CN210308862U - Ejection mechanism stopping first - Google Patents
Ejection mechanism stopping first Download PDFInfo
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- CN210308862U CN210308862U CN201920876536.8U CN201920876536U CN210308862U CN 210308862 U CN210308862 U CN 210308862U CN 201920876536 U CN201920876536 U CN 201920876536U CN 210308862 U CN210308862 U CN 210308862U
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- auxiliary
- ejection mechanism
- ejector pin
- plate
- stop
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Abstract
The utility model relates to the field of dies, in particular to an ejection mechanism which stops firstly, wherein a die body is provided with a bottom plate, a cushion block and a movable template, the ejection mechanism comprises a main ejection mechanism, an auxiliary thimble and an auxiliary ejection mechanism, and the main ejection mechanism comprises an upper thimble plate, a lower thimble plate and a main thimble fixed on the upper thimble plate; the bottom of the auxiliary ejector pin is fixedly connected with the auxiliary ejection mechanism, and the top of the auxiliary ejector pin sequentially penetrates through the lower ejector pin plate, the upper ejector pin plate and the movable template and then is contacted with the injection molding piece; in the mold opening process, after the auxiliary ejector pin moves upwards for a set distance under the action of the auxiliary ejection mechanism, the auxiliary ejector pin stops moving under the limitation of the auxiliary ejection mechanism, and then the main ejector pin continues moving upwards. The utility model discloses when the die sinking, supplementary thimble earlier with the injection molding rebound certain distance after again with special muscle position, the post separation that have certain packing power, can effectively avoid injection molding adhesion ejection mechanism, can also effectively avoid the muscle position, the post of injection molding to take place to warp.
Description
Technical Field
The utility model belongs to the technical field of the mould and specifically relates to an ejection mechanism who stops earlier.
Background
Injection molding is an important plastic material processing method and is widely applied to various products such as automobiles, office supplies, daily necessities, toys, medical treatment, even aerospace and the like. Many products need to set up some simple and special muscle positions, post position because of function or molding demand, and these special muscle positions, post position have certain package power, do not set up ejection mechanism and can lead to the product to take place to warp when ejecting, set up ordinary ejection mechanism and can lead to product adhesion ejection mechanism, set up second grade ejection mechanism and can lead to the mould structure to be on the contrary complicated, economic inadequately. Even though some molds are manufactured, slight local ejection deformation is found in trial production, which has a very adverse effect on production efficiency and cost. The die has limited improvement space, and the lower the die change cost is, the better the die change cost is.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that special rib position, the post position that has certain binding power adhere ejection mechanism easily when ejecting, the utility model provides an ejection mechanism that stops earlier through setting up supplementary ejection mechanism supplementary ejecting special rib position, the post position that has certain binding power, can effectively avoid taking place deformation, adhesion scheduling problem.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides an ejection mechanism who stops earlier, mould includes the mould body, the mould body has bottom plate (11), cushion (12) and movable mould board (13), its characterized in that: comprises that
The main ejection mechanism comprises an upper ejector plate, a lower ejector plate and a main ejector pin fixed on the upper ejector plate;
an auxiliary thimble; and
an auxiliary ejection mechanism;
the bottom of the auxiliary ejector pin is fixedly connected with the auxiliary ejection mechanism, and the top of the auxiliary ejector pin sequentially penetrates through the lower ejector pin plate, the upper ejector pin plate and the movable template and then is contacted with the injection molding piece;
in the mold opening process, after the auxiliary ejector pin moves upwards for a set distance under the action of the auxiliary ejection mechanism, the auxiliary ejector pin stops moving under the limitation of the auxiliary ejection mechanism, and then the main ejector pin continues moving upwards.
Specifically, the auxiliary ejection mechanism comprises a connecting block, an equal-height screw and an ejection spring sleeved on the equal-height screw, the upper part of the connecting block is fixedly connected with the auxiliary ejector pin, and the lower part of the connecting block is fixedly connected with the equal-height screw;
the lower surface of the bottom plate is provided with a step hole, the equal-height screws sequentially penetrate through the step hole and the ejection springs and then are fixedly connected with the connecting block, and the step hole is provided with a space which is convenient for the screw heads of the equal-height screws to slide up and down.
Specifically, the upper surface of the base plate and/or the lower surface of the lower ejector plate are/is provided with an accommodating groove which is convenient for accommodating the auxiliary ejection mechanism.
Specifically, the ejection mechanism which stops first further comprises a reset mechanism, wherein the reset mechanism comprises a reset rod and a reset spring sleeved on the reset rod; the reset rod is fixed on the upper ejector plate, the stress direction of the reset spring is opposite to that of the auxiliary ejection mechanism, and the elasticity of the reset spring is greater than that of the auxiliary ejection mechanism.
Specifically, a T-shaped groove is formed in the top of the connecting block, and the auxiliary ejector pin is fixed to the connecting block through the T-shaped groove.
Specifically, the upper surface of the upper ejector plate is provided with an ejector limiting block.
Specifically, the upper surface of the bottom plate is provided with a reset limiting block.
Specifically, the ejection mechanism which stops first further comprises a guide mechanism, the guide mechanism comprises a guide pillar and a guide sleeve, the bottom of the guide pillar is fixed on the bottom plate, and the top of the guide pillar penetrates through the guide sleeve embedded in the upper ejector plate and the lower ejector plate.
Specifically, the movable template is provided with a blind hole, and the top of the guide pillar penetrates through the guide sleeve and then is inserted into the blind hole.
The utility model has the advantages that: the utility model is provided with the auxiliary ejector pin and the auxiliary ejection mechanism, in the mold opening process, the auxiliary ejector pin moves upwards under the action of the auxiliary ejection mechanism for a set distance and stops moving, then the main ejector pin continues moving upwards, the auxiliary ejector pin moves upwards for a certain distance along with the injection molding piece and then is separated from the special rib position and the column position with a certain wrapping force, the injection molding piece can be effectively prevented from being adhered to the ejection mechanism, and the deformation of the rib position and the column position of the injection molding piece can be effectively avoided; the utility model discloses simple structure is convenient for improve current mould.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural view of the present invention at the time of mold closing.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is an enlarged view of a portion B in fig. 1.
Fig. 4 is a schematic structural view of the auxiliary thimble when the auxiliary thimble stops moving.
Fig. 5 is an enlarged view of a portion C in fig. 4.
Fig. 6 is an enlarged view of a portion D in fig. 4.
Fig. 7 is a schematic view of the final pick position.
Fig. 8 is an enlarged view of a portion E in fig. 7.
Fig. 9 is an enlarged view of portion F in fig. 7.
Fig. 10 is a schematic view of fig. 8 without the auxiliary ejection mechanism and the auxiliary ejector pin.
In the figure: a base plate; 111. a stepped bore; 112. a reset limiting block; 12. cushion blocks; 13. moving the template; 21. an upper ejector plate; 22. a lower ejector plate; 23. a main thimble; 24. ejecting out a limiting block; 3. an auxiliary thimble; 41. connecting blocks; 42. an equal-height screw; 43. ejecting a spring; 44. accommodating grooves; 51. a reset lever; 52. a return spring; 61. a guide post; 62. a guide sleeve; 9. an injection molded part; h1. the height of the screw heads of the equal-height screws; h2. the depth of the coarser hole in the stepped bore.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
The mould comprises a mould body having a base plate 11, a spacer 12 and a moving platen 13.
As shown in fig. 1 to 9, the first-stop ejector mechanism includes a main ejector mechanism, an auxiliary ejector pin 3, and an auxiliary ejector mechanism, and the main ejector mechanism includes an upper ejector pin plate 21, a lower ejector pin plate 22, and a main ejector pin 23 fixed to the upper ejector pin plate 21; the bottom of the auxiliary ejector pin 3 is fixedly connected with the auxiliary ejector mechanism, and the top of the auxiliary ejector pin passes through the lower ejector plate 22, the upper ejector plate 21 and the movable template 13 in sequence and then contacts with the injection molding piece 9; in the mold opening process, after the auxiliary ejector pin 3 moves upwards for a set distance under the action of the auxiliary ejection mechanism, the movement is stopped under the limitation of the auxiliary ejection mechanism, and then the main ejector pin 23 continues to move upwards.
The auxiliary ejector pins 3 firstly move upwards for a set distance along with the injection molding part 9, then stop moving under the limitation of the auxiliary ejector mechanisms, the main ejector pins 23 continue to move upwards, the auxiliary ejector pins 3 are separated from the injection molding part 9 in the process that the main ejector pins 23 continue to move upwards, and the injection molding part 9 can be taken down after the main ejector pins 23 stop moving. The auxiliary ejector pin 3 is firstly demolded together with the injection molding part 9, so that the adhesion of the rib position and the column position of the injection molding part 9 to the ejector pin can be effectively avoided, and the deformation of the rib position and the column position can be avoided.
As shown in fig. 1-3 and fig. 10, the auxiliary ejection mechanism includes a connecting block 41, an equal-height screw 42, and an ejection spring 43 sleeved on the equal-height screw 42, the upper portion of the connecting block 41 is fixedly connected with the auxiliary ejector pin 3, and the lower portion is fixedly connected with the equal-height screw 42; the lower surface of the bottom plate 11 is provided with a step hole 111, the equal-height screw 42 sequentially passes through the step hole 111 and the ejecting spring 43 and then is fixedly connected with the connecting block 41, and the step hole 111 has a space for facilitating the screw head of the equal-height screw 42 to slide up and down. As shown in fig. 2, the depth h2 of the thicker hole in the stepped hole 111 for accommodating the screw head is greater than the height h1 of the screw head, so that the screw head can slide up and down in the stepped hole 111.
As shown in fig. 10, the upper surface of the base plate 11 and/or the lower surface of the lower ejector plate 22 has a receiving groove 44 for receiving the auxiliary ejector mechanism. In the mold clamping condition, the connecting block 41 of the auxiliary ejection mechanism is placed in the accommodating groove 44. The setting can save space and is more suitable for narrow space inside the die. In the embodiment, it is preferable that the receiving groove 44 is provided at the same time on the upper surface of the base plate 11 and the lower surface of the lower ejector plate 22.
As shown in fig. 1, the ejection mechanism which stops first further includes a reset mechanism, the reset mechanism includes a reset rod 51 and a reset spring 52 which is sleeved on the reset rod 51; the reset rod 51 is fixed on the upper ejector plate 21, the stress direction of the reset spring 52 is opposite to that of the auxiliary ejection mechanism, and the elastic force of the reset spring 52 is larger than that of the auxiliary ejection mechanism.
Because the stress directions of the return spring 52 and the auxiliary ejection mechanism are opposite, and the elasticity of the return spring 52 is larger, after the ejection action is finished and the injection molding 9 is taken out, the whole ejection mechanism returns to the initial position under the action of the return mechanism, and automatic reset can be realized.
As shown in fig. 2, a T-shaped groove is formed at the top of the connecting block 41, and the auxiliary ejector pin 3 is fixed on the connecting block 41 through the T-shaped groove. The auxiliary ejector pin 3 can directly slide into the connecting block 41 through the T-shaped groove to realize fixation, and is convenient to install and disassemble.
As shown in fig. 1, an ejector stopper 24 is provided on the upper surface of the upper ejector plate 21. In a specific embodiment, the height of the limiting block can be set according to actual ejection requirements.
As shown in fig. 1, a reset limiting block 112 is disposed on the upper surface of the bottom plate 11. The reset limiting block 112 can effectively avoid the influence of substances such as dust deposited in the mold on reset.
As shown in fig. 1, the first-stop ejector mechanism further includes a guide mechanism, the guide mechanism includes a guide post 61 and a guide sleeve 62, the bottom of the guide post 61 is fixed on the bottom plate 11, and the top passes through the guide sleeve 62 embedded in the upper ejector plate 21 and the lower ejector plate 22. The guiding mechanism is arranged to facilitate the accurate operation of the ejection mechanism.
As shown in fig. 1, the movable mold plate 13 is provided with a blind hole, and the top of the guide post 61 is inserted into the blind hole after passing through the guide sleeve 62. The fixing of the guide post 61 is facilitated and the accuracy is improved.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. The utility model provides an ejection mechanism who stops earlier, mould includes the mould body, the mould body has bottom plate (11), cushion (12) and movable mould board (13), its characterized in that: comprises that
The main ejection mechanism comprises an upper ejector plate (21), a lower ejector plate (22) and a main ejector pin (23) fixed on the upper ejector plate (21);
an auxiliary thimble (3); and
an auxiliary ejection mechanism;
the bottom of the auxiliary ejector pin (3) is fixedly connected with the auxiliary ejection mechanism, and the top of the auxiliary ejector pin passes through the lower ejector pin plate (22), the upper ejector pin plate (21) and the movable template (13) in sequence and then is contacted with the injection molding piece (9);
in the mold opening process, the auxiliary ejector pin (3) moves upwards for a set distance under the action of the auxiliary ejection mechanism, then the auxiliary ejector pin is limited by the auxiliary ejection mechanism to stop moving, and then the main ejector pin (23) continues to move upwards.
2. The stop-first ejection mechanism of claim 1, wherein: the auxiliary ejection mechanism comprises a connecting block (41), an equal-height screw (42) and an ejection spring (43) sleeved on the equal-height screw (42), the upper part of the connecting block (41) is fixedly connected with the auxiliary ejector pin (3), and the lower part of the connecting block is fixedly connected with the equal-height screw (42);
the lower surface of the bottom plate (11) is provided with a step hole (111), the equal-height screws (42) sequentially penetrate through the step hole (111) and the ejection spring (43) and then are fixedly connected with the connecting block (41), and the step hole (111) is provided with a space facilitating the up-and-down sliding of screw heads of the equal-height screws (42).
3. The stop-first ejection mechanism of claim 1, wherein: the upper surface of the bottom plate (11) and/or the lower surface of the lower ejector plate (22) is/are provided with accommodating grooves (44) which are convenient for accommodating auxiliary ejection mechanisms.
4. The stop-first ejection mechanism of claim 1, wherein: the reset mechanism comprises a reset rod (51) and a reset spring (52) sleeved on the reset rod (51); the reset rod (51) is fixed on the upper ejector plate (21), the stress direction of the reset spring (52) is opposite to that of the auxiliary ejection mechanism, and the elastic force of the reset spring (52) is greater than that of the auxiliary ejection mechanism.
5. The stop-first ejection mechanism of claim 2, wherein: the top of the connecting block (41) is provided with a T-shaped groove, and the auxiliary ejector pin (3) is fixed on the connecting block (41) through the T-shaped groove.
6. The stop-first ejection mechanism of claim 1, wherein: and an ejection limiting block (24) is arranged on the upper surface of the upper ejector plate (21).
7. The stop-first ejection mechanism of claim 1, wherein: the upper surface of the bottom plate (11) is provided with a reset limiting block (112).
8. The stop-first ejection mechanism of claim 1, wherein: the guide mechanism comprises a guide post (61) and a guide sleeve (62), the bottom of the guide post (61) is fixed on the bottom plate (11), and the top of the guide post passes through the guide sleeve (62) embedded in the upper ejector plate (21) and the lower ejector plate (22).
9. The stop-first ejection mechanism of claim 8, wherein: the movable template (13) is provided with a blind hole, and the top of the guide post (61) penetrates through the guide sleeve (62) and then is inserted into the blind hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920876536.8U CN210308862U (en) | 2019-06-11 | 2019-06-11 | Ejection mechanism stopping first |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920876536.8U CN210308862U (en) | 2019-06-11 | 2019-06-11 | Ejection mechanism stopping first |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210308862U true CN210308862U (en) | 2020-04-14 |
Family
ID=70143176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920876536.8U Active CN210308862U (en) | 2019-06-11 | 2019-06-11 | Ejection mechanism stopping first |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210308862U (en) |
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2019
- 2019-06-11 CN CN201920876536.8U patent/CN210308862U/en active Active
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