An improved O-ring sealing mold

Abstract

The present invention proposes an improved O-ring sealing mold, including an upper template and a lower template arranged up and down; the upper template is provided with a plurality of upper mold cavity areas at the bottom, the upper mold cavity area is in a circular structure, and an upper glue injection port is provided at the center of the upper mold cavity area, and a plurality of upper mold cavities are evenly provided in the upper mold cavity area; the lower template is provided with a plurality of lower mold cavity areas at the top, the lower mold cavity area is in a circular structure, and a lower glue injection port is provided at the center of the lower mold cavity area, and a plurality of lower mold cavities are evenly provided in the lower mold cavity area, and any two adjacent lower mold cavities are connected by a connecting groove, and the lower mold cavity area is also provided with a plurality of glue injection grooves arranged around the lower glue injection port and connected to the lower glue injection port, and the glue injection groove is connected to the lower mold cavity located on the inner side at one end away from the lower glue injection port. The upper mold cavity area and the lower mold cavity area of ​​the present invention are both distributed in a circular shape, and two adjacent lower mold cavities are connected together by a connecting groove, and the upper glue injection port and the lower glue injection port are located at the center of the circle. When the glue material is injected, it diverges from the center of the circle to the circumference, which is more suitable for flow.

Description

Technical Field

[0001] The invention relates to the technical field of sealing ring moulds, in particular to an improved O-type sealing ring mould. Background Art

[0002] The traditional O-ring rubber seal mold is a molded tearing structure. The preformed rubber strip is manually placed between the upper and lower templates and is pressed and formed by the mold closing. The preformed rubber strip needs to be prepared in advance, and the auxiliary time and vulcanization time are long. The product flash is thick and the unit consumption is high. Manual demoulding requires manual tearing of the flash and machine sanding. The manual tearing process is inefficient, costly, and has unstable product quality. Summary of the invention

[0003] Based on the technical problems existing in the background technology, the present invention proposes an improved O-ring mold.

[0004] The improved O-ring sealing mold proposed by the present invention comprises an upper template and a lower template arranged up and down; a plurality of upper mold cavity areas are arranged at the bottom end of the upper template, the upper mold cavity area is in a circular structure and an upper glue injection port is opened at the center of the upper mold cavity area, and a plurality of upper mold cavities are evenly opened in the upper mold cavity area; a plurality of lower mold cavity areas are arranged at the top end of the lower template, the lower mold cavity area is in a circular structure and a lower glue injection port is opened at the center of the lower mold cavity area, and a plurality of lower mold cavities are evenly opened in the lower mold cavity area, and any two adjacent lower mold cavities are connected by a connecting groove, and a plurality of glue injection grooves arranged around the lower glue injection port and connected to the lower glue injection port are also arranged in the lower mold cavity area, and the glue injection groove is connected to the lower mold cavity located on the inner side at one end away from the lower glue injection port; in the mold closing state, the plurality of lower mold cavity areas are respectively arranged in one-to-one correspondence with the plurality of upper mold cavity areas, the lower glue injection ports of the lower mold cavity areas are correspondingly connected with the upper glue injection ports of the corresponding upper mold cavity areas, and the plurality of lower mold cavities of the lower mold cavity area are respectively matched with the plurality of upper mold cavities of the corresponding upper mold cavity area to form a plurality of O-ring sealing molding cavities.

[0005] Preferably, a plurality of upper mold cavity rings are provided in the upper mold cavity area and are arranged concentrically with the upper injection port, and the upper mold cavity rings are formed by a plurality of upper mold cavities uniformly distributed on the circumference.

[0006] Preferably, a plurality of lower mold cavity rings are arranged concentrically with the lower injection port in the lower mold cavity area, and the lower mold cavity ring is formed by a plurality of lower mold cavities evenly distributed circumferentially. Any two adjacent lower mold cavities of the same lower mold cavity ring are connected by a connecting groove, and the lower mold cavity of the inner lower mold cavity ring is connected to the lower mold cavity of the outer lower mold cavity ring through a connecting groove.

[0007] Preferably, a mounting groove arranged around the plurality of lower mold cavity areas is also formed at the top of the lower mold plate, and a rubber sealing ring is installed in the mounting groove.

[0008] Preferably, a cold runner assembly is also included, and the cold runner assembly includes a runner plate assembly and a plurality of sub-gate assemblies installed inside the runner plate assembly and respectively used for injecting glue into the plurality of upper glue injection ports.

[0009] Preferably, the runner plate assembly includes a runner plate, a heat insulation plate, and a heating plate arranged in sequence from top to bottom, the heating plate is assembled together with the upper mold plate, a glue injection channel for conveying glue to multiple sub-gate assemblies is provided inside the runner plate, an upper cooling circulation loop for the entry and flow of a cooling medium is provided inside the runner plate and above the glue injection channel, and a lower cooling circulation loop for the entry and flow of a cooling medium is provided inside the runner plate and below the glue injection channel.

[0010] The improved O-ring mold proposed by the present invention adopts a combination of cold runner injection and molding. The upper mold cavity area and the lower mold cavity area are both distributed in a circle. Two adjacent lower mold cavities are connected together by a connecting groove. The upper glue injection port and the lower glue injection port are located at the center of the circle. When injecting, the glue material diverges from the center of the circle to the circumference, which is more suitable for flow. The cold runner system is used to inject the glue material instead of manual feeding. The injection amount is accurate and easy to control, and the preforming process is reduced, the waste glue generated in the traditional hot runner is saved, and the time spent on manual waste glue removal is also saved. The runner of the cold runner system is in a semi-closed state. When injected, the glue material has a fast flow rate and high pressure in the runner, thereby shortening the vulcanization time, and the vulcanization time is reduced from the original 240 seconds to 180 seconds. The particle freezing edge removal structure design is adopted to save glue material, and the particle freezing edge removal efficiency is high, and no manual trimming and sanding are required, thereby reducing labor costs. A robot is used for automatic demoulding and spraying of a demoulding agent. Except for timed feeding, the entire production process does not require manual intervention, thereby saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of an improved O-ring sealing mold proposed by the present invention;

[0012] Figure 2 This is a schematic structural diagram of an upper mold plate in an improved O-ring sealing mold proposed by the present invention;

[0013] Figure 3 The present invention provides a schematic structural diagram of a lower mold plate in an improved O-ring sealing mold. DETAILED DESCRIPTION

[0014] Reference Figure 1-Figure 3 The present invention provides an improved O-ring sealing mold, comprising an upper mold plate 1 and a lower mold plate 2 arranged up and down; wherein:

[0015] A plurality of upper mold cavity areas are provided at the bottom end of the upper mold plate 1. The upper mold cavity area is a circular structure and an upper glue injection port 3 is opened at the center of the upper mold cavity area. A plurality of upper mold cavity rings are arranged concentrically with the upper glue injection port 3 in the upper mold cavity area. The upper mold cavity ring is formed by a plurality of upper mold cavities 4 evenly distributed around the circumference.

[0016] A plurality of lower mold cavity areas are provided at the top of the lower mold plate 2. The lower mold cavity areas are circular in structure and a lower injection port 5 is provided at the center of the lower mold cavity areas. A plurality of lower mold cavity rings are arranged concentrically with the lower injection port 5 in the lower mold cavity area. The lower mold cavity ring is formed by a plurality of lower mold cavities 6 evenly distributed in a circumference. Any two adjacent lower mold cavities 6 of the same lower mold cavity ring are connected through a connecting groove 7. The lower mold cavity 6 of the inner lower mold cavity ring is connected with the lower mold cavity 6 of the outer lower mold cavity ring through a connecting groove 7. A plurality of injection grooves 8 are also provided in the lower mold cavity area, which are arranged around the lower injection port 5 and connected with the lower injection port 5. The injection groove 8 is connected with the inner lower mold cavity 6 at one end away from the lower injection port 5.

[0017] In the mold closing state, multiple lower mold cavity areas are arranged one by one corresponding to multiple upper mold cavity areas, the lower injection port 5 of the lower mold cavity area is correspondingly connected to the upper injection port 3 of the corresponding upper mold cavity area, and the multiple lower mold cavities 6 of the lower mold cavity area are respectively cooperated with the multiple upper mold cavities 4 of the corresponding upper mold cavity area to form multiple O-ring molding cavities.

[0018] In a specific embodiment, a mounting groove arranged around a plurality of lower mold cavity areas is further provided at the top of the lower mold plate 2, and a rubber sealing ring 9 is installed in the mounting groove.

[0019] In a specific embodiment, a cold runner assembly is also included, and the cold runner assembly includes a runner plate assembly and a plurality of sub-gate assemblies 10 installed inside the runner plate assembly and respectively used to inject glue into the plurality of upper glue injection ports 3. The runner plate assembly includes a runner plate 11, a heat insulation plate 12, and a heating plate 13 arranged from top to bottom, and the heating plate 13 is assembled with the upper mold plate 1. A glue injection channel 14 for conveying glue to the plurality of sub-gate assemblies 10 is provided inside the runner plate 11, and an upper cooling circulation loop 15 for the entry and flow of a cooling medium is provided inside the runner plate 11 and located above the glue injection channel 14, and a lower cooling circulation loop 16 for the entry and flow of a cooling medium is provided inside the runner plate 11 and located below the glue injection channel 14.

[0020] The mold of the present invention consists of a cold runner assembly, an upper mold plate 1, and a lower mold plate 2; the cold runner assembly is fixed to the upper hot plate of a vulcanizing press by bolts, the upper mold plate 1 is fixed to the cold runner assembly by bolts, and the lower mold plate 2 is fixed to the lower hot plate of the vulcanizing press by bolts. A molding cavity is provided between the upper mold plate 1 and the lower mold plate 2, and is positioned by precise positioning and guide columns; an airway is provided in the upper mold plate 1, and a rubber sealing ring 9 is provided in the lower mold plate 2 to prevent outside air from entering, and an air pump extracts air from the airway cavity. The present invention adopts a structure combining cold runner injection and molding. The upper mold plate 1 and the lower mold plate 2 open a gap of about 1 mm under the control of the equipment, so that a sealed space is formed between the upper mold plate 1, the lower mold plate 2 and the rubber sealing ring 9, and the air pump starts to work to evacuate; when the vacuum meets the requirement, the cold runner assembly injects the rubber material, and the rubber material flows divergently from the center of the circle to the circumference along the gap; after the injection is completed, the upper mold plate 1 and the lower mold plate 2 are closed under the control of the equipment, and the extruded rubber material continues to flow radially until it fills the entire molding cavity; after a certain period of time, the vulcanization is completed, the mold is opened under the control of the vulcanization equipment, and the lower mold plate 2 is pushed out together with the lower hot plate of the vulcanizing press. At this time, the manipulator installed on the upper side moves downward to clamp the protruding flash of the main material, and the air gun installed on the manipulator starts to blow air. The manipulator clamps the product and places it in a collection box. This is a production process.

[0021] The present invention adopts a combination of cold runner injection and molding. The upper mold cavity area and the lower mold cavity area are both distributed in a circle. Two adjacent lower cavities are connected together by a connecting groove. The upper glue injection port 3 and the lower glue injection port 5 are located at the center of the circle. During injection, the rubber material diverges from the center of the circle to the circumference, which is more suitable for flow. The cold runner system is used to inject the rubber material instead of manual feeding. The injection amount is accurate and easy to control, and the preforming process is reduced, the waste rubber generated in the traditional hot runner is saved, and the time spent on manual waste rubber removal is also saved. The runner of the cold runner system is in a semi-closed state. During injection, the rubber material has a fast flow rate and a high pressure in the runner, thereby shortening the vulcanization time, and the vulcanization time is reduced from the original 240 seconds to 180 seconds. The particle freezing edge removal structure design is adopted to save rubber material, and the particle freezing edge removal efficiency is high, and no manual trimming and sanding are required, thereby reducing labor costs. A robot is used for automatic demoulding and spraying of a demoulding agent. Except for timed feeding, the entire production process does not require manual intervention, thereby saving labor costs.

[0022] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An improved O-ring mold, It is characterized in that The invention comprises an upper mold plate (1) and a lower mold plate (2) arranged in an upper and lower position; the upper mold plate (1) is provided with a plurality of upper mold cavity areas at the bottom end, the upper mold cavity areas are in a circular structure and an upper glue injection port (3) is provided at the center of the upper mold cavity areas, and a plurality of upper mold cavities (4) are evenly provided in the upper mold cavity areas; the lower mold plate (2) is provided with a plurality of lower mold cavity areas at the top end, the lower mold cavity areas are in a circular structure and a lower glue injection port (5) is provided at the center of the lower mold cavity areas, and a plurality of lower mold cavities (6) are evenly provided in the lower mold cavity areas, and any two adjacent lower mold cavities (6) are connected via a connecting groove (7), and the lower mold cavities (6) are connected to each other via a connecting groove (7). The area is also provided with a plurality of glue injection grooves (8) arranged around the lower glue injection port (5) and connected to the lower glue injection port (5), and the glue injection grooves (8) are connected to the lower mold cavity (6) located on the inner side at one end away from the lower glue injection port (5); in the mold closing state, the plurality of lower mold cavity areas are respectively arranged in one-to-one correspondence with the plurality of upper mold cavity areas, the lower glue injection ports (5) of the lower mold cavity area are correspondingly connected to the upper glue injection ports (3) of the corresponding upper mold cavity area, and the plurality of lower mold cavities (6) of the lower mold cavity area are respectively matched with the plurality of upper mold cavities (4) of the corresponding upper mold cavity area to form a plurality of O-ring molding cavities; A plurality of upper mold cavity rings are arranged concentrically with the upper glue injection port (3) in the upper mold cavity area, and the upper mold cavity rings are formed by a plurality of upper mold cavities (4) evenly distributed in a circumference; A plurality of lower mold cavity rings are arranged concentrically with the lower injection port (5) in the lower mold cavity area. The lower mold cavity ring is formed by a plurality of lower mold cavities (6) evenly distributed on a circumference. Any two adjacent lower mold cavities (6) of the same lower mold cavity ring are connected via a connecting groove (7), and the lower mold cavity (6) of the lower mold cavity ring located on the inner side is connected to the lower mold cavity (6) of the lower mold cavity ring located on the outer side thereof via a connecting groove (7). The top of the lower mold plate (2) is also provided with an installation groove arranged around the plurality of lower mold cavity areas, and a rubber sealing ring (9) is installed in the installation groove; Also included is a cold runner assembly, which includes a runner plate assembly and a plurality of sub-gate assemblies (10) installed inside the runner plate assembly and respectively used to inject glue into the plurality of upper glue injection ports (3); The runner plate assembly comprises a runner plate (11), a heat insulation plate (12), and a heating plate (13) which are arranged in sequence from top to bottom. The heating plate (13) is assembled with the upper mold plate (1). A glue injection channel (14) for conveying glue to a plurality of gate assemblies (10) is provided inside the runner plate (11). An upper cooling circulation loop (15) for a cooling medium to enter and flow is provided inside the runner plate (11) and above the glue injection channel (14). A lower cooling circulation loop (16) for a cooling medium to enter and flow is provided inside the runner plate (11) and below the glue injection channel (14).

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