Automatic blanking equipment and blanking method for contractile product vulcanization mold

Abstract

The invention provides automatic blanking equipment of a contractile product vulcanization mold, based on the vulcanization mold, the vulcanization mold comprises a cylindrical core mold, a molded rubber contractile product is vulcanized on the core mold, and the automatic blanking equipment comprises a workbench, a core mold clamp, a pressure plate, a blanking device and a gas flow guide block; a core mold clamp, a material pressing plate and a discharging device are sequentially arranged on the workbench in the Y-axis direction from front to back. The core mold clamp is erected on the workbench, a plurality of core mold cavities used for fixing one end of the core mold are formed in the core mold clamp in the X-axis direction, and the contractile product extends out of the core mold clamp; according to the automatic discharging equipment, products evenly fall off in a gas blowing mode, the products are protected, and the falling-off difficulty of the products is reduced. Therefore, the problem that products are prone to being torn is solved, automatic discharging can be achieved, the production efficiency is high, and the reject ratio is low.

Description

Technical Field

[0001] The invention belongs to the field of automatic blanking equipment, and in particular relates to automatic blanking equipment and a blanking method for a shrinkage product vulcanization mold. Background Art

[0002] Shrinkage products include shock-absorbing balls, shock-absorbing sleeves, shock-absorbing air cushions, rubber bellows and other shrinkage rubber products. Among them, in mechanical seals, rubber bellows are equivalent to an elastic element. When working, the rubber bellows is compressed, and a certain elastic force is generated due to the resilience of the rubber material, which can provide the required end face pressure for the end face of the sealing ring. At present, the production of rubber bellows usually adopts the vulcanization process. The rubber vulcanization mold in the vulcanization process usually includes an upper mold, a lower mold and a core mold; a core mold is set between the upper mold and the lower mold; after the rubber bellows is vulcanized and formed, the rubber bellows is usually put on the core mold; when unloading, it is usually necessary to manually take the product from the core mold, the product is prone to tearing, the production efficiency is low, and the product defect rate is high. Summary of the invention

[0003] In view of this, the present invention aims to propose an automated unloading device and method for a shrinkage product vulcanization mold, so that the product is easier to fall off through gas blowing and the product is prevented from being torn; the unloading device realizes automatic unloading, improves production efficiency and reduces product defective rate.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows: The present invention provides an automatic unloading device for a shrinkage product vulcanization mold, based on a vulcanization mold, the vulcanization mold comprises a cylindrical core mold, a molded rubber shrinkage product is vulcanized on the core mold, the device comprises a workbench, a core mold fixture, a pressing plate, an unloading device and a gas guide block; the core mold fixture, the pressing plate and the unloading device are arranged on the workbench in sequence from front to back along the Y-axis direction; The core mold fixture is mounted on a workbench, and a plurality of core mold cavities for fixing one end of the core mold are arranged inside the core mold fixture along the X-axis direction, and the shrinkable product extends to the outside of the core mold fixture; The pressing plate is arranged in a vertical direction, and is provided with a plurality of contour cavities for pressing against the outer contour of the shrinkable product, and the contour cavities are arranged one by one corresponding to the core mold cavities; The unloading device comprises a Z-axis moving mechanism, a Y-axis moving mechanism and a product fixture, wherein the product fixture comprises an upper clamping block and a lower clamping block, wherein the upper clamping block and the lower clamping block are respectively provided with a contoured groove and an air inlet groove; the upper clamping block and the lower clamping block are respectively connected to the Z-axis moving mechanism, and the Z-axis moving mechanism is used to drive the upper clamping block and the lower clamping block to reciprocate along the Z-axis direction; the Z-axis moving mechanism is arranged on the Y-axis moving mechanism through a mounting plate, and the Y-axis moving mechanism drives the mounting plate, the Z-axis moving mechanism and the product fixture to reciprocate along the Y-axis direction; A gas guide block is arranged behind the product fixture, and a plurality of guide channels are provided inside the gas guide block. One end of the guide channel is connected to an air inlet interface, and the air inlet interface is connected to an air blowing device through a conduit; the other end of the guide channel is connected to the profiling cavity through an air inlet groove and a profiling groove.

[0005] Furthermore, the Z-axis moving mechanism includes a Z-axis guide rail, a Z-axis slider and a Z-axis cylinder. The Z-axis slider is mounted on the Z-axis guide rail. The Z-axis cylinder drives the Z-axis slider to move back and forth along the Z-axis guide rail. The Z-axis slider is connected to the upper clamp block and the lower clamp block through a connecting plate.

[0006] Furthermore, the Y-axis moving mechanism includes a Y-axis guide rail, a Y-axis slider and a Y-axis cylinder; the Y-axis guide rail is equipped with a Y-axis slider, the Y-axis cylinder drives the Y-axis slider to reciprocate along the Y-axis guide rail, and the Z-axis guide rail is connected to the Y-axis slider through a mounting plate.

[0007] Furthermore, both sides of the product mold are mounted on the workbench 1 through a door frame, and a workpiece tray is arranged under the door frame.

[0008] Furthermore, the pressing plate comprises an upper pressing plate and a lower pressing plate, and the upper pressing plate and the lower pressing plate are fixedly connected to the upper clamping block and the lower clamping block respectively.

[0009] Furthermore, the pressing plate is fixedly connected to the core mold fixture.

[0010] Furthermore, the gas guide block is fixedly connected to the mounting plate, and the gas guide block and the product fixture can reciprocate along the Y-axis direction.

[0011] Furthermore, the inflation and blowing device includes a plurality of direct current solenoid valves, and the direct current solenoid valves are used to control the on and off of a plurality of gas paths respectively.

[0012] Furthermore, it also includes a PLC controller and a control button, the control button is connected to the signal input end of the PLC controller, and the signal output end of the PLC controller is respectively connected to the Z-axis cylinder and the Y-axis cylinder.

[0013] The present invention also provides an automatic blanking method for a vulcanization mold for a rubber-like shrinkable product, using the above-mentioned automatic blanking device for the vulcanization mold for shrinkable products, based on a vulcanization mold, wherein the vulcanization mold includes a cylindrical core mold, and a molded rubber-like shrinkable product is vulcanized on the core mold, comprising the following steps: S1, use the core mold clamp to clamp the fixed end of the core mold; S2, placing the core mold and the shrinkable product vulcanized and formed on the core mold in a contour cavity; the contour inside the contour cavity is consistent with the outer contour of the shrinkable product; S3, using a blowing device to blow air toward the contoured cavity along a blowing direction, wherein the blowing direction includes a length direction of the core mold, a length direction of the shrinkable product, and a feeding direction of the shrinkable product; so as to expand the shrinkable product by blowing the airflow; S4, using a product clamp to clamp the blanking end of the shrinkable product, wherein the blanking end and the fixed end are respectively located at two opposite ends of the core mold; S5, using the Y-axis moving mechanism to drive the product fixture to move, pull the unloading end of the shrinkable product, drive the shrinkable product to move along the contour cavity, and peel the shrinkable product from the core mold.

[0014] Compared with the prior art, the automatic blanking equipment and method for the shrinkage product vulcanization mold of the present invention have the following advantages: (1) The automatic unloading equipment for the shrinkable product vulcanization mold of the present invention clamps the core mold through the core mold clamp, and the contour cavity of the press plate carries and wraps the shrinkable product. The gas of the blowing device is blown from the guide channel through the air inlet groove and the contour groove to the contour cavity. The shrinkable product is expanded and separated by air blowing. The unloading device pulls the shrinkable product to move along the contour cavity and peels the shrinkable product from the core mold. The automatic unloading equipment of the present invention uses gas blowing to make the product fall off evenly, protect the product, and reduce the difficulty of product falling off. Thereby solving the problem that the product is easy to tear, and realizing automatic unloading, high production efficiency and low defect rate.

[0015] (2) The automated blanking method for the vulcanization mold of the rubber shrinkable product described in the present invention makes the product fall off evenly by means of gas blowing, thereby protecting the product and reducing the difficulty of product falling off. The production efficiency is high, the defect rate is low, and the cost is saved; and the occurrence of product tearing, white marks, etc. is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of the automated material discharging equipment according to an embodiment of the present invention; Figure 2 A schematic diagram of the internal structure of a gas guide block and its connection structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of an enlarged internal structure of a gas guide block according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the side structure of the automated material discharging equipment according to an embodiment of the present invention; Figure 5It is a schematic diagram of the structure of the Z-axis moving mechanism and the Y-axis moving mechanism according to an embodiment of the present invention; Figure 6 It is a schematic diagram of the core mold fixture and the core mold structure according to an embodiment of the present invention; Figure 7 This is a structural diagram of a rubber-type shrinkable product according to an embodiment of the present invention.

[0017] Description of reference numerals: 1- workbench; 2- core mold fixture; 3- press plate; 4- product fixture; 5- Z-axis moving mechanism; 6- Y-axis cylinder; 7- air inlet interface; 8- Y-axis moving mechanism; 9- gas guide block; 10- blowing device; 11- gantry; 12- workpiece tray; 13- PLC controller; 14- control button; 15- core mold; 16- contractile product; 17-; 21- guide channel; 22- air inlet groove; 23- profiling groove; 24- profiling cavity; 101-201-; 301- Z-axis guide rail; 302- Z-axis cylinder; 303- Z-axis slider; 304- connecting plate; 305- Y-axis guide rail; 306- Y-axis slider; 401- upper clamping block; 402- lower clamping block. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0019] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0020] like Figure 7 As shown, this embodiment takes a rubber bellows-type shrinkable product as an example. In the figure, one side of the rubber bellows 16 is set as a feed end 160, and the feed end 160 is a raised corrugated section.

[0021] like Figure 1 , Figure 6 and Figure 7 As shown, an automatic blanking device for a shrinkage product vulcanization mold is based on a vulcanization mold, the vulcanization mold includes a cylindrical core mold 15, a molded rubber shrinkage product 16 is vulcanized on the core mold 15, and includes a workbench 1, a core mold fixture 2, a pressing plate 3, a blanking device and a gas guide block 9; the core mold fixture 2, the pressing plate 3 and the blanking device are arranged on the workbench 1 in sequence from front to back along the Y-axis direction; like Figure 1 , Figure 6 The core mold fixture 2 is mounted on the workbench 1, and a plurality of core mold cavities 201 for fixing one end of the core mold are arranged inside the core mold fixture 2 along the X-axis direction, and the shrinkable product 16 extends to the outside of the core mold fixture 2; like Figures 1 to 3As shown, the pressing plate 3 is arranged in the vertical direction, and is provided with a plurality of contoured cavities 24 for pressing against the outer contour of the shrinkable product 16, and the contoured cavities 24 are arranged one by one corresponding to the core mold cavities 201; like Figures 4 to 5 As shown, the unloading device includes a Z-axis moving mechanism 5, a Y-axis moving mechanism 8 and a product fixture 4, the product fixture 4 includes an upper clamping block 401 and a lower clamping block 402, the upper clamping block 401 and the lower clamping block 402 are respectively provided with a profiling groove 23 and an air inlet groove 22; the upper clamping block 401 and the lower clamping block 402 are respectively connected to the Z-axis moving mechanism 5, and the Z-axis moving mechanism 5 is used to drive the upper clamping block and the lower clamping block to reciprocate along the Z-axis direction; the Z-axis moving mechanism 5 is arranged on the Y-axis moving mechanism 8 through the mounting plate 30, and the Y-axis moving mechanism 8 drives the mounting plate 30, the Z-axis moving mechanism 5 and the product fixture 4 to reciprocate along the Y-axis direction; like Figures 1 to 3 As shown, a gas guide block 9 is arranged behind the product fixture 4, and a plurality of guide channels 21 are opened inside the gas guide block 9. One end of the guide channel 21 is connected to the air inlet interface 7, and the air inlet interface 7 is connected to the blowing device 10 through a conduit; the other end of the guide channel 21 is connected to the profiling cavity 24 through the air inlet groove 22 and the profiling groove 23.

[0022] The working principle of an automatic unloading device for a shrinkable product vulcanization mold is as follows: first, a core mold 15 and a shrinkable product 16 vulcanized and formed thereon are placed in a core mold fixture 2, the core mold fixture 2 clamps one end of the core mold, and the shrinkable product 16 is located outside the core mold fixture 2; the contour cavity 24 of the pressing plate 3 carries the shrinkable product 16; then, the blowing device 10 is started, and the air flow channel is opened through the guide channel 21 of the gas guide block 9, and the gas is connected to the contour cavity 24 through the guide channel 21 through the air inlet groove 22 and the contour groove 23, and the shrinkable product is expanded and separated by air blowing, so as to achieve the purpose of taking out the product; Finally, the Z-axis moving mechanism 5 is started to drive the upper clamping block 401 and the lower clamping block 402 to move, and the contoured groove 23 is used to tighten one end of the shrinkable product 16; the Y-axis moving mechanism 8 is started to drive the mounting plate 30 and the product fixture 4 to move along the Y-axis direction; the shrinkable product 16 is pulled to move along the contoured cavity, and the shrinkable product 16 is peeled off from the core mold 15; when the shrinkable product 16 is pulled, the contoured cavity 24 plays a role in limiting and protecting the product from tearing; the product is evenly dropped by gas blowing, the product is protected, the difficulty of product dropping is reduced, the production efficiency is high, the defective rate is low, and the cost is saved; the product tearing, white printing, etc. are avoided.

[0023] In this embodiment, the inner contour of the profiling cavity is preferably consistent with the outer contour of the shrinkable product 16, and the inner contour of the profiling cavity is larger than the outer contour of the shrinkable product 16, so that a gap is formed between the inner wall of the profiling cavity and the outside of the shrinkable product 16; the product is protected from tearing during unloading, and the shrinkable product 16 is easily peeled off from the core mold 15.

[0024] like Figures 4 to 5 As shown, the Z-axis moving mechanism 5 includes a Z-axis guide rail 301, a Z-axis slider 303 and a Z-axis cylinder 302. The Z-axis slider 303 is mounted on the Z-axis guide rail 301. The Z-axis cylinder 302 drives the Z-axis slider 303 to move back and forth along the Z-axis guide rail 301. The Z-axis slider 303 is connected to the upper clamping block 401 and the lower clamping block 402 through a connecting plate 304.

[0025] like Figures 4 to 5 As shown, the Y-axis moving mechanism 8 includes a Y-axis guide rail 305, a Y-axis slider 306 and a Y-axis cylinder 6; the Y-axis slider 306 is mounted on the Y-axis guide rail 305, and the Y-axis cylinder 6 drives the Y-axis slider 306 to reciprocate along the Y-axis guide rail 305, and the Z-axis guide rail 301 is connected to the Y-axis slider 306 via a mounting plate 30.

[0026] like Figure 1 As shown, both sides of the product mold 2 are mounted on the workbench 1 through a door frame 11, and a workpiece tray 12 is arranged below the door frame 11. The workpiece tray 12 is used to collect products in a centralized manner.

[0027] As one of the preferred embodiments, Figures 4 to 5 As shown, the pressing plate 3 includes an upper pressing plate 311 and a lower pressing plate 312, and the upper pressing plate 311 and the lower pressing plate 312 are respectively fixedly connected to the upper clamping block 401 and the lower clamping block 402. The upper pressing plate 311 and the lower pressing plate 312 can move with the upper clamping block 401 and the lower clamping block 402.

[0028] As one of the preferred embodiments, the pressing plate 3 is fixedly connected to the core mold fixture 2. The structure is compact, the design is reasonable, and the production is convenient.

[0029] As one of the preferred embodiments, the gas guide block 9 is fixedly connected to the mounting plate 30, and the gas guide block 9 and the product fixture 4 can reciprocate along the Y-axis direction. The gas guide block 9 and the product fixture 4 move synchronously, so that the material can be unloaded while blowing, protecting the product and reducing the difficulty of product falling off.

[0030] like Figure 1As shown, the inflation device 10 includes a plurality of direct current solenoid valves 101, and the direct current solenoid valves 101 are used to control the on and off of a plurality of gas paths respectively. The direct current solenoid valves 101 can control the on and off of each gas path respectively, and the use is more flexible; in this embodiment, the direct current solenoid valve 101 is preferably a direct current solenoid valve DV-24V.

[0031] like Figure 1 As shown, it also includes a PLC controller 13 and a control button 14. The control button 14 is connected to the signal input end of the PLC controller 13, and the signal output end of the PLC controller 13 is connected to the Z-axis cylinder and the Y-axis cylinder respectively. The PLC controller 13 realizes automatic control.

[0032] The present invention also provides an automatic blanking method for a vulcanization mold of a rubber-like shrinkable product, using the automatic blanking device for the vulcanization mold of the shrinkable product, based on the vulcanization mold, the vulcanization mold includes a cylindrical core mold, and a molded rubber-like shrinkable product 16 is vulcanized on the core mold 15, comprising the following steps: S1, using the core mold clamp 2 to clamp the fixed end of the core mold 15; S2, placing the core mold 15 and the shrinkable product 16 vulcanized and molded on the core mold 15 in a contoured cavity; the contour of the contoured cavity is consistent with the outer contour of the shrinkable product 16; S3, using a blowing device to blow air toward the contour cavity along a blowing direction, wherein the blowing direction includes the length direction of the core mold 15, the length direction of the shrinkable product 16, and the feeding direction of the shrinkable product 16; so as to expand the shrinkable product 16 through airflow blowing; S4, using the product clamp 4 to clamp the blanking end of the shrinkable product 16, wherein the blanking end and the fixed end are respectively located at two opposite ends of the core mold 15; S5, using the Y-axis moving mechanism 8 to drive the product fixture 4 to move, pull the unloading end of the shrinkable product 16, drive the shrinkable product 16 to move along the contour cavity, and peel the shrinkable product 16 from the core mold 15.

[0033] The present embodiment provides an automated blanking method for a vulcanization mold for a rubber-type shrinkable product: the product is contoured and wrapped by a contoured cavity, gas is introduced into the product through a guide hole, and the shrinkable product is expanded and dropped by air blowing, so as to achieve the purpose of taking out the product.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic material unloading device for a shrinkage product vulcanization mold, based on a vulcanization mold, wherein the vulcanization mold comprises a cylindrical core mold (15), and a molded rubber shrinkage product (16) is vulcanized on the core mold (15), characterized in that: It comprises a workbench (1), a core mold clamp (2), a pressing plate (3), a material unloading device and a gas guide block (9); the core mold clamp (2), the pressing plate (3) and the material unloading device are arranged on the workbench (1) in order from front to back along the Y-axis direction; The core mold fixture (2) is mounted on a workbench (1), and a plurality of core mold cavities (201) for fixing one end of the core mold are arranged inside the core mold fixture along the X-axis direction, and the shrinkable product (16) extends to the outside of the core mold fixture (2); The pressing plate (3) is arranged in a vertical direction, and is provided with a plurality of contour cavities (24) for pressing against the outer contour of the shrinkable product (16), wherein the contour cavities (24) are arranged in a one-to-one correspondence with the core mold cavities (201); The unloading device comprises a Z-axis moving mechanism (5), a Y-axis moving mechanism (8) and a product fixture (4); the product fixture (4) comprises an upper clamping block (401) and a lower clamping block (402); the upper clamping block (401) and the lower clamping block (402) are respectively provided with a contoured groove (23) and an air inlet groove (22); the upper clamping block (401) and the lower clamping block (402) are respectively connected to the Z-axis moving mechanism (5); the Z-axis moving mechanism (5) is used to drive the upper clamping block and the lower clamping block to reciprocate along the Z-axis direction; the Z-axis moving mechanism (5) is arranged on the Y-axis moving mechanism (8) through a mounting plate (30); the Y-axis moving mechanism (8) drives the mounting plate (30), the Z-axis moving mechanism (5) and the product fixture (4) to reciprocate along the Y-axis direction; A gas guide block (9) is arranged at the rear of the product fixture (4), and a plurality of guide channels (21) are provided inside the gas guide block (9). One end of the guide channel (21) is connected to the air inlet interface (7), and the air inlet interface (7) is connected to the blowing device (10) through a conduit; the other end of the guide channel (21) is connected to the profiling cavity (24) through the air inlet groove (22) and the profiling groove (23).

2. The automatic blanking equipment for a shrinkable product vulcanization mold according to claim 1, characterized in that: The Z-axis moving mechanism (5) comprises a Z-axis guide rail (301), a Z-axis slider (303) and a Z-axis cylinder (302); the Z-axis slider (303) is mounted on the Z-axis guide rail (301); the Z-axis slider (303) is driven by the Z-axis cylinder (302) to reciprocate along the Z-axis guide rail (301); and the Z-axis slider (303) is connected to the upper clamping block (401) and the lower clamping block (402) via a connecting plate 304.

3. The automatic blanking equipment for a shrinkable product vulcanization mold according to claim 2, characterized in that: The Y-axis moving mechanism (8) includes a Y-axis guide rail (305), a Y-axis slider (306) and a Y-axis cylinder (6); the Y-axis guide rail (305) is equipped with the Y-axis slider (306), the Y-axis cylinder (6) drives the Y-axis slider (306) to move back and forth along the Y-axis guide rail (305), and the Z-axis guide rail (301) is connected to the Y-axis slider (306) via a mounting plate (30).

4. The automatic blanking equipment for a shrinkable product vulcanization mold according to claim 1, characterized in that: Both sides of the product mold (2) are mounted on the workbench (1) via a door frame (11), and a workpiece tray (12) is arranged below the door frame (11).

5. The automatic blanking equipment for a shrinkable product vulcanization mold according to claim 1, characterized in that: The pressing plate (3) comprises an upper pressing plate (311) and a lower pressing plate (312), and the upper pressing plate (311) and the lower pressing plate (312) are respectively fixedly connected to the upper clamping block (401) and the lower clamping block (402).

6. The automatic blanking equipment for a shrinkable product vulcanization mold according to claim 1, characterized in that: The pressing plate (3) is fixedly connected to the core mold fixture (2).

7. The automatic blanking equipment for a shrinkable product vulcanization mold according to claim 1, characterized in that: The gas guide block (9) is fixedly connected to the mounting plate (30), and the gas guide block (9) and the product fixture (4) can reciprocate along the Y-axis direction.

8. The automatic blanking equipment for a shrinkable product vulcanization mold according to claim 1, characterized in that: The inflation and blowing device (10) comprises a plurality of direct current solenoid valves (101), and the direct current solenoid valves (101) are used to control the on and off of a plurality of gas paths respectively.

9. The automatic blanking equipment for a shrinkable product vulcanization mold according to claim 1, characterized in that: It also includes a PLC controller (13) and a control button (14), wherein the control button (14) is connected to a signal input end of the PLC controller (13), and a signal output end of the PLC controller (13) is respectively connected to a Z-axis cylinder and a Y-axis cylinder.

10. An automated blanking method for a vulcanization mold for a rubber-like shrinkable product, using the automated blanking device for a vulcanization mold for a shrinkable product according to any one of claims 1 to 9, based on a vulcanization mold, wherein the vulcanization mold comprises a cylindrical core mold, and a molded rubber-like shrinkable product (16) is vulcanized on the core mold (15), characterized in that: The following steps are involved: S1, using a core mold clamp (2) to clamp the fixed end of the core mold (15); S2, placing the core mold (15) and the shrinkable product (16) vulcanized and molded on the core mold (15) in a contoured cavity; the contour inside the contoured cavity is consistent with the outer contour of the shrinkable product (16); S3, using a blowing device to blow air toward the contoured cavity along a blowing direction, wherein the blowing direction includes the length direction of the core mold 15, the length direction of the shrinkable product (16), and the feeding direction of the shrinkable product (16); so as to expand the shrinkable product (16) through airflow blowing; S4, using a product clamp (4) to clamp the blanking end of the shrinkable product (16), wherein the blanking end and the fixed end are respectively located at two opposite ends of the core mold (15); S5, using the Y-axis moving mechanism (8) to drive the product fixture (4) to move, pull the unloading end of the shrinkable product (16), drive the shrinkable product (16) to move along the contour cavity, and peel the shrinkable product (16) from the core mold (15).

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