Plastic mold capable of preventing dead lock
By introducing a butt block and a butt snap ring into the plastic mold guide column assembly, the locking problem caused by deformation of the guide column is solved, the workpiece is demolded smoothly, and the normal separation of the mold is ensured.
Patent Information
- Application Number
- CN202510624656.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-15
- Publication Date
- 2025-06-20
AI Technical Summary
The existing plastic mold guide columns have changed shapes due to long-term use, resulting in a decrease in guiding accuracy and the inability to maintain accurate positioning, resulting in the plastic products being stuck and unable to be removed smoothly.
A plastic mold that can be locked is designed. By introducing a butt block and a butt snap ring into the guide column assembly, the butt block is fixed or disengaged by the rotation of the butt snap ring, the disconnection of the guide column assembly and the lower mold are realized, ensuring that the upper mold can move up normally and the mold release of the workpiece is realized.
It realizes that the guide column assembly can be disconnected from the lower mold when it is deformed, ensuring that the workpiece can be demolded smoothly, and avoid exhaust system failure through the ventilation groove, ensuring normal separation of the mold.
Smart Images
Figure CN120170987A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of molds, and specifically relates to a plastic mold that can prevent locking. Background Art
[0002] Plastic molds are important tools in the plastic processing industry for imparting complete configurations and precise dimensions to plastic products. Plastic molds are composed of several groups of parts, and these parts contain a forming cavity. During the injection molding process, the mold is clamped on an injection molding machine, molten plastic is injected into the forming cavity, and it cools and solidifies in the cavity. Then, the upper and lower molds are separated, and the product is ejected from the cavity via an ejection system. Finally, the mold closes for the next injection molding. Mold guide pillars are used in combination with components in the mold to ensure that the mold moves with precise positioning and guide the stroke of the mold. During long-term use, due to frequent friction and wear, the shape of the mold guide pillar may change. After the deformation of the mold guide pillar, its guiding accuracy will decrease, resulting in the inability to maintain precise positioning during the opening and closing of the mold. This may cause the plastic product to be stuck in the mold. At the same time, the existing guide pillars and molds are usually connected by various fixing methods such as direct pressing, tightening and fixing, riveting and fixing, and welding. These methods cannot be disassembled, so the product cannot be smoothly demolded. Therefore, a plastic mold that can prevent locking is proposed. Summary of the Invention
[0003] To solve the problems raised in the above background art, the present invention provides a plastic mold that can prevent locking, which solves the problem that the existing guide pillars and molds are usually connected by a fixed connection method, and cannot be disassembled, resulting in the deformation of the guide pillars and the inability to demold.
[0004] To achieve the above object, the present invention provides the following technical solution: A plastic mold that can prevent locking, including a lower mold and an upper mold, the lower mold and the upper mold are combined to form a mold, and further includes: A fixing component, which is fixedly installed on the lower mold; A guide pillar component, which is installed on the fixing component; A docking component, which is installed on the upper mold; Among them, the fixing component includes a docking frame fixedly installed on the lower mold. A first docking hole is opened in the middle of the docking frame. A docking clamping ring is movably sleeved inside the first docking hole. A dial rod is fixedly installed outside the docking clamping ring. A limiting groove for the dial rod to slide is opened outside the docking frame. A second docking hole with the same shape as the first docking hole is opened in the middle of the docking clamping ring; The guide pillar component includes a docking block sleeved inside the second docking hole and the first docking hole. A second docking plate is fixedly installed on the top of the docking block; The top of the second docking plate is provided with sector-shaped rods in a circular array by bolts, and the sector-shaped rods are combined to form a mold guide post.
[0005] Preferably, the upper and lower ends of the docking block are adapted to the second docking hole and the first docking hole, and the middle part of the docking block is cylindrical; In the initial state, the first docking hole coincides with the second docking hole, the docking block is sleeved in the first docking hole and the second docking hole, and the docking block is clamped in the docking frame by rotating the docking snap ring.
[0006] Preferably, the docking assembly is sleeved outside the sector-shaped rod that forms the guide post; When the sector-shaped rod is deformed, by rotating the docking snap ring in the reverse direction, the second docking hole coincides with the first docking hole, and the docking block can be disengaged from the inside of the docking frame.
[0007] Preferably, the fixing assembly further includes a ventilation groove opened outside the docking snap ring; The inside of the docking frame is communicated with the inside of the lower mold, and the communication part is blocked by the docking snap ring.
[0008] Preferably, the ventilation groove coincides with the limiting groove; When the second docking hole coincides with the first docking hole, one end of the ventilation groove is communicated with the inside of the lower mold, and the other end is located inside the ventilation groove; By rotating the docking snap ring, one end of the ventilation groove is disengaged from the communication with the inside of the lower mold.
[0009] Preferably, the docking assembly includes a first docking plate fixedly installed on the upper mold, a limiting ring fixedly installed at the bottom of the first docking plate, a sliding groove opened at the bottom of the first docking plate, a stabilizing plate slidably arranged inside the sliding groove, and a lug fixedly installed at the upper end of the stabilizing plate.
[0010] Preferably, the lugs are in contact with each other to form a hollow cylinder, and a stabilizing rod is fixedly installed at the bottom of the first docking plate; When the upper mold moves downward, the sector-shaped rod is sleeved between the stabilizing plate and the stabilizing rod.
[0011] Preferably, the docking assembly further includes a vertical sliding groove opened on the inner wall of the limiting ring, a docking ring movably sleeved inside the limiting ring, and the docking ring is movably arranged in the vertical sliding groove through a slider; A contact convex block is fixedly installed on the inner wall of the docking ring, a groove is opened on the periphery of the lug, a pushing block is movably sleeved at the bottom of the docking ring, and the pushing block is threadedly connected with the limiting ring.
[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, the docking block is placed in the first docking hole and the second docking hole, and the lever and the docking collar are rotated. By rotating the docking collar, the docking block is fixed inside the docking frame. At this time, the upper mold moves downward to contact the lower mold to form a plastic mold, and the upper mold moves downward to sleeved outside the guide post formed by the sector rod. When the guide post formed by the sector rod deforms during the injection molding process, the docking collar is rotated to disengage the docking block from inside the docking frame, realizing that the guide post assembly disconnects from the lower mold, and the upper mold can move upward normally to demold the workpiece. At the same time, the sector rod is separated from the second docking plate, thereby facilitating the sector rod to be disengaged from inside the docking assembly one by one; In the present invention, by rotating the lever and the docking collar to release the limit on the docking block, at this time, the docking block can be disengaged from inside the docking frame, thereby realizing the separation of the guide post assembly from the lower mold. During the rotation of the docking collar, one end of the ventilation groove is inside the lower mold, and the external gas enters the lower mold through the ventilation groove, avoiding the failure of the exhaust system and resulting in a negative pressure state in the cavity, ensuring that the upper mold and the lower mold can be separated normally; In the present invention, the stabilizing plates contact each other to form a hollow cylinder. The pushing block is rotated to push the docking ring so that the abutting convex block is located in the groove outside the lug. The stabilizing plates are limited by the abutting convex block. When the upper mold moves downward, the sector rod is sleeved between the stabilizing plate and the stabilizing rod. When the sector rod deforms, the guide post assembly disconnects from the lower mold. At the same time, the pushing block is rotated in the reverse direction to pull the docking ring and the abutting convex block downward, which can expand the inner diameter between the stabilizing plates. At the same time, the sector rod disconnects from the second docking plate, making it more convenient for the sector rod to be disengaged from inside the docking assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic diagram of the overall external structure of the present invention; Figure 2 is a schematic diagram of the disassembled structure of the lower mold and the upper mold of the present invention; Figure 3 is a schematic diagram of the sectional structure of the docking assembly, the guide post assembly and the fixing assembly of the present invention; Figure 4 is a schematic diagram of the sectional mating structure of the docking assembly of the present invention; Figure 5 is a schematic diagram of the disassembled structure of the docking assembly and the guide post assembly of the present invention; Figure 6 is a schematic diagram of the disassembled structure of the docking assembly of the present invention; Figure 7 is a schematic diagram of the disassembled structure of the fixing assembly and the guide post assembly of the present invention; Figure 8 is a schematic diagram of the sectional structure of the fixing assembly of the present invention.
[0014] In the figure: 1. lower mold; 2. upper mold; 3. docking assembly; 31. first docking plate; 32. slide groove; 33. push block; 34. limit ring; 35. stabilizing rod; 36. stabilizing plate; 37. lug; 38. slider; 39. docking ring; 30. abutting protrusion; 4. guide column assembly; 41. second docking plate; 42. fan-shaped rod; 43. docking block; 5. fixing assembly; 51. docking frame; 52. lever; 53. docking clamp; 54. limit groove; 55. first docking hole; 56. second docking hole; 57. ventilation groove. DETAILED DESCRIPTION
[0015] 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 described embodiments 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 creative work are within the scope of protection of the present invention.
[0016] like Figures 1 to 8 As shown, the present invention provides a plastic mold capable of preventing locking, comprising a lower mold 1 and an upper mold 2, wherein the lower mold 1 and the upper mold 2 are combined to form a mold, and further comprising: A fixing assembly 5, the fixing assembly 5 is fixedly mounted on the lower mold 1; A guide column assembly 4, wherein the guide column assembly 4 is mounted on the fixing assembly 5; A docking assembly 3, the docking assembly 3 is installed on the upper mold 2; The fixing assembly 5 comprises a docking frame 51 fixedly mounted on the lower mold 1, a first docking hole 55 is provided in the middle of the docking frame 51, a docking clamp 53 is movably sleeved inside the first docking hole 55, a lever 52 is fixedly mounted outside the docking clamp 53, a limiting groove 54 is provided outside the docking frame 51 for the lever 52 to slide, and a second docking hole 56 having the same shape as the first docking hole 55 is provided in the middle of the docking clamp 53; The guide column assembly 4 includes a docking block 43 sleeved inside the second docking hole 56 and the first docking hole 55, and a second docking plate 41 is fixedly mounted on the top of the docking block 43; The top of the second docking plate 41 is provided with a fan-shaped rod 42 through a bolt annular array, and the fan-shaped rod 42 is combined to form a mold guide column; The upper and lower ends of the docking block 43 are matched with the second docking hole 56 and the first docking hole 55, and the middle part of the docking block 43 is cylindrical; In the initial state, the first docking hole 55 and the second docking hole 56 overlap, and the docking block 43 is sleeved in the first docking hole 55 and the second docking hole 56. The docking block 43 is engaged in the docking frame 51 by rotating the docking clamp ring 53; The docking assembly 3 is sleeved on the outside of the guide column formed by the fan-shaped rod 42; When the sector rod 42 is deformed, by reversely rotating the docking collar 53, the second docking hole 56 coincides with the first docking hole 55, and the docking block 43 can be disengaged from the inside of the docking frame 51.
[0017] Adopting the above scheme: by making the second docking hole 56 coincide with the first docking hole 55, the sector rod 42 is installed on the second docking plate 41 with bolts to form a mold guide post. The docking block 43 is placed in the first docking hole 55 and the second docking hole 56, and the lever 52 and the docking collar 53 are rotated. By rotating the docking collar 53, the docking block 43 is fixed inside the docking frame 51. At this time, the upper mold 2 moves down to contact the lower mold 1 to form a plastic mold, and the upper mold 2 moves down and sleeves on the outside of the sector rod 42 that forms the guide post, achieving the purpose of limiting the lower mold 1 and the upper mold 2. During the injection molding process, when the guide post formed by the sector rod 42 is deformed, rotate the docking collar 53 to disengage the docking block 43 from the inside of the docking frame 51, so that the guide post assembly 4 is disconnected from the lower mold 1. The upper mold 2 can move up normally to realize workpiece demoulding. At the same time, the sector rod 42 is separated from the second docking plate 41, so that the sector rod 42 can be disengaged from the inside of the docking assembly 3 one by one, and then the sector rod 42 can be replaced.
[0018] Such as Figure 7 And Figure 8 As shown, the fixing component 5 further includes a ventilation groove 57 opened outside the docking collar 53. The inside of the docking frame 51 is communicated with the inside of the lower mold 1, and the communication part is blocked by the docking collar 53. The ventilation groove 57 coincides with the limiting groove 54. When the second docking hole 56 coincides with the first docking hole 55, one end of the ventilation groove 57 is communicated with the inside of the lower mold 1, and the other end is located inside the ventilation groove 57. Rotate the docking collar 53, and one end of the ventilation groove 57 is disengaged from the communication with the inside of the lower mold 1.
[0019] Adopting the above scheme: by moving the upper mold 2 down to contact the lower mold 1 to form a mold. During the injection molding process, when the guide post is deformed or the exhaust system fails, at this time, by rotating the lever 52 and the docking collar 53 to release the limit on the docking block 43. At this time, the docking block 43 and the docking block 43 can be disengaged from the inside of the docking frame 51, and then the guide post assembly 4 is separated from the lower mold 1. During the rotation of the docking collar 53, one end of the ventilation groove 57 is communicated with the inside of the lower mold 1, and the outside air enters the inside of the lower mold 1 through the ventilation groove 57, avoiding the negative pressure state in the cavity caused by the exhaust system failure, and ensuring that the upper mold 2 and the lower mold 1 can be separated normally.
[0020] Such as Figures 3 - 6As shown in the figure, the docking component 3 includes a first docking plate 31 fixedly installed on the upper mold 2. A limit ring 34 is fixedly installed at the bottom of the first docking plate 31. A chute 32 is opened at the bottom of the first docking plate 31. A stabilizing plate 36 is slidably arranged inside the chute 32. An ear 37 is fixedly installed at the upper end of the stabilizing plate 36; The ears 37 are in contact with each other to form a hollow cylinder. A stabilizing rod 35 is fixedly installed at the bottom of the first docking plate 31; When the upper mold 2 moves downward, the sector rod 42 is sleeved between the stabilizing plate 36 and the stabilizing rod 35; The docking component 3 further includes a vertical chute opened on the inner wall of the limit ring 34. A docking ring 39 is movably sleeved inside the limit ring 34. The docking ring 39 is movably arranged in the vertical chute through a slider 38; A contact convex block 30 is fixedly installed on the inner wall of the docking ring 39. A groove is opened on the periphery of the ear 37. A pushing block 33 is movably sleeved at the bottom of the docking ring 39. The pushing block 33 is threadedly connected to the limit ring 34.
[0021] Adopting the above scheme: by the stabilizing plates 36 being in contact with each other to form a hollow cylinder, rotating the pushing block 33 to push the docking ring 39 so that the contact convex block 30 is located in the groove outside the ear 37, limiting the stabilizing plate 36 through the contact convex block 30. When the upper mold 2 moves downward and the sector rod 42 is sleeved between the stabilizing plate 36 and the stabilizing rod 35, when the sector rod 42 deforms, the guide post assembly 4 is disengaged from the connection with the lower mold 1. At the same time, rotating the pushing block 33 in the reverse direction to pull the docking ring 39 and the contact convex block 30 downward can expand the inner diameter between the stabilizing plates 36. At the same time, the sector rod 42 is disconnected from the second docking plate 41, which is more convenient for the sector rod 42 to be disengaged from the inside of the docking component 3 for replacement.
[0022] The working principle and usage process of the present invention: By aligning the second docking hole 56 with the first docking hole 55, the sector rod 42 is installed on the second docking plate 41 with bolts to form a mold guide post. The docking block 43 is placed in the first docking hole 55 and the second docking hole 56, and the dial rod 52 and the docking snap ring 53 are rotated. By rotating the docking snap ring 53, the docking block 43 is fixed inside the docking frame 51. At this time, the upper mold 2 moves downward to contact the lower mold 1 to form a plastic mold. The upper mold 2 moves downward and is sleeved outside the sector rod 42 that forms the guide post, achieving the purpose of limiting the lower mold 1 and the upper mold 2; During the injection molding process, when the guide post formed by the sector rod 42 deforms, rotate the docking snap ring 53 to disengage the docking block 43 from the inside of the docking frame 51, realizing that the guide post assembly 4 is disconnected from the connection with the lower mold 1. The upper mold 2 can move upward normally to achieve workpiece demoulding. At the same time, separate the sector rod 42 from the second docking plate 41, thereby facilitating the sector rod 42 to be disengaged from the inside of the docking component 3 one by one; The stabilizing plates 36 are in contact with each other to form a hollow cylinder, and the push block 33 is rotated to push the docking ring 39 so that the abutting protrusion 30 is located in the groove outside the lug 37. The stabilizing plate 36 is limited by the abutting protrusion 30, and the fan-shaped rod 42 is moved downward by the upper mold 2 to be sleeved between the stabilizing plate 36 and the stabilizing rod 35. When the fan-shaped rod 42 is deformed, the guide column assembly 4 is disconnected from the lower mold 1, and the push block 33 is rotated in the opposite direction to pull the docking ring 39 and the abutting protrusion 30 downward, so as to expand the inner diameter between the stabilizing plate 36, and at the same time, the fan-shaped rod 42 is disconnected from the second docking plate 41, which makes it easier for the fan-shaped rod 42 to be disconnected from the inside of the docking assembly 3 for replacement; At the same time, the lever 52 and the docking clamp ring 53 are rotated to disengage from the limit of the docking block 43. At this time, the docking block 43 and the docking block 43 can be separated from the inside of the docking frame 51, thereby realizing the separation of the guide column assembly 4 and the lower mold 1. During the rotation of the docking clamp ring 53, one end of the ventilation groove 57 is connected to the interior of the lower mold 1, and the external gas enters the interior of the lower mold 1 through the ventilation groove 57, avoiding the failure of the exhaust system, resulting in a negative pressure state in the cavity, and ensuring that the upper mold 2 and the lower mold 1 can be separated normally.
[0023] 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.
[0024] 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 capable of preventing locking, comprising a lower mold (1) and an upper mold (2), wherein the lower mold (1) and the upper mold (2) are combined to form a mold, characterized in that: Also includes: A fixing assembly (5), wherein the fixing assembly (5) is fixedly mounted on the lower mold (1); A guide column assembly (4), wherein the guide column assembly (4) is mounted on the fixing assembly (5); A docking assembly (3), the docking assembly (3) being mounted on the upper mold (2); The fixing assembly (5) comprises a docking frame (51) fixedly mounted on the lower mold (1), a first docking hole (55) is provided in the middle of the docking frame (51), a docking clamp (53) is movably sleeved inside the first docking hole (55), a lever (52) is fixedly mounted outside the docking clamp (53), a limiting groove (54) for the lever (52) to slide is provided outside the docking frame (51), and a second docking hole (56) having the same shape as the first docking hole (55) is provided in the middle of the docking clamp (53); The guide column assembly (4) comprises a docking block (43) sleeved inside the second docking hole (56) and the first docking hole (55), and a second docking plate (41) is fixedly mounted on the top of the docking block (43); The top of the second docking plate (41) is provided with fan-shaped rods (42) via a bolt annular array, and the fan-shaped rods (42) are combined to form a mold guide column.
2. The anti-locking plastic mold according to claim 1, characterized in that: The upper and lower ends of the docking block (43) are adapted to the second docking hole (56) and the first docking hole (55), and the middle portion of the docking block (43) is cylindrical; In an initial state, the first docking hole (55) and the second docking hole (56) overlap, the docking block (43) is sleeved in the first docking hole (55) and the second docking hole (56), and the docking block (43) is engaged in the docking frame (51) by rotating the docking clamp ring (53).
3. The anti-locking plastic mold according to claim 2, characterized in that: The docking assembly (3) is sleeved on the outside of the guide column formed by the fan-shaped rod (42); When the fan-shaped rod (42) is deformed, the docking clamp (53) is rotated in the opposite direction so that the second docking hole (56) overlaps with the first docking hole (55), and the docking block (43) can be separated from the interior of the docking frame (51).
4. The anti-locking plastic mold according to claim 1, characterized in that: The fixing assembly (5) further comprises a ventilation groove (57) formed outside the docking clamp ring (53); The interior of the docking frame (51) is connected to the interior of the lower mold (1), and the connection is sealed by a docking clamp ring (53).
5. The anti-locking plastic mold according to claim 4, characterized in that: The ventilation groove (57) overlaps with the limiting groove (54); When the second docking hole (56) overlaps with the first docking hole (55), one end of the venting groove (57) is connected to the interior of the lower mold (1), and the other end is located inside the venting groove (57); By rotating the docking clamp ring (53), one end of the vent groove (57) is disconnected from the interior of the lower mold (1) and communicated with the interior of the lower mold (1).
6. The anti-locking plastic mold according to claim 1, characterized in that: The docking assembly (3) comprises a first docking plate (31) fixedly mounted on the upper mold (2), a limit ring (34) fixedly mounted on the bottom of the first docking plate (31), a slide groove (32) provided at the bottom of the first docking plate (31), a stabilizing plate (36) slidably disposed inside the slide groove (32), and a lug (37) fixedly mounted on the upper end of the stabilizing plate (36).
7. The anti-locking plastic mold according to claim 6, characterized in that: The lugs (37) contact each other to form a hollow cylinder, and a stabilizing rod (35) is fixedly mounted on the bottom of the first docking plate (31); The upper mold (2) moves downward and the fan-shaped rod (42) is sleeved between the stabilizing plate (36) and the stabilizing rod (35).
8. The anti-locking plastic mold according to claim 7, characterized in that: The docking assembly (3) further comprises a vertical slide groove formed on the inner wall of the limiting ring (34); a docking ring (39) is movably sleeved inside the limiting ring (34); and the docking ring (39) moves in the vertical slide groove via a slider (38); The inner wall of the docking ring (39) is fixedly provided with a resisting protrusion (30), the outer periphery of the lug (37) is provided with a groove, and the bottom of the docking ring (39) is movably sleeved with a pushing block (33), and the pushing block (33) is threadedly connected to the limiting ring (34).