CN213006206U - Reverse injection device of rubber injection machine - Google Patents
Reverse injection device of rubber injection machine Download PDFInfo
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- CN213006206U CN213006206U CN202021454132.9U CN202021454132U CN213006206U CN 213006206 U CN213006206 U CN 213006206U CN 202021454132 U CN202021454132 U CN 202021454132U CN 213006206 U CN213006206 U CN 213006206U
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Abstract
The utility model discloses a rubber injection machine reverse injection device, including C type frame, go up the closed mould board, the injection fixed plate, injection motor and screw rod material feeding unit etc, be equipped with the injection feed cylinder at screw rod material feeding unit lower extreme mainly, and the upper end activity penetrates the injection material intracavity of injection feed cylinder, the injection piston on the closed mould board is installed to the lower extreme, this is a reverse injection structure, be different from traditional rubber injection machine forward injection and set up the injection feed cylinder above the injection piston, just so can be equipped with heating ring and temperature control element outside the injection feed cylinder, and can be equipped with the injection passageway that the axial link up and feed through injection material chamber in the injection piston, thereby break through the restriction of injection piston wall thickness in little injection volume rubber injection machine, make little injection volume rubber injection machine also can perfect design installation temperature control element on the basis of keeping original function; meanwhile, a non-return valve core arranged at the lower end of the screw feeding device is arranged in the injection material cavity, so that the non-return and anti-return functions of the rubber material in the injection material cavity are achieved.
Description
Technical Field
The utility model relates to a reverse injection device of rubber sizing material, a rubber injection machine reverse injection device promptly.
Background
The rubber injection machine is mainly composed of a C-shaped frame, an upper mold closing plate arranged at the bottom of the C-shaped frame, an injection fixing plate arranged at the top of the C-shaped frame, an injection motor and a piston cylinder which are arranged on the injection fixing plate, a screw feeding device driven by the injection motor is arranged below the injection motor, an injection piston, an injection charging barrel and the like are arranged below the screw feeding device, and the piston cylinder can drive the injection fixing plate to move up and down relative to the upper mold closing plate. Meanwhile, the rubber injection machine needs to be provided with a temperature control element on an injection part, which is very important for reducing the vulcanization time of products. However, the conventional rubber injection machine often adopts a forward injection mode, i.e. the injection cylinder is arranged below the injection piston, which makes it difficult to design and install the temperature control element on the injection piston for the rubber injection machine with small injection amount, because the wall thickness of the injection piston in the normal forward injection structure is too small due to the small volume of the rubber injection machine with small injection amount, and thus the design and installation of the temperature control element is limited.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art's defect and provide one kind through reverse design injection feed cylinder and injection piston, be about to inject the feed cylinder setting in injection piston top, install temperature control element on injecting the feed cylinder again to break through the restriction of injecting the piston wall thickness in the little injection quantity rubber injection machine, and make the rubber injection machine reverse injection device that little injection quantity rubber injection machine also can perfect design installation temperature control element on the basis of keeping original function.
The technical problem of the utility model is realized through following technical scheme:
a rubber injection machine reverse injection device comprises a C-shaped frame, an upper closing template arranged at the bottom of the C-shaped frame, an injection fixing plate arranged at the top of the C-shaped frame, an injection motor and a piston cylinder, wherein the injection motor and the piston cylinder are arranged on the injection fixing plate; a screw feeding device driven by the injection motor is arranged below the injection motor; the injection fixing plate is driven by the piston cylinder to move up and down relative to the upper die closing plate, the lower end of the screw feeding device is provided with an injection charging barrel, and the upper end of the screw feeding device movably penetrates into an injection charging cavity of the injection charging barrel, and the lower end of the screw feeding device is installed on the injection piston on the upper die closing plate; a check valve core arranged at the lower end of the screw feeding device is arranged in the injection material cavity, and a heating ring and a temperature control element are arranged outside the injection material barrel; an injection passage which is axially communicated with the injection cavity is arranged in the injection piston.
The screw feeding device injects the rubber material into the injection material cavity, the piston cylinder drives the injection fixing plate to move downwards relative to the upper die closing plate and synchronously drives the screw feeding device and the injection material barrel to move downwards, and the upper end of the injection piston penetrates into the injection material cavity to extrude the rubber material to enter the injection channel.
The screw feeding device comprises a storage barrel fixed on the bottom surface of the injection fixing plate and a feeding screw rod, wherein the upper end of the feeding screw rod is connected below the injection motor and driven by the injection motor to rotate, the lower end of the feeding screw rod movably penetrates into the storage barrel, a spiral extrusion feeding channel is formed between the feeding screw rod and the storage barrel, and the top of the storage barrel is provided with a feeding port communicated with the spiral extrusion feeding channel.
The storage cylinder is externally provided with a water jacket which is fixedly sleeved, a spiral annular flow passage is formed between the water jacket and the storage cylinder, the upper end of the spiral annular flow passage is provided with a hot oil inlet, and the lower end of the spiral annular flow passage is provided with a hot oil outlet.
Clamp springs and sealing rings are arranged between the upper end of the water jacket and the material storage barrel and between the lower end of the water jacket and the material storage barrel.
The upper end of the injection charging barrel is screwed and connected to the lower end of the storage barrel, the check valve core is installed at the lower end of the screw feeding device through a check valve and the like, and check is formed between the spiral extrusion feeding channel and the injection cavity.
The injection piston movably penetrates into the outer surface of the upper end of the injection charging barrel, and a plurality of annular anti-overflow troughs are arranged on the outer surface of the upper end of the injection charging barrel.
The lower end of the injection piston penetrates through the upper die clamping plate to install the material barrel water jacket.
The lower end of the injection piston is fixedly installed with the upper die closing plate through a pressing plate.
And a motor torque transmission assembly is arranged between the injection motor and the screw feeding device.
Compared with the prior art, the utility model discloses be equipped with the injection feed cylinder at screw rod material feeding unit lower extreme, and the activity of upper end penetrates the injection material intracavity of injection feed cylinder, the injection piston on closing the template at the lower extreme, this is a reverse injection structure, be different from traditional rubber injection machine forward injection and set up the injection feed cylinder above the injection piston promptly, just so can be equipped with heating ring and temperature control element outside the injection feed cylinder, and can be equipped with the injection passageway that the axial link up and communicate the injection material chamber in the injection piston, thereby break through the restriction of injection piston wall thickness in the small injection volume rubber injection machine, and make the small injection volume rubber injection machine also can perfect the design and install temperature control element on the basis of keeping original function; meanwhile, a non-return valve core arranged at the lower end of the screw feeding device is arranged in the injection material cavity, so that the non-return and anti-return functions of the rubber material in the injection material cavity are achieved.
Drawings
Fig. 1 is a schematic sectional view of the present invention.
Fig. 2 is a left side view (partially in section) of fig. 1.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the drawings.
As shown in fig. 1 and 2, the injection molding machine comprises a C-shaped frame, a C-shaped upper closing template, a cylinder jacket, a pressing plate screw, a cylinder fixing plate, an injection motor, a motor torque transmission assembly 311, a piston cylinder 32, a screw rod feeding device 4, a material storage cylinder 41, a feeding screw rod 42, a screw extrusion feeding channel 43, a screw extrusion feeding port 44, a feeding port 5, an injection cylinder 51, an injection cavity 52, a heating ring 52, a temperature control element 53, an injection piston 6, an injection channel 61, an annular overflow preventing groove 62, a check valve core 7, a check valve 71, an equal-height sleeve 8, a water jacket 81, a hot oil inlet 82, a hot oil outlet 83, a spiral annular flow passage 84, a clamp spring and a sealing ring.
A rubber injection machine reverse injection device is mainly applied to a vertical rubber injection machine with small injection quantity, and structurally comprises a C-shaped frame 1, an upper closing template 2 installed at the bottom of the C-shaped frame, an injection fixing plate 3 installed at the top of the C-shaped frame, an injection motor 31 and a piston cylinder 32 installed on the injection fixing plate, and the like, wherein the piston cylinder can drive the injection fixing plate 3 to move up and down relative to the upper closing template 2.
A screw feeding device 4 is arranged below the injection motor 31, and a motor torque transmission component 311 is arranged between the injection motor 31 and the screw feeding device 4, so that the power of the injection motor 31 is transmitted to the screw feeding device 4 through the motor torque transmission component 311 for feeding.
The screw feeding device 4 comprises a storage barrel 41 fixed on the bottom surface of the injection fixing plate 2, and a feeding screw 42 with the upper end connected below the injection motor 31, specifically connected to the motor torque transmission component 311, driven by the injection motor 31 to rotate, and the lower end movably penetrating into the storage barrel 41, a spiral extrusion feeding channel 43 is formed between the feeding screw and the storage barrel 41, and the top of the storage barrel 41 is provided with a feeding port 44 communicated with the spiral extrusion feeding channel 43, so that the rubber material can be fed downwards along the rotation action of the feeding screw 42 after entering the spiral extrusion feeding channel 43 from the feeding port 44.
The water jacket 8 is arranged outside the storage cylinder 41, a spiral annular flow passage 83 is formed between the water jacket and the storage cylinder 41, and the specific structure is as follows: clamp springs 84 and seal rings 85 are arranged between the upper end of the water jacket 8 and the storage cylinder 41 and between the lower end of the water jacket 8 and the storage cylinder 41, the water jacket 8 is sleeved and fixed outside the storage cylinder 41 through the two clamp springs 84, and the water jacket 8 and the storage cylinder 41 are sealed through the two seal rings 85, namely the seal of the spiral annular flow passage 83 is ensured; the upper end of the spiral annular flow passage 83 is provided with a hot oil inlet 81, the lower end of the spiral annular flow passage is provided with a hot oil outlet 82, hot oil is filled into the spiral annular flow passage 83 through the hot oil inlet 81 and flows out from the hot oil outlet 82, and heating, plasticizing and softening of the rubber in the storage cylinder 41 can be achieved, so that good rubber fluidity is achieved.
The lower end of the screw feeding device 4 is provided with an injection material barrel 5, and an injection piston 6, the upper end of the injection piston movably penetrates into an injection material cavity 51 of the injection material barrel 5, and the lower end of the injection piston is installed on the upper closing template 2.
The upper end of the injection material cylinder 5 is screwed and connected to the lower end of the material storage cylinder 41, the injection material cavity 51 penetrates along the axial direction of the injection material cylinder 5, the check valve core 7 is arranged in the injection material cavity 51, and the check valve core is arranged at the lower end of the screw feeding device 4 by a check valve equal-height sleeve 71, so that a check is formed between the spiral extrusion feeding channel 43 and the injection material cavity 51, namely, the rubber material conveyed by the spiral extrusion feeding channel 43 only can enter the injection material cavity 51, and the rubber material in the injection material cavity 51 cannot return to the spiral extrusion feeding channel 43, so that the effect of preventing material return is achieved.
Meanwhile, the lower end of the injection piston 6 is fixedly installed with the upper die plate 2 through a press plate screw 23 and a press plate 22, the lower end of the injection piston 6 penetrates through the upper die plate 2 to install the charging barrel water jacket 21, and an injection channel 61 which axially penetrates through and is communicated with the injection cavity 51 is arranged in the injection piston 6 and can be used for receiving rubber materials conveyed in the injection cavity 51. And, the injection piston 6 activity is penetrated and is still equipped with a plurality of annular anti-overflow silo 62 in the upper end surface of injection feed cylinder 5, plays the anti-overflow effect when injection feed cylinder 5 cooperates the injection piston 6 to move.
The utility model relates to a break through the special injection structure that little injection volume rubber injection machine injection piston can't design temperature control element because the wall thickness restriction, the working process as follows: after entering the spiral extrusion feeding channel 43 from the feeding port 44 at the top of the storage barrel 41, the rubber material is fed downwards along the rotation action of the feeding screw 42, and during the downward feeding process, the rubber material can be heated, plasticized and softened by the water jacket 8 outside the storage barrel 41 to form better rubber material fluidity, and then is injected into the injection cavity 51 of the injection barrel 5 and is continuously and stably heated and controlled by the heating ring 52, so that the temperature is kept within a certain range; when the rubber in the injection cavity 51 reaches a certain volume, the piston cylinder 32 drives the injection fixing plate 3 to move downwards, the rubber in the injection cavity 51 is pressed into the injection channel 61 of the injection piston 6 by huge injection pressure, and the water inlet and the water outlet of the water jacket 21 of the charging barrel are directly connected with cooling water to prevent high temperature in the mold from being transmitted to the injection channel 61 and then injected into the high temperature mold through the injection nozzle. Because the check valve core 7 arranged at the lower end of the screw feeding device 4 is arranged in the injection cavity 51, the check valve core can only limit the rubber material to be unidirectionally injected into the injection cavity 51 from the spiral extrusion feeding channel 43, and can float upwards under the reaction force of the injection pressure to block and play a role in preventing material return.
The above description is only an embodiment of the present invention, and those skilled in the art should understand that any structural design similar to the embodiment is included in the protection scope of the present invention.
Claims (10)
1. A rubber injection machine reverse injection device comprises a C-shaped frame (1), an upper closing template (2) arranged at the bottom of the C-shaped frame, an injection fixing plate (3) arranged at the top of the C-shaped frame, an injection motor (31) and a piston cylinder (32) which are arranged on the injection fixing plate; a screw feeding device (4) driven by the injection motor is arranged below the injection motor (31); the injection device is characterized in that the lower end of the screw feeding device (4) is provided with an injection material barrel (5), the upper end of the screw feeding device movably penetrates into an injection material cavity (51) of the injection material barrel (5), and the lower end of the screw feeding device is provided with an injection piston (6) which is arranged on the upper closing template (2); a check valve core (7) arranged at the lower end of the screw feeding device (4) is arranged in the injection material cavity (51), and a heating ring (52) and a temperature control element (53) are arranged outside the injection charging barrel (5); an injection channel (61) which axially penetrates through and is communicated with the injection cavity (51) is arranged in the injection piston (6).
2. The reverse injection device of the rubber injection machine according to claim 1, characterized in that the screw feeder (4) injects the rubber compound into the injection cavity (51), the piston cylinder (32) drives the injection fixing plate (3) to move downwards relative to the upper mold clamping plate (2) and synchronously drives the screw feeder (4) and the injection charging barrel (5) to move downwards, and the upper end of the injection piston (6) penetrates into the injection cavity (51) to extrude the rubber compound into the injection channel (61).
3. The reverse injection device of the rubber injection machine according to claim 1, characterized in that the screw feeding device (4) comprises a storage barrel (41) fixed on the bottom surface of the injection fixing plate (3), and a feeding screw (42) which is connected below the injection motor (31) at the upper end and driven by the injection motor to rotate, and the lower end movably penetrates into the storage barrel (41), a spiral extrusion feeding channel (43) is formed between the feeding screw and the storage barrel (41), and a feeding port (44) communicated with the spiral extrusion feeding channel (43) is arranged at the top of the storage barrel (41).
4. The back injection device of a rubber injection machine according to claim 3, characterized in that the storage cylinder (41) is externally provided with a fixedly sleeved water jacket (8), a spiral annular flow passage (83) is formed between the water jacket and the storage cylinder (41), the upper end of the spiral annular flow passage is provided with a hot oil inlet (81), and the lower end of the spiral annular flow passage is provided with a hot oil outlet (82).
5. The back injection device of the rubber injection machine according to claim 4, characterized in that a snap spring (84) and a sealing ring (85) are respectively arranged between the upper end of the water jacket (8) and the storage cylinder (41) and between the lower end of the water jacket (8) and the storage cylinder (41).
6. The reverse injection device of the rubber injection machine according to claim 3, characterized in that the upper end of the injection cylinder (5) is screwed and connected with the lower end of the storage cylinder (41), the check valve core (7) is arranged at the lower end of the screw feeding device (4) through a check valve equal-height sleeve (71) and forms a check between the spiral extrusion feeding channel (43) and the injection cavity (51).
7. A rubber injection machine back injection unit as in claim 1, wherein said injection piston (6) is movably inserted into the outer surface of the upper end of the injection cylinder (5) and is provided with a plurality of annular spill-proof grooves (62).
8. A rubber injection machine back injection device according to claim 1, characterized in that the lower end of the injection piston (6) is provided with a cartridge water jacket (21) through the upper closing die plate (2).
9. A rubber injection molding machine back injection apparatus as claimed in claim 1, wherein said injection piston (6) is fixedly mounted at its lower end to said upper clamp plate (2) via a clamp plate (22).
10. A rubber injection machine reverse injection apparatus according to claim 1, characterized in that a motor torque transmission assembly (311) is provided between the injection motor (31) and the screw feeder (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021454132.9U CN213006206U (en) | 2020-07-22 | 2020-07-22 | Reverse injection device of rubber injection machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021454132.9U CN213006206U (en) | 2020-07-22 | 2020-07-22 | Reverse injection device of rubber injection machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213006206U true CN213006206U (en) | 2021-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021454132.9U Active CN213006206U (en) | 2020-07-22 | 2020-07-22 | Reverse injection device of rubber injection machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213006206U (en) |
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2020
- 2020-07-22 CN CN202021454132.9U patent/CN213006206U/en active Active
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