CN211467286U - Injection mold of rubber spare - Google Patents
Injection mold of rubber spare Download PDFInfo
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- CN211467286U CN211467286U CN201922283807.1U CN201922283807U CN211467286U CN 211467286 U CN211467286 U CN 211467286U CN 201922283807 U CN201922283807 U CN 201922283807U CN 211467286 U CN211467286 U CN 211467286U
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Abstract
The utility model relates to a technical field that moulds plastics especially relates to an injection mold of rubber spare. In order to improve the production efficiency of the rubber part and reduce the production cost, the utility model provides an injection mold of the rubber part, wherein, a front template and a rear template are buckled with each other to form a mold core with an injection mold groove inside; the central insert is arranged in the injection mold cavity, the front end core rod is clamped on the front template, and the tail end core rod is clamped in the rear template; the outer insert is clamped between the front template and the rear template and sleeved on the periphery of the central insert, and the inner wall of the outer insert is provided with an outer edge pressure ring provided with an outer edge ring groove; the front mould pressing plate is pressed on the front mould plate and connected with the front mould plate, and the rear mould pressing plate is attached to the bottom surface of the rear mould plate and connected with the rear mould plate. Adopt the utility model discloses the injection mold of rubber spare moulds plastics and forms the rubber spare, has improved the production efficiency of rubber spare, has reduced the manufacturing cost of rubber spare.
Description
Technical Field
The utility model relates to a technical field that moulds plastics especially relates to an injection mold of rubber spare.
Background
The rubber member 01 shown in fig. 1 is generally formed by injection molding using an injection mold. Because the injection mold adopted during injection molding is formed by splicing a plurality of parts, the rubber piece formed by injection molding is easy to form a PL line, namely a parting line, at the splicing position in the injection mold. However, due to the functional limitation of the rubber member, the PL line cannot be provided at the outer edge 011 of the rubber member 01. Therefore, after the injection molding of the rubber part is completed, the rubber part is usually required to be subjected to secondary treatment, namely PL lines are removed, so that the use requirement can be met. Like this, the rubber spare that the formation of moulding plastics need carry out the secondary operation rear and can use, greatly reduced the production efficiency of rubber spare, increased the manufacturing cost of rubber spare.
SUMMERY OF THE UTILITY MODEL
In order to improve the production efficiency of rubber parts and reduce the production cost, the utility model provides an injection mold for rubber parts, which comprises a front template, a rear template, a central insert, an outer insert, a front mold pressing plate and a rear mold pressing plate, wherein the front template and the rear template are buckled with each other to form a mold core, and an injection mold cavity is arranged in the mold core; the central insert is arranged in the injection mold cavity, the core bar at the front end of the central insert is clamped on the front template, and the core bar at the tail end of the central insert is clamped in the rear template; the outer insert is clamped between the front template and the rear template and sleeved on the periphery of the central insert, an outer edge pressing ring is arranged on the inner wall of the outer insert, and an outer edge ring groove is formed in the surface, facing the rear template, of the outer edge pressing ring; the front mould pressing plate is pressed on the front mould plate and is connected with the front mould plate through a connecting bolt, and the rear mould pressing plate is attached to the bottom surface of the rear mould plate and is connected with the rear mould plate through a connecting bolt.
Adopt the utility model discloses when the injection mold of rubber spare was moulded plastics and is formed the rubber spare, the outer fringe clamping ring that utilizes outer mold insert and the outer fringe clamping ring forms the outer fringe of rubber spare on the outer fringe annular cooperation back template on the face of back template, can avoid appearing the PL line in the outer fringe department of rubber spare to can cancel the secondary treatment operation for getting rid of the PL line implementation, simplify the production step of rubber spare, improve the production efficiency of rubber spare, reduce the manufacturing cost of rubber spare. In addition, when the mold is opened, the front mold plate is pulled by the front mold pressing plate to separate the front mold plate from the outer mold insert, so that the mold is opened conveniently and quickly.
Preferably, a front clamping groove for accommodating a front clamping block is formed in the top of the front template, and the front clamping block is connected with a front core rod of the central insert in an interference fit manner; the bottom of the rear template is provided with a rear clamping groove for accommodating a tail end clamping block, and the tail end clamping block is connected with the tail end core rod of the central insert in an interference fit manner. Therefore, the front end clamping block positioned in the front clamping groove and the tail end clamping block positioned in the rear clamping groove are respectively connected with the front end core rod and the tail end core rod of the central insert through interference fit, so that the central insert is conveniently installed in the injection molding die groove of the die core, the injection molding preparation efficiency is improved, the central insert is conveniently separated from the front template and the rear template during demolding, and the demolding efficiency is improved.
Preferably, the injection mold further comprises a rear mold support, the rear mold support comprises a bottom plate, two support blocks, a floating plate and an ejector rod, and the bottom plate is parallel to the rear mold pressing plate and is connected with the rear mold plate through a connecting rod penetrating through the rear mold pressing plate; the two support blocks are positioned between the bottom plate and the rear molding press plate and are oppositely arranged at two sides of a floating gap between the bottom plate and the rear molding press plate; the floating plate is positioned in the floating gap and is provided with a stepped slotted hole inserted with the free end of the tail end core rod of the central insert; the lower end of the ejector rod is inserted on the floating plate, and the upper end of the ejector rod penetrates through the rear die pressing plate and the rear die plate and abuts against the bottom surface of the outer insert; when the floating plate is lifted towards the rear template, the floating plate pushes the central insert to move towards the front template, and the upper end of the ejector rod pushes the outer insert away from the rear template. Therefore, after the mold is opened, the floating plate is lifted towards the direction of the rear mold plate, the floating plate pushes the central insert to move towards the direction of the front mold plate, and meanwhile, the upper end of the ejector rod pushes the outer insert away from the rear mold plate, so that injection molding personnel can take the rubber part formed by injection molding down from the central insert conveniently, the demolding efficiency is improved, the production efficiency of the rubber part is further improved, and the production cost of the rubber part is reduced.
Preferably, a buffer spring is sleeved on the free end of the tail end core rod of the central insert, and the buffer spring is installed in a buffer groove at the bottom of the floating plate. Therefore, when the die assembly operation is completed in the injection preparation work, the reset speed of the tail end core rod of the central insert can be buffered by using the buffer spring, and the injection molding is prevented from being influenced by damage of the tail end core rod of the central insert in the reset process. Furthermore, a positioning nut is sleeved at the free end of the tail end core rod of the central insert, and the buffer spring is located between the positioning nut and the floating plate. Therefore, the buffer spring can be locked on the tail end core rod of the central insert by using the positioning nut, and the buffer spring is prevented from falling off in the using process to influence the injection molding efficiency.
Preferably, a support pillar for supporting the rear molding plate is disposed between the bottom plate and the rear molding plate, and the support pillar is fixed to the bottom plate and penetrates through the floating plate. Therefore, the supporting columns can be matched with the supporting blocks to support the mold core, the front mold pressing plate and the rear mold pressing plate, supporting stability is improved, and the supporting columns can be used for guiding up-and-down movement of the floating plates.
Preferably, the bottom plate is provided with a reset guide pillar, and a free end of the reset guide pillar is inserted into the reset guide hole at the bottom of the floating plate. Like this, when the floating plate resets, usable guide pillar that resets leads the reseing of floating plate, avoids floating plate to take place the dislocation when resetting, even causes the damage to central mold insert.
Preferably, the ejector rod is sleeved with a return buffer spring, the lower end of the return buffer spring abuts against the floating plate, and the upper end of the return buffer spring penetrates through the rear die pressing plate and abuts against a return groove in the rear die plate. Like this, when the compound die resets, usable buffer spring that resets cushions the inertia that produces when front template, preceding moulded board and outer insert reset, slows down the speed of resetting of front template, preceding moulded board and outer insert, avoids this injection mold to receive the damage when the compound die resets, prolongs the utility model discloses the injection mold's of rubber spare life. Furthermore, the lower end of the ejector rod is connected with an ejector rod guide post, the ejector rod guide post penetrates through the lower end of the floating plate and is provided with a clamping head, and the clamping head clamps the bottom surface of the floating plate and is inserted into the reset hole in the bottom plate. Therefore, when the ejector rod is reset, the ejector rod guide post is used for resetting and guiding the ejector rod, and the ejector rod is convenient to reset.
Drawings
FIG. 1 is a schematic structural view of a rubber part to be injection molded;
FIG. 2 is a schematic structural view of an injection mold for rubber parts according to the present invention;
FIG. 3 is a front view of the injection mold for the rubber member shown in FIG. 2;
FIG. 4 is a schematic sectional view A-A of FIG. 3;
FIG. 5 is a right side view of the injection mold for the rubber member shown in FIG. 2;
FIG. 6 is a schematic sectional view of the structure of B-B in FIG. 5;
FIG. 7 is a schematic cross-sectional view of C-C of FIG. 5;
FIG. 8 is an enlarged view of Q of FIG. 7;
FIG. 9 is a schematic top view of an injection mold for the rubber member shown in FIG. 2;
fig. 10 is a schematic sectional view of the structure of fig. 9 taken along line D-D.
Detailed Description
The injection mold for the rubber member of the present invention will be described in detail with reference to fig. 2 to 10.
As shown in fig. 2-10, the injection mold for rubber parts of the present invention comprises a front mold plate 11, a rear mold plate 12, a center insert 13, an outer insert 14, a front mold pressing plate 15 and a rear mold pressing plate 16. Wherein, a front mold cavity (not shown in the figure) is arranged on the front mold plate 11, a rear mold cavity (not shown in the figure) is arranged on the rear mold plate 12, and when the front mold plate 11 and the rear mold plate 12 are buckled to form a mold core, the front mold cavity and the rear mold cavity are butted to form an injection mold cavity 101 arranged in the mold core. The central insert 13 is mounted in the injection mold cavity, and the front core pin 131 of the central insert 13 is clamped on the front mold plate 11, and the rear core pin 132 of the central insert 13 is clamped in the rear mold plate 12. Preferably, a front clamping groove for accommodating the front clamping block 111 is formed in the top of the front template 11, and the front clamping block 111 is connected with the front core rod 131 of the central insert 13 through interference fit; the bottom of the rear template 12 is provided with a rear clamping groove for accommodating the tail clamping block 121, and the tail clamping block 121 is connected with the tail core rod 132 of the central insert 13 through interference fit. In this way, the front end clamping block 111 in the front clamping groove and the tail end clamping block 121 in the rear clamping groove are respectively connected with the front end core rod 131 and the tail end core rod 132 of the central insert 13 through interference fit, so that the central insert 13 is conveniently installed in the injection molding die cavity 101 in the die core, the completion efficiency of injection molding preparation work is improved, the central insert 13 is conveniently separated from the front template 11 and the rear template 12 during demolding, and the demolding efficiency is improved. The outer insert 14 is clamped between the front mold plate 11 and the rear mold plate 12 and is sleeved on the periphery of the central insert 13, an outer edge press ring 141 is arranged on the inner wall of the outer insert 14, and an outer edge ring groove 1411 is arranged on the surface of the outer edge press ring 141 facing the rear mold plate 12. The front mold pressing plate 15 is pressed on the front mold plate 11 and connected with the front mold plate 11 through connecting bolts, and the rear mold pressing plate 16 is attached to the bottom surface of the rear mold plate 12 and connected with the rear mold plate 12 through connecting bolts. In addition, both the front mold plate 15 and the rear mold plate 16 may be formed by a combination of multi-layered plates.
As shown in fig. 2-10, the injection mold for rubber parts of the present invention further comprises a rear mold support, which comprises a bottom plate 171, two support blocks 172, a floating plate 173 and a top rod 174. Wherein the base plate 171 is parallel to the rear molding plate 16 and is connected to the rear molding plate 12 by a link penetrating the rear molding plate 16. Two support blocks 172 are located between the base plate 171 and the rear platen 16, and are disposed opposite to each other on both sides of the floating gap 18 between the base plate 171 and the rear platen 16. Preferably, the free end of the trailing core rod 132 of the central insert 13 is sleeved with a buffer spring 133, and the buffer spring 133 is mounted in a buffer groove 1731 at the bottom of the floating plate 173. Thus, when the mold closing operation is completed in the injection preparation work, the reset speed of the tail end core rod 132 of the central insert 13 can be buffered by the buffer spring 133, and the influence on the injection caused by damage of the tail end core rod 132 of the central insert 13 in the reset process is avoided. Preferably, a positioning nut 134 is sleeved on the free end of the trailing core rod 132 of the central insert 13, and a buffer spring 133 is located between the positioning nut 134 and the floating plate 173. Thus, the buffer spring 133 can be locked on the tail end core rod 132 of the central insert 13 by the positioning nut 134, and the buffer spring 133 is prevented from falling off in the using process to influence the injection molding efficiency. The floating plate 173 is located in the floating gap 18, and the floating plate 173 is provided with a stepped slot (not shown) into which the free end of the trailing core pin 132 of the central insert 13 is inserted to capture the free end of the trailing core pin 132 of the central insert 13 in the stepped slot. Preferably, the base plate 171 is provided with a return guide post 19, and a free end of the return guide post 19 is inserted into a return guide hole (not shown) at the bottom of the floating plate 173. Thus, when the floating plate 173 is reset, the reset guide post 19 can be used to guide the reset of the floating plate 173, thereby preventing the floating plate 173 from being dislocated during the reset and even damaging the central insert 13. The lower end of the ejector rod 174 is inserted into the floating plate 173, and the upper end of the ejector rod 174 passes through the rear mold platen 16 and the rear mold platen 12 and abuts against the bottom surface of the outer insert 14 attached to the rear mold platen 12. Preferably, the lift pins 174 are sleeved with return buffer springs 176, the lower ends of the return buffer springs 176 abut against the floating plate 173, and the upper ends of the return buffer springs 176 penetrate through the rear platen 16 and abut against the return grooves 122 of the rear platen 12. Like this, when the compound die resets, usable buffer spring 176 that resets cushions the inertia that produces when front template 11, preceding moulded board 15 and outer insert 13 reset, slows down the speed of resetting of front template 11, preceding moulded board 15 and outer insert 13, avoids this injection mold to receive the damage when the compound die resets, prolongs the utility model discloses the injection mold's of rubber spare life. Preferably, a stem guide 177 is connected to a lower end of the stem 174, a stem stopper 1771 is provided on the stem guide 177 penetrating through a lower end of the floating plate 173, and the stem stopper 1771 is engaged with a bottom surface of the floating plate 173 and inserted into the reset hole 1711 of the base plate 171. Thus, when the push rod 174 is reset, the push rod guide column 177 guides the reset of the push rod 174, thereby facilitating the reset of the push rod 174. After the mold is opened, when the floating plate 173 is lifted toward the rear mold plate 12, the floating plate 173 pushes the center insert 13 toward the front mold plate 11, and the upper end of the ejector 174 pushes the outer insert 14 away from the rear mold plate 12. Thus, after the mold is opened, the floating plate 173 is lifted towards the direction of the rear mold plate 12, the floating plate 173 pushes the central insert 13 to move towards the direction of the front mold plate 11, and simultaneously the upper end of the ejector rod 174 pushes the outer insert 14 away from the rear mold plate 12, so that the injection molding personnel can conveniently take the rubber part 2 formed by injection molding from the central insert 13, the demolding efficiency is improved, the production efficiency of the rubber part is improved, and the production cost of the rubber part is reduced. Preferably, a support column 175 for supporting the rear molding plate 16 is disposed between the base plate 171 and the rear molding plate 16, and the support column 175 is fixed to the base plate 171 and passes through the floating plate 173. Thus, the support column 175 is used to cooperate with the support block 172 to support the mold core, the front mold pressing plate 15 and the rear mold pressing plate 16, so as to improve the support stability, and the support column 175 is used to guide the up-and-down movement of the floating plate 173.
Adopt the utility model discloses when the injection mold of rubber spare was moulded plastics and is formed the rubber spare, the outer fringe clamping ring that utilizes outer mold insert and the outer fringe clamping ring forms the outer fringe of rubber spare on the outer fringe annular cooperation back template on the face of back template, can avoid appearing the PL line in the outer fringe department of rubber spare to can cancel the secondary treatment operation for getting rid of the PL line implementation, simplify the production step of rubber spare, improve the production efficiency of rubber spare, reduce the manufacturing cost of rubber spare. In addition, when the mold is opened, the front mold plate is pulled by the front mold pressing plate to separate the front mold plate from the outer mold insert, so that the mold is opened conveniently and quickly.
Claims (9)
1. The injection mold for the rubber part is characterized by comprising a front template, a rear template, a central insert, an outer insert, a front mold pressing plate and a rear mold pressing plate, wherein the front template and the rear template are buckled with each other to form a mold core, and an injection mold cavity is formed in the mold core; the central insert is arranged in the injection mold cavity, the core bar at the front end of the central insert is clamped on the front template, and the core bar at the tail end of the central insert is clamped in the rear template; the outer insert is clamped between the front template and the rear template and sleeved on the periphery of the central insert, an outer edge pressing ring is arranged on the inner wall of the outer insert, and an outer edge ring groove is formed in the surface, facing the rear template, of the outer edge pressing ring; the front mould pressing plate is pressed on the front mould plate and is connected with the front mould plate through a connecting bolt, and the rear mould pressing plate is attached to the bottom surface of the rear mould plate and is connected with the rear mould plate through a connecting bolt.
2. The injection mold for the rubber part according to claim 1, wherein a front clamping groove for accommodating a front clamping block is formed in the top of the front mold plate, and the front clamping block is connected with a front core rod of the central insert in an interference fit manner; the bottom of the rear template is provided with a rear clamping groove for accommodating a tail end clamping block, and the tail end clamping block is connected with the tail end core rod of the central insert in an interference fit manner.
3. The injection mold for rubber parts according to claim 1 or 2, further comprising a rear mold support, wherein the rear mold support comprises a bottom plate, two support blocks, a floating plate and a top rod, the bottom plate is parallel to the rear mold platen and is connected with the rear mold platen through a connecting rod penetrating through the rear mold platen; the two support blocks are positioned between the bottom plate and the rear molding press plate and are oppositely arranged at two sides of a floating gap between the bottom plate and the rear molding press plate; the floating plate is positioned in the floating gap and is provided with a stepped slotted hole inserted with the free end of the tail end core rod of the central insert; the lower end of the ejector rod is inserted on the floating plate, and the upper end of the ejector rod penetrates through the rear die pressing plate and the rear die plate and abuts against the bottom surface of the outer insert; when the floating plate is lifted towards the rear template, the floating plate pushes the central insert to move towards the front template, and the upper end of the ejector rod pushes the outer insert away from the rear template.
4. The injection mold for rubber parts according to claim 3, wherein a buffer spring is sleeved on the free end of the tail end core rod of the central insert, and the buffer spring is installed in a buffer groove at the bottom of the floating plate.
5. The injection mold for rubber parts according to claim 4, wherein a positioning nut is sleeved on the free end of the tail end core rod of the central insert, and the buffer spring is located between the positioning nut and the floating plate.
6. An injection mold for rubber members as defined in claim 3, wherein a support pillar for supporting said rear platen is provided between said bottom plate and said rear platen, and said support pillar is fixed to said bottom plate and penetrates said floating plate.
7. An injection mold for rubber members as claimed in claim 3, wherein said bottom plate is provided with a return guide post, the free end of which is inserted into a return guide hole at the bottom of said floating plate.
8. An injection mold for rubber parts according to claim 3, wherein said ejector rod is sleeved with a return buffer spring, the lower end of said return buffer spring abuts against said floating plate, and the upper end of said return buffer spring passes through said rear platen and abuts against a return groove on said rear platen.
9. An injection mold for rubber member as claimed in claim 8, wherein a pin guide post is connected to a lower end of said pin, and a lower end of said pin guide post is provided with a stopper penetrating through a lower end of said floating plate, and said stopper is fitted to a bottom surface of said floating plate and inserted into said reset hole of said bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922283807.1U CN211467286U (en) | 2019-12-18 | 2019-12-18 | Injection mold of rubber spare |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922283807.1U CN211467286U (en) | 2019-12-18 | 2019-12-18 | Injection mold of rubber spare |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211467286U true CN211467286U (en) | 2020-09-11 |
Family
ID=72371678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922283807.1U Active CN211467286U (en) | 2019-12-18 | 2019-12-18 | Injection mold of rubber spare |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211467286U (en) |
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2019
- 2019-12-18 CN CN201922283807.1U patent/CN211467286U/en active Active
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