阅读说明：本技术 一种磁塑模内共挤冰箱门封条制备方法 (Preparation method of magnetic-mould internal-coextrusion refrigerator door seal ) 是由 田海明 朱金才 王应民 于 2020-07-01 设计创作，主要内容包括：本发明公开一种磁塑模内共挤冰箱门封条制备方法,包括胶套原材料供料、磁条输送、门封条挤出、门封条定型、门封条冷却、门封条切割和门封条成品焊接。本发明胶套与磁条通过挤出模共挤,确保胶套磁条孔腔直接包裹磁条由挤出机端部挤出模挤出,减少穿磁工序提高生产效率,同时胶套磁条孔腔直接包裹磁条,能够降低门封条整体高度,适应冰箱门箱小间距时使用,提高冰箱密封性能,磁条与胶套磁条孔腔内侧面密合接触,能够在降低磁条磁力的同时保证磁条吸力,节约生产成本。(The invention discloses a preparation method of a magnetic mold internal co-extrusion refrigerator door seal, which comprises the steps of rubber sleeve raw material feeding, magnetic strip conveying, door seal extrusion, door seal shaping, door seal cooling, door seal cutting and door seal finished product welding. According to the refrigerator door seal, the rubber sleeve and the magnetic strip are co-extruded through the extrusion die, the magnetic strip is directly wrapped in the cavity of the magnetic strip of the rubber sleeve and extruded by the extrusion die at the end part of the extruder, the magnetic penetrating process is reduced, the production efficiency is improved, meanwhile, the magnetic strip is directly wrapped in the cavity of the magnetic strip of the rubber sleeve, the overall height of the door seal can be reduced, the refrigerator door seal is suitable for being used when the distance between refrigerator doors is small, the sealing performance of the refrigerator is improved, the magnetic strip is in close contact with the inner side surface of the cavity of.)

1. A preparation method of a magnetic mould inner co-extrusion refrigerator door seal is characterized by comprising the following steps

1) Raw material feeding of the rubber sleeve: quantitatively putting the rubber sleeve raw material into a feeding end of an extruder, and extruding the rubber sleeve raw material out of a rubber sleeve through an extrusion die at the end part of the extruder;

2) magnetic strip conveying: conveying the magnetized magnetic stripe into an extrusion die at the end part of an extruder through a buffer device and an auxiliary traction device;

3) door seal strip extrusion: extruding the rubber sleeve raw material through an extrusion die at the end part of an extruder, and simultaneously ensuring that the extruded rubber sleeve wraps the magnetic strip and synchronously extruding a door seal strip through the extrusion die;

4) shaping a door seal strip: cooling and shaping the door seal extruded by the extruding die at the end part of the extruder;

5) cooling the door seal: cooling the shaped door seal by a cooling device;

6) door seal cutting: cutting the cooled door seal according to the size of the door seal finished product;

7) welding a door seal finished product: and welding the cut door seal strip into a door seal strip finished product through a welding device.

2. The method of claim 1, wherein the extrusion die at the end of the extruder comprises a profile die plate, an inner support die plate, a side feeding die plate and a magnetic stripe feeding die plate, the inner support die plate is installed at the right side of the profile die plate, the side feeding die plate is installed at the right side of the inner support die plate, the magnetic stripe feeding die plate is installed at the right side of the side feeding die plate, the right side of the profile die plate comprises an outer discharging channel, the left side of the profile die plate comprises a die hole communicated with the outer discharging channel, the inner support die plate comprises an inner discharging channel, the inner side of the inner discharging channel comprises an inner support protrusion, the front side of the side feeding die plate comprises a feeding inlet fixedly connected with the end of the extruder, the left side of the side feeding die plate comprises a feeding channel communicated with the feeding channel, the inner side of the feeding channel comprises a backflow prevention protrusion, and the backflow prevention protrusion comprises a magnetic stripe guide groove, and the magnetic strip inlet template is provided with a magnetic strip inlet slot.

3. The method as claimed in claim 2, wherein the mold hole of the outer mold plate has the same shape as the outer shape of the rubber sleeve, the inner side of the mold hole has a cavity, the inner protrusion of the inner protrusion plate has the same shape as the inner cavity of the mold hole, the inner protrusion of the inner protrusion plate corresponds to the inner cavity of the outer mold plate, the inner protrusion is located inside the inner cavity of the mold hole, and the inner protrusion is not located in the cavity of the mold hole, which is covered by the magnetic stripe.

4. The method of claim 2, wherein the horizontal transverse center lines of the magnetic strip guide grooves in the side feeding template, the magnetic strip inlet slot holes in the magnetic strip inlet template, and the magnetic strip bore holes in the upper die holes of the outline template are coincident with each other.

5. The method of claim 2, wherein the vertical longitudinal cross-sections of the outer channel of the profile plate, the inner channel of the inner backing plate, and the feeding channel of the side feeding plate are the same.

6. The method as claimed in claim 2, wherein the left side of the inner anti-backflow protrusion of the feeding channel of the side feeding template is located at the left side of the side feeding template, and the inner anti-backflow protrusion of the feeding channel is embedded at the right side of the inner supporting protrusion of the inner discharging channel of the inner supporting template.

7. The method of claim 1, wherein the magnetic stripe is made of barium ferrite, strontium ferrite, like or unlike magnetic powder.

Technical Field

The invention relates to the field of refrigerator door seal preparation methods, and particularly belongs to a magnetic mold internal co-extrusion refrigerator door seal preparation method.

Background

The refrigerator is a refrigeration device for keeping constant low temperature, the basic requirement of the refrigerator is heat preservation performance, and the door seal is an important component for ensuring the heat preservation performance of the refrigerator. With the improvement of the energy consumption level of the refrigerator, the contribution of the door seal to the energy consumption of the refrigerator is more and more important, the traditional refrigerator energy-saving scheme mostly depends on the heat preservation measures such as improving the COP value of a compressor, increasing the thickness of a foaming layer or using a vacuum heat insulation plate and the like, the manufacturing cost of the refrigerator is improved, and when the energy efficiency is improved to a certain stage, the energy consumption is reduced to the maximum value, like the wooden barrel effect, and the weakest place of the energy consumption of the refrigerator is still the position of the door seal between the door boxes. The traditional preparation method of the refrigerator door seal at present has the following problems in the actual production process: 1, when the door seal is produced by the traditional preparation method of the refrigerator door seal, a door seal rubber sleeve is extruded by an extruder, and after the door seal is shaped, cooled and cut, a magnetic penetrating procedure is carried out, so that the production efficiency is low; 2, when the door seal is produced by the traditional preparation method of the refrigerator door seal, because the door seal rubber sleeve is extruded firstly and then the magnetic penetration process is carried out, the size of the magnetic stripe hole cavity is larger than that of the magnetic stripe, the magnetic stripe can be ensured to smoothly penetrate into the magnetic stripe hole cavity of the door seal rubber sleeve, the integral height of the door seal is increased, and the door seal can not be used when the distance between the refrigerator door and the refrigerator door is small; 3, when the traditional refrigerator door seal preparation method is used for producing a door seal, the size of the magnetic stripe hole cavity of the door seal rubber sleeve is larger than that of the magnetic stripe, a gap is formed between the magnetic stripe and the inner side surface of the magnetic stripe hole cavity of the door seal rubber sleeve, and when a refrigerator door body is closed, the requirement on the suction force of the magnetic stripe adsorbed on a refrigerator body is high, so that the production cost of the magnetic stripe is increased.

According to the refrigerator door seal, the rubber sleeve and the magnetic strip are co-extruded through the extrusion die, the magnetic strip is directly wrapped in the cavity of the magnetic strip of the rubber sleeve and extruded by the extrusion die at the end part of the extruder, the magnetic penetrating process is reduced, the production efficiency is improved, meanwhile, the magnetic strip is directly wrapped in the cavity of the magnetic strip of the rubber sleeve, the overall height of the door seal can be reduced, the refrigerator door seal is suitable for being used when the distance between refrigerator doors is small, the sealing performance of the refrigerator is improved, the magnetic strip is in close contact with the inner side surface of the cavity of.

Disclosure of Invention

The invention provides a preparation method of a co-extrusion refrigerator door seal in a magnetic mould, wherein a rubber sleeve and a magnetic strip are co-extruded through an extrusion die, the fact that the magnetic strip is directly wrapped in a magnetic strip hole cavity of the rubber sleeve is ensured to be extruded by the extrusion die at the end part of an extruder, the magnetic penetrating process is reduced, the production efficiency is improved, the fact that the magnetic strip is directly wrapped in the magnetic strip hole cavity of the rubber sleeve is realized, the overall height of the door seal can be reduced, the refrigerator door seal is suitable for being used when the distance between a refrigerator door and a refrigerator door is small, the sealing performance of the refrigerator is improved, the magnetic strip is. While solving the problems mentioned in the background art above.

The technical scheme adopted by the invention is as follows:

a preparation method of a magnetic mould inner co-extrusion refrigerator door seal is characterized by comprising the following steps

Step one, raw material feeding of a rubber sleeve: quantitatively putting the rubber sleeve raw material into a feeding end of an extruder, and extruding the rubber sleeve raw material out of a rubber sleeve through an extrusion die at the end part of the extruder;

step two, magnetic stripe conveying: conveying the magnetized magnetic stripe into an extrusion die at the end part of an extruder through a buffer device and an auxiliary traction device;

step three, door seal extrusion: extruding the rubber sleeve raw material through an extrusion die at the end part of an extruder, and simultaneously ensuring that the extruded rubber sleeve wraps the magnetic strip and synchronously extruding a door seal strip through the extrusion die;

step four, shaping the door seal strip: cooling and shaping the door seal extruded by the extruding die at the end part of the extruder;

step five, cooling the door seal: cooling the shaped door seal by a cooling device;

step six, cutting the door seal: cutting the cooled door seal according to the size of the door seal finished product;

step seven, welding the door seal finished product: and welding the cut door seal strip into a door seal strip finished product through a welding device.

Preferably, extruder tip extrusion die has outline template, interior template, side feed template and advances the magnetic stripe template, and interior template installation of propping is on outline template right side, and side feed template installs on interior template right side of propping, advances the magnetic stripe template and installs on side feed template right side, outline template right side has outside discharging channel, and there is the nib outline template left surface, nib and outside discharging channel intercommunication, there is inboard discharging channel on the interior template of propping, and there is the interior arch that props inboard discharging channel, side feed template front side has the feeding entry, feeding entry and extruder tip fixed connection, and side feed template left surface has feedstock channel, and feeding entry and feedstock channel intercommunication, and there is the anti-reflux arch feedstock channel inboard, has the magnetic stripe guide way on the anti-reflux arch, there is the magnetic stripe inlet hole on the magnetic stripe feed template.

Preferably, the contour of the contour template is the same as the contour of the rubber sleeve, the inner side of the contour template is provided with a hole cavity, the shape of an inner support protrusion on the inner support template is the same as the shape of the hole cavity on the inner side of the contour template, the inner support protrusion on the inner support template corresponds to the hole cavity in the contour template, the inner support protrusion is positioned on the inner side of the hole cavity in the contour template, and the hole cavity in which the magnetic stripe is wrapped in the hole cavity is not provided with the inner support protrusion.

Preferably, the horizontal transverse center lines of the magnetic strip guide grooves in the side feeding templates, the magnetic strip inlet slotted holes in the magnetic strip inlet templates and the magnetic strip hole cavities in the upper die holes of the outline templates are mutually overlapped.

Preferably, the vertical longitudinal sections of the outer discharging channel on the outline template, the inner discharging channel on the inner supporting template and the feeding channel on the side feeding template are the same.

Preferably, the left side face of the inner side backflow preventing protrusion of the feeding channel in the side feeding template is positioned on the left side of the left side face of the side feeding template, and the inner side backflow preventing protrusion of the feeding channel is embedded on the right side of the inner side internal supporting protrusion of the inner side discharging channel on the internal supporting template.

Preferably, the magnetic strip is made of barium ferrite or strontium ferrite isotropic or anisotropic magnetic powder as raw materials.

Compared with the prior art, the invention has the following beneficial effects:

the invention develops a preparation method of a magnetic mould internal co-extrusion refrigerator door seal, which solves the following problems in the actual production process of the traditional preparation method of the refrigerator door seal: 1, when the door seal is produced by the traditional preparation method of the refrigerator door seal, a door seal rubber sleeve is extruded by an extruder, and after the door seal is shaped, cooled and cut, a magnetic penetrating procedure is carried out, so that the production efficiency is low; 2, when the door seal is produced by the traditional preparation method of the refrigerator door seal, because the door seal rubber sleeve is extruded firstly and then the magnetic penetration process is carried out, the size of the magnetic stripe hole cavity is larger than that of the magnetic stripe, the magnetic stripe can be ensured to smoothly penetrate into the magnetic stripe hole cavity of the door seal rubber sleeve, the integral height of the door seal is increased, and the door seal can not be used when the distance between the refrigerator door and the refrigerator door is small; 3, when the traditional refrigerator door seal preparation method is used for producing a door seal, the size of the magnetic stripe hole cavity of the door seal rubber sleeve is larger than that of the magnetic stripe, a gap is formed between the magnetic stripe and the inner side surface of the magnetic stripe hole cavity of the door seal rubber sleeve, and when a refrigerator door body is closed, the requirement on the suction force of the magnetic stripe adsorbed on a refrigerator body is high, so that the production cost of the magnetic stripe is increased.

According to the refrigerator door seal, the rubber sleeve and the magnetic strip are co-extruded through the extrusion die, the magnetic strip is directly wrapped in the cavity of the magnetic strip of the rubber sleeve and extruded by the extrusion die at the end part of the extruder, the magnetic penetrating process is reduced, the production efficiency is improved, meanwhile, the magnetic strip is directly wrapped in the cavity of the magnetic strip of the rubber sleeve, the overall height of the door seal can be reduced, the refrigerator door seal is suitable for being used when the distance between refrigerator doors is small, the sealing performance of the refrigerator is improved, the magnetic strip is in close contact with the inner side surface of the cavity of.

Drawings

FIG. 1 is a schematic view of the overall working process of the present invention;

FIG. 2 is a schematic view of an extrusion die of the present invention;

FIG. 3 is a schematic view of the assembly of the outline template, the internal stay template, the side feeding template and the magnetic strip feeding template in the extrusion die of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present invention will be described in further detail with reference to examples and specific embodiments.

Referring to the attached drawings, a preparation method of a magnetic mold internal co-extrusion refrigerator door seal is characterized by comprising the following steps of

Step one, raw material feeding of a rubber sleeve: quantitatively putting the rubber sleeve raw material into a feeding end of an extruder, and extruding the rubber sleeve raw material out of a rubber sleeve through an extrusion die 1 at the end part of the extruder;

step two, magnetic stripe conveying: conveying the magnetized magnetic strip into an extrusion die 1 at the end part of the extruder through a buffer device and an auxiliary traction device;

step three, door seal extrusion: extruding the rubber sleeve raw material out of the rubber sleeve through an extrusion die 1 at the end part of the extruder, and simultaneously ensuring that the extruded rubber sleeve wraps the magnetic strip and synchronously extruding a door seal strip through the extrusion die 1;

step four, shaping the door seal strip: cooling and shaping the door seal extruded by the extrusion die 1 at the end part of the extruder;

step five, cooling the door seal: cooling the shaped door seal by a cooling device;

step six, cutting the door seal: cutting the cooled door seal according to the size of the door seal finished product;

step seven, welding the door seal finished product: and welding the cut door seal strip into a door seal strip finished product through a welding device.

Preferably, the extruder end extrusion die 1 has an outer profile die plate 101, an inner support die plate 102, a side feeding die plate 103 and a magnetic stripe feeding die plate 104, the inner support die plate 102 is installed on the right side of the outer profile die plate 101, the side feeding die plate 103 is installed on the right side of the inner support die plate 102, the magnetic stripe feeding die plate 104 is installed on the right side of the side feeding die plate 103, the right side of the outer profile die plate 101 has an outer side discharge passage, the left side of the outer profile die plate 101 has a die hole 1011, the die hole 1011 is communicated with the outer side discharge passage, the inner support die plate 102 has an inner side discharge passage 1021, the inner side discharge passage 1021 has an inner support protrusion 1022, the front side of the side feeding die plate 103 has a feeding inlet 1031, the feeding inlet 1031 is fixedly connected with the end of the extruder, the left side of the side feeding die plate 103 has a feeding passage 1032, the feeding inlet 1031 is communicated with the feeding passage 1032, the inner side of the feeding passage 1032 has a backflow-, the magnetic stripe inlet template 104 is provided with a magnetic stripe inlet slot hole 1041.

Preferably, the shape of the die hole 1011 of the outline template 101 is the same as that of the outline of the rubber sleeve, the inner side of the die hole 1011 is provided with a cavity, the shape of the inner supporting protrusion 1022 on the inner supporting template 102 is the same as that of the cavity inside the die hole 1011, the inner supporting protrusion 1022 on the inner supporting template 102 corresponds to the cavity in the die hole 1011 of the outline template 101, the inner supporting protrusion 1022 is located on the inner side of the cavity in the die hole 1011, and the cavity in the die hole 1011, which wraps the magnetic strip, is not provided with the inner supporting protrusion 1022.

Preferably, the magnetic strip guide groove 1033 in the side feeding template 103, the magnetic strip inlet slot hole 1041 in the magnetic strip inlet template 104, and the horizontal transverse center lines of the magnetic strip hole cavity in the die hole 1011 on the outline template 101 are mutually overlapped.

Preferably, the outer discharging channels on the outline template 101, the inner discharging channels 1021 on the inner supporting template 102 and the feeding channels 1032 on the side feeding template 103 have the same vertical longitudinal section.

Preferably, the left side surface of the inner side backflow preventing protrusion 1034 of the feeding channel 1032 of the side feeding template 103 is located at the left side surface of the side feeding template 103, and the inner side backflow preventing protrusion 1034 of the feeding channel 1032 is embedded at the right side of the inner side internal supporting protrusion 1022 of the inner side discharging channel 1021 on the internal supporting template 102.

Preferably, the magnetic strip is made of barium ferrite or strontium ferrite isotropic or anisotropic magnetic powder as raw materials.

In the practice of the present invention, the catalyst is,

step one, raw material feeding of a rubber sleeve: quantitatively putting the rubber sleeve raw material into a feeding end of an extruder, and extruding the rubber sleeve raw material out of a rubber sleeve through an extrusion die 1 at the end part of the extruder;

step two, magnetic stripe conveying: conveying the magnetized magnetic strip into an extrusion die 1 at the end part of the extruder through a buffer device and an auxiliary traction device;

step three, door seal extrusion: extruding the rubber sleeve raw material out of the rubber sleeve through an extrusion die 1 at the end part of the extruder, and simultaneously ensuring that the extruded rubber sleeve wraps the magnetic strip and synchronously extruding a door seal strip through the extrusion die 1;

step four, shaping the door seal strip: cooling and shaping the door seal extruded by the extrusion die 1 at the end part of the extruder;

step five, cooling the door seal: cooling the shaped door seal by a cooling device;

step six, cutting the door seal: cutting the cooled door seal according to the size of the door seal finished product;

step seven, welding the door seal finished product: and welding the cut door seal strip into a door seal strip finished product through a welding device.

According to the refrigerator door seal, the rubber sleeve and the magnetic strip are co-extruded through the extrusion die 1, the fact that the magnetic strip is directly wrapped in the magnetic strip hole cavity of the rubber sleeve is guaranteed, the magnetic strip is extruded out of the extrusion die 1 at the end of the extruder, magnetic penetrating procedures are reduced, production efficiency is improved, the fact that the magnetic strip is directly wrapped in the magnetic strip hole cavity of the rubber sleeve is achieved, the overall height of the door seal can be reduced, the refrigerator door seal is suitable for being used when the distance between refrigerator doors is small, sealing performance of a refrigerator is improved, the magnetic strip is in close contact with the inner.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.