Mold locking ejection limiting structure
By adopting the design of self-limiting limit blocks and fixed blocks in the mold locking mechanism, the problem of time-consuming, labor-intensive and cost-increasing mold disassembly caused by the additional limit structure in the existing technology is solved, and a simple, stable and low-cost production process of the mold structure is achieved.
Patent Information
- Application Number
- CN202422993354.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-10-14
- Estimated Expiration
- 2034-12-05
AI Technical Summary
The clamping mechanism of existing plastic molds requires an additional limiting structure to complete the limiting after the first ejection, which makes disassembly time-consuming and labor-intensive, increases mold and labor costs, and also poses the risk of missing assembly and mold collision.
The self-limiting structure design of the limit block and the fixed block is adopted. When the mold is ejected for the first time, the limit block and the fixed block cooperate to achieve self-limiting, avoiding the need for additional limiting structures and ensuring a simple and stable mold structure.
It reduces the production and procurement costs of molds, reduces the risks of missing and collision, simplifies the mold disassembly process, reduces the cost of subsequent rectification, and improves the convenience of repair and maintenance.
Smart Images
Figure CN223431948U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of automobile injection mold, concretely relates to a lock die ejection limiting structure. BACKGROUND
[0002] For the lock die mechanism structure of the secondary opening of the plastic mold, the conventional lock die mechanism first ejection synchronously ejects, but needs the additional limiting structure cooperation to complete, and then completes the second ejection, so the general mold will design the limiting screw structure or other structures to limit, and stops under the action of the limiting screw when completing the first synchronization.This lock die structure needs to design another structure to complete the limiting after the first ejection, and it is time-consuming and laborious in the process of trial and production disassembly, increases the mold cost and the artificial cost. CONTENT OF UTILITY MODEL
[0003] In order to solve the above problems in the prior art, the utility model provides a lock die ejection limiting structure, which increases the form of limiting itself, and when the mold first moves and ejects, the movement is stopped through the self-limiting, and then the mold continues the second ejection movement.
[0004] In order to achieve the above object, the utility model provides the following technical scheme: a lock die ejection limiting structure, including fixed block, draw hook, lock tongue, spring and limiting block, the upper portion of the middle of fixed block is provided with recess one, the width of recess one is adapted to the width of draw hook, and draw hook is located in recess one and slides up and down in recess one, the middle of one side of limiting block is provided with notch, and the both sides of the notch of limiting block are clamped on the middle side wall of fixed block, limiting block slides up and down on the middle side wall of fixed block and is limited by the top and bottom of fixed block, lock tongue is stepped, and a part of spring is located in the side face of high step one side, lock tongue is located in the middle of the upper surface of limiting block, the side of lock tongue away from spring is located on one side of the notch of limiting block, the bottom of draw hook is hooked on the bottom surface of the side of lock tongue away from spring, and the side of the side of lock tongue away from spring is adapted to the face of the front side of the top of fixed block.
[0005] Further, the side of the side of lock tongue away from spring is inclined surface two, the face of the front side of the top of fixed block is inclined surface one, inclined surface one is adapted to inclined surface two, recess two with the size adapted to lock tongue is formed in the middle of the upper surface of limiting block, and the width of lock tongue is consistent with the width of the middle of recess one of fixed block.
[0006] Further, the top of fixed block is provided with lug, the width of lug of fixed block is greater than the width of the notch of limiting block and less than the width of limiting block, and the width of the bottom of recess one of fixed block is equal to the width of lug of fixed block.
[0007] Further, inclined surface one is located below lug.
[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention realizes self-limitation of the mold locking mechanism when the mold is ejected for the first time by means of self-limitation of the limit block and the top and bottom of the fixed block. No additional limit structure is required in the mold, thereby improving the complexity of the mold structure, taking up little space, achieving balanced limit and stable structure, thereby greatly reducing the risk of missing assembly and mold collision during the production process, effectively controlling the mold opening sequence, and greatly reducing the cost and procurement cost of the mold; the present invention also avoids the expensive cost of later modification of the mold and is more convenient for repair and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 This is a schematic diagram of the structure of the utility model Figure One ;
[0010] Figure 2 This is a schematic diagram of the structure of the utility model Figure Two ;
[0011] Figure 3 This is a schematic diagram of the structure of the utility model Figure Three ;
[0012] Figure 4 This is a schematic diagram of the structure of the utility model Figure Four ;
[0013] Figure 5 This is an exploded view of the utility model;
[0014] Figure 6 This is a schematic diagram of the structure of the utility model when it is working;
[0015] Figure 7 for Figure Six Cross-sectional view at CC;
[0016] Figure 8 Schematic diagram of the existing technical structure Figure One ;
[0017] Figure 9 Schematic diagram of the existing technical structure Figure Two ;
[0018] Figure 10 for Figure Nine Cross-sectional view at AA in the middle;
[0019] Figure 11 Schematic diagram of the structure when working with existing technology;
[0020] Figure Twelve for Figure Eleven Cross-sectional view at the middle BB. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0022] See also Figures 8-12 For the locking structure of the secondary opening of the plastic mold, the locking structure in the prior art includes a fixed block 1, a draw hook 2, a locking tongue 3, a spring 4, and a limit block 5. After the locking structure is installed on one side of the mold, a limit screw 6 structure needs to be designed on the mold. During the first ejection, the fixed block 1 is fixed, and the draw hook 2 and the locking tongue 3 are ejected together for 26 mm, and then limited by the limit screw 6 on the mold. During this process, the locking tongue 3 contacts the upper part of the fixed block 1 and moves 5 mm into the mold. Then the mold continues to move for the second time. At this time, the draw hook 2 is separated from the locking tongue 3, and the draw hook 2 is ejected for the second time together, completing the secondary ejection of the mold. In the prior art, this locking structure is troublesome and laborious during the trial mold and production disassembly process, and is prone to missing, causing damage to the mold, increasing mold cost and labor cost; if a different solution is to be replaced later, it will also take a lot of time and energy to rectify.
[0023] See also Figures 1-7The utility model provides the following technical solutions: a locking mold ejection limiting structure, including a fixed block 1, a hook 2, a lock tongue 3, a spring 4 and a limiting block 5. A groove 11 is opened in the upper middle part of the fixed block 1. The width of the groove 11 is adapted to the width of the hook 2 and the hook 2 is located in the groove 11 and slides up and down in the groove 11. A notch 51 is set in the middle of one side of the limiting block 5 and both sides of the notch 51 of the limiting block 5 are stuck on the middle side wall 1 of the fixed block. The limiting block 5 slides up and down along the middle side wall 1 of the fixed block and is limited by the top and bottom of the fixed block 1. The tongue 3 is in the shape of a step and a part of the spring 4 is located in the side surface of the high-step side. The lock tongue 3 is located in the middle of the limit block 5. The lock tongue 3 can slide back and forth in the middle of the limit block 5. The lock tongue 3 slides up and down synchronously with the limit block 5. The side of the lock tongue 3 away from the spring 4 is placed on the side of the notch 51 on the limit block 5. After the lock tongue 3, the limit block 5 and the fixed block 1 are installed, the side of the lock tongue away from the spring 4 is attached to the fixed block 1. After the draw hook 2 is installed, the bottom of the draw hook 2 is hooked on the bottom surface of the lock tongue 3 away from the spring 4, and the side of the lock tongue 3 away from the spring 4 is attached to the fixed block 1. The surface of the top front side is adapted; when the locking mold ejection limit structure is installed, the mold starts the first ejection movement, the draw hook 2 moves upward along the groove 11, and the lock tongue 3 moves upward under the drive of the draw hook 2. At the same time, the limit block 5 and the lock tongue 3 move upward synchronously. When the side of the lock tongue 3 away from the spring 4 contacts the surface of the top front side of the fixed block 1, the draw hook 2 continues to drive the lock tongue 3 to move upward. Therefore, the side of the lock tongue 3 away from the spring 4 is squeezed and moves toward the inside of the mold. The lock tongue 3 will squeeze the spring 4 thereon. The spring 4 has a restoring force, and finally the lock is The movement distance of tongue 3 into the mold is b, and b is 5mm. At this time, on the one hand, the limit block 5 is limited by the top of the fixed block 1, thereby completing the first ejection movement of the mold. The first movement distance of the mold is a, and a is 26mm. On the other hand, the bottom of the draw hook 2 is separated from the lock tongue 3. After the mold is reset, the lock tongue 3 is also reset under the action of the spring 4; then the mold starts the second ejection movement, and the draw hook 2 is also ejected together and continues to move along the groove 11 and moves to the top of the groove 11, completing the secondary ejection of the mold. The second movement distance of the mold is c, and c is 20mm.
[0024] Specifically, the side surface of the lock tongue 3 away from the spring 4 is the inclined surface 2 31, and the surface on the front side of the top of the fixed block 1 is the inclined surface 12. The inclined surface 12 is inclined toward the front outside of the fixed block 1, and the inclined surface 12 is adapted to the inclined surface 2 31. When the lock tongue 3 moves upward, the inclined surface 12 and the inclined surface 2 31 will fit in contact. If the lock tongue 3 continues to move upward, since the fixed block 1 is fixed, the inclined surface 2 31 moves along the inclined surface 12 toward the front outside of the fixed block 1. A groove 2 52 adapted to the size of the lock tongue 3 is provided in the middle of the limit block 5. The width of the lock tongue 3 is consistent with the width of the middle part of the groove 11 on the fixed block 1, and the inclined surface 12 and the inclined surface 2 31 just fit in contact.
[0025] Specifically, protrusions 13 are provided on both sides of the top of the fixing block 1. The width of the protrusion 13 on the fixing block 1 is greater than the width of the notch 51 on the limiting block 5 and smaller than the width of the limiting block 5. The width of the fixing block 1 at the bottom of the groove 11 is equal to the width of the protrusion 13 on the fixing block 1. The initial position of the limiting block 5 is on the fixing block 1 at the bottom of the groove 11. The limiting block 5 moves between the fixing block 1 at the bottom of the groove 11 and the bottom of the protrusion 13 on the fixing block 1. When the limiting block 5 moves upward to the protrusion 13, it is limited by the protrusions 13 on both sides of the fixing block 1, realizing self-limitation, balance and stable structure. There is no need to add additional limiting structure to the mold, and the risk of mold collision after movement due to adding additional limiting structure to the mold is avoided, which also greatly reduces the risk of missing assembly during the production process.
[0026] Specifically, the inclined surface 12 is located below the protrusion 13 .
[0027] The installation and movement process of the utility model is as follows: first, fix the upper part of the draw hook 2 to the needle plate 7 and the fixed plate 8 with screws, then put a part of the spring 4 into the side of the high-order side of the lock tongue 3, and then put the lock tongue 3 with the spring 4 on one side into the fixed plate 9 and then fix it with the limit block 5, fix the lock tongue 3 on the groove 2 52 on the limit block 5, and fix the two sides of the limit block 5 to the fixed plate 2 9 with screws. Finally, fix the bottom of the groove 11 on the fixed block 1 to the base plate 10 with screws, and then install the needle plate 7, the fixed plate 8, the fixed plate 2 9, and the base plate 10 into the mold in sequence, and the installation is completed. When the mold is in the process of ejection, when the mold moves to eject for the first time, the fixed plate 2 9, the fixed plate 1 8 and the needle plate 7 move synchronously by a distance a, a is 26mm, at this time the hook 2 is driven by the needle plate 8 to move upward along the groove 11, the lock tongue 3 moves upward under the drive of the hook 2, and the limit block 5 and the lock tongue 3 move upward synchronously at the same time. When the inclined surface 2 31 on the lock tongue 3 contacts the inclined surface 12 on the fixed block 1, the hook 2 continues to drive the lock tongue 3 to move upward, so the inclined surface 2 31 is squeezed and the lock tongue 3 moves toward the inside of the mold along the groove 2 52, and the lock tongue 3 squeezes its The spring 4 on the upper part has a restoring force, and the final movement distance of the lock tongue 3 into the mold is b, b is 5mm. At this time, on the one hand, the limit block 5 is limited by the protrusions 13 on both sides of the fixed block 1, and on the other hand, since the lock tongue 3 moves into the mold, the bottom of the draw hook 2 is separated from the lock tongue 3. After the mold is reset, the lock tongue 3 is also reset under the action of the spring 4; then the mold performs a second ejection movement, the fixed plate 8 and the needle plate 7 synchronously move a distance c, c is 20mm, and the draw hook 2 is also ejected together with the needle plate 7, continues to move along the groove 11 and moves to the top of the groove 11.
[0028] The utility model realizes self-limitation of the mold locking mechanism when the mold is ejected for the first time by means of self-limiting of the limit block and the top and bottom of the fixed block. No additional limit structure is needed in the mold, which improves the complexity of the mold structure, occupies a small space, has balanced limit and stable structure, thereby greatly reducing the risk of missing assembly and mold collision in the production process, effectively controlling the mold opening sequence, and greatly reducing the cost and procurement cost of the mold. The utility model also avoids the expensive cost of mold modification in the later stage and is more convenient for repair and maintenance.
[0029] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.
Claims
1. A mold locking ejection limiting structure, comprising a fixed block (1), a draw hook (2), a locking tongue (3), a spring (4) and a limiting block (5), characterized in that: A groove (11) is provided in the upper middle portion of the fixed block (1), the width of the groove (11) being adapted to the width of the hook (2), and the hook (2) being located in the groove (11) and sliding up and down in the groove (11), a notch (51) is provided in the middle of one side of the limit block (5), and both sides of the notch (51) of the limit block (5) are clamped on the side wall (1) in the middle of the fixed block, and the limit block (5) slides up and down along the side wall (1) in the middle of the fixed block and is clamped by the fixed block (1). The top and bottom are limited, the locking tongue (3) is in a step-like shape and a part of the spring (4) is located in the side surface of the high-step side, the locking tongue (3) is located in the middle of the upper limit block (5), the side of the locking tongue (3) away from the spring (4) is placed on the side of the notch (51) on the limit block (5), the bottom of the draw hook (2) is hooked on the bottom surface of the locking tongue (3) away from the spring (4), and the side surface of the locking tongue (3) away from the spring (4) is adapted to the surface of the top front side of the fixing block (1).
2. A mold locking ejection limiting structure according to claim 1, characterized in that: The side surface of the lock tongue (3) away from the spring (4) is a second inclined surface (31), the front surface of the top of the fixed block (1) is a first inclined surface (12), and the first inclined surface (12) is adapted to the second inclined surface (31). A second groove (52) adapted to the size of the lock tongue (3) is provided in the middle of the upper surface of the limit block (5), and the width of the lock tongue (3) is consistent with the width of the middle part of the groove (11) on the fixed block (1).
3. A mold locking ejection limiting structure according to claim 2, characterized in that: Bumps (13) are provided on both sides of the top of the fixing block (1); the width of the bumps (13) on the fixing block (1) is greater than the width of the notch (51) on the limiting block (5) and smaller than the width of the limiting block (5); the width of the bottom of the groove (11) on the fixing block (1) is equal to the width of the bumps (13) on the fixing block (1).
4. A mold locking ejection limiting structure according to claim 3, characterized in that: The inclined surface 1 (12) is located below the protrusion (13).