profile pressing frame, 4, a profile, 5, co-extrusion plates B, 6, co-extrusion plates A, 7, a guide plate, 2-1, an adhesive tape confluence through groove, 5-1, runner through holes B, 5-2, runner through holes C, 5-3, pressing grooves B, 5-4, runner B, 6-1, runner A, 6-2, runner through holes A, 6-3, feed holes B, 6-4, raw material input holes B, 7-1, a separation block, 7-2, guide ribs, 7-3, pressing grooves A, 7-4, a support block, 7-5, feed holes A, 7-6 and raw material input holes A.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, the online back co-extrusion die for the soft and hard composite sealing rubber strip comprises a bottom plate 1, a lead-in plate 7, a co-extrusion plate A6, a co-extrusion plate B5 and a composite plate 2, wherein the bottom plate 1 is horizontally arranged, the lead-in plate 7 is transversely and vertically arranged at the back part of the upper surface of the bottom plate 1, the co-extrusion plate A6 is arranged at the front part of the lead-in plate 7 above the bottom plate 1, the co-extrusion plate B5 is arranged at the front part of the co-extrusion plate A6 above the bottom plate 1, and the composite plate 2 is arranged at the front part; the bottom plate 1 is a rectangular flat plate, concave longitudinal fixing grooves are symmetrically formed in two sides of the upper surface of the bottom plate 1, and pressing blocks are arranged on the outer sides of the fixing grooves in the two sides;
as shown in FIG. 4, the leading-in plate 7 is a concave-shaped flat plate structure, a rectangular guide groove is arranged in the middle of the upper surface of the leading-in plate 7, rectangular isolation blocks 7-1 are symmetrically arranged on the left and right sides of the groove bottom surface of the guide groove, T-shaped profile guide ribs 7-2 are arranged on the groove bottom surfaces of the two sides of the isolation block 7-1, bolt counter bores are arranged on the rear surface of the leading-in plate 7, bolt holes are arranged on the two sides of the rear portion of the leading-in plate 7, a feed hole A7-5 is arranged in the middle of the right side of the front surface of the leading-in plate 7, a transverse raw material input hole A7-6 is arranged in the middle of the right side of the leading-in plate 7, the raw material input hole A7-6 is communicated with the feed hole A7-5, a concave pressing groove A7-3 is arranged on the lower, rectangular supporting blocks 7-4 are symmetrically arranged at the left end and the right end below the guide plate 7, and the supporting blocks 7-4 are correspondingly arranged with the fixing grooves on the bottom plate 1;
as shown in fig. 5, the shape structure and size of the co-extrusion plate A6 are consistent with those of the lead-in plate 7, a fixed thread through hole is arranged on the front of the co-extrusion plate A6, the rear part of the fixed thread through hole corresponds to a bolt counter bore on the lead-in plate 7 at the rear side and is connected with the lead-in plate 7 at the rear side through a bolt, a flow passage through hole A6-2 which is through from front to back is arranged at the lower part of each profile guide rib at the upper part of the front of the co-extrusion plate A6, a flow passage A6-1 is arranged between the fixed thread through holes at the rear of the co-extrusion plate A6, the upper part of the flow passage A6-1 is of a double-Y-shaped shunting structure, the upper branch of the flow passage A6-1 is correspondingly communicated with the flow passage through hole A6-; a feeding hole B6-3 is formed in the middle of the left side of the front of the co-extrusion plate A6, a transverse raw material input hole B6-4 is formed in the middle of the left side of the co-extrusion plate A6, and the raw material input hole B6-4 is communicated with the feeding hole B6-3; the lower supporting block of the co-extrusion plate A6 is correspondingly arranged with the fixed groove on the bottom plate 1;
as shown in fig. 6, the appearance structure and the size of the co-extruded plate B5 are the same as those of the co-extruded plate A6, a bolt counter bore is arranged in front of the co-extruded plate B5, the bolt counter bore is correspondingly connected with the front part of the fixed thread through hole on the co-extruded plate A6 at the rear side through a bolt, and threaded holes are arranged on the two sides and the upper part of the front lower part of the co-extruded plate B5; the lower parts of the profile guide ribs on the upper part in front of the co-extrusion plate B5 are provided with L-shaped flow passage through holes B5-1, the rear parts of the flow passage through holes B5-1 correspond to and are communicated with the flow passage through holes A6-2 in front of the co-extrusion plate A6, and the upper ends of the flow passage through holes B5-1 are arranged in the profile guide ribs; two sides of the lower part of the flow passage through hole B5-1 in front of the co-extrusion plate B5 are provided with flow passage through holes C5-2 with equidirectional inclined long hole-shaped structures; a runner B5-4 is arranged between bolt counter bores at the back of the co-extrusion plate B5, the structure of the runner B5-4 is the same as that of the runner A6-1, the upper end of the runner B5-4 is communicated with a runner through hole C5-2, and the left end of the runner B5-4 corresponds to and is communicated with the position of a feeding hole B6-3 in front of the co-extrusion plate A6; a supporting block at the lower part of the co-extrusion plate B5 is correspondingly arranged with a fixed groove on the bottom plate 1, a concave compaction groove B5-3 is arranged at the lower part of the right side surface of the co-extrusion plate B5, and the compaction groove B5-3 corresponds to and compacts the right compaction block on the bottom plate 1; threaded holes are formed in two sides of the upper surface of the co-extrusion plate B5;
as shown in fig. 7, the upper structure and size of the composite board 2 are consistent with the shape and size of the co-extruded board B5, the lower surface is flush with the lower surface, the lower surface is higher than the lower surface of the co-extruded board B5, the front surface of the composite board 2 is provided with bolt counter bores, the two sides of the front surface of the composite board 2 are provided with threaded holes, and the bolt counter bores correspond to the front fixed threaded holes of the co-extruded board B5 in position and are connected with the co-extruded board; the lower part of the profile guiding rib at the upper part of the composite board 2 is provided with a rubber strip confluence through groove 2-1; the upper part of the adhesive tape confluence through groove 2-1 is in an inverted 'V' -shaped structure, the lower part of the adhesive tape confluence through groove 2-1 is in an inclined door-shaped structure, the upper part of the rear end of the adhesive tape confluence through groove 2-1 is correspondingly communicated with the upper runner through hole B5-1 of the co-extrusion plate B5, and the lower part of the rear end of the adhesive tape confluence through groove 2-1 is correspondingly communicated with the lower runner through hole C5-2 of the co-extrusion plate B5;
the thickness of the coextruded sheet A6 shown in fig. 2 is less than the thickness of the intake sheet 7, the thickness of the coextruded sheet B5 is less than the thickness of the coextruded sheet A6, and the thickness of the composite sheet 2 is less than the thickness of the coextruded sheet B5.
When the online post-coextrusion die for the soft and hard composite sealing rubber strips is used, firstly, a bottom plate 1 of the soft and hard composite sealing rubber strip is fixed on a production sizing table supporting guide rail at a discharge end of a die of a profile extruder, a profile pressing frame 3 for feeding is fixed at the upper end of a coextrusion plate B5, heaters are respectively arranged at the rear part of a guide-in plate 7 and the front part of a composite plate 2, a guide pipe of hard rubber strip material conveying equipment is connected with a raw material input hole A7-6 at the right side of the guide-in plate 7, and a guide pipe of soft rubber strip material conveying equipment is connected with a raw material input hole B6-4 at the left side of the coextrusion; starting a profile extruder, moving a profile 4 extruded from a mold of the profile extruder forwards from a guide plate, guiding a rubber strip mounting groove at the lower part of the profile 4 to a guide rib 7-2 of a guide plate 7 to move forwards, starting feeding by a hard rubber strip material conveying device and a soft rubber strip material conveying device, combining the hard rubber strip material and the soft rubber strip material into an integrated rubber strip through a rubber strip converging through groove 2-1 at the front part of a composite plate 2 along with the continuous forward movement of the formed profile 4, enabling part of the upper hard rubber strip material to flow out of the rubber strip mounting groove at the lower part of the profile 4, cooling and shaping the profile, enabling a pressing wheel at the lower part of a profile pressing frame 3 to be in rolling contact with the upper surface of the profile 4, and continuously extruding the profile 4; realizes the synthetic coextrusion of the section bar and the soft and hard composite sealing rubber strip.
The part of the utility model not detailed is prior art.
Claims (6)
1. The utility model provides a crowded mould is crowded altogether after soft or hard composite sealing adhesive tape is online, includes bottom plate (1), introduction plate (7), crowded board A (6) altogether, crowded board B (5) altogether and composite sheet (2), characterized by: the bottom plate (1) is horizontally arranged, the guide plate (7) is transversely and vertically arranged at the rear part on the bottom plate (1), the co-extrusion plate A (6) is arranged at the front part of the guide plate (7) on the bottom plate (1), the co-extrusion plate B (5) is arranged at the front part of the co-extrusion plate A (6) on the bottom plate (1), and the composite plate (2) is arranged at the front part of the co-extrusion plate B (5) on the bottom plate (1); the bottom plate (1) is a rectangular flat plate, inwards concave longitudinal fixing grooves are symmetrically arranged on two sides of the upper surface of the bottom plate (1), and pressing blocks are arranged on the outer sides of the fixing grooves on the two sides.
2. The online post-coextrusion die for the soft and hard composite sealing rubber strip as claimed in claim 1, is characterized in that: the guide plate (7) is of a concave-shaped flat plate structure, a rectangular guide groove is formed in the middle of the upper surface of the guide plate (7), rectangular isolation blocks are symmetrically arranged on the left and right sides of the groove bottom surface of the guide groove, T-shaped section guide ribs are arranged on the groove bottom surfaces of the two sides of the isolation blocks, bolt counter bores are formed in the back of the guide plate (7), bolt holes are formed in the two sides of the rear portion of the guide plate (7), a feeding hole A is formed in the middle of the right side of the front of the guide plate (7), a transverse raw material input hole A is formed in the middle of the right side of the guide plate (7), the raw material input hole A is communicated with the feeding hole A, an inwards concave pressing groove A is formed in the lower portion of the left side of the guide plate (7), the pressing groove A corresponds to and presses the left side pressing block on the bottom plate (1), rectangular supporting blocks are symmetrically arranged at the left end and the right end of the lower surface of the guide plate (7.
3. The online post-coextrusion die for the soft and hard composite sealing rubber strip as claimed in claim 1, is characterized in that: the appearance structure and the size of the co-extrusion plate A (6) and the guide plate (7) are consistent, a fixed thread through hole is formed in the front of the co-extrusion plate A (6), the rear portion of the fixed thread through hole corresponds to a bolt counter bore in the rear side guide plate (7) and is connected with the guide plate (7) on the rear side through a bolt, a flow channel through hole A which is through from front to back is formed in the lower portion of each profile guide rib on the upper portion of the front of the co-extrusion plate A (6), a flow channel A is arranged between the rear fixed thread through holes of the co-extrusion plate A (6), the upper portion of the flow channel A is of a double Y-shaped shunting structure, upper branches of the flow channel A are respectively communicated with the flow channel through hole A correspondingly, and the right end of the flow channel A corresponds to and is communicated with; a feeding hole B is formed in the middle of the left side of the front of the co-extrusion plate A (6), a transverse raw material input hole B is formed in the middle of the left side of the co-extrusion plate A (6), and the raw material input hole B is communicated with the feeding hole B; the lower supporting block of the co-extrusion plate A (6) is correspondingly arranged with the fixed groove on the bottom plate (1).
4. The online post-coextrusion die for the soft and hard composite sealing rubber strip as claimed in claim 1, is characterized in that: the appearance structures and the sizes of the co-extrusion plate B (5) and the co-extrusion plate A (6) are consistent, a bolt counter bore is arranged in front of the co-extrusion plate B (5), the bolt counter bore is correspondingly connected with the front part of a fixed thread through hole on the co-extrusion plate A (6) at the rear side through a bolt, and threaded holes are formed in two sides and the upper part of the lower part of the front part of the co-extrusion plate B (5); the lower parts of the profile guide ribs on the upper part of the front of the co-extrusion plate B (5) are provided with L-shaped flow channel through holes B, the rear parts of the flow channel through holes B correspond to and are communicated with the flow channel through holes A on the front of the co-extrusion plate A (6), and the upper ends of the flow channel through holes B are arranged in the profile guide ribs; both sides of the lower part of the flow passage through hole B in front of the co-extrusion plate B (5) are provided with flow passage through holes C with equidirectional inclined long hole-shaped structures; a runner B is arranged between bolt counter bores at the back of the co-extrusion plate B (5), the structure of the runner B is the same as that of the runner A, the upper end of the runner B is communicated with a runner through hole C, and the left end of the runner B corresponds to and is communicated with the position of a feeding hole B in front of the co-extrusion plate A (6); a lower supporting block of the co-extrusion plate B (5) is correspondingly arranged with a fixed groove on the bottom plate (1), a concave pressing groove B is arranged at the lower part of the right side surface of the co-extrusion plate B (5), and the pressing groove B corresponds to and is pressed with a right pressing block on the bottom plate (1); threaded holes are formed in two sides of the upper surface of the co-extrusion plate B (5).
5. The online post-coextrusion die for the soft and hard composite sealing rubber strip as claimed in claim 1, is characterized in that: the upper structure and the size of the composite plate (2) are consistent with the appearance and the size of the co-extrusion plate B (5), the lower surface of the composite plate is flush with the lower surface of the co-extrusion plate B (5), the lower surface of the composite plate is higher than the lower surface of the co-extrusion plate B (5), bolt counter bores are arranged on the front surface of the composite plate (2), threaded holes are formed in two sides of the front surface of the composite plate (2), and the bolt counter bores correspond to the positions of the fixed threaded holes in the front surface of the co-extrusion plate B (5); the lower part of the profile guiding rib at the upper part of the composite board (2) is provided with a rubber strip confluence through groove; the upper part of the adhesive tape confluence through groove is of an inverted 'V' -shaped structure, the lower part of the adhesive tape confluence through groove is of an inclined door-shaped structure, the upper part of the rear end of the adhesive tape confluence through groove is correspondingly communicated with the upper runner through hole B of the co-extrusion plate B (5), and the lower part of the rear end of the adhesive tape confluence through groove is correspondingly communicated with the lower runner through hole C of the co-extrusion plate B (5).
6. The online post-coextrusion die for the soft and hard composite sealing rubber strip as claimed in claim 1, is characterized in that: the thickness of the co-extrusion plate A (6) is smaller than that of the guide plate (7), the thickness of the co-extrusion plate B (5) is smaller than that of the co-extrusion plate A (6), and the thickness of the composite plate (2) is smaller than that of the co-extrusion plate B (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922033517.1U CN211221954U (en) | 2019-11-22 | 2019-11-22 | Online back co-extrusion die for soft and hard composite sealing rubber strips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922033517.1U CN211221954U (en) | 2019-11-22 | 2019-11-22 | Online back co-extrusion die for soft and hard composite sealing rubber strips |
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| Publication Number | Publication Date |
|---|---|
| CN211221954U true CN211221954U (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922033517.1U Active CN211221954U (en) | 2019-11-22 | 2019-11-22 | Online back co-extrusion die for soft and hard composite sealing rubber strips |
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| Country | Link |
|---|---|
| CN (1) | CN211221954U (en) |
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2019
- 2019-11-22 CN CN201922033517.1U patent/CN211221954U/en active Active
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