CN216100223U - Supplementary ejecting structure of injection mold KO pole - Google Patents
Supplementary ejecting structure of injection mold KO pole Download PDFInfo
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- CN216100223U CN216100223U CN202122122134.9U CN202122122134U CN216100223U CN 216100223 U CN216100223 U CN 216100223U CN 202122122134 U CN202122122134 U CN 202122122134U CN 216100223 U CN216100223 U CN 216100223U
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- injection mold
- swing rod
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Abstract
The utility model relates to the field of injection molds, in particular to an auxiliary ejection structure for a KO rod of an injection mold, which comprises a movable mold base plate, wherein a KO guide sleeve is arranged in the movable mold base plate, a KO column is arranged in the KO guide sleeve, an ejector plate is arranged above the movable mold base plate, the ejector plate comprises an ejector base plate and an ejector panel on the top surface of the ejector base plate, a swing rod is arranged between the movable mold base plate and the ejector base plate, one end of the swing rod is installed on the movable mold base plate through a swing rod seat, the middle part of the swing rod is contacted with the top surface of the KO column, and the other end of the swing rod is contacted with the bottom surface of the ejector plate; according to the utility model, the stress position of the ejector pin plate is changed, so that ejection balance is realized, the mold action is smooth and stable, the service life of the mold is prolonged, and frequent maintenance is reduced.
Description
Technical Field
The utility model relates to the field of injection molds, in particular to an injection mold KO rod auxiliary ejection structure utilizing a lever principle.
Background
Some injection products are when moulding plastics, because injection molding machine KO hole is arranged and the product is not identical, refer to fig. 1, be provided with KO uide bushing 7 in the movable mould bedplate 1 respectively, guide assembly 9, be provided with KO post 8 in the KO uide bushing 7, the top of movable mould bedplate 1 is provided with the thimble board, the thimble board includes thimble bottom plate 4, the thimble panel 3 of 4 top surfaces of thimble bottom plate, the one end of thimble bottom plate 4 and thimble panel 3 is passed through guide assembly 9 and is led, the other end and the KO post 8 of 4 bottom surfaces of thimble bottom plate correspond and arrange, there is KO post 8 unable even top on the thimble board that the product overall arrangement corresponds, there is following technical defect: 1) when the KO column 8 is not positioned in the center of the ejector plate, the phenomenon of uneven stress can be caused by direct ejection, and the failure risks of strain, blocking and the like of the guide assembly 9 are greatly increased; 2) the die needs to be enlarged for ejection balance, so that the KO column is positioned at the stress center of the ejector plate, and the material cost, the processing cost, the carrying cost, the transportation cost and the like of the die are greatly increased; 3) the ejector pin plate is additionally provided with an oil cylinder for ejection, and the cost is extremely high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an auxiliary ejection structure for a KO rod of an injection mold, so as to solve the technical problem.
The technical problem solved by the utility model can be realized by adopting the following technical scheme:
the utility model provides an injection mold KO pole assists ejecting structure, includes the movable mould bedplate, is provided with the KO uide bushing in the movable mould bedplate, is provided with the KO post in the KO uide bushing, and the top of movable mould bedplate is provided with the thimble board, and the thimble board includes thimble bottom plate, the thimble panel of thimble bottom plate top surface, the movable mould bedplate with still be provided with the pendulum rod between the thimble bottom plate, the one end of pendulum rod is passed through the swing rod seat and is installed on the movable mould bedplate, the middle part of pendulum rod and the top surface contact of KO post, the other end and the thimble board bottom surface contact of pendulum rod.
The swing rod seat is fixed on the movable die seat plate and used for supporting the swing rod, and the position of the swing rod seat is on the same straight line connecting the selected stress point and the KO hole; when the power source KO is ejected, the KO column is ejected to the middle part of the swing rod, and the stress point is transferred through the swing rod seat by utilizing the lever principle, so that the stress of the ejector pin plate is uniformly balanced; by changing the stress position of the ejector retainer plate, ejection balance is realized, smooth and stable die action is realized, the service life of the die is prolonged, and frequent maintenance and repair are reduced.
The bottom surface of the thimble bottom plate is provided with a counter bore, the bottom surface of the counter bore is provided with a group of threaded counter bores, an adjusting plate is arranged in the counter bore, the bottom surface of the adjusting plate is provided with a group of stepped holes, the stepped holes and the threaded counter bores are arranged correspondingly, a counter bolt is arranged in each stepped hole, and the counter bolt is screwed with the threaded counter bores;
the adjusting plate is fixed on the ejector plate, and the adjusting plate is easy to damage due to a small amount of friction generated by the rotation of the oscillating bar, is convenient to replace and maintain through the countersunk head bolt, and can also be convenient to adjust the contact surface of the oscillating bar.
A first through hole is formed in one end, connected with the swing rod seat, of the swing rod, a second through hole is formed in the swing rod seat, the second through hole is arranged corresponding to the first through hole, and pins are arranged in the first through hole and the second through hole;
the swing rod is fixed on the swing rod seat through the pin, the motion state of the swing rod is limited, the problem of unbalanced ejection caused by uneven KO hole positions of the injection molding machine is solved, and the mold cost is reduced by mechanical driving.
Drawings
FIG. 1 is a schematic view of a prior art KO rod ejection imbalance configuration.
Fig. 2 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific drawings.
Referring to fig. 2, the auxiliary ejection structure for the KO rod of the injection mold comprises a movable mold base plate 1, a KO guide sleeve 7 is arranged in the movable mold base plate 1, a KO column 8 is arranged in the KO guide sleeve 7, an ejector plate is arranged above the movable mold base plate 1, the ejector plate comprises an ejector base plate 4 and an ejector pin panel 3 on the top surface of the ejector base plate 4, a swing rod 6 is arranged between the movable mold base plate 1 and the ejector pin base plate 4, one end of the swing rod 6 is installed on the movable mold base plate 1 through a swing rod seat 2, the middle part of the swing rod 6 is contacted with the top surface of the KO column 8, and the other end of the swing rod 6 is contacted with the bottom surface of the ejector pin plate; according to the utility model, the KO column is used as a transmission substance of power between the injection molding machine and the KO rod auxiliary ejection structure; the swing rod seat is fixed on the movable die base plate and used for supporting a swing rod, and the position of the swing rod seat is on the same straight line connecting the selected stress point and the KO hole; when the power source KO is ejected, the KO column is ejected to the middle part of the swing rod, and the stress point is transferred through the swing rod seat by utilizing the lever principle, so that the stress of the ejector pin plate is uniformly balanced; by changing the stress position of the ejector retainer plate, ejection balance is realized, smooth and stable die action is realized, the service life of the die is prolonged, and frequent maintenance and repair are reduced.
The bottom surface of the thimble base plate 4 is provided with a counter bore, the bottom surface of the counter bore is provided with a group of threaded counter bores, an adjusting plate 5 is arranged in the counter bore, the bottom surface of the adjusting plate 5 is provided with a group of stepped holes, the stepped holes and the threaded counter bores are arranged correspondingly, countersunk bolts are arranged in the stepped holes, and the countersunk bolts are screwed with the threaded counter bores; the adjusting plate is fixed on the ejector plate, and the adjusting plate is easy to damage due to a small amount of friction generated by the rotation of the oscillating bar, is convenient to replace and maintain through the countersunk head bolt, and can also be convenient to adjust the contact surface of the oscillating bar.
A first boss is arranged on the top surface of the other end of the oscillating bar 6 and is in contact with the bottom surface of the adjusting plate 5; the contact end of the first boss and the adjusting plate 5 is in a semicircular shape; a second boss is arranged on the bottom surface of the middle part of the swing rod 6 and is in contact with the top surface of the KO column 8; the contact end of the second boss and the KO column 8 is semicircular; the utility model adopts the semi-circular shape of the contact end of the first boss and the second boss, thereby avoiding a small amount of error of the ejection stroke caused by a little change of the rotation stress point and ensuring that the ejection is more smooth and accurate.
A first through hole is formed in one end, connected with the swing rod seat 2, of the swing rod 6, a second through hole is formed in the swing rod seat 2, the second through hole is arranged corresponding to the first through hole, and pins are arranged in the first through hole and the second through hole; the oscillating bar is fixed on the oscillating bar seat through the pin, the motion state of the oscillating bar is limited, and whether the stress of the oscillating bar exceeds the safe stress load of the pin needs to be calculated; the oscillating bar rotates by taking the pin as a center, wherein the second boss is a power point, and the first boss is a resistance point; calculating the power required by the power point by adjusting the resistance of the first boss and the length of the swing rod, and ensuring that the power is within the range of ejection force of the injection molding machine; when the power source KO is ejected, the KO column is ejected on the swing rod, the stress point is on the second boss, and the swing rod can only rotate around the pin as the center due to the limitation of the pin of the swing rod seat on the motion state of the swing rod; therefore, the stress point is transferred to the first boss, stress transfer is achieved, ejection imbalance caused by uneven KO hole positions of the injection molding machine is solved, and mold cost is reduced by mechanical driving.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides an injection mold KO pole supplementary ejection structure, includes movable mould bedplate (1), is provided with KO uide bushing (7) in the movable mould bedplate (1), is provided with KO post (8) in KO uide bushing (7), and the top of movable mould bedplate (1) is provided with the thimble board, and the thimble board includes thimble bottom plate (4), thimble panel (3) of thimble bottom plate (4) top surface, its characterized in that, movable mould bedplate (1) and still be provided with between thimble bottom plate (4) and be provided with pendulum rod (6), the one end of pendulum rod (6) is passed through pendulum rod seat (2) and is installed on movable mould bedplate (1), the middle part of pendulum rod (6) and the top surface contact of KO post (8), the other end and the thimble board bottom surface contact of pendulum rod (6).
2. The auxiliary ejection structure of the KO rod of the injection mold according to claim 1, wherein a counter bore is formed in the bottom surface of the ejector pin base plate (4), a set of threaded counter bores are formed in the bottom surface of the counter bore, an adjusting plate (5) is arranged in the counter bore, a set of stepped holes are formed in the bottom surface of the adjusting plate (5), the stepped holes and the threaded counter bores are arranged correspondingly, a countersunk head bolt is arranged in each stepped hole, and the countersunk head bolt is screwed with the threaded counter bores.
3. An injection mold KO rod auxiliary ejection structure as claimed in claim 2, wherein the other end top surface of the swing link (6) is provided with a first boss, and the first boss contacts with the bottom surface of the adjusting plate (5).
4. An injection mold KO rod auxiliary ejection structure as claimed in claim 3, wherein the contact end of the first boss and the adjusting plate (5) is semicircular.
5. An injection mold KO rod auxiliary ejection structure as claimed in claim 1, characterized in that the middle bottom surface of the swing link (6) is provided with a second boss, and the second boss contacts with the top surface of the KO column (8).
6. An injection mold KO rod auxiliary ejection structure as claimed in claim 5, wherein the contact end of the second boss and KO column (8) is semi-circular.
7. An injection mold KO rod auxiliary ejection structure as claimed in claim 1, wherein the swing rod (6) has a first through hole at one end connected with the swing rod seat (2), the swing rod seat (2) has a second through hole arranged corresponding to the first through hole, and pins are arranged in the first through hole and the second through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122122134.9U CN216100223U (en) | 2021-09-03 | 2021-09-03 | Supplementary ejecting structure of injection mold KO pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122122134.9U CN216100223U (en) | 2021-09-03 | 2021-09-03 | Supplementary ejecting structure of injection mold KO pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216100223U true CN216100223U (en) | 2022-03-22 |
Family
ID=80730959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122122134.9U Active CN216100223U (en) | 2021-09-03 | 2021-09-03 | Supplementary ejecting structure of injection mold KO pole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216100223U (en) |
-
2021
- 2021-09-03 CN CN202122122134.9U patent/CN216100223U/en active Active
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