CN210233854U - Retractable long slide block core positioning and supporting mechanism on medical injection mold - Google Patents
Retractable long slide block core positioning and supporting mechanism on medical injection mold Download PDFInfo
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- CN210233854U CN210233854U CN201920995983.5U CN201920995983U CN210233854U CN 210233854 U CN210233854 U CN 210233854U CN 201920995983 U CN201920995983 U CN 201920995983U CN 210233854 U CN210233854 U CN 210233854U
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Abstract
The utility model relates to a last retractable long slider core location supporting mechanism of medical injection mold, including front mould shifting block, slider, flexible pilot pin, long slider core, the front mould shifting block is fixed in the bottom of front mould board and shifts up or move down along with it, front mould shifting block and slider sliding connection, reciprocating linear motion is made along the direction of perpendicular to front mould shifting block central line to front mould shifting block drive slider, slider sliding connection is in the back template, the slider with flexible pilot pin sliding connection, the slider is making reciprocating linear motion in the flexible pilot pin of drive and reciprocates along self axis direction. The utility model discloses a support of flexible pilot pin to long slider core when moulding plastics guarantees that long slider core is stable in the tram when moulding plastics, does not produce the bending to the homogeneity of product circumference wall thickness has been guaranteed, product quality is improved.
Description
Technical Field
The utility model relates to a medical product technical field, concretely relates to last retractable long slide block core positioning support mechanism of medical injection mold.
Background
Plastic products such as syringes, handles and the like generally have long-distance deep cavity structures and light transmission requirements due to self functions and structural characteristics. The product of the type has extremely high requirements on the appearance, and has extremely precise requirements on the size of a deep cavity due to the functional requirements of sealing and the like. The current common solutions are generally to stiffen the long slider core or to strengthen fixed positioning support structures in the middle. The structure has a good application effect on the injection molding products with low requirements on common precision, but the high-precision products, especially medical grade injection molding products, can not meet the use requirements. The repeated positioning precision is poor, and the sliding structure is strained or even blocked in long-term production. The problems that the surface of a transparent product is damaged by pulling, the wall thickness is uneven and the size precision cannot be guaranteed are solved, the wall thickness is uneven because the length of the long sliding block core is too long, the long sliding block core can be slightly bent under the gravity of the long sliding block core, the wall thickness of a long-distance deep cavity is uneven, the quality and the production efficiency of an injection molding product are seriously affected, and the problems exist in the case of a produced transparent medical product which is a pressure pump jacket.
SUMMERY OF THE UTILITY MODEL
For solving the problem that prior art exists, the utility model provides a long slider core positioning support mechanism of retractable on medical injection mold, through the support of flexible pilot pin to long slider core when moulding plastics, guarantee that long slider core is stable in the tram when moulding plastics, do not produce the bending to the homogeneity of product circumference wall thickness has been guaranteed, product quality is improved.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a long slider core location supporting mechanism of retractable on medical injection mold, includes front mould shifting block, slider, flexible pilot pin, long slider core, the front mould shifting block is fixed in the bottom of front mould board and moves up or move down along with it, front mould shifting block and slider sliding connection, front mould shifting block drive slider is along the direction of perpendicular to front mould shifting block central line reciprocating linear motion, slider sliding connection is on the back template, the slider with flexible pilot pin sliding connection, the slider drives flexible pilot pin and reciprocates along self axis direction in doing reciprocating linear motion, flexible pilot pin can inject the type of moulding plastics intracavity under the slider drive, the one end and the hydro-cylinder of long slider core are connected, stretch into the type of moulding plastics intracavity and contact with the top of flexible pilot pin under the hydro-cylinder drive.
Preferably, an inverted quadrangular pyramid block and an insert block with an inclined structure are fixed at the bottom of the front mold shifting block, an inclined slot is formed between the insert block and the inverted quadrangular pyramid block, a through hole capable of enabling the insert block to be inserted is formed in the top of one end, close to the front mold shifting block, of the sliding block, and when the insert block is inserted into the through hole, the side wall of one end of the sliding block is attached to one side wall of the quadrangular pyramid block.
In any of the above aspects, preferably, the insert block is inserted into or pulled out of the through hole to drive the slider to perform reciprocating linear motion.
In any of the above aspects, preferably, an inclination angle of the center line of the through hole is the same as an inclination angle of the insert block.
In any of the above schemes, preferably, the number of the insert blocks is two, and the insert blocks are symmetrically distributed along the vertical center line of the inverted quadrangular pyramid block.
In any of the above schemes, preferably, the vertical center line of the inverted quadrangular pyramid block coincides with the center line of the upper die deflector rod.
In any of the above schemes, preferably, the two sides of the front module shifting block are respectively provided with the sliding blocks matched with the inserting blocks.
In any of the above schemes, preferably, a side wall of one end of the slider, which is far away from the upper die shift lever, is provided with a clamping groove which is inclined and extends towards the upper die shift lever, the bottom surface of the clamping groove is an inclined plane, the top of the clamping groove is provided with a clamping hole, a needle seat of the telescopic positioning needle is positioned in the clamping groove and is in sliding fit with the bottom surface of the clamping groove, and a needle head of the telescopic positioning needle extends out of the clamping hole and can extend into an injection molding cavity under the driving of the slider.
In any of the above schemes, preferably, the rear mold plate is provided with a lower mold core, and the slide block is located in a cavity formed by the rear mold plate and the lower mold core.
In any of the above schemes, preferably, a positioning block is fixed on the rear template at one side of the slide block, the slide block is connected to the rear template through the positioning block, a wear-resistant sheet is fixed on the rear template below the slide block, and the slide block slides on the wear-resistant sheet.
Compared with the prior art, the utility model provides a long slider core positioning support mechanism of retractable on the medical injection mold has following beneficial effect:
1. by arranging the long slide block core positioning and supporting mechanism, the telescopic positioning needle can be withdrawn from the injection molding cavity when the mold is opened, so that the abrasion of the mold and the pulling damage of the product caused by the friction between the telescopic positioning needle and the long slide block core are prevented, the telescopic positioning needle can be ejected out and extended into the injection molding cavity when the mold is closed and is contacted with and supported by the long slide block core, so that the long slide block core is kept at the correct position when the mold is injected, the bending caused by the gravity of the long slide block core is avoided, the uniform wall thickness of the circumference of the product is ensured, the repeated positioning precision of the mold is improved, the unnecessary abrasion and collision are reduced, the product quality and the service life of the mold are greatly improved, the injection molding;
2. two sliders can be driven to move through a front mold shifting block, two injection molding products can be simultaneously supported, two products can be formed at one time, and production efficiency is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of a preferred embodiment of a retractable long-slider core positioning and supporting mechanism of a medical injection mold according to the present invention;
FIG. 2 is an exploded view of the embodiment of FIG. 1;
FIG. 3 is an exploded view of the embodiment of FIG. 1 in perspective;
FIG. 4 is a perspective view of the embodiment of FIG. 1;
FIG. 5 is a perspective view of the embodiment of FIG. 1 from another angle;
FIG. 6 is a schematic view of the embodiment of FIG. 1 mounted to a rear deck;
FIG. 7 is a perspective view of the embodiment of FIG. 1 mounted to a rear deck;
FIG. 8 is a perspective view of the slider in the embodiment of FIG. 1;
FIG. 9 is a front view of the embodiment of FIG. 8;
FIG. 10 is a rear perspective view of the slider in the embodiment of FIG. 8;
FIG. 11 is a perspective view of the front module shift block of the embodiment shown in FIG. 1;
FIG. 12 is a rear perspective view of the embodiment of FIG. 11;
fig. 13 is a schematic structural view of the connection between the front module shifting block and the sliding block in the embodiment shown in fig. 1.
The figures are labeled as follows: 1. a front module shifting block; 2. a long slider core; 3. a telescopic positioning needle; 4. a slider; 5. a wear resistant sheet; 6. inserting a block; 7. a reverse quadrangular pyramid block; 8. a lower die core; 9. a slot; 10. a through hole; 11. injection molding a cavity; 12. a guide hole; 13. a clamping groove; 14. positioning blocks; 15. and (7) a rear template.
Detailed Description
In order to further understand the inventive content of the present invention, the present invention will be explained in detail with reference to the specific embodiments.
As shown in fig. 1-13, an embodiment of a retractable long-slider core positioning and supporting mechanism on a medical injection mold according to the present invention comprises a front mold shifting block 1, a slider 4, a retractable positioning pin 3, and a long slider 4 core 2, wherein the front mold shifting block 1 is fixed at the bottom of a front mold plate and moves up or down along with the front mold plate, the front mold shifting block 1 is slidably connected with the slider 4, the front mold shifting block 1 drives the slider 4 to make a reciprocating linear motion along a direction perpendicular to a central line of the front mold shifting block 1, the slider 4 is slidably connected to a rear mold plate 15, the slider 4 is slidably connected with the retractable positioning pin 3, the slider 4 drives the retractable positioning pin 3 to move up and down along an axis direction of the slider 4 during the reciprocating linear motion, the retractable positioning pin 3 can be inserted into an injection mold cavity 11 under the driving of the slider 4, one end of the long slider 4 core 2 is connected with an oil cylinder, the telescopic positioning needle extends into the injection molding cavity 11 under the driving of an oil cylinder and is contacted with the top of the telescopic positioning needle 3.
An inverted rectangular pyramid block 7 and an insert block 6 with an inclined structure are fixed at the bottom of the front die shifting block 1, an inclined slot 9 is formed between the insert block 6 and the inverted rectangular pyramid block, a through hole 10 enabling the insert block 6 to be inserted is formed in the top of one end, close to the front die shifting block 1, of the sliding block 4, and when the insert block 6 is inserted into the through hole 10, the side wall of one end of the sliding block 4 is attached to one side wall of the rectangular pyramid block. Specifically, one sidewall of the through hole 10 is an opening structure.
The insert block 6 is inserted into or pulled out of the through hole 10 to drive the slide block 4 to do reciprocating linear motion. Namely, when the front module shifting block 1 drives the inserting block 6 to be inserted into or pulled out of the through hole 10, the sliding block 4 makes reciprocating linear motion towards the direction close to or far away from the front module shifting block 1. The insert block 6 and the front module shifting block 1 are of an integral structure.
The inclination angle of the central line of the through hole 10 is the same as that of the insert block 6, so that when the insert block 6 is pulled out of the through hole 10, the slide block 4 is close to the front die shifting block 1, and when the insert block 6 is inserted into the through hole 10, the slide block 4 moves away from the front die shifting block 1.
The number of the inserting blocks 6 is two, and the inserting blocks are symmetrically distributed along the vertical center line of the inverted quadrangular pyramid block 7, so that two inserting grooves 9 symmetrically distributed along the vertical center line of the inverted quadrangular pyramid block can be formed.
And the vertical center line of the inverted quadrangular pyramid block 7 is superposed with the center line of the upper die deflector rod.
And the two sides of the front module shifting block 1 are respectively provided with the sliding blocks 4 matched with the inserting blocks 6.
The side wall of one end, far away from the upper die driving lever, of the sliding block 4 is provided with a clamping groove 13 which is inclined and extends towards the upper die driving lever, the bottom surface of the clamping groove 13 is an inclined plane, the top of the clamping groove 13 is provided with a clamping hole, a needle seat of the telescopic positioning needle 3 is located in the clamping groove 13 and is in sliding fit with the bottom surface of the clamping groove 13, and a needle head of the telescopic positioning needle 3 extends out of the clamping hole and can extend into the injection molding cavity 11 under the driving of the sliding block 4. The side wall of the clamping hole and the clamping groove 13 on the same side is of an open structure and is communicated with the outside. The needle seat bottom surface of flexible pilot pin 3 is the inclined plane to at slider 4 removal in-process, flexible pilot pin 3 can be made up and down linear motion, and slider 4 when the 1 direction of front mould shifting block of slider 4 motion, slider 4 drive flexible pilot pin 3 along its axis downstream, and slider 4 drives flexible pilot pin 3 along its axis upward movement when the 1 direction of front mould shifting block of keeping away from is being moved to slider 4. The number of the injection molding cavities 11 is the same as that of the sliders 4, and the injection molding cavities 11 correspond to the sliders 4 one by one, and in this embodiment, the number of the injection molding cavities 11 is two, that is, two products are injection molded at one time.
The rear die plate 15 is provided with a lower die core 8, the slider 4 is positioned in a cavity formed by the rear die plate 15 and the lower die core 8, the top of the lower die core 8 and the position corresponding to the telescopic positioning needle 3 are provided with an injection molding cavity 11, the telescopic positioning needle 3 can penetrate through the lower die core 8 under the driving of the slider 4 to extend into the injection molding cavity 11 to be contacted with the bottom of the long slider 4 mold core 2, the position corresponding to the front die shifting block 1 on the lower die core 8 is provided with a guide hole 12 which is communicated with the cavity and can enable the front die shifting block 1 to be inserted, and the front die shifting block 1 is inserted into the guide hole 12 and drives the slider 4 to move.
The bottom of the front template is fixed with an upper mold core at the position corresponding to the lower mold core 8, and an integral injection molding cavity 11 of an injection molding product is formed between the upper mold core and the lower mold core 8. The long slide block 4 mold core 2 extends into the injection molding cavity 11 under the driving of an oil cylinder, and the oil cylinder is positioned on one side of the rear mold plate 15.
The telescopic positioning needle 3 is always kept in a vertical state in the up-and-down moving process.
A positioning block 14 is fixed on a rear template 15 on one side of the sliding block 4, the sliding block 4 is connected to the rear template 15 through the positioning block 14, a wear-resistant sheet 5 is fixed on the rear template 15 below the sliding block 4, and the sliding block 4 slides on the wear-resistant sheet 5. Specifically, a sliding groove with a T-shaped cross section is formed in one side wall of the slider 4, one end of the sliding groove is of an open structure, one end of the positioning block 14 is locked in the sliding groove through the opening, so that the slider 4 can slide while being connected with the positioning block 14, and the slider 4 is prevented from falling off from the rear template 15.
It needs to be said here, actuating mechanism is connected to the front mould board can reciprocate and realize die sinking and compound die, and back template is in the stationary state, the utility model discloses what protect is long slider core location supporting mechanism, and not improve the structure of front mould board and back template to the ejecting of injection molding machine drive ejector pin also does not improve, not the utility model discloses a protection point, compound die and die sinking and the actuating mechanism of front mould board are known to technical personnel in the field simultaneously, and actuating mechanism can hydraulic cylinder drive for example, therefore, no longer gives detailed description here.
The working principle of the embodiment is as follows: after the mold is injected by an injection molding machine, a product is formed in an injection molding cavity in the mold, firstly, through a first section of mold opening action, a front mold plate drives a front mold shifting block to move upwards under the action of a driving mechanism, an inserting block on the front mold shifting block is gradually pulled out from a through hole, sliding blocks on two sides are driven to move towards the direction close to the front mold shifting block in the pulling-out process, and a telescopic positioning needle on the sliding block is driven to move downwards simultaneously in the moving process of the sliding block to be separated from the contact with a long sliding block mold core; then the long sliding block mold core is driven by an external oil cylinder to be drawn back from the injection molding cavity and separated from the product; then, carrying out a second-stage mold opening action, and finishing the ejection action of the product under the pushing of an ejector rod of the injection molding machine after the long slide block mold core is separated from the product; then the long slide block mold core is reset under the pushing of the external oil cylinder, returns to the mold closing preparation position and starts the mold closing action. When the mold is closed, the slide block moves towards the direction far away from the front mold shifting block under the pushing of the front mold shifting block, and meanwhile, the telescopic positioning needle is driven to move upwards to finally prop against the long slide block mold core so as to support the long slide block mold core to be always in the correct position (the state is shown in figure 1) in the next injection molding period, and the casting can be carried out after the mold closing is finished.
Compared with the prior art, the embodiment has the following beneficial effects:
through setting up long slider core location supporting mechanism, can let flexible pilot pin take out from the type cavity of moulding plastics when the die sinking retreat, prevent that it from producing the friction with long slider core and causing mould wearing and tearing and product strain, can make flexible pilot pin ejecting the type cavity of moulding plastics that stretches into when the compound die again, contact and support with long slider core, make long slider core keep in the tram when moulding plastics, avoid taking place the bending because of self gravity, it is even with the wall thickness of guaranteeing the product circumference, improve the repeated positioning accuracy of mould, reduce unnecessary wearing and tearing and collision, product quality and mould life are greatly improved, and it is more stable to enable injection moulding production, thereby improve production efficiency.
It will be understood by those skilled in the art that any combination of the elements of the present invention, including the summary and detailed description of the invention provided in the foregoing description and illustrated in the accompanying drawings, is not to be considered limiting in scope and in order to make the description more concise, and not to describe every element of the combination. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a long slider core positioning support mechanism of retractable on medical injection mold which characterized in that: the mold comprises a front mold shifting block, a sliding block, a telescopic positioning needle and a long sliding block mold core, wherein the front mold shifting block is fixed at the bottom of a front mold plate and moves up or down along with the front mold plate, the front mold shifting block is in sliding connection with the sliding block, the front mold shifting block drives the sliding block to do reciprocating linear motion along the direction perpendicular to the central line of the front mold shifting block, the sliding block is in sliding connection with a rear mold plate, the sliding block is in sliding connection with the telescopic positioning needle, the sliding block drives the telescopic positioning needle to move up and down along the axis direction of the sliding block in reciprocating linear motion, the telescopic positioning needle can be inserted into an injection mold cavity under the driving of the sliding block, one end of the long sliding block mold core is connected with an oil cylinder, and the long sliding block mold core extends into the.
2. The retractable long slide core positioning and supporting mechanism on the medical injection mold according to claim 1, wherein: the bottom of the front die shifting block is fixedly provided with an inverted quadrangular pyramid block and an inserting block with an inclined structure, an inclined inserting groove is formed between the inserting block and the inverted quadrangular pyramid block, the top of one end, close to the front die shifting block, of the sliding block is provided with a through hole which can enable the inserting block to be inserted, and when the inserting block is inserted into the through hole, the side wall of one end of the sliding block is attached to one side wall of the quadrangular pyramid block.
3. The retractable long slide core positioning and supporting mechanism of the medical injection mold according to claim 2, wherein: the insert block is inserted into or pulled out of the through hole to drive the slide block to do reciprocating linear motion.
4. The retractable long slide core positioning and supporting mechanism of the medical injection mold according to claim 2, wherein: the inclination angle of the central line of the through hole is the same as that of the insertion block.
5. The retractable long slide core positioning and supporting mechanism of the medical injection mold according to claim 2, wherein: the number of the insert blocks is two, and the insert blocks are symmetrically distributed along the vertical center line of the inverted quadrangular pyramid block.
6. The retractable long slide core positioning and supporting mechanism of the medical injection mold according to claim 2, wherein: and the vertical central line of the inverted quadrangular pyramid block is superposed with the central line of the upper die deflector rod.
7. The retractable long slide core positioning and supporting mechanism of the medical injection mold according to claim 5, wherein: and the two sides of the front module shifting block are respectively provided with the sliding blocks matched with the inserting blocks.
8. The retractable long slide core positioning and supporting mechanism on the medical injection mold according to claim 1, wherein: the side wall of one end, away from the upper die driving lever, of the sliding block is provided with a clamping groove which is inclined and extends towards the upper die driving lever, the bottom surface of the clamping groove is an inclined plane, the top of the clamping groove is provided with a clamping hole, a needle seat of the telescopic positioning needle is located in the clamping groove and is in sliding fit with the bottom surface of the clamping groove, and a needle head of the telescopic positioning needle extends out of the clamping hole and can extend into an injection molding cavity under the driving of the sliding block.
9. The retractable long slide core positioning and supporting mechanism on the medical injection mold according to claim 1, wherein: the rear die plate is provided with a lower die core, and the sliding block is positioned in a cavity formed by the rear die plate and the lower die core.
10. The retractable long slide core positioning and supporting mechanism on the medical injection mold according to claim 1, wherein: the rear template at one side of the sliding block is fixedly provided with a positioning block, the sliding block is connected to the rear template through the positioning block, the rear template below the sliding block is fixedly provided with a wear-resistant sheet, and the sliding block slides on the wear-resistant sheet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920995983.5U CN210233854U (en) | 2019-06-28 | 2019-06-28 | Retractable long slide block core positioning and supporting mechanism on medical injection mold |
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| CN201920995983.5U CN210233854U (en) | 2019-06-28 | 2019-06-28 | Retractable long slide block core positioning and supporting mechanism on medical injection mold |
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| CN210233854U true CN210233854U (en) | 2020-04-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113580506A (en) * | 2021-08-16 | 2021-11-02 | 深圳市精诚塑胶模具有限公司 | Injection molding device and method for preventing core deformation of elongated tubular plastic product |
-
2019
- 2019-06-28 CN CN201920995983.5U patent/CN210233854U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113580506A (en) * | 2021-08-16 | 2021-11-02 | 深圳市精诚塑胶模具有限公司 | Injection molding device and method for preventing core deformation of elongated tubular plastic product |
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| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: No.10 Yuanhe Road, Wuqing District, Tianjin Patentee after: Tianjin dimak Pharmaceutical Technology Co.,Ltd. Address before: 2 / F, No.4 workshop, No.6 Xinchuang Road, Wuqing District, Tianjin Patentee before: Tianjin Secco Kell Technology Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.10 Yuanhe Road, Wuqing District, Tianjin Patentee after: Tianjin Demak Medical Instrument Co.,Ltd. Address before: No.10 Yuanhe Road, Wuqing District, Tianjin Patentee before: Tianjin dimak Pharmaceutical Technology Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |