Die with replaceable insert
By designing replaceable limit inserts and flow channel structures in the mold, the problem of deflection and unstable connection of the metal clasp during injection molding is solved, and the stable connection and service life of the handlebar are improved.
Patent Information
- Application Number
- CN202323287580.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-04
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2033-12-04
AI Technical Summary
When existing injection molds produce handles, the metal clasp rings are prone to deflection, resulting in unstable connection with the plastic body and affecting product quality.
Design a mold with replaceable inserts, including upper mold and lower mold, the lower mold is provided with a limit insert, a convex column and a flow guide groove are provided on the convex column, and a limit rib and a guide on the outer peripheral wall of the convex column are provided with a limit rib and a guide The flow groove and the inner ring side of the metal clasp ring are pre-installed to ensure the accurate positioning and stable connection of the clasp ring in the mold.
The accurate angle positioning and connection stability of the metal clasp ring is achieved, extending the service life of the mold and improving product quality.
Smart Images
Figure CN222201440U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molds, in particular to a mold with replaceable inserts. Background Art
[0002] Car handlebars are mostly produced and processed using injection molds. Generally speaking, the mold cavity is designed according to the structure and shape of the product. When the mold is closed, the liquid medium is injected into the cavity through the injection port. After the medium is cooled and formed, the product can be demoulded to obtain the finished product.
[0003] For some types of handlebars, it is necessary to connect the plastic body with the metal buckle during production. In the prior art, a hanging column structure for temporarily fixing the metal buckle is generally provided in the mold cavity. The metal buckle is first sleeved onto the hanging column before the mold is closed. After the mold is closed, the liquid medium enters the cavity and contacts the metal buckle. After the medium is cooled, the plastic body connected with the metal buckle can be obtained. However, since the metal buckle is annular, the metal fastener often deflects when placed on the hanging column, resulting in the angle of the metal fastener of the handlebar that does not meet the requirements relative to the plastic body; at the same time, the inner ring side of the metal buckle in the prior art is in contact with the hanging column, which results in the liquid medium being unable to flow to the inner ring side of the metal buckle, making the connection between the inner ring side of the metal buckle and the plastic body not stable enough, affecting product quality. Utility Model Content
[0004] The purpose of the utility model is to solve the problem that when the mold in the prior art temporarily fixes the metal buckle ring through a hanging column structure, the metal buckle ring itself is easily deflected, and the connection between the inner ring side of the metal buckle ring and the plastic body is not stable enough during the subsequent glue injection process, which affects the quality of the final product.
[0005] In order to solve the above problems, the utility model provides a mold with replaceable inserts, including an upper mold and a lower mold arranged relatively to each other, the lower mold is provided with a cavity opened toward the upper mold, and also includes a limiting insert, the inner wall of the cavity is provided with a mounting hole, the limiting insert is removably plugged into the mounting hole, the limiting insert is provided with a boss protruding from the inner wall of the cavity, the outer peripheral wall of the boss is provided with a raised limiting rib and at least two guide grooves, the long side direction of the limiting rib is parallel to the axis of the boss, and the guide groove is arranged parallel to the limiting rib and distributed along the circumference of the boss.
[0006] Compared with the prior art, the above scheme arranges limiting ribs on the limiting insert and pre-arranges a groove structure on the inner ring side of the metal buckle, so that when the metal buckle is sleeved on the limiting insert, the groove structure of the metal buckle will be snapped into the limiting rib to achieve accurate positioning of the angle of the metal buckle; at the same time, the above scheme arranges a plurality of guide grooves on the outer peripheral wall of the limiting insert, so that the liquid medium can enter the guide groove and contact and connect with the inner ring side of the metal buckle, thereby ensuring the final connection stability between the inner ring side of the metal buckle and the plastic body; in addition, the present scheme designs the limiting insert to be detachably connected to the mold cavity, so that when the limiting insert is worn, it can be directly replaced, which effectively improves the overall service life and has good practicality.
[0007] Preferably, at least one guide groove is provided on the outer peripheral wall of the boss at both sides of the limiting rib, so that the guide grooves on both sides of the limiting rib can guide the medium to contact the position of the metal buckle close to the limiting rib, thereby improving the connection stability between the position of the metal buckle close to the limiting rib and the plastic body.
[0008] Preferably, the guide grooves are evenly distributed along the circumference of the boss, thereby further improving the connection stability between the inner ring side of the metal buckle and the plastic body.
[0009] Preferably, the limiting rib includes a guide section on the side away from the mounting hole and a limiting section on the side close to the mounting hole, the protrusion height of the guide section relative to the boss gradually decreases in the direction away from the mounting hole, the protrusion height of the limiting section relative to the boss is equal to the maximum protrusion height of the guide section relative to the boss, the setting of the guide section can make the groove structure of the metal buckle more convenient and accurate to be snapped into the limiting rib, and then the groove structure of the metal buckle is effectively fixed by the limiting section of the limiting rib.
[0010] Preferably, a raised positioning boss is provided on the outer peripheral wall of the boss facing away from the limiting rib, and the end face of the positioning boss facing away from the mounting hole in the axial direction of the boss corresponds to the limiting section of the limiting rib, and the distance between the end face of the positioning boss facing away from the mounting hole and the junction of the limiting section and the guide section of the limiting rib is equal to the thickness of the metal buckle, so that the positioning boss can combine with the limiting rib to achieve a more stable supporting and fixing effect on the metal buckle.
[0011] Preferably, the cross-sectional shape of the limiting rib is semicircular, so as to facilitate the alignment and snap connection of the groove structure of the metal buckle.
[0012] Preferably, the cross-sectional shape of the guide groove is rectangular, which is convenient for processing. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is an overall schematic diagram of a mold with replaceable inserts;
[0014] Figure 2 is a schematic diagram of a mold with replaceable inserts with the upper mold hidden;
[0015] Figure 3 A mold with replaceable inserts Figure 2 The schematic diagram after the plastic body is hidden on the basis;
[0016] Figure 4 for Figure 3 A partial enlarged schematic diagram of the middle A area;
[0017] Figure 5 A mold with replaceable inserts Figure 3 Schematic diagram of the base without the metal buckle;
[0018] Figure 6 for Figure 5 A partial enlarged schematic diagram of the middle A area;
[0019] Figure 7 A schematic diagram of a lower mold of a mold with replaceable inserts.
[0020] Figure 8 for Figure 7 A partial enlarged schematic diagram of the middle C area;
[0021] Fig. 9 A schematic diagram of a limit insert of a mold with a replaceable insert.
[0022] Description of reference numerals:
[0023] 1. Upper die; 2. Lower die; 21. Cavity; 22. Mounting hole; 3. Limit insert; 31. Boss; 32. Limit rib; 321. Guide section; 322. Limit section; 33. Guide groove; 34. Positioning boss; 4. Metal buckle. DETAILED DESCRIPTION
[0024] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. It should also be noted that all directional indications in the embodiments of the utility model (such as up, down, left, right, front, back, inside, outside) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indication will also change accordingly.
[0025] See also Figure 1-Figure 9 A mold with replaceable inserts provided in an embodiment of the utility model includes an upper mold 1 and a lower mold 2 arranged relatively to each other, the lower mold 2 is provided with a cavity 21 opened toward the upper mold 1, and also includes a limiting insert 3, the inner wall of the cavity 21 is provided with a mounting hole 22, the limiting insert 3 can be detachably inserted into the mounting hole 22, and a boss 31 protruding from the inner wall of the cavity 21 is provided on the limiting insert 3, and the outer peripheral wall of the boss 31 is provided with a raised limiting rib 32 and at least two guide grooves 33, the long side direction of the limiting rib 32 is parallel to the axis of the boss 31, and the guide grooves 33 are arranged parallel to the limiting rib 32 and distributed along the circumference of the boss 31.
[0026] The above scheme arranges a limiting rib 32 on the limiting insert 3 and pre-arranges a groove structure on the inner ring side of the metal buckle 4, so that when the metal buckle 4 is sleeved on the limiting insert 3, the groove structure of the metal buckle 4 will be snapped into the limiting rib 32 to achieve accurate positioning of the angle of the metal buckle 4; at the same time, the above scheme arranges a plurality of guide grooves 33 on the outer peripheral wall of the limiting insert 3, so that the liquid medium can enter the guide grooves 33 and contact and connect with the inner ring side of the metal buckle 4, thereby ensuring the final connection stability between the inner ring side of the metal buckle 4 and the plastic body; in addition, the present scheme designs the limiting insert 3 to be detachably connected to the cavity 21, so that when the limiting insert 3 is worn, it can be directly replaced, which effectively improves the overall service life and has good practicality.
[0027] It should be noted that the position and angle of the limiting insert 3 in the cavity 21 are set according to the product design requirements. For example, in this embodiment, since the product is a handlebar that needs to be connected to metal buckles 4 at both ends, there are two limiting inserts 3, which are respectively located at the two ends of the cavity 21. Of course, the limiting insert 3 can also be set at other positions or other angles in the cavity 21 according to the product design requirements, and this design is not limited to this.
[0028] In this embodiment, the mounting hole 22 is vertically opened on the inner wall of the cavity 21, the lower end of the limiting insert 3 is vertically inserted into the mounting hole 22, and the limiting insert 3 and the mounting hole 22 can be an interference fit or a threaded fit; the boss 31 is vertically arranged at the upper end of the limiting insert 3, and the boss 31 and the limiting insert 3 are preferably integrally formed.
[0029] As an optimization of the above embodiment, the guide grooves 33 are evenly distributed along the circumference of the boss 31, thereby further improving the connection stability between the inner ring side of the metal buckle 4 and the plastic body.
[0030] Furthermore, in the present embodiment, a guide groove 33 is respectively provided on both sides of the limiting rib 32 on the outer peripheral wall of the boss 31, so that the guide grooves 33 on both sides of the limiting rib 32 can guide the medium to contact the position of the metal buckle 4 close to the limiting rib 32, thereby improving the connection stability between the position of the metal buckle 4 close to the limiting rib 32 and the plastic body.
[0031] As an optimization of the limiting rib 32, the limiting rib 32 includes a guide section 321 on the side away from the mounting hole 22 and a limiting section 322 on the side close to the mounting hole 22. The protrusion height of the guide section 321 relative to the boss 31 gradually decreases in the direction away from the mounting hole 22, and the protrusion height of the limiting section 322 relative to the boss 31 is equal to the maximum protrusion height of the guide section 321 relative to the boss 31. The setting of the guide section 321 can make the groove structure of the metal buckle 4 more convenient and accurate to be clamped to the limiting rib 32, and then the groove structure of the metal buckle 4 is effectively fixed by the limiting section 322 of the limiting rib 32.
[0032] Furthermore, a raised positioning boss 34 is provided at a position of the outer wall of the boss 31 facing away from the limiting rib 32. In the axial direction of the boss 31, the end face of the positioning boss 34 facing away from the mounting hole 22 corresponds to the limiting section 322 of the limiting rib 32, and the distance between the end face of the positioning boss 34 facing away from the mounting hole 22 and the junction of the limiting section 322 and the guide section 321 of the limiting rib 32 is just equal to the thickness of the metal buckle 4, so that the positioning boss 34 can be combined with the limiting rib 32 to achieve a more stable supporting and fixing effect on the metal buckle 4.
[0033] In this embodiment, the cross-sectional shape of the limiting rib 32 is semicircular, which is beneficial to the alignment and clamping of the groove structure of the metal buckle 4; the cross-sectional shape of the guide groove 33 is rectangular, which is convenient for processing.
[0034] Although the disclosure is as above, the protection scope of the disclosure is not limited thereto. For those skilled in the art, various changes and modifications can be made without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the utility model.
Claims
1. A mold with a replaceable insert, comprising an upper mold (1) and a lower mold (2) arranged opposite to each other, wherein the lower mold (2) is provided with a mold cavity (21) opened toward the upper mold (1), characterized in that: The invention also comprises a limiting insert (3), wherein the inner wall of the cavity (21) is provided with a mounting hole (22), the limiting insert (3) can be detachably plugged into the mounting hole (22), the limiting insert (3) is provided with a boss (31) protruding from the inner wall of the cavity (21), the outer peripheral wall of the boss (31) is provided with a raised limiting rib (32) and at least two guide grooves (33), the long side direction of the limiting rib (32) is parallel to the axis of the boss (31), and the guide groove (33) is arranged parallel to the limiting rib (32) and distributed along the circumference of the boss (31).
2. A mold with replaceable inserts according to claim 1, characterized in that: At least one guide groove (33) is respectively provided on the outer peripheral wall of the convex column (31) at positions on both sides of the limiting rib (32).
3. A mold with replaceable inserts according to claim 1, characterized in that: The guide grooves (33) are evenly distributed along the circumference of the convex column (31).
4. A mold with replaceable inserts according to claim 1, characterized in that: The limiting rib (32) comprises a guide section (321) on a side away from the mounting hole (22) and a limiting section (322) on a side close to the mounting hole (22); a protruding height of the guide section (321) relative to the boss (31) gradually decreases in a direction away from the mounting hole (22); a protruding height of the limiting section (322) relative to the boss (31) is equal to a maximum protruding height of the guide section (321) relative to the boss (31).
5. A mold with replaceable inserts according to claim 1, characterized in that: A raised positioning boss (34) is provided on the outer peripheral wall of the boss (31) at a position facing away from the limiting rib (32); the end surface of the positioning boss (34) facing away from the mounting hole (22) in the axial direction of the boss (31) corresponds to the limiting section (322) of the limiting rib (32); and the distance between the end surface of the positioning boss (34) facing away from the mounting hole (22) and the junction of the limiting section (322) and the guide section (321) of the limiting rib (32) is exactly equal to the thickness of the metal buckle (4).
6. A mold with replaceable inserts according to claim 1, characterized in that: The cross-sectional shape of the limiting rib (32) is semicircular.
7. A mold with replaceable inserts according to claim 1, characterized in that: The cross-sectional shape of the guide groove (33) is rectangular.