CN223864228U - Lateral self-locking core-pulling structure - Google Patents
Lateral self-locking core-pulling structureInfo
- Publication number
- CN223864228U CN223864228U CN202520523565.1U CN202520523565U CN223864228U CN 223864228 U CN223864228 U CN 223864228U CN 202520523565 U CN202520523565 U CN 202520523565U CN 223864228 U CN223864228 U CN 223864228U
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- CN
- China
- Prior art keywords
- sliding block
- locking
- block
- core
- hydraulic cylinder
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
本实用新型属于汽车注塑模具领域，具体涉及一种侧向自锁抽芯结构，包括抽芯、滑动块组件、锁紧块、压条、油缸和油缸固定块，锁紧块活动安装在滑动块组件后部两侧内且在其中左右移动，油缸固定块一端活动安装在滑动块组件后部中间、另一端与油缸连接，油缸固定块一端在滑动块组件后部中间前后移动，压条设置在滑动块组件两侧边且压条内侧开设有与锁紧块相适配的锁紧面，抽芯一端活动安装在滑动块组件前部下侧中并且随着滑动块组件水平后退，抽芯2斜向上运动。本实用新型在抽芯结构的基础上增加自锁的机械结构，避免了注塑过程中由于压力较大出现后退的情况。
This utility model belongs to the field of automotive injection molds, specifically relating to a side-locking core-pulling structure, including a core puller, a sliding block assembly, a locking block, a pressure strip, a hydraulic cylinder, and a hydraulic cylinder fixing block. The locking block is movably installed on both sides of the rear of the sliding block assembly and moves left and right within it. One end of the hydraulic cylinder fixing block is movably installed in the middle of the rear of the sliding block assembly, and the other end is connected to the hydraulic cylinder. One end of the hydraulic cylinder fixing block moves back and forth in the middle of the rear of the sliding block assembly. The pressure strip is set on both sides of the sliding block assembly, and the inner side of the pressure strip has a locking surface adapted to the locking block. One end of the core puller is movably installed in the lower front of the sliding block assembly, and as the sliding block assembly moves horizontally backward, the core puller moves obliquely upward. This utility model adds a self-locking mechanical structure to the core-pulling structure, preventing backward movement due to high pressure during injection molding.
Description
Technical Field
The utility model belongs to the field of automobile injection molds, and particularly relates to a lateral self-locking core-pulling structure.
Background
The common reversing core-pulling structure is a core-pulling structure driven by an oil cylinder, and as shown in fig. 1, the oil cylinder is in a reversing mode, the oil cylinder is connected with a sliding block, an angle T-shaped sliding groove is arranged on a guide rail on the bottom surface of the sliding block, and core pulling is connected to the T-shaped sliding groove, so that core pulling is completed. When the product is large in back-off quantity and large in projection area, the size of the selected oil cylinder needs to be calculated according to the back-off quantity of the product and the projection area of the product by adopting the mode, when the projection area of the product is too large, the injection molding pressure is large, the common reversing oil cylinder is unlocked, the oil cylinder retreats during injection molding, the product is stepped, the step is poor, the product is scrapped, and if the foreign self-locking oil cylinder is adopted, the price is high, and the cost is low.
Disclosure of utility model
In order to solve the problems in the prior art, the utility model provides a lateral self-locking core-pulling structure, which is additionally provided with a self-locking mechanical structure on the basis of the core-pulling structure, so that the situation of retreating due to high pressure in the injection molding process is avoided.
The side self-locking core pulling structure comprises a core pulling structure, a sliding block assembly, locking blocks, pressing strips, an oil cylinder and an oil cylinder fixing block, wherein the locking blocks are movably arranged in two sides of the rear part of the sliding block assembly and move left and right in the sliding block assembly, one end of each oil cylinder fixing block is movably arranged in the middle of the rear part of the sliding block assembly, the other end of each oil cylinder fixing block is connected with the corresponding oil cylinder, one end of each oil cylinder fixing block moves back and forth in the middle of the rear part of the sliding block assembly, the pressing strips are arranged on two sides of the sliding block assembly, locking surfaces matched with the locking blocks are formed in the inner sides of the pressing strips, one end of the core pulling structure is movably arranged in the lower side of the front part of the sliding block assembly and moves upwards along with the horizontal direction of the sliding block assembly, when the self-locking structure is needed, the oil cylinder pushes the oil cylinder fixing block forward to push the upper side of the sliding block assembly, and accordingly self-locking is achieved, when the self-locking structure is needed, the oil cylinder pulls the oil cylinder fixing block backwards, makes the oil cylinder fixing block contact with the other side of the sliding block assembly, and continues to pull the sliding block assembly backwards, the sliding block assembly, and the sliding block assembly is driven to move backwards along the sliding block assembly and accordingly, and moves inwards in the locking process.
Further, the sliding block assembly comprises a sliding block I and a sliding block II fixed at the back of the sliding block I, the widths of the sliding block I and the sliding block II are consistent, bumps are arranged at the bottoms of two sides, a pressing bar is in contact with the upper surfaces of the bumps at the bottoms of the sliding block I and the sliding block II, a U-shaped groove I is formed in the middle front part of the sliding block II, a U-shaped groove II is formed in the rear part of the sliding block II, the length, the width and the depth of the U-shaped groove I are larger than those of the U-shaped groove II, one end of an oil cylinder fixing block is located in the U-shaped groove I, the other end of the oil cylinder fixing block penetrates through the U-shaped groove II and is connected with the oil cylinder, one end of the oil cylinder fixing block moves back and forth in the U-shaped groove I, and inclined planes are arranged at two sides of the front end of the oil cylinder fixing block.
Further, the length of the U-shaped groove I is larger than the length d of one end of the oil cylinder fixing block, and d is 10mm.
Further, the hollow groove matched with the locking block is formed in the middle of two sides of the first U-shaped groove on the second sliding block, the through hole is formed in the two sides of the second sliding block in a sliding direction, the through hole penetrates through the hollow groove, a transverse waist round hole is formed in the middle of the locking block, a movable limiting pin is arranged in the waist round hole, the limiting pin is also inserted into the through hole, and the transverse distance of the waist round hole is larger than the diameter of the limiting pin by a, and a is 3mm.
Further, a T-shaped sliding groove inclined upwards to the front side is formed in the bottom of the sliding block, one end of the core pulling is arranged in the T-shaped sliding groove, and the outer side face of the core pulling is sleeved with a guide sleeve.
Further, a first limiting block is arranged in front of the first sliding block, and a second limiting block is arranged behind the second sliding block.
Compared with the prior art, the utility model has the beneficial effects that the locking block and the oil cylinder fixing block with the front end provided with the inclined surface are arranged on the second sliding block, and the locking surface is arranged on the inner side surface of the pressing bar, so that the inclined surface at the front end of the oil cylinder fixing block extrudes the locking block into the locking surface, the second sliding block and the first sliding block are locked by the locking block, the situation of retreating due to larger pressure in the injection molding process is avoided, the first sliding block and the second sliding block are designed to be separated, the disassembly and the assembly are convenient, the grinding is convenient, the control precision is high, and the independent limiting pin is further arranged, thereby being beneficial to limiting the locking block, and the mechanical self-locking structure cannot fail.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a side cross-sectional view of the prior art
FIG. 3 is an exploded view of the present utility model and its products;
FIG. 4 is a top view of the present utility model as installed on a product;
FIG. 5 is a cross-sectional view taken at A-A of FIG. 4;
FIG. 6 is a cross-sectional view taken at B-B in FIG. 5;
FIG. 7 is an enlarged view of FIG. 6 at C;
FIG. 8 is a top view of the present utility model with the core completed;
FIG. 9 is a cross-sectional view taken at D-D of FIG. 8;
FIG. 10 is a cross-sectional view taken at E-E of FIG. 9;
fig. 11 is an enlarged view of fig. 10 at F.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, in the reversing core-pulling structure in the prior art, an oil cylinder 11 is connected with a sliding block one 4 and drives the sliding block one 4 to slide horizontally and backwards, then the bottom surface of the sliding block one 4 is connected with a core-pulling 2, the bottom surface of the sliding block one 4 is provided with a guide rail, an angled T-shaped chute is designed on the guide rail, the top end of the core-pulling 2 is movably connected in the T-shaped chute, the core-pulling 2 is oblique and one end of the core-pulling 2 is connected in a back-off 11 of a product 1, and when the sliding block one 4 slides horizontally and backwards in the T-shaped chute relatively, the height of the T-shaped chute is gradually increased due to the angle of the T-shaped chute, so that the core-pulling 2 is driven to slide upwards and separate from the back-off 11. When the quantity of the inverted buckles 11 of the product 1 is large, the projection area is large, a slightly larger oil cylinder 11 is needed to be used continuously, but the cost is increased, if a common oil cylinder 11 is selected, the oil cylinder 11 is retreated due to large injection molding force when the product 1 is injected, so that the product 1 is scrapped due to steps and level differences of the product 1, and if the foreign self-locking oil cylinder 11 is adopted, the cost is high, and the cost is low. Therefore, it is necessary to develop a structure with low cost and only the common core-pulling 11 is needed to reduce the cost.
Referring to fig. 3-11, the present utility model provides the following technical solutions: the side self-locking core pulling structure comprises a core pulling 2, a sliding block assembly, locking blocks 6, pressing strips 8, an oil cylinder 11 and an oil cylinder fixing block 12, wherein the two locking blocks 6 and the pressing strips 8 are respectively arranged at two sides of the rear part of the sliding block assembly, the two locking blocks 6 are respectively movably arranged in the two sides of the rear part of the sliding block assembly and move left and right in the sliding block assembly, one end of the oil cylinder fixing block 12 is movably arranged in the middle of the rear part of the sliding block assembly, the other end of the oil cylinder fixing block 12 is connected with the oil cylinder 11, the oil cylinder fixing block 12 penetrates through the rear part of the sliding block assembly in the front-rear direction, two side surfaces of one end of the oil cylinder fixing block 12 are respectively contacted with one side of the two locking blocks 6, one end of the oil cylinder fixing block 12 moves forwards and backwards in the middle of the rear part of the sliding block assembly, the two pressing strips 8 are respectively arranged at two side edges of the sliding block assembly, locking surfaces 81 matched with the locking blocks 6 are respectively arranged at the inner sides of the pressing strips 8, the ends of the locking blocks 6 are recessed towards the inside of the pressing strips 8, the locking surfaces 81 can be clamped in the locking surfaces 81, one end of the locking blocks 6 is movably arranged in the front lower side of the sliding block assembly, and moves upwards along with the sliding block assembly, the sliding block assembly moves upwards, the sliding block 2, and the sliding block assembly moves upwards, the sliding block 12, and can push the sliding block 12 to the sliding block assembly to the two side and the sliding block assembly, and the two side blocks 12 can not be driven to move upwards and the sliding block 1, and the sliding block assembly and can not be locked by the sliding tightly and pushed by the locking block 1, and move, and the locking block 1, and the side; when the unlocking is needed, the oil cylinder 11 pulls the oil cylinder fixing block 12 backwards to be contacted with the other side of the sliding block component, at this time, the oil cylinder 11 continues to pull backwards, the sliding block assembly is driven to move backwards together, and in the process, the locking surface 81 presses the locking block 6 to move inwards, and the locking block 6 moves into the sliding block assembly to prevent the sliding block assembly from moving, so that unlocking is achieved.
Specifically, the sliding block assembly includes sliding block one 4 and sliding block two 5 fixed at the back of sliding block one 4, sliding block one 4 and sliding block two 5 width are unanimous and all set up the lug in both sides bottom, two layering 8 all contact with the upper surface of sliding block one 4 and sliding block two 5 both sides bottom lug respectively, make sliding block one 4 and sliding block two 5 can horizontal retreating, the front portion offers U type groove one 53 in the middle of sliding block two 5, U type groove two 54 is offered at the rear portion, U type groove one 53 length, width and degree of depth are all bigger than U type groove two 54, U type groove one 53U is on the basis of type groove two 54, increase forward length, width and degree of depth, cylinder fixed block 12 one end is located U type groove one 53 and cylinder fixed block 12 passes the other end and be connected with hydro-cylinder 11 behind the U type groove two 54, cylinder fixed block 12 end is in U type groove one 53 back and forth and the width and the height of cylinder fixed block one end is bigger than U type groove two 54, width and degree of depth that cylinder fixed block one end 12 is in U type groove one 53, U type groove one end is equipped with 5 is equipped with in the side of sliding block one side 5, in order to control the side of sliding block one side 4, in addition, the one side of the sliding block one end is equipped with 4 is equipped with 5, the slope one side 5 is adjusted in order to the side 5 is easy to push away from the sliding block one side, in order to control the sliding block one side, and the sliding block one side 1 is equipped with the end is equipped with 4, and the end is equipped with a side 5, and is equipped with a self-locking device.
Specifically, the length of the first U-shaped groove 53 is greater than the length d of one end of the oil cylinder fixing block 12 by 10mm, and one end of the oil cylinder fixing block 12 can move forwards or backwards by 10mm in the first U-shaped groove 53.
Specifically, hollow grooves 51 matched with locking blocks 6 are formed in the middle of two sides of a first U-shaped groove 53 on a second sliding block 5, two locking blocks 6 are movably mounted in the hollow grooves 51 on two sides respectively, the left and right lengths of the locking blocks 6 are longer than those of the hollow grooves 51, when the locking blocks 6 are pushed to the inside of the second sliding block 5, one end of each locking block 6 protrudes out of the first U-shaped groove 53, through holes 52 are formed in the two sides of the second sliding block 5 along the sliding direction, the through holes 52 penetrate through the hollow grooves 51, transverse waist round holes 61 are formed in the middle of each locking block 6, movable limiting pins 7 are arranged in the waist round holes 61, the limiting pins 7 are also inserted into the through holes 52, the two limiting pins 7 are arranged, the transverse distance of each waist round hole 61 is larger than the diameter of each limiting pin 7 by a, the left and right moving distance of each locking block 6 is 3mm, and each locking block 6 is independently limited in the left and right directions by the limiting pins 7 after the corresponding locking blocks 6 are mounted on the second sliding block 5, and therefore the locking blocks 6 are prevented from failing after moving.
Specifically, the T-shaped sliding groove inclined upwards forwards is formed in the bottom of the sliding block I4, one end of the core pulling 2 is arranged in the T-shaped sliding groove, the other end of the core pulling 2 is connected with the back-off 11 in the product 1, the core pulling 2 is inclined and is consistent with the direction of the back-off 11, when the sliding block I4 horizontally retreats backwards, the core pulling 2 relatively slides in the T-shaped sliding groove, the height of the T-shaped sliding groove is gradually increased because the T-shaped sliding groove is inclined upwards forwards, the core pulling 2 is driven to obliquely upwards deviate from the back-off 11, the outer side surface of the core pulling 2 is sleeved with the guide sleeve 3, and the guide sleeve 3 has the guide lubrication function on the core pulling 2 so as to prevent the core pulling 2 from being damaged.
Specifically, the front of the sliding block I4 is provided with a first limiting block 9, when the self-locking is carried out, the front side of the sliding block I4 is blocked by the first limiting block 9, one end of the core pulling 2 is just connected with the back-off 11, the position of the sliding block I4 is the position of the product 1 during injection molding, the rear of the sliding block II 5 is provided with a second limiting block 10, when the unlocking is carried out, the sliding block I4 and the sliding block II 5 are pulled backwards by the oil cylinder 11 through the oil cylinder fixing block 12, the sliding block II 5 is limited by the second limiting block 10, and at the moment, one end of the core pulling 2 is driven by the sliding block I4 to exit the back-off 11.
The installation and movement process of the utility model comprises the steps of firstly installing a guide sleeve 3 into a front mould, installing two locking blocks 6 into hollow grooves 51 on two sides of a sliding block II 5, respectively inserting two limiting pins 7 into through holes 52 on two sides, enabling the limiting pins 7 to pass through kidney-shaped holes 61 on the locking blocks 6, limiting and fixing the locking blocks 6 by the limiting pins 7, fixing the sliding block II 5 and the sliding block I4 together by using screws, installing a core pulling 2 into the sliding block I4 through a T-shaped chute, installing the parts into the front mould together and fixing the parts by using a pressing strip 8, enabling the pressing strip 8 to be just contacted with convex strips on two sides of the bottoms of the sliding block I4 and the sliding block II 5, enabling the core pulling 2 to pass through the guide sleeve 3, fixing a limiting block I9 and a limiting block II 10 into the front mould, finally fixing one end of an oil cylinder fixing block 12 with an oil cylinder 11, installing one end of the oil cylinder fixing block 12 into a U-shaped groove I53 in the sliding block II 5, and enabling the oil cylinder fixing block 12 to pass through the U-shaped groove II 54. The mold moves, when the oil cylinder 11 and the oil cylinder fixed block 12 move backwards together in a locking state, the oil cylinder fixed block 12 moves backwards for 10mm in a U-shaped groove 53 of a sliding block II 5, when the oil cylinder fixed block 12 contacts the rear wall of the U-shaped groove 53, the sliding block I4 and the sliding block II 5 are driven to move backwards together, the sliding block I4 moves backwards to drive the core pulling 2 to move obliquely upwards, so that the core pulling action is completed, the back-pulling 11 in the product 1 is withdrawn, in the process, the locking block 6 is positioned in a locking surface 81 in a pressing strip 8 at first, the oil cylinder fixed block 12 also has a backward movement trend along with the backward movement trend of the oil cylinder fixed block 12 to drive the sliding block I4 and the sliding block II 5, and the locking block 6 moves sideways for 3mm through the inclined extrusion of a locking surface 81 on the pressing strip 8, and the core pulling is not locked. When injection molding is carried out, the oil cylinder 11 and the oil cylinder fixing block 12 move forwards together, the oil cylinder fixing block 12 moves forwards for 10mm in the U-shaped groove I53 of the sliding block II 5, the oil cylinder fixing block 12 contacts with the rear surface of the sliding block I4, and then in the process of moving forwards for 10mm of the oil cylinder fixing block 12, the oil cylinder fixing block 12 drives the two locking blocks 6 to move laterally for 3mm through the inclined planes 121 on the two sides of the front end, so that the locking blocks 6 are clamped in the locking surfaces 81 on the pressing strips 8, and a mechanical self-locking effect is achieved.
When the core-pulling clamping line of the product 1 is poor and the die space is compact, the oil cylinder 11 with smaller oil diameter can be selected, and by adopting the utility model, the back in the injection molding process can be avoided, the consistency of the core-pulling clamping line state is ensured, the problem of occupying the die space can be solved, and the processing cost and the purchasing cost are reduced.
Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present utility model, and the present utility model is not limited to the above-mentioned embodiments, but it is possible for those skilled in the art to modify the technical solutions described in the above-mentioned embodiments or to make equivalent substitutions for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520523565.1U CN223864228U (en) | 2025-03-25 | 2025-03-25 | Lateral self-locking core-pulling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520523565.1U CN223864228U (en) | 2025-03-25 | 2025-03-25 | Lateral self-locking core-pulling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223864228U true CN223864228U (en) | 2026-02-03 |
Family
ID=98594407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202520523565.1U Active CN223864228U (en) | 2025-03-25 | 2025-03-25 | Lateral self-locking core-pulling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223864228U (en) |
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2025
- 2025-03-25 CN CN202520523565.1U patent/CN223864228U/en active Active
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