CN211334378U - Rubber injection mold for shock absorber - Google Patents
Rubber injection mold for shock absorber Download PDFInfo
- Publication number
- CN211334378U CN211334378U CN201922484877.3U CN201922484877U CN211334378U CN 211334378 U CN211334378 U CN 211334378U CN 201922484877 U CN201922484877 U CN 201922484877U CN 211334378 U CN211334378 U CN 211334378U
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- Prior art keywords
- mold
- cavity
- injection
- mandrel
- rubber
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- Expired - Fee Related
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- 238000002347 injection Methods 0.000 title claims abstract description 67
- 239000007924 injection Substances 0.000 title claims abstract description 67
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 25
- 230000035939 shock Effects 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 claims description 43
- 239000003292 glue Substances 0.000 claims description 30
- 238000007373 indentation Methods 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 description 4
- 210000003205 muscle Anatomy 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000010070 extrusion (rubber) Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model relates to a rubber mold, in particular to a rubber injection mold for a shock absorber, which comprises an upper template, a middle template and a lower template which are arranged from top to bottom in sequence, wherein the top of the upper template is provided with an injection hole, the bottom of the upper template is provided with an upper cavity communicated with the injection hole, the middle template is provided with a middle cavity, the top of the lower template is provided with a lower mold core, and the upper cavity, the middle cavity and the lower mold core form a shock absorber cavity; the number of the injection holes is not less than two, and the injection holes are annularly arranged around the axis of the upper cavity; the bottom of the upper die plate is also provided with an upper exhaust groove, one end of the upper exhaust groove is positioned on the side surface of the upper die plate, and the other end of the upper exhaust groove is positioned on one side of the upper cavity and communicated with the upper cavity; the bottom of the lower mold core is provided with an exhaust hole, the bottom of the lower template is provided with a lower exhaust groove, one end of the lower exhaust groove is communicated with the lower exhaust hole, and the other end of the lower exhaust groove is positioned on the side surface of the lower template. The rubber body produced by the mold has uniform density, no layering phenomenon, long service life, high processing efficiency and less workload of the rear-end procedure.
Description
Technical Field
The utility model relates to a rubber mold, especially bumper shock absorber rubber injection mold.
Background
The rubber shock absorber comprises the rubber body, dabber and shell, and dabber and shell viscose play the cushioning effect on the rubber body, and dabber and shell are used for being connected with frame and engine support. The rubber body needs to be vulcanized after being injected by a mold. However, the existing mould is unreasonable in structural design, so that the density of the shock absorber after injection molding is inconsistent, the layering phenomenon occurs, and the service life of the shock absorber is short.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a bumper shock absorber density is even, does not have layering phenomenon, long service life's bumper shock absorber rubber injection mold, and concrete technical scheme is:
the rubber injection mold for the shock absorber comprises an upper mold plate, a middle mold plate and a lower mold plate which are sequentially arranged from top to bottom, wherein an injection hole is formed in the top of the upper mold plate, an upper mold cavity communicated with the injection hole is formed in the bottom of the upper mold plate, a middle mold cavity is formed in the middle mold plate, a lower mold core is arranged at the top of the lower mold plate, and the upper mold cavity, the middle mold cavity and the lower mold core form a shock absorber mold cavity; the number of the injection holes is not less than two, and the injection holes are annularly arranged around the axis of the upper cavity; the bottom of the upper die plate is also provided with an upper exhaust groove, one end of the upper exhaust groove is positioned on the side surface of the upper die plate, and the other end of the upper exhaust groove is positioned on one side of the upper cavity and is communicated with the upper cavity; the bottom of the lower mold core is provided with an exhaust hole, the bottom of the lower template is provided with a lower exhaust groove, one end of the lower exhaust groove is communicated with the lower exhaust hole, and the other end of the lower exhaust groove is positioned on the side surface of the lower template.
By adopting the technical scheme, the rubber can be uniformly distributed when being extruded into the mold through the plurality of injection holes, so that the density of the rubber body is uniform, the rubber injection time is shortened, the rubber clinker time in the cavity is shortened due to the short rubber injection time, the problem that the clinker is firstly and secondly caused by the long clinker time is solved, the condition that the clinker is not adhered to the raw material is avoided, and the phenomenon of layering cannot occur.
The upper exhaust groove, the exhaust hole and the lower exhaust groove are used for exhausting gas in the cavity during glue injection, so that the rubber body is more compact; also regard as the observation hole that stops the injecting glue simultaneously, rubber extrudes from last exhaust duct and exhaust hole after full rubber in the die cavity, stops the injecting glue when observing that the rubber that goes up exhaust duct and lower exhaust duct extruded reaches certain length, guarantees the inside complete injecting glue of die cavity, avoids appearing the incomplete phenomenon of rubber body shaping.
Furthermore, the number of the injection holes is not less than two, and the injection holes are arranged in an annular array around the axis of the upper cavity.
Through adopting above-mentioned technical scheme, annular array sets up equidistant setting promptly, homogeneity when guaranteeing the injecting glue.
Further, the bottom of cope match-plate pattern still is equipped with tears the limit groove, it is the ring channel to tear the limit groove, it sets up around last die cavity to tear the limit groove.
Furthermore, an upper sealing film rib is arranged at the bottom of the upper cavity, the upper sealing film rib is annular and is higher than the bottom of the upper cavity, the upper sealing film rib is tightly pressed on the top of the mandrel and is positioned at the edge of the top of the mandrel, and the upper sealing film rib is used for pressing an indentation at the edge of the top of the mandrel to seal the end face of the top of the mandrel; the bottom of the lower mold core is provided with a lower film sealing rib, the lower film sealing rib is annular and is higher than the bottom of the lower mold core, the lower film sealing rib is tightly pressed at the bottom of the mandrel and is positioned at the edge of the bottom of the mandrel, and the lower film sealing rib is used for pressing an indentation at the edge of the bottom of the mandrel to seal the end surface of the bottom of the mandrel; the hardness of the upper template and the lower template is greater than that of the mandrel.
Through adopting above-mentioned technical scheme, seal membrane muscle on and seal the both ends of membrane muscle through the extrusion dabber down, make the both ends of dabber warp to realize sealed function, rubber enters into dabber terminal surface and shaft hole when avoiding the injecting glue, and it is inconvenient that rubber enters into clearance in dabber terminal surface and the shaft hole.
Further, the distance between the upper film sealing rib and the lower film sealing rib is smaller than the height of the mandrel.
Furthermore, the indentation depth of the upper film sealing rib at the top of the mandrel is 0.3mm, and the indentation depth of the lower film sealing rib at the bottom of the mandrel is 0.3 mm.
By adopting the technical scheme, the sealing performance is improved by the plastic deformation of the mandrel, and meanwhile, the assembly height of a finished product is slightly influenced.
Further, the fillet radius of the middle cavity is larger than the fillet radius of the shell opposite to the middle cavity.
By adopting the technical scheme, the round angle of the middle cavity is large, so that the shell is tightly attached to the middle template, and no rubber exists on the outer surface of the shell.
Furthermore, the number of the upper cavities is not less than two, and the number of the middle cavities and the number of the lower cores are the same as that of the upper cavities; the glue injection plate is positioned on the upper template, a glue injection hole is formed in the top of the glue injection plate, a glue injection groove is formed in the bottom of the glue injection plate, and the glue injection groove is communicated with the glue injection hole and the injection hole respectively.
Through adopting above-mentioned technical scheme, the injecting glue board is convenient to be connected with the rubber extrusion jar.
Compared with the prior art the utility model discloses following beneficial effect has:
the utility model provides a rubber bulk density of bumper shock absorber rubber injection mold production is even, does not have the layering phenomenon, long service life to machining efficiency is high, and rear end process work load is few.
Drawings
FIG. 1 is a cross-sectional view of a rubber injection mold for a shock absorber;
FIG. 2 is an enlarged view of a portion of FIG. 1 at I;
FIG. 3 is an enlarged view of a portion of FIG. 1 at II;
FIG. 4 is a front view of the upper platen;
FIG. 5 is a front view of the middle template;
FIG. 6 is a front view of the lower platen;
fig. 7 is a front view of the glue-impregnated plate.
Detailed Description
The present invention will now be further described with reference to the accompanying drawings.
As shown in fig. 1 to 7, the rubber injection mold for the shock absorber comprises an upper mold plate 2, a middle mold plate 3 and a lower mold plate 4 which are sequentially arranged from top to bottom, wherein an injection hole 23 is formed in the top of the upper mold plate 2, an upper mold cavity 21 communicated with the injection hole 23 is formed in the bottom of the upper mold plate, a middle mold cavity 31 is formed in the middle mold plate 3, a lower mold core 41 is formed in the top of the lower mold plate 4, and the upper mold cavity 21, the middle mold cavity 31 and the lower mold core 41 form a shock absorber mold cavity; the number of the injection holes 23 is not less than two, and the injection holes 23 are annularly arranged around the axis of the upper cavity 21; an upper exhaust groove 24 is further formed in the bottom of the upper die plate 2, one end of the upper exhaust groove 24 is located on the side face of the upper die plate 2, and the other end of the upper exhaust groove 24 is located on one side of the upper cavity 21 and communicated with the upper cavity 21; the bottom of the lower core 41 is provided with an exhaust hole 42, the bottom of the lower template 4 is provided with a lower exhaust groove 43, one end of the lower exhaust groove 43 is communicated with the lower exhaust hole 42, and the other end of the lower exhaust groove 43 is positioned on the side surface of the lower template 4.
The plurality of injection holes 23 enable the rubber to be uniformly distributed when being extruded into the mold, so that the density of the rubber body 8 is uniform, the rubber injection time is shortened, the rubber clinker time in the cavity is shortened, the problem that the clinker is firstly processed by clinker processing and then processed by clinker processing due to long clinker processing time is solved, the problem that the clinker is not adhered to the raw material firstly processed by clinker processing is avoided, and the phenomenon of layering is avoided.
The upper exhaust groove 24, the exhaust hole 42 and the lower exhaust groove 43 are used for exhausting gas in the cavity during glue injection, so that the rubber body 8 is more compact; meanwhile, the rubber injection stopping observation hole is also used as an observation hole for stopping rubber injection, rubber is extruded from the upper exhaust groove 24 and the exhaust hole 42 after the cavity is filled with rubber, and the rubber injection is stopped when the rubber extruded from the upper exhaust groove 24 and the lower exhaust groove 43 reaches a certain length, so that the complete rubber injection in the cavity is ensured, and the phenomenon that the rubber body 8 is not completely molded is avoided. The lower exhaust groove 43 can also be a through groove, so that extruded rubber can be conveniently observed and cleaned.
Specifically, the lower core 41 of the lower template 4 is further provided with a positioning pin 5, and the positioning pin 5 is movably inserted into the shaft hole 73 of the core shaft 7.
The injection holes 23 are not less than two and are arranged in an annular array around the axis of the upper cavity 21. The annular array is arranged at equal intervals, so that the uniformity during glue injection is ensured.
The bottom of cope match-plate pattern 2 still is equipped with tears limit groove 25, tears limit groove 25 and is the ring channel, tears limit groove 25 and sets up around last die cavity 21.
An upper sealing film rib 22 is arranged at the bottom of the upper cavity 21, the upper sealing film rib 22 is annular, the upper sealing film rib 22 is higher than the bottom of the upper cavity 21, the upper sealing film rib 22 is tightly pressed on the top of the mandrel 7 and is positioned at the edge of the top of the mandrel 7, and the upper sealing film rib 22 is used for pressing an indentation at the edge of the top of the mandrel 7 to seal the end face of the top of the mandrel 7; the bottom of the lower mold core 41 is provided with a lower sealing film rib 44, the lower sealing film rib 44 is annular, the lower sealing film rib 44 is higher than the bottom of the lower mold core 41, the lower sealing film rib 44 is tightly pressed at the bottom of the mandrel 7 and is positioned at the edge of the bottom of the mandrel 7, and the lower sealing film rib 44 is used for pressing an indentation at the edge of the bottom of the mandrel 7 to seal the end face of the bottom of the mandrel 7; the hardness of the upper template 2 and the lower template 4 is greater than that of the mandrel 7.
The distance between the upper film sealing rib 22 and the lower film sealing rib 44 is smaller than the height of the mandrel 7, the indentation depth of the upper film sealing rib 22 at the top of the mandrel 7 is 0.3mm, and the indentation depth of the lower film sealing rib 44 at the bottom of the mandrel 7 is 0.3 mm.
Go up and seal membrane muscle 22 and seal membrane muscle 44 down and pass through the both ends of extrusion dabber 7, make the both ends of dabber 7 warp to realize sealed function, rubber enters into the terminal surface and the shaft hole 73 of dabber 7 when avoiding the injecting glue, and it is inconvenient that rubber enters into clearance in dabber 7 terminal surface and the shaft hole 73.
The widths of the upper film sealing rib 22 and the lower film sealing rib 44 are both 1.5-2mm, namely the widths of the indentations of the upper film sealing rib 22 and the lower film sealing rib 44 at the two ends of the mandrel 7 are 1.5-2mm, and the assembly height of the mandrel 7 is slightly influenced.
The mandrel is Q235, the upper template 2 and the lower template are 45 steel and die steel P20 or SKD-11, the plastic deformation of the mandrel 7 improves the sealing performance, and meanwhile, the influence on the assembly height of a finished product is small.
The radius of the middle cavity 31 is larger than the radius of the housing 9 opposite to the middle cavity 31. The round angle of the middle cavity 31 is large, so that the shell 9 is tightly attached to the middle template 3, and the outer surface of the shell 9 is free from rubber.
The number of the upper cavities 21 is not less than two, and the number of the middle cavities 31 and the lower cores 41 is the same as that of the upper cavities 21;
still include injecting glue board 1, injecting glue board 1 is located cope match-plate pattern 2, and the top of injecting glue board 1 is equipped with annotates gluey hole 11, and the bottom of injecting glue board 1 is equipped with annotates gluey groove 12, and injecting glue groove 12 communicates with each other with injecting glue hole 11 and injection hole 23 respectively.
The rubber injection plate 1 is conveniently connected with a rubber extrusion cylinder.
Claims (8)
1. The rubber injection mold for the shock absorber comprises an upper mold plate, a middle mold plate and a lower mold plate which are sequentially arranged from top to bottom, wherein an injection hole is formed in the top of the upper mold plate, an upper mold cavity communicated with the injection hole is formed in the bottom of the upper mold plate, a middle mold cavity is formed in the middle mold plate, a lower mold core is arranged at the top of the lower mold plate, and the upper mold cavity, the middle mold cavity and the lower mold core form a shock absorber mold cavity; it is characterized in that the preparation method is characterized in that,
the number of the injection holes is not less than two, and the injection holes are annularly arranged around the axis of the upper cavity;
the bottom of the upper die plate is also provided with an upper exhaust groove, one end of the upper exhaust groove is positioned on the side surface of the upper die plate, and the other end of the upper exhaust groove is positioned on one side of the upper cavity and is communicated with the upper cavity;
the bottom of the lower mold core is provided with an exhaust hole, the bottom of the lower template is provided with a lower exhaust groove, one end of the lower exhaust groove is communicated with the lower exhaust hole, and the other end of the lower exhaust groove is positioned on the side surface of the lower template.
2. The rubber injection mold for shock absorbers according to claim 1, wherein the injection holes are not less than two and are arranged in an annular array around the axis of the upper cavity.
3. The injection mold for rubber of a shock absorber according to claim 1, wherein the bottom of the upper mold plate is further provided with a tearing groove, the tearing groove is an annular groove, and the tearing groove is arranged around the upper cavity.
4. The rubber injection mold for shock absorbers according to claim 1, wherein,
the bottom of the upper cavity is provided with an upper sealing film rib, the upper sealing film rib is annular and is higher than the bottom of the upper cavity, the upper sealing film rib is tightly pressed on the top of the mandrel and is positioned at the edge of the top of the mandrel, and the upper sealing film rib is used for pressing an indentation at the edge of the top of the mandrel to seal the end surface of the top of the mandrel;
the bottom of the lower mold core is provided with a lower film sealing rib, the lower film sealing rib is annular and is higher than the bottom of the lower mold core, the lower film sealing rib is tightly pressed at the bottom of the mandrel and is positioned at the edge of the bottom of the mandrel, and the lower film sealing rib is used for pressing an indentation at the edge of the bottom of the mandrel to seal the end surface of the bottom of the mandrel;
the hardness of the upper template and the lower template is greater than that of the mandrel.
5. The injection mold for rubber of shock absorber according to claim 4, wherein the distance between the upper and lower film sealing ribs is smaller than the height of the mandrel.
6. The rubber injection mold for the shock absorber according to claim 5, wherein the indentation depth of the upper film sealing rib at the top of the mandrel is 0.3mm, and the indentation depth of the lower film sealing rib at the bottom of the mandrel is 0.3 mm.
7. The rubber injection mold for shock absorbers according to claim 1, wherein the middle cavity has a radius of a rounded corner larger than a radius of a rounded corner of the housing opposite to the middle cavity.
8. The rubber injection mold for shock absorbers according to any one of claims 1 to 7, wherein the number of the upper cavities is not less than two, and the number of the middle cavities and the number of the lower cores are the same as the number of the upper cavities; the glue injection plate is positioned on the upper template, a glue injection hole is formed in the top of the glue injection plate, a glue injection groove is formed in the bottom of the glue injection plate, and the glue injection groove is communicated with the glue injection hole and the injection hole respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922484877.3U CN211334378U (en) | 2019-12-31 | 2019-12-31 | Rubber injection mold for shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922484877.3U CN211334378U (en) | 2019-12-31 | 2019-12-31 | Rubber injection mold for shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211334378U true CN211334378U (en) | 2020-08-25 |
Family
ID=72104962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922484877.3U Expired - Fee Related CN211334378U (en) | 2019-12-31 | 2019-12-31 | Rubber injection mold for shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211334378U (en) |
-
2019
- 2019-12-31 CN CN201922484877.3U patent/CN211334378U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 2145 Xinwu Road, Wuxi, Jiangsu Province Patentee after: Wuxi Sinan Shock Absorber Co.,Ltd. Address before: 214000 plot E-17, phase II, Xinan supporting area, Wuxi New Area, Jiangsu Province Patentee before: Wuxi Sinan Shock Absorber Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200825 |