Quick mold changing device for injection mold

The quick mold change mechanism for injection molding machines addresses the inefficiency of traditional mold change processes by using guided fit and locking mechanisms, enabling rapid and efficient mold installation and removal.

CN223099807UActive Publication Date: 2025-07-15TAICANG JIUBEN MACHINERY & EMJ TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202422389730.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-30
Publication Date
2025-07-15
Estimated Expiration
2034-09-30

AI Technical Summary

Technical Problem

The replacement of existing injection molds is cumbersome, time-consuming and labor-intensive, and it is difficult to achieve rapid mold replacement.

Method used

The oblique force locking mechanism of the coupling of the guide column and the guide sleeve, the sliding insert plate and the inclined notch of the guide column, and the combined locking structure of the limit insert plate and the limit block are adopted to achieve rapid installation and disassembly of the mold.

Benefits of technology

The mold installation and disassembly process is simplified, rapid mold change is achieved, and operating efficiency is improved.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a quick mold changing device for an injection mold, which comprises a molding press and a mold, the mold is detachably mounted on the molding press, and the utility model aims to provide a tool for automatically inserting a soft sealing strip into a mold cavity, the mold is firstly transported to the position right above a lower mounting plate of the molding press and is positioned through the matching of a guide post and a guide sleeve; then the sliding insertion plate is inserted, so that the inclined top surface of the insertion plate is matched with the inclined plane notch in the guide post to apply an inclined downward force to the inclined top surface, and the lower cover plate of the mold is fixed on the lower mold mounting plate of the molding press; then the upper mounting plate of the molding press is lowered to the upper cover plate of the mold, after the positioning holes and the positioning rings are used for positioning, the limiting insertion plates are inserted into the gaps between the limiting blocks and the upper cover plate of the mold, and finally the bolts are inserted, only the bolts, the limiting insertion plates and the sliding insertion plates need to be pulled out during disassembly, the structure is simple, operation is convenient, and the purpose of rapidly replacing the mold is achieved.
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Description

Technical Field

[0001] The utility model belongs to the technical field of injection molding equipment, and particularly relates to a rapid mold changing device for an injection mold. Background Art

[0002] With the rapid development of China's automobile industry, the scale of automobile production is getting larger and larger. As a part of automobiles, the demand for sealing strips is also increasing. And due to the different shapes of sealing strips corresponding to different vehicle models, when it is necessary to produce sealing strips for different vehicle models, it is necessary to switch the corresponding production molds. However, since the previous molds were fixed on the molding press by screws, each time the mold was switched, the screws had to be loosened, the mold was switched, and then the screws were tightened, resulting in cumbersome mold changing operations, time-consuming and laborious. Content of the Utility Model

[0003] Purpose of the utility model: In order to overcome the above deficiencies, the purpose of the utility model is to provide a rapid mold changing device for an injection mold. First, the mold is transported to directly above the lower mounting plate of the molding press and positioned through the cooperation of guide posts and guide sleeves. Then, the sliding plug plate is inserted so that the inclined top surface of the plug plate cooperates with the inclined notch on the guide post to apply a force obliquely downward, thereby fixing the lower cover plate of the mold on the lower mold mounting plate of the molding press. Subsequently, the upper mounting plate of the molding press is lowered to the upper cover plate of the mold. After positioning through the positioning hole and positioning ring, the limiting plug plate is inserted into the gap between the limiting block and the upper cover plate of the mold, and finally the plug pin is inserted. When disassembling, only the plug pin, the limiting plug plate, and the sliding plug plate need to be pulled out. Its structure is simple and the operation is convenient, achieving the purpose of rapid mold changing.

[0004] Technical solution: In order to achieve the above purpose, a rapid mold changing device for an injection mold includes a molding press and a mold, and the mold is detachably installed on the molding press;

[0005] The molding press includes a lower mounting plate of the molding press, an upper mounting plate of the molding press, a lower mold rapid locking device, and an upper mold rapid locking device. The lower mold rapid locking device is arranged on the lower mounting plate of the molding press, and the upper mold rapid locking device is arranged on the upper mounting plate of the molding press;

[0006] The mold includes an upper cover plate of the mold and a lower cover plate of the mold. The upper cover plate of the mold is connected to the upper mounting plate of the molding press through the upper mold rapid locking device, and the lower cover plate of the mold is connected to the lower mounting plate of the molding press through the lower mold rapid locking device.

[0007] Preferably, the lower mold rapid locking device includes a set of guide sleeve mounting plates, guide sleeves, push-pull toggle clamps, toggle clamp mounting blocks, and sliding plug plates. The guide sleeve mounting plates are arranged on both sides of the lower mounting plate of the molding press, and at least two guide sleeves are installed on the guide sleeve mounting plates;

[0008] The sliding plug board is inserted into the side of the lower mounting plate of the molding press and can extend under the guide sleeve. The sliding plug board is connected to a push-pull toggle clamp, and the push-pull toggle clamp is mounted on the lower mounting plate of the molding press through a toggle clamp mounting block.

[0009] Furthermore, guide posts are provided under the lower cover plate of the mold, and the guide posts can be inserted into the guide sleeves.

[0010] Furthermore, an inclined top surface of the plug board is provided at the end of the sliding plug board, and an inclined surface notch of the guide post is opened in the middle of the guide post. The inclined top surface of the plug board can fit with the inclined surface notch of the guide post. When a worker operates the push-pull toggle clamp to push the sliding plug board in, the inclined top surface of the plug board cooperates with the inclined surface notch of the guide post to convert the horizontal force into an obliquely downward force applied to the guide post, thereby firmly locking the lower cover plate of the mold on the lower mounting plate of the molding press.

[0011] In a further optimized solution, the upper mold quick locking device includes a set of limit blocks, pins, and limit plug boards. The limit blocks are provided on both sides of the upper mounting plate of the molding press. A pin hole is provided on the side surface of the limit block. The pin is inserted into the pin hole, and the limit plug board is inserted into the gap between the limit block and the upper cover plate of the mold.

[0012] Preferably, a rectangular groove is opened along the length direction of the limit block. Locking ears are provided on both sides of the upper cover plate of the mold. The cross section of the limit plug board is step-shaped. The limit plug board is inserted into the rectangular groove and abuts against the locking ears. A pin hole is provided on the side surface of the limit plug board. The pin is inserted into the pin holes of the limit block and the limit plug board. The limit plug board is inserted into the gap between the limit block and the upper cover plate of the mold to complete the left-right and up-down limits between the limit block and the upper cover plate of the mold. The pin is inserted into the limit block and the limit plug strip to prevent the limit plug strip from moving back and forth.

[0013] Furthermore, a positioning hole is provided at the center of the upper mounting plate of the molding press, and a positioning ring is provided at the center of the upper cover plate of the mold. The positioning ring cooperates with the positioning hole. The upper mounting plate of the molding press and the upper cover plate of the mold are initially positioned through the cooperation of the positioning ring and the positioning hole.

[0014] Even further, the upper mounting plate of the molding press is installed on the molding press in a liftable manner through a slide rail, and the upper mounting plate of the molding press is connected to a lift driving cylinder.

[0015] From the above technical solutions, it can be seen that the present utility model has the following beneficial effects:

[0016] The purpose of the present utility model is to provide an automatic inserting tooling for a soft sealing strip into a mold cavity. First, the mold is transported to directly above the lower mounting plate of the molding press and positioned through the cooperation of guide columns and guide sleeves. Then, the sliding insertion plate is inserted so that the inclined top surface of the insertion plate cooperates with the inclined notch on the guide column to apply a force obliquely downward, thereby fixing the lower cover plate of the mold on the lower mold mounting plate of the molding press. Subsequently, the upper mounting plate of the molding press is lowered to the upper cover plate of the mold. After positioning through the positioning holes and the positioning rings, the limiting insertion plate is inserted into the gap between the limiting block and the upper cover plate of the mold, and finally the insertion pin is inserted. When disassembling, only the insertion pin, the limiting insertion plate, and the sliding insertion plate need to be pulled out. Its structure is simple and the operation is convenient, achieving the purpose of rapid mold change. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a rapid mold change device for an injection mold according to the present utility model;

[0018] Figure 2 It is a state diagram of the mold placed in the molding press;

[0019] Figure 3 It is a schematic structural diagram of the molding press according to the present utility model;

[0020] Figure 4 It is a top view of the lower mounting plate of the molding press according to the present utility model;

[0021] Figure 5 It is a side view of the lower mounting plate of the molding press according to the present utility model;

[0022] Figure 6 It is a cross-sectional view of the lower mounting plate of the molding press according to the present utility model;

[0023] Figure 7 It is a cross-sectional view of the locking state between the lower mounting plate of the molding press and the lower cover plate of the mold;

[0024] Figure 8 It is a schematic structural diagram of the upper mounting plate of the molding press;

[0025] Figure 9 It is a cross-sectional view of the insertion pin part in the locking state between the upper mounting plate of the molding press and the upper cover plate of the mold;

[0026] Figure 10 It is a cross-sectional view of the positioning hole part in the locking state between the upper mounting plate of the molding press and the upper cover plate of the mold.

[0027] In the figure: 1 - Mold press, 11 - Lower mounting plate of the mold press, 12 - Upper mounting plate of the mold press, 121 - Positioning hole, 13 - Lower die quick locking device, 131 - Guide bushing mounting plate, 132 - Guide bushing, 133 - Push - pull toggle clamp, 134 - Toggle clamp mounting block, 135 - Sliding plug plate, 1351 - Inclined top surface of the plug plate, 14 - Upper die quick locking device, 141 - Limit block, 142 - Plug pin, 143 - Limit plug plate, 2 - Mold, 21 - Lower cover plate of the mold, 211 - Guide post, 2111 - Inclined notch on the guide post surface, 22 - Upper cover plate of the mold, 221 - Locking ear, 222 - Positioning ring. Detailed implementation mode

[0028] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0029] As Figures 1-3 shown: A rapid mold - changing device for an injection mold includes a mold press 1 and a mold 2, and the mold 2 is detachably installed on the mold press 1;

[0030] The mold press 1 includes a lower mounting plate 11 of the mold press, an upper mounting plate 12 of the mold press, a lower die quick locking device 13 and an upper die quick locking device 14. The lower die quick locking device 13 is arranged on the lower mounting plate 11 of the mold press, and the upper die quick locking device 14 is arranged on the upper mounting plate 12 of the mold press;

[0031] The mold 2 includes an upper cover plate 22 of the mold and a lower cover plate 21 of the mold. The upper cover plate 22 of the mold is connected to the upper mounting plate 12 of the mold press through the upper die quick locking device 14, and the lower cover plate 21 of the mold is connected to the lower mounting plate 11 of the mold press through the lower die quick locking device 13.

[0032] Optional or preferred solution, as Figure 4 , Figure 5 shown, the lower die quick locking device 13 includes a set of guide bushing mounting plates 131, guide bushings 132, push - pull toggle clamps 133, toggle clamp mounting blocks 134 and sliding plug plates 135. The guide bushing mounting plates 131 are arranged on both sides of the lower mounting plate 11 of the mold press, and at least two guide bushings 132 are installed on the guide bushing mounting plates 131;

[0033] The sliding plug plate 135 is inserted into the side of the lower mounting plate 11 of the mold press and can extend below the guide bushing 132. The sliding plug plate 135 is connected to the push - pull toggle clamp 133, and the push - pull toggle clamp 133 is installed on the lower mounting plate 11 of the mold press through the toggle clamp mounting block 134.

[0034] As Figure 7 shown, guide posts 211 are provided on the lower surface of the lower cover plate 21 of the mold, and the guide posts 211 can be inserted into the guide bushings 132.

[0035] As Figure 6 and Figure 7 shown, the end of the sliding plug plate 135 is provided with a plug plate inclined top surface 1351, a guide post inclined surface notch 2111 is formed in the middle of the guide post 211, and the plug plate inclined top surface 1351 can fit with the guide post inclined surface notch 2111.

[0036] As Figure 8 shown, the upper die quick locking device 14 includes a group of limit blocks 141, a plug pin 142 and a limit plug plate 143. The limit blocks 141 are arranged on both sides of the upper mounting plate 12 of the molding press. A pin hole is formed on the side surface of the limit block 141. The plug pin 142 is inserted into the pin hole, and the limit plug plate 143 is inserted into the gap between the limit block 141 and the upper die cover plate 22 of the mold.

[0037] As Figure 9 , Figure 10 shown, a rectangular groove is formed in the limit block 141 along its length direction. Locking ears 221 are arranged on both sides of the upper die cover plate 22 of the mold. The cross section of the limit plug plate 143 is step-shaped. The limit plug plate 143 is inserted into the rectangular groove and abuts against the locking ears 221. A pin hole is formed on the side surface of the limit plug plate 143. The plug pin 142 is inserted into the pin holes of the limit block 141 and the limit plug plate 143.

[0038] Please refer to Figure 8 again. A positioning hole 121 is arranged at the center of the upper mounting plate 12 of the molding press, and a positioning ring 222 is arranged at the center of the upper die cover plate 22 of the mold. The positioning ring 222 cooperates with the positioning hole 121.

[0039] As Figures 1-3 shown, the upper mounting plate 12 of the molding press is installed on the molding press 1 in a liftable manner through a slide rail, and the upper mounting plate 12 of the molding press is connected with a lift driving cylinder.

[0040] The mold changing process of a rapid mold changing device for an injection mold disclosed by the present utility model is as follows:

[0041] The molding press 1 enters the mold changing state. The mold 2 is transported directly above the lower die mounting plate 11 of the molding press. The guide posts 211 on the lower die cover plate 21 of the mold are aligned with the guide sleeves 132 on the lower die mounting plate 11 of the molding press, and then the mold 2 is lowered.

[0042] When the guide posts 211 are completely inserted into the guide sleeves 132, the push-pull toggle clamp 133 on the lower die quick locking device 13 is closed. During the closing process of the push-pull toggle clamp 133, the sliding plug plate 135 is pushed out and inserted into the guide posts 211. At this time, the plug plate inclined top surface 1351 on the sliding plug plate 135 is stuck into the guide post notch inclined surface 2111 on the guide posts 211 to apply a force obliquely downward, so as to fix the lower die cover plate 21 of the mold on the lower die mounting plate 11 of the molding press.

[0043] The molding press 1 moves the lower die mounting plate 11 of the molding press and the die 2 to the molding position. Then, the molding press 1 extends and lowers the upper die mounting plate 12 of the molding press onto the upper cover plate 22 of the die and presses it down. At this time, the positioning ring 222 on the upper cover plate 22 of the die is docked with the positioning hole 121 on the upper die mounting plate 12 of the molding press. Subsequently, the limit insertion plate 143 is inserted into the gap between the limit block 141 and the upper cover plate 22 of the die. After the limit insertion plate 143 is in place, the bolt 142 is closed and inserted into the corresponding pin holes of the limit insertion plate 143, the limit block 141, and the upper cover plate 22 of the die. At this time, the upper cover plate 22 of the die is positioned at the center by the positioning ring 222 and the positioning hole 121, and is positioned left and right and up and down by the limit insertion plate 143 and the limit block 141, thereby fixing the upper cover plate 22 of the die on the upper die mounting plate 12 of the molding press, and the die installation is completed.

[0044] Vice versa, when disassembling the die 2, it is only necessary to open the bolt 142, pull out the limit insertion plate 143, and open the push-pull toggle clamp 133.

[0045] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements can still be made, and these improvements should also be regarded as the protection scope of the present invention.

Claims

1. A rapid die change device for an injection mold, characterized in that: It includes a molding press (1) and a mold (2), and the mold (2) is detachably installed on the molding press (1). The molding press (1) includes a lower mounting plate (11) of the molding press, an upper mounting plate (12) of the molding press, a lower mold quick locking device (13) and an upper mold quick locking device (14). The lower mold quick locking device (13) is arranged on the lower mounting plate (11) of the molding press, and the upper mold quick locking device (14) is arranged on the upper mounting plate (12) of the molding press. The mold (2) includes an upper cover plate (22) of the mold and a lower cover plate (21) of the mold. The upper cover plate (22) of the mold is connected to the upper mounting plate (12) of the molding press through the upper mold quick locking device (14), and the lower cover plate (21) of the mold is connected to the lower mounting plate (11) of the molding press through the lower mold quick locking device (13).

2. The quick die change device for an injection mold according to claim 1, wherein: The lower mold quick locking device (13) includes a group of guide sleeve mounting plates (131), guide sleeves (132), push-pull toggle clamps (133), toggle clamp mounting blocks (134) and sliding plug plates (135). The guide sleeve mounting plates (131) are arranged on both sides of the lower mounting plate (11) of the molding press, and at least two guide sleeves (132) are installed on the guide sleeve mounting plates (131). The sliding plug plate (135) is inserted into the side surface of the lower mounting plate (11) of the molding press and can extend below the guide sleeve (132). The sliding plug plate (135) is connected to the push-pull toggle clamp (133), and the push-pull toggle clamp (133) is installed on the lower mounting plate (11) of the molding press through the toggle clamp mounting block (134).

3. The quick die change device for an injection mold according to claim 2, characterized in that: Guide posts (211) are arranged on the lower surface of the lower cover plate (21) of the mold, and the guide posts (211) can be inserted into the guide sleeves (132).

4. The quick die change device for an injection mold according to claim 3, wherein: An inclined top surface (1351) of the plug plate is arranged at the end of the sliding plug plate (135), and an inclined surface notch (2111) of the guide post is opened in the middle of the guide post (211). The inclined top surface (1351) of the plug plate can fit with the inclined surface notch (2111) of the guide post.

5. A rapid die change device for an injection mold according to claim 1, characterized in that: The upper mold quick locking device (14) includes a group of limit blocks (141), pins (142) and limit plug plates (143). The limit blocks (141) are arranged on both sides of the upper mounting plate (12) of the molding press. A pin hole is arranged on the side surface of the limit block (141). The pin (142) is inserted into the pin hole, and the limit plug plate (143) is inserted into the gap between the limit block (141) and the upper cover plate (22) of the mold.

6. The rapid mold change device for an injection mold according to claim 5, wherein: A rectangular groove is opened along the length direction of the limit block (141). Locking ears (221) are arranged on both sides of the upper cover plate (22) of the mold. The cross section of the limit plug plate (143) is stepped. The limit plug plate (143) is inserted into the rectangular groove and abuts against the locking ears (221). A pin hole is arranged on the side surface of the limit plug plate (143), and the pin (142) is inserted into the pin holes of the limit block (141) and the limit plug plate (143).

7. The rapid die change device for an injection mold according to claim 1, wherein: A positioning hole (121) is arranged at the center of the upper mounting plate (12) of the molding press, and a positioning ring (222) is arranged at the center of the upper cover plate (22) of the mold. The positioning ring (222) is matched with the positioning hole (121).

8. The quick die change device for an injection mold according to claim 1, characterized in that: The upper mounting plate (12) of the molding press is mounted on the molding press (1) in a liftable manner through slide rails, and the upper mounting plate (12) of the molding press is connected to a lifting drive cylinder.