Arc core-pulling structure for pulling mahjong tile by oil cylinder gear

Abstract

The utility model relates to the field of mold demolding, and discloses an arc core-pulling structure for pulling a tile by an oil cylinder gear, which comprises a guide seat and a lower mold, an annular block is detachably mounted at the top end of the outer wall of the lower mold through a bolt, the inner side wall of the annular block is in contact with a connecting seat, and the outer surface of the connecting seat is fixedly connected with an arc core. And guide blocks are fixedly connected to the four corners of the bottom end of the guide base, racks make contact with the side walls of the inner sides of the guide blocks, gears are engaged with the surfaces of the racks, and a driving mechanism is arranged on the surface of the guide base. According to the utility model, the oil cylinder drives the sliding seat and drives the rack to move, so that the gear rotates, the synchronous rotation of the connecting seat is realized, the arc core is pulled out from the arc of the product, the connecting block moves along with the fixed seat, the straight core is pulled out from the inside of the straight groove of the product, the whole demolding process is rapid and synchronous, and the demolding efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of mold demolding, and in particular to a core-pulling structure for pulling a card by a hydraulic cylinder gear. Background Technology

[0002] When injection molding, the mold needs to be demolded. Mold demolding is an important step in the plastic molding process to ensure that the molded plastic parts can be easily separated from the mold.

[0003] In the mold manufacturing industry, the core-pulling structure is a key component for demolding complex molds, playing a vital role in improving production efficiency and ensuring product quality.

[0004] Currently, the existing hydraulic cylinder gear-driven arc core-pulling structure has some shortcomings: some existing products still have undercuts in the normal transverse demolding direction of the inner wall during injection molding, and the demolding efficiency of the undercut position is low, making it impossible to demold quickly. Therefore, a hydraulic cylinder gear-driven arc core-pulling structure is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a cylinder gear-driven arc core-pulling structure, which aims to improve the problem in the prior art where the inner wall has an undercut in the normal transverse demolding direction, resulting in low efficiency and inability to quickly demold the undercut position.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a cylinder gear-driven arc core-pulling structure, comprising a guide seat and a lower mold, wherein an annular block is detachably mounted on the top of the outer wall of the lower mold by bolts, a connecting seat is contacted on the inner side wall of the annular block, an arc core is fixedly connected to the outer surface of the connecting seat, guide blocks are fixedly connected to the four corners of the bottom end of the guide seat, a rack is contacted on the inner side wall of the guide block, a gear is meshed on the surface of the rack, two sets of grooves are opened at the top of the lower mold, a connecting block is contacted on the inner wall of the groove at the top of the lower mold, a straight core is fixedly connected to the surface of the connecting block, and a driving mechanism is provided on the surface of the guide seat.

[0007] As a further description of the above technical solution:

[0008] The driving mechanism includes a hydraulic cylinder, and a sliding seat is fixedly connected to the telescopic end of the hydraulic cylinder. A fixed seat is fixedly connected to the surface of the sliding seat.

[0009] As a further description of the above technical solution:

[0010] The surface of the gear has a groove, and the bottom end of the outer wall of the connecting seat is fixedly connected to the inner wall of the gear groove.

[0011] As a further description of the above technical solution:

[0012] The surface of the lower mold is provided with an annular groove, and the outer wall of the connecting seat is in contact with the inner wall of the annular groove.

[0013] As a further description of the above technical solution:

[0014] The gear is rotatably connected to the bottom end of the inner wall of the lower mold, and the rack passes through and is slidably connected to the inner wall at the bottom end of the lower mold.

[0015] As a further description of the above technical solution:

[0016] The hydraulic cylinder is fixedly connected to the outer sidewall of the guide seat, and the sliding seat is slidably connected to the inner sidewall of the guide seat.

[0017] As a further description of the above technical solution:

[0018] The surface of the sliding seat is provided with a guide groove, and the end of the rack contacts the inner wall of the guide groove of the sliding seat.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the connecting block is fixedly connected to the outer wall of the fixed base.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the sliding seat is driven by the hydraulic cylinder, which drives the rack to move and the gear to rotate, thus realizing the synchronous rotation of the connecting seat. This allows the arc core to be pulled out from the arc of the product. At the same time, the connecting block moves with the fixed seat, allowing the straight core to be pulled out from the straight groove of the product. The whole demolding process is fast and synchronous, which greatly improves the demolding efficiency.

[0023] 2. In this utility model, the annular block guides the rotational position of the connecting seat, and the guide block guides the movement position of the rack, ensuring the accurate position and stable movement of each component during operation, reducing demolding problems caused by component movement deviations, and improving demolding accuracy and product quality. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the arc-shaped core-pulling structure for pulling cards by a hydraulic cylinder gear proposed in this utility model;

[0025] Figure 2 This is a three-dimensional structural diagram of a sliding seat with a cylinder gear-driven arc-shaped core-pulling structure proposed in this utility model;

[0026] Figure 3This is a top view of the lower mold structure of the arc-shaped core-pulling structure of the card pulled by the oil cylinder gear proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of a gear structure for a hydraulic cylinder gear-driven arc-shaped core-pulling structure proposed in this utility model.

[0028] Figure 5 This is a schematic diagram of a straight core of a circular arc core-pulling structure using a hydraulic cylinder gear, as proposed in this utility model.

[0029] Legend:

[0030] 1. Guide seat; 2. Hydraulic cylinder; 3. Sliding seat; 4. Fixed seat; 5. Rack; 6. Lower mold; 7. Connecting block; 8. Annular block; 9. Connecting seat; 10. Arc core; 11. Guide block; 12. Gear; 13. Straight core. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a hydraulic cylinder gear-driven arc core-pulling structure, including a guide seat 1 and a lower mold 6. An annular block 8 is detachably installed on the top of the outer wall of the lower mold 6 by bolts. The function of the annular block 8 is to guide the rotational position of the connecting seat 9, so that when the connecting seat 9 rotates with the gear 12, its outer arc surface is always in contact with the inner side wall of the annular block 8. The inner side wall of the annular block 8 contacts the connecting seat 9. An annular groove is opened on the surface of the lower mold 6. The outer wall of the connecting seat 9 contacts the inner wall of the annular groove. The connecting seat 9 passes through the annular groove of the lower mold 6, so that the connecting seat 9 can be fixed to the surface of the gear 12 with bolts.

[0033] Reference Figure 3 and Figure 4A circular arc core 10 is fixedly connected to the outer surface of the connecting seat 9. When the connecting seat 9 is rotated by the gear 12, the circular arc core 10 fixed on its surface will rotate synchronously with it, so that it can be pulled out from the arc of the product and thus detached. Guide blocks 11 are fixedly connected to the four corners of the bottom end of the guide seat 1. The inner side wall of the guide block 11 contacts the rack 5. By setting the guide block 11, the movement position of the rack 5 can be guided. The rack 5 passes through and slides on the inner wall of the bottom end of the lower mold 6. The surface of the rack 5 meshes with the gear 12. The tooth pitch between the rack 5 and the gear 12 matches. When the sliding seat 3 is driven by the oil cylinder 2, it will drive the rack 5 to move synchronously, so that the rack 5 can mesh. Gear 12 rotates around its rotation center point. Gear 12 is rotatably connected to the bottom end of the inner wall of the lower mold 6. The surface of gear 12 has a groove. The bottom end of the outer wall of the connecting seat 9 is fixedly connected to the inner wall of the groove of gear 12. The top end of the lower mold 6 has two sets of grooves. The inner wall of the groove at the top end of the lower mold 6 contacts the connecting block 7. The surface of the connecting block 7 is fixedly connected to the straight core 13. When the connecting block 7 moves with the fixed seat 4, the straight core 13 will be pulled out from the straight groove of the product. At the same time, the rack 5 will mesh with gear 12 and rotate, so that gear 12 drives the connecting seat 9 to rotate synchronously, so that the arc core 10 is pulled out from the arc of the product, thus enabling rapid demolding. The surface of the guide seat 1 is provided with a drive mechanism.

[0034] Reference Figure 2 and Figure 5 The driving mechanism includes a hydraulic cylinder 2, which is fixedly connected to the outer side wall of the guide seat 1. By providing two sets of guide seats 1, the movement position of the sliding seat 3 can be guided. The sliding seat 3 is slidably connected to the inner side wall of the guide seat 1. The extension end of the hydraulic cylinder 2 is fixedly connected to the sliding seat 3. A guide groove is provided on the surface of the sliding seat 3. The end of the rack 5 contacts the inner wall of the guide groove of the sliding seat 3. The contact between the two can limit the installation position of the rack 5, so that when the sliding seat 3 moves with the extension end of the hydraulic cylinder 2, it will also drive the rack 5 to move synchronously with it. A fixed seat 4 is fixedly connected to the surface of the sliding seat 3.

[0035] Working principle: An annular block 8 is bolted to the top of the outer wall of the lower mold 6. The annular block 8 guides the rotation position of the connecting seat 9. The outer arc surface of the connecting seat 9 contacts the inner side wall of the annular block 8, and the outer wall of the connecting seat 9 contacts the inner wall of the annular groove on the surface of the lower mold 6. The connecting seat 9 can be fixed to the surface of the gear 12 by bolts. The guide block 11 is fixed at the four corners of the bottom end of the guide seat 1. The inner side wall of the guide block 11 contacts the rack 5 and guides the movement position of the rack 5. The rack 5 passes through and slides on the inner wall of the bottom end of the lower mold 6. These structures ensure the accurate position and stable movement of each component during operation.

[0036] The hydraulic cylinder 2 of the drive mechanism is fixed to the outer side wall of the guide seat 1. The telescopic end of the hydraulic cylinder 2 is connected to the sliding seat 3, which is slidably connected to the inner side wall of the guide seat 1. The surface of the sliding seat 3 has a guide groove, and the end of the rack 5 contacts the inner wall of the guide groove, so that when the sliding seat 3 moves under the drive of the hydraulic cylinder 2, it can drive the rack 5 to move synchronously. The rack 5 meshes with the gear 12, and the tooth spacing of the two matches. When the rack 5 moves, it will drive the gear 12 to rotate around its rotation center point. The surface of the gear 12 has a groove, and the bottom end of the connecting seat 9 is fixed in the groove. The wall is so that when the gear 12 rotates, it will drive the connecting seat 9 to rotate. The outer surface of the connecting seat 9 is fixed with the arc core 10. When the connecting seat 9 rotates, the arc core 10 will be pulled out from the arc of the product, realizing the demolding of the arc part. The surface of the connecting block 7 in the groove at the top of the lower mold 6 is fixed with the straight core 13. When the connecting block 7 moves with the fixed seat 4, the straight core 13 will be pulled out from the straight groove of the product. At the same time as the rack 5 drives the gear 12 to rotate, the connecting seat 9 rotates and the arc core 10 is pulled out, thus completing the rapid demolding process of the entire product.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A core-pulling structure of a gear-pulling plate circular arc of an oil cylinder, comprising a guide seat (1) and a lower mold (6), characterized in that: The top of the outer wall of the lower mold (6) is detachably installed with an annular block (8) through bolts, the inner side wall of the annular block (8) is contacted with a connecting seat (9), the outer surface of the connecting seat (9) is fixedly connected with a circular arc core (10), the bottom of the guide seat (1) is fixedly connected with a guide block (11) at four corners, the inner side wall of the guide block (11) is contacted with a rack (5), the surface of the rack (5) is engaged with a gear (12), the top of the lower mold (6) is provided with two groups of grooves, the inner wall of the top groove of the lower mold (6) is contacted with a connecting block (7), the surface of the connecting block (7) is fixedly connected with a straight core (13), the surface of the guide seat (1) is provided with a driving mechanism.

2. The oil cylinder gear pull round arc loosing core structure according to claim 1, characterized in that: The driving mechanism comprises an oil cylinder (2), the telescopic end of the oil cylinder (2) is fixedly connected with a sliding seat (3), the surface of the sliding seat (3) is fixedly connected with a fixed seat (4).

3. The oil cylinder gear pull round arc loosing core structure according to claim 1, characterized in that: The surface of the gear (12) is provided with a groove, and the bottom of the outer wall of the connecting seat (9) is fixedly connected with the inner wall of the gear (12) groove.

4. The oil cylinder gear pull round arc loosing core structure according to claim 1, characterized in that: The surface of the lower mold (6) is provided with an annular groove, and the outer wall of the connecting seat (9) is contacted with the inner wall of the annular groove.

5. The oil cylinder gear pull round arc loosing core structure according to claim 1, characterized in that: The gear (12) is rotatably connected to the bottom of the inner wall of the lower mold (6), and the rack (5) is penetratingly and slidably connected to the inner wall of the bottom of the lower mold (6).

6. The oil cylinder gear pull round arc loosing core structure according to claim 2, characterized in that: The oil cylinder (2) is fixedly connected to the outer side wall of the guide seat (1), and the sliding seat (3) is slidably connected to the inner side wall of the guide seat (1).

7. The oil cylinder gear pull round arc loosing core structure according to claim 2, characterized in that: The surface of the sliding seat (3) is provided with a guide groove, and the end of the rack (5) is contacted with the inner wall of the guide groove of the sliding seat (3).

8. The oil cylinder gear pull round arc loosing core structure according to claim 2, characterized in that: The outer wall of the connecting block (7) is fixedly connected with the outer wall of the fixed seat (4).

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