Plastic mold provided with limiting structure and convenient to reinforce
By introducing guide slope and self-locking mechanism into the plastic mold, the problem of mold kernel position offset and lack of reinforced structure caused by the clearance of the guide column guide sleeve is solved, and higher plastic parts accuracy and mold stability are achieved.
Patent Information
- Application Number
- CN202421104845.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-21
AI Technical Summary
When the existing plastic molds are closed, the mold kernel position shifts due to the gap between the guide column guide sleeves, which affects the accuracy of the plastic parts. The lack of reinforcement structure leads to a gap at the bonding of the moving mold and the fixed mold, causing the molten material to overflow.
A plastic mold with a limiting structure and easy to reinforce is designed. By setting a guide slope at the rear mold core and the front mold core, the self-locking mechanism of fixed rotary plate and connecting the shell is ensured to ensure the moving mold seat plate and the fixed mold seat plate. The fixed position prevents position deviation and achieves accurate fit through structures such as guide columns, guide holes and limit blocks.
It effectively corrects the position deviation of the mold kernel, prevents the overflow of molten materials, improves the overall accuracy of the plastic parts, and reduces the mold gap through the reinforced structure, and enhances the stability of the mold.
Smart Images
Figure CN222290752U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plastic moulds, in particular to a plastic mould which has a limiting structure and is convenient for reinforcement. Background Art
[0002] Plastic mold is the abbreviation of a combined mold used for compression molding, extrusion molding, injection molding, blow molding and low-foaming molding. The coordinated changes of the mold convex and concave molds and the auxiliary molding system can process a series of plastic parts of different shapes and sizes. The existing molds are mostly limited by guide pins and guide sleeves when closing the mold. However, due to the sliding of the guide pins and guide sleeves against each other, there must be some gaps in the middle. These gaps will cause the position of the mold core to shift, resulting in a mold line at the edge of the plastic part, which affects the overall accuracy of the plastic part. At the same time, when closing the mold for injection molding, a certain pressure is required inside to fill the gap, and the existing plastic molds do not have a corresponding reinforcement structure, which will cause a gap to appear at the joint between the movable mold and the fixed mold, allowing the molten material to overflow. Therefore, a plastic mold with a limiting structure and easy reinforcement is designed to solve the above problems. Utility Model Content
[0003] In view of the deficiencies in the prior art, the utility model provides a plastic mold with a limiting structure and is easy to reinforce, which solves the problem that a certain margin between the guide pins and guide sleeves will cause a certain deviation in the position when the mold core is fitted, and the plastic mold has no corresponding reinforcement structure, which will cause a gap between the movable mold and the fixed mold to fit, allowing the molten material to overflow through the fitting.
[0004] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:
[0005] The utility model provides a plastic mold with a limiting structure and convenient for reinforcement, comprising: a base, a push plate is inserted and connected in the middle of the base, a push pin is fixedly connected to the upper end of the push plate, a movable mold seat plate is connected to the upper end of the base, a rear mold core is inserted and connected inside the upper surface of the movable mold seat plate, the push pin passes through the movable mold seat plate and extends to the upper end of the rear mold core, guide pillars are connected to the four corners of the upper surface of the movable mold seat plate, a fixed mold seat plate is arranged on the upper end of the guide pillar, guide holes are opened at the four corners of the fixed mold seat plate relative to the guide pillars, the guide pillars are inserted and connected to the guide holes, and the lower end of the fixed mold seat plate is connected to the inner side of the fixed mold seat plate. The end is inserted and connected with the front mold core, and the outer side of the rear mold core and the outer side of the lower end of the front mold core are both provided with guide slopes, and the front and rear sides of the movable mold base plate and the fixed mold base plate are both connected with an internal hollow connecting shell, the left side of the connecting shell is rotatably connected to the fixed rotating plate, and the right end of the fixed rotating plate is connected to an unlocking push plate, the unlocking push plate is tangent to the lower end of the left side of the fixed rotating plate, and a return spring is connected between the left side of the lower end of the unlocking push plate and the inside of the connecting shell, the right side of the upper surface of the connecting shell is connected with an insertion strip, and the lower end of the left surface of the connecting shell is connected with a fixed port, and the insertion strip and the fixed port are inserted and connected.
[0006] Preferably, guide columns are connected to the left and right sides of the upper surface of the push plate, and the upper ends of the guide columns extend to the upper ends through the movable mold base plate.
[0007] Preferably, a contact surface between the connecting shell and the unlocking push plate is provided with a slope parallel to the unlocking push plate.
[0008] Preferably, a limiting block is arranged on the right side inside the connecting shell, and the left side surface of the limiting block is parallel to the unlocking push plate when it is twisted to the right side.
[0009] Preferably, chamfers are provided around the outer side of the insert strip and around the outer side of the opening of the fixing port.
[0010] Preferably, the slot on the left side inside the connecting shell is in an arc shape, the outer side of the fixed rotating plate is in an arc shape, and the arc on the outer side of the fixed rotating plate has the same diameter as the slot on the left side inside the connecting shell.
[0011] Preferably, a spring is sleeved around the outer side of the guide column.
[0012] The utility model provides a plastic mold with a limiting structure and convenient for reinforcement, which has at least the following beneficial effects compared with the prior art:
[0013] 1. The plastic mold has a limiting structure and is easy to reinforce. When the rear mold core and the front mold core are fitted together, the slope on the outside will play a guiding role, allowing the original angle with some deviation to be corrected.
[0014] 2. The plastic mold with a limiting structure and easy to reinforce, when the mold is closed, the fixed rotating plate and the connecting shell are self-locked to fix the positions of the movable mold base plate and the fixed mold base plate to prevent the movable mold base plate from being squeezed and pushed by pressure. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of the utility model;
[0016] Figure 2 This is a cross-sectional view of the utility model;
[0017] Figure 3 This is a bottom view of the utility model;
[0018] Figure 4 This is a cross-sectional view of the connection structure of the utility model;
[0019] Figure 5 This is an enlarged view of the interior of the connection structure of the utility model.
[0020] In the figure: 1. Base; 2. Push plate; 3. Push pin; 4. Moving mold base plate; 5. Rear mold core; 6. Guide column; 7. Fixed mold base plate; 8. Guide hole; 9. Front mold core; 10. Connecting shell; 11. Fixed rotating plate; 12. Unlocking push plate; 13. Reset spring; 14. Insert strip; 15. Fixing port; 21. Guide column; 22. Limit block; 23. Spring. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions 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.
[0022] See also Figure 1-5The utility model provides a technical solution: a plastic mold with a limiting structure and easy to reinforce, comprising: a base 1, a push plate 2 is inserted and connected in the middle of the base 1, a push pin 3 is fixedly connected to the upper end of the push plate 2, a movable mold seat plate 4 is connected to the upper end of the base 1, a rear mold core 5 is inserted and connected inside the upper surface of the movable mold seat plate 4, the push pin 3 passes through the movable mold seat plate 4 and extends to the upper end of the rear mold core 5, the four corners of the upper surface of the movable mold seat plate 4 are connected to guide pillars 6, a fixed mold seat plate 7 is arranged on the upper end of the guide pillar 6, guide holes 8 are opened at the four corners of the fixed mold seat plate 7 relative to the guide pillar 6, the guide pillar 6 is inserted and connected to the guide hole 8, and the lower end of the fixed mold seat plate 7 is inserted and connected A front mold core 9 is connected, and guide slopes are provided on the outer side of the rear mold core 5 and the outer side of the lower end of the front mold core 9. The movable mold base plate 4 and the fixed mold base plate 7 are both connected with an internal hollow connecting shell 10 on both the front and rear sides. A fixed rotating plate 11 is rotatably connected to the left side of the connecting shell 10. An unlocking push plate 12 is connected to the right end of the fixed rotating plate 11. The unlocking push plate 12 is tangent to the lower left end of the fixed rotating plate 11. A return spring 13 is connected between the left side of the lower end of the unlocking push plate 12 and the inside of the connecting shell 10. An insert strip 14 is connected to the right side of the upper surface of the connecting shell 10. A fixed port 15 is connected to the lower end of the left surface of the connecting shell 10, and the insert strip 14 and the fixed port 15 are inserted and connected.
[0023] When in use, place the push plate 2 in the middle of the base 1, place the rear mold core 5 in the inside of the movable mold base plate 4, place the movable mold base plate 4 on the upper end of the base 1, connect the movable mold base plate 4 and the base 1 with bolts, insert the push pin 3 on the push plate 2 into the inside of the movable mold base plate 4 and the rear mold core 5, then place the front mold core 9 into the inside of the fixed mold base plate 7, align the guide holes 8 at the four corners of the fixed mold base plate 7 with the guide pillars 6, insert them into each other, and the installation is completed. The base 1 is installed with the fixed mold end of the injection molding machine, and the fixed mold base plate 7 is installed with the injection port. When the mold is closed, the guide slopes on the outer side of the rear mold core 5 and the outer side of the lower end of the front mold core 9 will guide the rear mold core 5 and the front mold core 9 to ensure that the position between the rear mold core 5 and the front mold core 9 is not deviated. At the same time, the connecting shell 10 will move with the movable mold base plate 4. At this time, the insert 14 will be pushed along the opposite side of the connecting shell 10, and the insert 14 will push the fixed rotating plate 11 to a position parallel to one side of the connecting shell 10. When the insert 14 is completely After being inserted into the fixing opening 15, the two fixing rotating plates 11 will be in the slotted position inside the connecting shell 10. At this time, the reset spring 13 pulls the unlocking push plate 12 to restore the fixing rotating plates 11 to the tilted state, and the tilted position will be in the internal slot of the connecting shell 10 that cooperates therewith, thereby fixing the position of the movable mold base plate 4 and the fixed mold base plate 7. When opening the mold, push the unlocking push plate 12 in the reverse direction, adjust the fixing rotating plate 11 to a position parallel to one side of the connecting shell 10, and then pull the movable mold base plate 4 outward to pull out the movable mold base plate 4.
[0024] like Figure 1-3 As shown, the embodiment of the utility model provides an implementation method. Based on the above implementation method, guide columns 21 are connected to the left and right sides of the upper surface of the push plate 2, and the upper ends of the guide columns 21 pass through the movable mold base plate 4 and extend to the upper end.
[0025] From the analysis of the above structure, it can be known that the guide column 21 can play an auxiliary guiding role for the push plate 2 when it is pushed, thereby preventing the push plate 2 from being offset.
[0026] like Figure 1-5 As shown, the embodiment of the utility model provides an implementation method. Based on the above implementation method, the contact surface between the connecting shell 10 and the unlocking push plate 12 is provided with a slope parallel to the unlocking push plate 12 .
[0027] From the analysis of the above structure, it can be seen that when the unlocking push plate 12 is in a normal fixed position, the slope formed on the contact surface connecting the housing 10 and the unlocking push plate 12 can increase the contact area and reduce the local force on the push plate 12.
[0028] like Figure 1-5 As shown, an embodiment of the utility model provides an implementation method. Based on the above implementation method, a limit block is set on the right side inside the connecting shell 10, and the left surface of the limit block is parallel to the unlocking push plate 12 twisted to the right position.
[0029] From the analysis of the above structure, it can be known that when the mold needs to be separated, the unlocking push plate 12 is pushed to the left surface of the limit block. At this time, the right side of the fixed rotating plate 11 will be parallel to the connecting shell 10, preventing the fixed rotating plate 11 from being pushed excessively, causing the other end of the fixed rotating plate 11 to be inserted into the interior of the connecting shell 10 again, making it inconvenient to remove.
[0030] like Figure 1-5 As shown, the embodiment of the utility model provides an implementation method. Based on the above implementation method, the outer periphery of the inserting strip 14 and the outer periphery of the opening of the fixing port 15 are both chamfered.
[0031] From the analysis of the above structure, it can be known that the chamfers formed on the outer side of the inserting strip 14 and the outer side of the opening of the fixing opening 15 can play a guiding role, making it easier for the inserting strip 14 to be inserted into the fixing opening 15 .
[0032] like Figure 1-5 As shown, an embodiment of the utility model provides an implementation method. Based on the above implementation method, the groove on the left side inside the connecting shell 10 is arc-shaped, and the outer side of the fixed rotating plate 11 is arc-shaped. The arc on the outer side of the fixed rotating plate 11 has the same diameter as the groove on the left side inside the connecting shell 10.
[0033] From the analysis of the above structure, it can be known that when the fixed rotating plate 11 rotates in the slot on the left side of the connecting shell 10, the fixed rotating plate 11 will be tightly attached to the inside of the connecting shell 10, and when the fixed rotating plate 11 cooperating therewith is rotated and fastened, when it reaches the trigger point of fastening, it will rotate downward along the arc line to reduce the gap during cooperation.
[0034] like Figure 1-5 As shown, the embodiment of the utility model provides an implementation method. Based on the above implementation method, a spring 22 is sleeved around the outer side of the guide column 21.
[0035] From the analysis of the above structure, it can be known that when the push plate 2 is pushed out and the push pin 3 pushes the plastic part out, the spring 23 is in a compressed state. When the push rod at the rear end retracts, the spring 22 pushes the push plate 2 to its original position.
[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A plastic mold with a limiting structure and easy to reinforce, characterized in that: include: A base (1), wherein a push plate (2) is inserted and connected in the middle of the base (1), a push pin (3) is fixedly connected to the upper end of the push plate (2), the upper end of the base (1) is connected to a movable mold base plate (4), a rear mold core (5) is inserted and connected inside the upper surface of the movable mold base plate (4), the push pin (3) passes through the movable mold base plate (4) and extends to the upper end of the rear mold core (5), the four corners of the upper surface of the movable mold base plate (4) are connected to guide pillars (6), the upper ends of the guide pillars (6) are provided with fixed mold base plates (7), the four corners of the fixed mold base plate (7) are provided with guide holes (8) at positions relative to the guide pillars (6), the guide pillars (6) and the guide holes (8) are inserted and connected, the lower end of the fixed mold base plate (7) is inserted and connected to the front mold core (9), the outer The outer sides of the lower ends of the side and front mold core (9) are both provided with guide slopes, the front and rear sides of the movable mold base plate (4) and the fixed mold base plate (7) are both connected to an internal hollow connection shell (10), the left side of the connection shell (10) is rotatably connected to a fixed rotating plate (11), the right end of the fixed rotating plate (11) is connected to an unlocking push plate (12), the unlocking push plate (12) is tangent to the lower end of the left side of the fixed rotating plate (11), a return spring (13) is connected between the left side of the lower end of the unlocking push plate (12) and the inside of the connection shell (10), the right side of the upper surface of the connection shell (10) is connected to an insertion strip (14), the lower end of the left surface of the connection shell (10) is connected to a fixing port (15), and the insertion strip (14) and the fixing port (15) are inserted and connected.
2. A plastic mold with a limiting structure and easy to reinforce according to claim 1, characterized in that: Guide columns (21) are connected to the left and right sides of the upper surface of the push plate (2), and the upper ends of the guide columns (21) pass through the movable mold base plate (4) and extend to the upper end.
3. A plastic mold with a limiting structure and easy to reinforce according to claim 1, characterized in that: The contact surface between the connecting housing (10) and the unlocking push plate (12) is provided with a slope parallel to the unlocking push plate (12).
4. A plastic mold with a limiting structure and easy to reinforce according to claim 1, characterized in that: A limit block is arranged on the right side of the interior of the connection housing (10), and the left side surface of the limit block is parallel to the unlocking push plate (12) when it is twisted to the right side.
5. A plastic mold with a limiting structure and easy to reinforce according to claim 1, characterized in that: The outer periphery of the insert strip (14) and the outer periphery of the opening of the fixing opening (15) are both chamfered.
6. A plastic mold with a limiting structure and easy to reinforce according to claim 1, characterized in that: The left side opening of the connecting shell (10) is in the shape of an arc, the outer side of the fixed rotating plate (11) is in the shape of an arc, and the arc on the outer side of the fixed rotating plate (11) has the same diameter as the left side opening of the connecting shell (10).
7. A plastic mold with a limiting structure and easy to reinforce according to claim 2, characterized in that: A spring (22) is sleeved around the outer side of the guide column (21).