Veneer cold runner splicing block structure of rubber injection molding machine

Abstract

The utility model discloses a veneer cold runner splicing block structure of a rubber injection molding machine, which comprises a cold runner plate and a hot plate arranged at the bottom of the cold runner plate, a glue inlet nozzle is arranged on the cold runner plate, a plurality of glue outlet nozzles are distributed on the bottom surface of the hot plate, and a glue material runner communicated with the glue inlet nozzle and the glue outlet nozzles is arranged in the cold runner plate. And a shunting module is arranged in the glue runner, so that the glue inlet nozzle is communicated with the glue outlet nozzle. The veneer cold runner splicing block structure of the rubber injection molding machine has the advantages of being good in working performance, low in machining difficulty, reliable in later maintenance and high in universality.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber injection molding machines, in particular to a single-plate cold runner block structure of a rubber injection molding machine. Background Art

[0002] The existing cold runner plate structure of the rubber injection molding machine is mainly composed of an upper and lower runner plate locking structure. The upper plate is designed and processed in conjunction with the lower plate, and the runner is mainly processed between the upper and lower runner plates. The expansion force generated by the injected rubber material in the process of passing through the runner needs to be locked by screws that can provide sufficient locking force. A glue escape channel needs to be designed between the upper and lower runner plates to prevent glue leakage due to insufficient pre-tightening force provided by the screws during use or processing defects that can cause glue escape. If the screws are loosened during later use, the locking force may be unbalanced, resulting in direct glue spreading and leakage, which increases the difficulty of maintenance. The main disadvantages of the existing runner plate structure are: the use of two runner plates for connection and locking, the upper and lower runner plates need to be adapted for processing, the production and processing are difficult, the screw locking is unstable, the mold installation height is increased, and the later maintenance is difficult. Utility Model Content

[0003] The purpose of the utility model is to provide a single-plate cold runner block structure for a rubber injection molding machine, which has the characteristics of good working performance, low processing difficulty, reliable later maintenance and strong versatility.

[0004] To achieve the above-mentioned purpose, the technical solution provided by the utility model is: a single-plate cold runner block structure of a rubber injection molding machine, comprising a cold runner plate and a hot plate arranged at the bottom of the cold runner plate, a glue feed nozzle is provided on the cold runner plate, and a plurality of glue discharge nozzles are distributed on the bottom surface of the hot plate. A glue flow channel connecting the glue feed nozzle and the glue discharge nozzle is provided inside the cold runner plate, and a diversion module is provided in the glue flow channel to realize the connection between the glue feed nozzle and the glue discharge nozzle.

[0005] The utility model adopts the above technical solution. The rubber material enters the flow channel from the rubber inlet nozzle, and is evenly diverted to the rubber outlet nozzle at the bottom through the diversion module, thereby achieving uniform diversion of the rubber material. This solution has the advantages of easy assembly and the use of a single cold runner plate for diversion, which reduces the difficulty of processing. The cold runner plate can also cool the rubber material.

[0006] The aforementioned single-plate cold runner block structure for a rubber injection molding machine consists of a flow distribution module comprising a central flow distribution body, and two separate single-channel and dual-channel flow distribution bodies located on either side of the central flow distribution body. The central flow distribution body is located in the middle of the cold runner plate, while the two separate single-channel and dual-channel flow distribution bodies are located on either side of the central flow distribution body, directing the rubber material and distributing it to the dispensing nozzle at the bottom.

[0007] The aforementioned single-plate cold runner block structure for a rubber injection molding machine features a central manifold comprising a first and second runner blocks. The first and second runner blocks are internally provided with first and second runner channels for diverting the flow of rubber material. The first and second runner channels are connected to the single-channel manifold and the dual-channel manifold, respectively. The spliced structure of the first and second runner blocks facilitates machining of the runners within the central manifold.

[0008] The single-plate cold runner block structure for the rubber injection molding machine described above features a single-channel manifold comprising a first and second assembly blocks. A fifth runner is provided within each of the first and second assembly blocks, with the ends of the fifth runner connected to the central manifold and the dispensing nozzle, respectively. The split structure of the first and second assembly blocks facilitates the processing of the fifth and sixth runners within the single-channel manifold.

[0009] The aforementioned single-plate cold runner block structure for a rubber injection molding machine features a dual-channel manifold comprising a first and second joining block. The third and fourth runners are positioned within these blocks, intersecting on their inner sides and connecting to the central manifold through an angled channel. The other ends of the third and fourth runners are connected to respective dispensing nozzles. The separate construction of the first and second blocks facilitates the fabrication of the third and fourth runners, which can then be assembled together, facilitating fabrication.

[0010] In the aforementioned single-plate cold runner block structure for a rubber injection molding machine, the single-channel manifold and the dual-channel manifold are assembled within the cold runner plate via glands and set screws, respectively. Assembly slots are provided in the cold runner plate, where the single-channel and dual-channel manifolds are placed. The glands are then tightened with set screws to complete assembly. Disassembly requires only the glands, facilitating assembly and disassembly of the block structure and subsequent maintenance.

[0011] In the aforementioned single-plate cold runner block structure for a rubber injection molding machine, the single-channel and dual-channel manifolds are assembled into the cold runner plate using locating pins. These pins ensure that the flow channels of the single-channel and dual-channel manifolds are aligned with the flow channel of the central manifold after assembly, allowing for flow of the rubber material.

[0012] The above-mentioned single-plate cold runner block structure of the rubber injection molding machine has a gate between the central manifold and the glue feeding nozzle. After the central manifold is loaded, the central manifold can be pressed through the gate, and the glue feeding nozzle is set at the gate for inputting rubber material.

[0013] The single-plate cold runner block structure of the rubber injection molding machine described above has a cold runner nozzle body distributed on the hot plate, and a plurality of glue discharge nozzles are installed on the cold runner nozzle body. The cold runner nozzle body is used to cool the rubber vulcanized by the hot plate to a certain extent before the rubber finally flows out from the glue discharge nozzle.

[0014] In the above-mentioned single-plate cold runner block structure of the rubber injection molding machine, a heat insulation plate is provided between the hot plate and the cold runner plate. The heat insulation plate is used to isolate the temperature transfer between the hot plate and the cold runner plate.

[0015] The beneficial effects achieved by the present invention are as follows: the runner is arranged in a single cold runner plate, and the rubber is cooled in the cold runner plate and then diverted to the glue discharge nozzle through the diversion of the diversion module. The single cold runner plate arrangement solves the problems of the traditional double-plate structure, such as the high processing difficulty, easy loosening of screws, and difficulty in mold installation. It has good working performance, a compact structure, low processing difficulty, stable rubber feeding, and convenient and reliable later maintenance. It has the advantages of safe and continuous operation, strong adaptability and versatility. The runner corners of the central diverter, single-channel diverter, and dual-channel diverter adopt smooth turning transitions, making it easier for the rubber to pass through the runner and flow out of the glue discharge nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a single-plate cold runner block structure of a rubber injection molding machine according to an embodiment of the present utility model;

[0017] Figure 2 yes Figure 1 A schematic cross-sectional view of a single-plate cold runner block structure CC of a rubber injection molding machine according to an embodiment of the present invention;

[0018] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure of position B in the middle;

[0019] Figure 4 yes Figure 2 Schematic diagram of the enlarged structure of the D position in the middle;

[0020] Figure 5 yes Figure 2 Schematic diagram of the enlarged structure of the E position in the middle;

[0021] Figure 6 This is a schematic diagram of the external and internal structures of the central manifold in an embodiment of the present utility model;

[0022] Figure 7 Schematic diagram of the external and internal structures of a single-channel manifold according to an embodiment of the present invention;

[0023] Figure 8 This is a schematic diagram of the external and internal structures of a dual-channel manifold according to an embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the structure of the utility model when it is implemented on a rubber injection molding machine;

[0025] Figure 10It is a schematic diagram of the cross-sectional structure of a rubber injection molding machine.

[0026] Explanation of the accompanying drawings: cold runner plate 1, glue runner 10, glue inlet nozzle 11, pressure cover 12, set screw 13, positioning pin 14, gate 15, locking screw 16, key 17, runner rod 18, hot plate 2, glue outlet nozzle 21, cold runner nozzle body 22, diverter module 3, central diverter body 31, first runner block 311, second runner block 312, first runner 313, second runner 314, glue channel 315, single-channel diverter body 32, first combination block 321, second combination block 322, fifth runner 323, dual-channel diverter body 33, first splicing block 331, second splicing block 332, third runner 333, fourth runner 334, corner channel 335, heat insulation board 4, injection assembly 5, plasticizing assembly 6, upper template 7, movable template 8, lifting cylinder 9. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] Reference Figures 1 to 8 As shown, a single-plate cold runner block structure of a rubber injection molding machine includes a cold runner plate 1 and a hot plate 2 provided at the bottom of the cold runner plate 1. A glue inlet nozzle 11 is provided on the cold runner plate 1, and a plurality of glue outlet nozzles 21 are distributed on the bottom surface of the hot plate 2. A rubber flow channel 10 is provided inside the cold runner plate 1 to connect the glue inlet nozzle 11 and the glue outlet nozzle 21. A diverter module 3 is provided in the rubber flow channel 10 to achieve communication between the glue inlet nozzle 11 and the glue outlet nozzle 21. The rubber flow channel 10 runs through the cold runner plate 1. The diverter module 3 provided in the rubber flow channel 10 is used to divert the rubber injected from the glue inlet nozzle 11 to the glue outlet nozzle 21 at the bottom of the hot plate 2. The diverter module 3 can be provided in an integral structure or a split structure. When it is an integral molding structure, a slot matching the structure and shape of the diverter module 3 is provided on the cold runner plate 1, and the diverter module 3 is placed in the slot.

[0029] The flow diversion module 3 can also be manufactured using a split structure, comprising a central diversion body 31, and single-channel diversion bodies 32 and dual-channel diversion bodies 33 located on either side of the central diversion body 31. The single-channel diversion body 32 and the dual-channel diversion body 33 are respectively connected to the central diversion body 31 and to the glue discharge nozzle 21. The glue is diverted from the central diversion body 31 to the single-channel diversion body 32 and the dual-channel diversion body 33, and ultimately flows out through the glue discharge nozzle 21.

[0030] like Figure 6As shown, the central manifold 31 includes a first flow channel block 311 and a second flow channel block 312. The inner sides of the first and second flow channel blocks 311 and 312 are provided with first and second flow channels 313 and 314 for diverting the flow of the rubber material. The first and second flow channels 313 and 314 are respectively connected to the single-channel manifold 32 and the dual-channel manifold 33. The rubber material flows from the first flow channel 313 into the single-channel manifold 32 and from the second flow channel 314 into the dual-channel manifold 33. The split structure of the first and second flow channel blocks 311 and 312 allows for the processing of the internal flow channels of the central manifold 31.

[0031] like Figure 7 As shown, the single-channel manifold 32 includes a first assembly block 321 and a second assembly block 322. A fifth flow channel 323 is provided inside the first and second assembly blocks 321 and 322. The ends of the fifth flow channel 323 connect the central manifold 31 and the glue dispensing nozzle 21, respectively. The single-channel manifold 32 receives the glue flowing through the first flow channel 311 of the central manifold 31 through the fifth flow channel 323, and flows out from the bottom end of the fifth flow channel 323 to the glue dispensing nozzle 21. The first and second assembly blocks 321 and 322 can each be individually or jointly provided with the fifth flow channel 323 inside the assembly block to facilitate processing.

[0032] like Figure 8 As shown, the dual-channel manifold 33 includes a first assembly block 331 and a second assembly block 332. A third flow channel 333 and a fourth flow channel 334 are provided on the inner sides of the first assembly block 331 and the second assembly block 332. The third flow channel 333 and the fourth flow channel 334 intersect on the inner sides and connect to the central manifold 31 through an angle channel 335. The other ends of the third flow channel 333 and the fourth flow channel 334 are respectively connected to the glue discharge nozzle 21. The inner sides of the first assembly block 331 and the second assembly block 332 can be machined separately or together to form the third flow channel 333 and the fourth flow channel 334, thereby facilitating processing. The output ends of the third flow channel 333 and the fourth flow channel 334 feed the glue into the glue discharge nozzle 21. The top ends of the third flow channel 333 and the fourth flow channel 334 converge and connect to the second flow channel 312 of the central manifold 31 through the angle channel 333, receiving the glue flowing in from the second flow channel 312.

[0033] The first flow channel 313 , the second flow channel 314 , the third flow channel 333 , the fourth flow channel 334 and the fifth flow channel 323 are provided with rounded corners to achieve a smooth transition when the rubber flows through, thereby reducing the friction force on the rubber when passing through.

[0034] The central manifold 31, the single-channel manifold 32 and the dual-channel manifold 33 are assembled in two separate blocks, which can be connected and positioned by a key 17, such as Figure 6 shown.

[0035] Combine Figures 1 to 5 As shown, a gate 15 is provided between the central manifold 31 and the glue feed nozzle 11. The single-channel manifold 32 and the dual-channel manifold 33 are assembled within the cold runner plate 1 via a gland 12 and set screws 13, respectively. The single-channel manifold 32 and the dual-channel manifold 33 are positioned and assembled within the cold runner plate 1 via locating pins 14. The locating pins 14 ensure that, after the single-channel manifold 32 and the dual-channel manifold 33 are assembled, the third flow channel 323 of the single-channel manifold 32 is aligned with the first flow channel 313 of the central manifold 31, and the corner channel 335 of the dual-channel manifold 33 is aligned with the second flow channel 314 of the central manifold 31.

[0036] After the single-channel manifold 32 and the dual-channel manifold 33 are assembled on the cold runner plate 1, locking screws 16 are provided on the side of the cold runner plate 1 to lock and fix the single-channel manifold 32 and the dual-channel manifold 33 to prevent them from rotating, thereby having the function of preventing fooling and anti-rotation.

[0037] Furthermore, a cold runner nozzle body 22 is distributed on the hot plate 2, and a plurality of glue discharge nozzles 21 are arranged on the cold runner nozzle body 22. A heat insulation plate 4 is provided between the hot plate 2 and the cold runner plate 1.

[0038] Reference Figure 9 and Figure 10 As shown, the utility model discloses a schematic diagram of a single-plate cold runner block structure 1a of a rubber injection molding machine being arranged on a rubber injection molding machine. During operation, after the rubber material is plasticized by the plasticizing component 6, the injection component 5 injects the rubber material into the cold runner plate 1 from the glue inlet nozzle 11. The single-plate cold runner block structure 1a of the rubber injection molding machine is arranged on the upper mold plate 7. When the mold is closed, the lifting cylinder 9 at the bottom of the molding machine pushes the movable mold plate 8 upward toward the upper mold plate 7 to close the mold. After the mold is closed, the rubber material is diverted and cooled by the cold runner plate 1, then heated and vulcanized by the hot plate 2, and finally injected from the glue outlet nozzle 21 into the mold cavity formed after the mold is closed.

[0039] During the specific implementation of the present invention, the nozzle of the injection assembly 5 injects the rubber into the gate 15, and then directly injects it into the central diverter body 31 of the diverter module 3 through the glue inlet nozzle 11, where the rubber is divided into two. One portion of the rubber enters the single-channel diverter body 32 from the first flow channel 313, smoothly transitions through the fifth flow channel 323 inside the single-channel diverter body 32, and is then injected into the cold runner nozzle body 22, where it finally flows out from the glue outlet nozzle 21. The other portion of the rubber enters the dual-channel diverter body 33 from the second flow channel 314, first passes through the curved channel 335, and then smoothly transitions through its corner before being divided into two. The two separated rubber streams respectively pass through the third flow channel 333 and the fourth flow channel 334, smoothly transitioning through the corner inside the runner rod 18, and are finally injected into the cold runner nozzle body 22 connected to the runner rod 18. The glue passage 315 on the central flow diverter 31 diverts the rubber material through it and then diverts it. The glue passage 315 changes diameter, gradually increasing in diameter toward the first flow channel 313 and the second flow channel 314, thereby diverting the rubber material. The rubber material flowing from the first channel 313 into the single-channel flow diverter 32 is then injected into the leftmost cold runner nozzle body 22. The three rubber material flows follow equal paths and proceed simultaneously, achieving a smooth transition. This significantly reduces resistance to the rubber material that would otherwise be created by a less smooth transition, thereby reducing energy consumption.

[0040] The rubber material is heated and vulcanized by the hot plate 2 when passing through the cold runner nozzle body 22 , and finally flows out from the rubber discharge nozzle 21 and is injected into the mold cavity formed by the movable mold plate 8 and the upper mold plate 7 being combined.

[0041] In summary, the present invention has been manufactured into actual samples and tested multiple times in accordance with the description and illustrations. The results of the test results show that the present invention can achieve its intended purpose and its practical value is beyond doubt. The above embodiments are only used to illustrate the present invention and are not intended to limit the present invention in any form. Any person with ordinary knowledge in the relevant technical field can, without departing from the scope of the technical features of the present invention, make partial changes or modifications to the technical content disclosed in the present invention and make equivalent embodiments without departing from the technical features of the present invention. These modifications are still within the scope of the technical features of the present invention.

Claims

1. A single-plate cold runner block structure for a rubber injection molding machine, characterized by: The invention comprises a cold runner plate (1) and a hot plate (2) arranged at the bottom of the cold runner plate (1); a glue feed nozzle (11) is provided on the cold runner plate (1); a plurality of glue discharge nozzles (21) are distributed on the bottom surface of the hot plate (2); a glue flow channel (10) is provided inside the cold runner plate (1) and is connected to the glue feed nozzle (11) and the glue discharge nozzle (21); a diversion module (3) is provided in the glue flow channel (10) to achieve communication between the glue feed nozzle (11) and the glue discharge nozzle (21).

2. The single-plate cold runner block structure for a rubber injection molding machine according to claim 1, characterized in that: The flow dividing module (3) comprises a central flow dividing body (31), a single-channel flow dividing body (32) and a double-channel flow dividing body (33) located on both sides of the central flow dividing body (31).

3. The single-plate cold runner block structure for a rubber injection molding machine according to claim 2, characterized in that: The central flow divider (31) comprises a first flow channel block (311) and a second flow channel block (312). The first flow channel block (311) and the second flow channel block (312) are provided with a first flow channel (313) and a second flow channel (314) for diverting the rubber material on their inner sides. The first flow channel (313) and the second flow channel (314) are connected to the single-channel flow divider (32) and the double-channel flow divider (33), respectively.

4. The single-plate cold runner block structure for a rubber injection molding machine according to claim 2, characterized in that: The single-channel flow divider (32) comprises a first assembly block (321) and a second assembly block (322), wherein a fifth flow channel (323) is provided inside the first assembly block (321) and the second assembly block (322), and the two ends of the fifth flow channel (323) are respectively connected to the central flow divider (31) and the glue discharge nozzle (21).

5. The single-plate cold runner block structure for a rubber injection molding machine according to claim 2, characterized in that: The dual-channel flow divider (33) comprises a first splicing block (331) and a second splicing block (332). A third flow channel (333) and a fourth flow channel (334) are provided on the inner sides of the first splicing block (331) and the second splicing block (332). The third flow channel (333) and the fourth flow channel (334) intersect on the inner sides and are connected to the central flow divider (31) through an angle channel (335). The other ends of the third flow channel (333) and the fourth flow channel (334) are respectively connected to the glue discharge nozzle (21).

6. The single-plate cold runner block structure for a rubber injection molding machine according to claim 2, characterized in that: The single-channel flow divider (32) and the double-channel flow divider (33) are respectively assembled inside the cold runner plate (1) via a pressure cover (12) and a set screw (13).

7. The single-plate cold runner block structure for a rubber injection molding machine according to claim 6, characterized in that: The single-channel flow divider (32) and the dual-channel flow divider (33) are positioned and assembled in the cold runner plate (1) via positioning pins (14).

8. The single-plate cold runner block structure for a rubber injection molding machine according to claim 2, characterized in that: A gate (15) is provided between the central flow divider (31) and the glue feeding nozzle (11).

9. The single-plate cold runner block structure for a rubber injection molding machine according to claim 1, characterized in that: A cold runner nozzle body (22) is distributed on the hot plate (2), and a plurality of glue discharge nozzles (21) are arranged on the cold runner nozzle body (22).

10. The single-plate cold runner block structure for a rubber injection molding machine according to claim 1, characterized in that: A heat insulation plate (4) is provided between the hot plate (2) and the cold runner plate (1).

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