CN119058002A - Automatic demoulding tooling for rubber products - Google Patents
Automatic demoulding tooling for rubber products Download PDFInfo
- Publication number
- CN119058002A CN119058002A CN202411564657.0A CN202411564657A CN119058002A CN 119058002 A CN119058002 A CN 119058002A CN 202411564657 A CN202411564657 A CN 202411564657A CN 119058002 A CN119058002 A CN 119058002A
- Authority
- CN
- China
- Prior art keywords
- air
- ejector rod
- cavity
- movable plate
- communicated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/50—Removing moulded articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/50—Removing moulded articles
- B29C2043/503—Removing moulded articles using ejector pins, rods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/50—Removing moulded articles
- B29C2043/5053—Removing moulded articles using pressurised gas, e.g. air
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to an automatic demolding tool for rubber products, which is applied to the field of rubber product production equipment, and comprises an ejector rod, wherein a through hole for the ejector rod to slide through is formed in the bottom of a mold, the ejector rod is of a hollow pipe structure, an air outlet hole is formed in the upper end of the ejector rod, the upper end face of the ejector rod is horizontal to the inner bottom wall of the mold under a normal state, the air outlet hole is positioned on the inner wall of the through hole to form a closed state, a connecting piece comprises a movable plate which is fixed with the lower end of the ejector rod and is fixed with the upper end of an output shaft of an ejection cylinder, an air bag is arranged between the upper surface of the movable plate and the bottom surface of the mold, the negative pressure state between the rubber product and the mold is eliminated by adopting the structures of the air outlet hole, the air bag and the like, further entering air can assist in ejecting the rubber product, so that the auxiliary demolding effect is achieved, compared with the traditional mechanical ejection, the friction force between the rubber product and the mold is reduced, the abrasion probability of the rubber product is reduced, and the yield after the rubber product is demolded is ensured.
Description
Technical Field
The invention relates to an automatic demolding tool, in particular to an automatic demolding tool for rubber products, which is applied to the field of rubber product production equipment.
Background
The main molding techniques of rubber products include compression molding, transfer molding, winding and injection molding, wherein the compression molding (also called compression molding or compression molding) is a process of putting powdery, granular or fibrous plastics into a mold cavity at a molding temperature, closing the mold, pressurizing to mold and solidifying the plastics.
At present, the existing compression molding die for rubber is completely embedded into the cavity of the female die after die opening due to the fact that the rubber product is subjected to larger pressure before die opening, so that the product is difficult to be demolded, a large amount of occupied ratio of manual demolding is maintained, production efficiency is low, the product is required to be manually taken out of the die after demolding is finished, potential safety hazards in the production process are definitely increased, the degree of automation is low, safety production is not facilitated, and therefore a certain improvement space is provided.
In order to solve the problem of lower automation degree, the automatic demolding device for the liquid rubber product in the market adopts a linkage device to perform automatic demolding, and has a certain market occupation ratio.
The utility model discloses a Chinese patent CN218776942U specification discloses an automatic demolding device for liquid rubber products, which relates to the technical field of automobile rubber product production and comprises a lifting rod, an upper die holder and a female die, wherein a baffle shaft is connected in a sliding manner in a guide groove, a pull block is fixedly connected to the lower side of the lifting rod, a pull rod is connected in a sliding manner in a guide block, a push shaft is connected in a sliding manner in a first guide rail, and the slide shaft is arranged in a second guide rail in a sliding manner.
In the automatic demolding device for rubber products and similar existing demolding devices, a mechanical demolding mode is generally directly used, namely, a plate or a rod is directly lifted, so that the rubber products in the mold are ejected and demolded, but in the actual use process, a relatively tight fitting relation exists between the rubber products and the mold after compression molding, a negative pressure state is formed, and in the state, the rubber products and the mold are easily caused to have larger friction force by directly using ejection and demolding, so that certain damage is caused to the rubber products in the demolding process, and the yield after demolding is reduced.
Disclosure of Invention
The invention aims at solving the technical problems of eliminating the negative pressure state between the rubber product and the mould and reducing the friction force between the rubber product and the mould when demoulding.
In order to solve the problems, the invention provides an automatic demolding tool for rubber products, which comprises a mounting bracket, wherein a mold is fixed on the mounting bracket, a stamping head matched with the mold is arranged above the mold, the stamping head is connected with the top of the mounting bracket in a distance-adjustable manner through a stamping cylinder, an ejection cylinder is fixed at the bottom of the mounting bracket, an output shaft of the ejection cylinder extends upwards and is fixed with an ejection rod through a connecting piece, and a through hole for the ejection rod to slide and penetrate is formed in the bottom of the mold;
The ejection rod is of a hollow pipe structure, the upper end of the ejection rod is provided with an air outlet hole, the upper end surface of the ejection rod is level with the inner bottom wall of the die in a normal state, and the air outlet hole is positioned on the inner wall of the through hole to form a closed state;
the connecting piece comprises a movable plate which is fixed with the lower end of the ejector rod and with the upper end of an output shaft of the ejector cylinder, an air bag is arranged between the upper surface of the movable plate and the bottom surface of the die, and the lower end of the air bag is communicated with the inside of the ejector rod through an air transmission structure.
In the automatic demolding tool for the rubber product, after stamping is finished, the ejection cylinder drives the ejection rod to synchronously rise through the movable plate, so that the ejection rod passes through the through hole to prop against the bottom of the rubber product and further ejects the rubber product out of the mold to finish demolding, in the process, the movable plate moves to the inside of the ejection rod through the gas transmission structure after moving, air in the air bag rises to the inside of the ejection rod after being extruded, the air is discharged from the air outlet hole after rising to the air outlet hole higher than the through hole, and enters into a space between the mold and the rubber product, thereby eliminating the negative pressure state between the rubber product and the mold, further entering air can assist in ejecting the rubber product to achieve the effect of assisting demolding, and compared with the traditional mechanical ejection, the friction force between the rubber product and the mold is reduced, thereby reducing the abrasion probability of the rubber product and ensuring the yield after demolding of the rubber product.
As a further supplement of the application, the air conveying structure comprises an air cavity formed in the movable plate, the air cavity is communicated with the lower end of the air bag, and the air cavity is communicated with the inside of the ejector rod.
As a further supplement of the application, the gas transmission structure also comprises a gas transmission pipe, wherein the upper end of the gas transmission pipe is fixed with the lower end of the air bag and communicated with the air bag, and the lower end of the gas transmission pipe is fixed in the movable plate and communicated with the air cavity.
As a further supplement to the application, the air delivery pipe is a hose made of elastic material.
As a further supplement of the application, the round edge of the bottom surface of the die intersected with the inner wall of the through hole is provided with an inclined surface, and the diameter of the bottom of the inclined surface is larger than the outer diameter of the ejector rod.
As a further improvement of the application, the lower end of the mounting bracket is a closed workbench, a cavity is formed between the inside of the mounting bracket and the bottom wall of the die, and the cavity is communicated with the inside of the ejector rod through a ventilation structure.
As a further improved supplement of the application, the ventilation structure comprises an air cavity and a second air inlet hole, wherein the air cavity is formed in the movable plate and is communicated with the inside of the ejector rod, and the second air inlet hole is arranged on the upper end surface of the movable plate and is communicated with the cavity and the air cavity.
In addition to the further improvement of the application, the side wall of the mounting bracket is provided with a first air inlet hole communicated with the cavity, and the upper surface of the movable plate is horizontal to the central axis of the first air inlet hole when the movable plate does not move upwards.
In the process, when the movable plate moves, the air in the air bag enters the air cavity through the air pipe after being extruded, and further enters the ejection rod from the air cavity, and is discharged from the air outlet after rising to the air outlet higher than the through hole in the ejection rod, and enters the space between the die and the rubber product, so that the negative pressure state between the rubber product and the die is eliminated, the further entering air can assist in ejecting the rubber product, the auxiliary ejection effect is achieved, compared with the traditional mechanical ejection, the friction force between the rubber product and the die is reduced, the abrasion probability of the rubber product is reduced, and the yield of the rubber product after ejection is ensured.
Drawings
Fig. 1 is a schematic perspective view of embodiment 1 of the present application;
FIG. 2 is a partial cross-sectional view of embodiment 1 of the present application;
FIG. 3 is an enlarged view of the structure of FIG. 2 at A;
FIG. 4 is a bottom view of the mold of embodiment 1 of the present application;
FIG. 5 is a schematic view showing the flow direction of air flow when the rubber product is ejected according to embodiment 1 of the present application;
fig. 6 is a schematic perspective view of embodiment 2 of the present application;
FIG. 7 is a partial cross-sectional view of embodiment 2 of the present application;
FIG. 8 is a schematic view showing the flow direction of air when the rubber product is ejected according to embodiment 2 of the present application.
The reference numerals in the figures illustrate:
1. The device comprises a mounting bracket, 11, a first air inlet hole, 12, a cavity, 2, a die, 21, a through hole, 22, an inclined plane, 3, a stamping head, 4, a stamping cylinder, 5, an ejection cylinder, 6, a movable plate, 61, an air cavity, 62, a second air inlet hole, 7, an ejection rod, 71, an air outlet hole, 8, an air bag, 81 and an air pipe.
Detailed Description
2 Embodiments of the present application will be described in detail with reference to the accompanying drawings.
Embodiment 1:
The invention provides an automatic demolding tool for rubber products, referring to fig. 1-3, which comprises a mounting bracket 1, wherein a die 2 is fixed on the mounting bracket 1, a stamping head 3 matched with the die 2 is arranged above the die 2, the stamping head 3 is connected with the top of the mounting bracket 1 in a distance-adjustable manner through a stamping cylinder 4, an ejection cylinder 5 is fixed at the bottom of the mounting bracket 1, an output shaft of the ejection cylinder 5 extends upwards and is fixed with an ejection rod 7 through a connecting piece, and a through hole 21 for the ejection rod 7 to slide and penetrate is formed in the bottom of the die 2;
The stamping cylinder 4 drives the stamping head 3 to descend for stamping forming, and after forming, the stamping cylinder 4 drives the stamping head 3 to ascend to separate from the rubber product, so that the rubber product stays in the die 2 to finish manufacturing.
The ejector rod 7 is of a hollow pipe structure, the upper end of the ejector rod 7 is provided with an air outlet hole 71, the upper end surface of the ejector rod 7 is horizontal to the inner bottom wall of the die 2 in a normal state, and the air outlet hole 71 is positioned on the inner wall of the through hole 21 to form a closed state;
The connecting piece includes fixed fly leaf 6 with ejector rod 7 lower extreme and with ejector cylinder 5's output shaft upper end fixed, is provided with gasbag 8 between fly leaf 6 upper surface and the mould 2 bottom surface, and gasbag 8 lower extreme passes through gas-supply structure and ejector rod 7 inside intercommunication.
According to the structure, after stamping is completed, the ejection cylinder 5 drives the ejection rod 7 to synchronously ascend through the movable plate 6, so that the ejection rod 7 passes through the through hole 21 to prop against the bottom of a rubber product and further eject the rubber product out of the die 2, in the process, the movable plate 6 extrudes the air bag 8 when moving, the air in the air bag 8 moves to the inside of the ejection rod 7 through the air transmission structure after being extruded, the air in the air bag 8 ascends to the inside of the ejection rod 7 until the air outlet 71 is higher than the through hole 21 and is discharged from the air outlet 71 and enters the space between the die 2 and the rubber product, the negative pressure state between the rubber product and the die 2 is eliminated, the further entered air can assist in ejecting the rubber product, the auxiliary demolding effect is achieved, compared with the traditional mechanical ejection, the friction force between the rubber product and the die 2 is reduced, and the abrasion probability of the rubber product is lowered, and the yield after the rubber product is ejected is guaranteed.
Fig. 2 shows that the air delivery structure includes an air chamber 61 formed in the movable plate 6, the air chamber 61 communicating with the lower end of the air bag 8, the air chamber 61 communicating with the inside of the ejector rod 7.
Through the setting of air cavity 61 for by the inside entering ejector rod 7 that exhaust air can be even in the gasbag 8, the air pressure distribution that makes the venthole 71 of a plurality of ejector rods 7 extrude is comparatively even, thereby can be steady carry out ejecting with the rubber goods, avoid the slope that the rubber goods leads to because of the local atmospheric pressure is different.
Fig. 2 shows that the air delivery structure further comprises an air delivery pipe 81, wherein the upper end of the air delivery pipe 81 is fixed with the lower end of the air bag 8 and communicated with the air bag 8, the lower end of the air delivery pipe 81 is fixed in the movable plate 6 and communicated with the air cavity 61, and the air delivery pipe 81 is a hose made of elastic materials.
Through the setting of gas-supply pipe 81, stable connection gasbag 8 and air cavity 61 for the air in the gasbag 8 can get into in the air cavity 61 smoothly, can avoid appearing hard contact between fly leaf 6 and the gasbag 8 with the gas-supply pipe 81 to set up into the elasticity hose, leads to the gasbag 8 to damage.
Fig. 4 shows that the circular edge of the bottom surface of the die 2 intersecting with the inner wall of the through hole 21 is provided with an inclined surface 22, the diameter of the bottom of the inclined surface 22 is larger than the outer diameter of the ejector rod 7, and the ejector rod 7 is convenient to insert into the through hole again after being separated from the through hole 21 through the arrangement of the inclined surface 22, so that a worker can maintain and replace the ejector rod 7 conveniently.
Embodiment 2:
Fig. 7 shows an automatic demolding tool for rubber products, which is different from embodiment 1 in that the lower end of the mounting bracket 1 is a closed workbench, a cavity 12 is formed between the inside of the mounting bracket 1 and the bottom wall of the mold 2, and the cavity 12 is communicated with the inside of the ejector rod 7 through a ventilation structure.
Based on the above structure, when the movable plate 6 moves upward, the air in the cavity 12 is extruded, so that the air is extruded into the ejector rod 7, and further enters the gap between the rubber product and the die 2 through the air outlet 71, the negative pressure is eliminated, the demolding is convenient, and compared with the embodiment 1, the setting of the air bag is reduced, so that the maintenance is more convenient.
Fig. 7 shows that the ventilation structure includes an air cavity 61 and a second air intake hole 62, the air cavity 61 is formed in the movable plate 6, the air cavity 61 is communicated with the inside of the ejector rod 7, and the second air intake hole 62 is opened at the upper end surface of the movable plate 6 and communicates the cavity 12 with the air cavity 61.
Through the arrangement of the air cavity 61 and the second air inlet holes 62, when the movable plate 6 extrudes air in the cavity 12, the air enters the air cavity 61 through the second air inlet holes 62 and enters the ejector rod 7 through the air cavity 61, so that the air is ensured to smoothly enter a gap between a rubber product and the die 2, and auxiliary demolding is performed.
Fig. 6-7 show that the side wall of the mounting bracket 1 is provided with a first air inlet hole 11 communicated with the cavity 12, the upper surface of the movable plate 6 is horizontal to the central axis of the first air inlet hole 11 when the movable plate 6 does not move upwards, and through the arrangement of the first air inlet hole 11, when the movable plate 6 extrudes air in the cavity 12, the outside air can have the first air inlet hole 11 to enter the area below the movable plate 6 in the cavity 12, so that negative pressure is prevented from being formed below the movable plate 6, the output power of the ejection cylinder 5 can be saved, and the aim of extruding the air in the cavity 12 is smoothly fulfilled.
The present application is not limited to the above-described embodiments, which are adopted in connection with the actual demands, and various changes made by the person skilled in the art without departing from the spirit of the present application are still within the scope of the present application.
Claims (6)
1. The utility model provides an automatic drawing of patterns frock of rubber products, includes installing support (1), be fixed with mould (2) on installing support (1), mould (2) top is provided with stamping head (3) with mould (2) adaptation, stamping head (3) are connected with installing support (1) top adjustable distance through punching press cylinder (4), installing support (1) bottom is fixed with ejecting cylinder (5), the output shaft of ejecting cylinder (5) upwards extends and is fixed with ejector rod (7) through the connecting piece, through-hole (21) that supply ejector rod (7) to run through are slided in mould (2) bottom, its characterized in that:
the ejector rod (7) is of a hollow pipe structure, the upper end of the ejector rod (7) is provided with an air outlet hole (71), the upper end surface of the ejector rod (7) is level with the inner bottom wall of the die (2) in a normal state, and the air outlet hole (71) is positioned on the inner wall of the through hole (21) to form a closed state;
the connecting piece comprises a movable plate (6) which is fixed with the lower end of the ejector rod (7) and with the upper end of an output shaft of the ejector cylinder (5), an air bag (8) is arranged between the upper surface of the movable plate (6) and the bottom surface of the die (2), and the lower end of the air bag (8) is communicated with the inside of the ejector rod (7) through an air transmission structure;
The air conveying structure comprises an air cavity (61) formed in the movable plate (6), the air cavity (61) is communicated with the lower end of the air bag (8), and the air cavity (61) is communicated with the inside of the ejector rod (7);
The air conveying structure further comprises an air conveying pipe (81), the upper end of the air conveying pipe (81) is fixed with the lower end of the air bag (8) and is communicated with the air bag (8), and the lower end of the air conveying pipe (81) is fixed in the movable plate (6) and is communicated with the air cavity (61).
2. The automatic demolding tool for rubber products according to claim 1, wherein the air pipe (81) is a hose made of elastic material.
3. The automatic demolding tool for rubber products, as set forth in claim 1, is characterized in that an inclined surface (22) is formed on a round edge where the bottom surface of the mold (2) is intersected with the inner wall of the through hole (21), and the bottom diameter of the inclined surface (22) is larger than the outer diameter of the ejector rod (7).
4. The automatic demolding tool for rubber products, as set forth in claim 1, is characterized in that the lower end of the mounting bracket (1) is a closed workbench, a cavity (12) is formed between the inside of the mounting bracket (1) and the bottom wall of the mold (2), and the cavity (12) is communicated with the inside of the ejector rod (7) through a ventilation structure.
5. The automatic demolding tool for rubber products according to claim 1, wherein the ventilation structure comprises an air cavity (61) and a second air inlet hole (62), the air cavity (61) is formed in the movable plate (6), the air cavity (61) is communicated with the inside of the ejector rod (7), and the second air inlet hole (62) is formed in the upper end face of the movable plate (6) and is communicated with the cavity (12) and the air cavity (61).
6. The automatic demolding tool for rubber products, as set forth in claim 1, is characterized in that a first air inlet hole (11) communicated with the cavity (12) is formed in the side wall of the mounting bracket (1), and the upper surface of the movable plate (6) is horizontal to the central axis of the first air inlet hole (11) when the movable plate is not moved upwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411564657.0A CN119058002A (en) | 2024-11-05 | 2024-11-05 | Automatic demoulding tooling for rubber products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411564657.0A CN119058002A (en) | 2024-11-05 | 2024-11-05 | Automatic demoulding tooling for rubber products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119058002A true CN119058002A (en) | 2024-12-03 |
Family
ID=93637337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411564657.0A Pending CN119058002A (en) | 2024-11-05 | 2024-11-05 | Automatic demoulding tooling for rubber products |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119058002A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328317A (en) * | 2019-07-12 | 2019-10-15 | 王芝义 | A kind of stainless steel materials releasing process |
| CN217454752U (en) * | 2022-06-20 | 2022-09-20 | 深圳市辉达利模具科技有限公司 | Injection mold with automatic demolding device |
| CN115366342A (en) * | 2022-07-21 | 2022-11-22 | 长兴优浩科技有限公司 | An injection mold for easy cooling and demoulding |
| CN218611401U (en) * | 2022-11-18 | 2023-03-14 | 青岛柏丽铝业有限公司 | Aluminum foil cutlery box stamping die's ejection mechanism |
| CN219634423U (en) * | 2023-02-27 | 2023-09-05 | 河源市创粤模具有限公司 | Support type plastic mould demoulding mechanism |
| CN221315046U (en) * | 2024-01-24 | 2024-07-12 | 温州逸航鞋业有限公司 | Injection molding shoe forming die |
-
2024
- 2024-11-05 CN CN202411564657.0A patent/CN119058002A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328317A (en) * | 2019-07-12 | 2019-10-15 | 王芝义 | A kind of stainless steel materials releasing process |
| CN217454752U (en) * | 2022-06-20 | 2022-09-20 | 深圳市辉达利模具科技有限公司 | Injection mold with automatic demolding device |
| CN115366342A (en) * | 2022-07-21 | 2022-11-22 | 长兴优浩科技有限公司 | An injection mold for easy cooling and demoulding |
| CN218611401U (en) * | 2022-11-18 | 2023-03-14 | 青岛柏丽铝业有限公司 | Aluminum foil cutlery box stamping die's ejection mechanism |
| CN219634423U (en) * | 2023-02-27 | 2023-09-05 | 河源市创粤模具有限公司 | Support type plastic mould demoulding mechanism |
| CN221315046U (en) * | 2024-01-24 | 2024-07-12 | 温州逸航鞋业有限公司 | Injection molding shoe forming die |
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Application publication date: 20241203 |
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| RJ01 | Rejection of invention patent application after publication |