Mould for producing rubber film

Abstract

The utility model discloses a mould for producing a rubber leather film, which relates to the technical field of leather film production equipment and comprises a bottom plate, a hot concave mould arranged on the bottom plate and a hot convex mould arranged above the hot concave mould in a sliding manner, a transverse frame is transversely fixed at the top of the hot convex mould, and air cylinders are arranged between the two ends of the transverse frame and the bottom plate. The limiting piece is used for preventing a blank from deviating in the mold closing process, and the material ejecting mechanism is used for improving the material taking speed of a formed membrane; according to the utility model, through the arrangement of the limiting piece, when the diaphragm blank is subjected to heat treatment, the diaphragm blank to be processed is placed on the opening of the die cavity of the hot female die in advance, the blank is positioned among the four groups of limiting rods, and the side wall of the blank is propped against the limiting rods, so that the four groups of limiting rods are matched with one another, and the blank can be effectively limited; and the blank is prevented from deviating in the die assembly process of the hot male die and the hot female die, so that the hot extrusion treatment quality is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of film production equipment, in particular to a mold for producing rubber films. Background Art

[0002] Rubber membrane is used in automobile brake parts. It is a kind of rubber diaphragm sealing product. It is a rubber sandwich fabric diaphragm suitable for transmitting pressure in automobile brake chamber. During production, the rubber diaphragm needs to be hot-pressed by using hot-pressing punch and hot-pressing die to cooperate with each other for hot extrusion treatment.

[0003] In the prior art, when hot extrusion of rubber films is performed, the rubber film blank is often simply placed on the hot pressing die. Once the blank is disturbed and shifted during the mold closing process, the hot extrusion effect of the mold on the blank will be seriously reduced, affecting the production quality. Moreover, after the hot extrusion process is completed, the rubber parts are often tightly fitted in the mold cavity of the hot pressing die, which is very inconvenient for manual removal of the molded die later, thereby reducing production efficiency. Utility Model Content

[0004] In order to solve the above technical problems, a mold for rubber film production is provided, which solves the problem in the prior art that once the blank is disturbed and offset during the mold closing process, the hot extrusion processing effect of the mold on the blank will be seriously reduced, affecting the production quality. After the hot extrusion processing is completed, the rubber parts are mostly tightly fitted in the mold cavity of the hot pressing die, which is very inconvenient for manual removal of the molded mold piece in the later stage.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a mold for rubber film production, including a bottom plate, a hot die set on the bottom plate, and a hot convex mold slidably set above the hot die, a cross frame is transversely fixed on the top of the hot convex mold, and cylinders are installed between the two ends of the cross frame and the bottom plate, and also includes a limiting member for preventing the blank from shifting during the mold closing process and a material ejection mechanism for increasing the material taking rate of the formed diaphragm;

[0006] The limiting member is four groups of limiting rods arranged around the top surface of the hot die, and the mold cavity of the hot die is located between the four groups of limiting rods;

[0007] The ejection mechanism includes a push plate slidably arranged in the cavity of the hot die, a drive seat fixed to the bottom end of the hot die, and an elastic telescopic rod arranged in the central part of the inner cavity of the drive seat, a power component cooperating with the limiting rod is arranged on the side of the elastic telescopic rod, and an accommodating groove for accommodating the push plate is opened on the inner wall of the bottom end of the hot die.

[0008] Preferably, the elastic telescopic rod includes a shrinking tube with a hollow interior and vertically fixed on the inner wall of the top end of the driving seat, a pressing plate slidably arranged on the inner side of the shrinking tube, and a shrinking rod vertically fixed on one side of the pressing plate, the end of the shrinking rod penetrates into the hot die cavity and is fixedly connected to the push plate, and a compression spring is fixedly connected between the other side of the pressing plate and the inner wall of the bottom end of the shrinking tube.

[0009] Preferably, the power component includes a transmission rod laterally arranged on the side of the shrinking cylinder, a supply seat rotatably sleeved on the middle part of the transmission rod, and a winding roller tightly sleeved on one end of the transmission rod, a pull rope is fixed on the body of the winding roller, the end of the pull rope is inserted into the hot die cavity and fixedly connected to the push plate, and the supply seat is vertically fixed on the inner wall of the bottom end of the driving seat.

[0010] Preferably, the power component also includes a threaded barrel which is vertically rotatably arranged on the inner wall of the bottom end of the driving seat and corresponds to the limiting rod, and a threaded block is threadedly connected to the inner side of the threaded barrel. The bottom end of the limiting rod passes through the hot die and enters the threaded barrel to be fixedly connected to the threaded block. The barrel body of the threaded barrel is connected to the other end of the transmission rod through a bevel gear transmission.

[0011] Compared with the prior art, the advantages of the utility model are:

[0012] (1) By setting the limiting parts, when the diaphragm blank is to be heat treated, the diaphragm blank to be processed is placed on the opening of the hot die cavity in advance, and the blank is located between the four groups of limiting rods, and the side wall of the blank is against the limiting rods. In this way, the four groups of limiting rods cooperate with each other to effectively limit the blank and prevent the blank from being offset during the closing process of the hot punch and the hot die, thereby affecting the quality of the hot extrusion process.

[0013] (2) Through the setting of the ejection mechanism, when the hot punch is moved down and combined with the hot die, the power component can form a downward pulling force on the push plate in advance, so that the push plate shrinks to the inside of the receiving groove, thereby filling the inside of the receiving groove, thereby ensuring the integrity of the hot die cavity and ensuring the molding quality of the diaphragm when the hot punch and the hot die are combined. On the contrary, when the heat treatment of the diaphragm is completed and the hot punch and the hot die are separated, the elastic telescopic rod can quickly push the push plate up and push the diaphragm, and quickly withdraw the diaphragm from the hot die cavity, thereby facilitating manual removal of the formed diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the hot die and the drive seat of the utility model;

[0016] Figure 3 For this utility model Figure 2 Schematic diagram of the structure at point A in the middle.

[0017] The numbers in the figure are:

[0018] 1. Bottom plate; 2. Hot die; 3. Thread block; 4. Threaded barrel; 5. Hot punch; 6. Cross frame; 7. Cylinder; 8. Drive seat; 9. Limit rod; 10. Push plate; 11. Accommodating groove; 12. Transmission rod; 13. Supply seat; 14. Winding roller; 15. Pull rope; 16. Shrinking barrel; 17. Pressing sheet; 18. Shrinking rod; 19. Compression spring. DETAILED DESCRIPTION

[0019] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0020] Reference Figure 1-3 As shown, a mold for producing a rubber film comprises a base plate 1, a hot die 2 arranged on the base plate 1, and a hot convex mold 5 slidably arranged above the hot die 2, a cross frame 6 is transversely fixed to the top of the hot convex mold 5, and cylinders 7 are installed between both ends of the cross frame 6 and the base plate 1;

[0021] When in use, the film to be processed is placed on the hot die 2 in advance, and then the cylinder 7 is turned on. The telescopic rod of the cylinder 7 can drive the cross frame 6 and the hot punch 5 to move downward as a whole until the hot punch 5 and the hot die 2 are fitted together, so that the two can perform hot extrusion treatment on the film.

[0022] However, in practice, when hot extrusion of rubber film is carried out, the rubber film blank is often simply placed on the hot die 2. Once the blank is disturbed and deviates during the mold closing process, the hot extrusion effect of the mold on the blank will be seriously reduced, affecting the production quality. Moreover, after the hot extrusion process is completed, the rubber piece is often tightly fitted in the mold cavity of the hot die 2, which is very inconvenient to manually take the molded die later, reducing the production efficiency.

[0023] In view of this, refer to Figure 2 As shown, it is worth noting that it also includes a limiting member for preventing the blank from shifting during the mold closing process;

[0024] The limiting members are four groups of limiting rods 9 arranged around the top surface of the hot die 2, and the mold cavity of the hot die 2 is located between the four groups of limiting rods 9;

[0025] By setting the limiting parts, when the diaphragm blank is to be heat treated, the diaphragm blank to be processed is placed on the opening of the cavity of the hot die 2 in advance, and the blank is located between the four groups of limiting rods 9, and the side wall of the blank is against the limiting rods 9. In this way, the four groups of limiting rods 9 cooperate with each other to effectively limit the blank and prevent the blank from being offset during the closing process of the hot punch 5 and the hot die 2, thereby affecting the quality of the hot extrusion treatment.

[0026] In addition, refer to Figure 2 As shown, it is worth noting that it also includes a material ejection mechanism for increasing the material taking rate of the formed film;

[0027] The ejecting mechanism includes a push plate 10 slidably arranged in the mold cavity of the hot die 2, a driving seat 8 fixed to the bottom end of the hot die 2, and an elastic telescopic rod arranged in the central part of the inner cavity of the driving seat 8, a power component matched with the limiting rod 9 is arranged on the side of the elastic telescopic rod, and a receiving groove 11 for accommodating the push plate 10 is opened on the inner wall of the bottom end of the hot die 2;

[0028] By setting the ejection mechanism, when the hot punch 5 moves down and closes with the hot die 2, the power component can form a downward pulling force on the push plate 10 in advance, so that the push plate 10 shrinks to the inside of the accommodating groove 11, so as to fill the inside of the accommodating groove 11, thereby ensuring the integrity of the cavity of the hot die 2 and ensuring the molding quality of the diaphragm when the hot punch 5 and the hot die 2 are closed. On the contrary, when the heat treatment of the diaphragm is completed and the hot punch 5 is separated from the hot die 2, the elastic telescopic rod can quickly push the push plate 10 up and push the diaphragm, and quickly withdraw the diaphragm from the cavity of the hot die 2, so as to facilitate manual removal of the formed diaphragm.

[0029] Further, refer to Figure 2 and Figure 3 As shown, it is worth noting that the elastic telescopic rod includes a shrinking tube 16 with a cavity inside and vertically fixed on the inner wall of the top end of the driving seat 8, a pressing piece 17 slidably arranged on the inner side of the shrinking tube 16, and a shrinking rod 18 vertically fixed on one side of the pressing piece 17. The end of the shrinking rod 18 penetrates into the mold cavity of the hot concave mold 2 and is fixedly connected to the push plate 10. A compression spring 19 is fixedly connected between the other side of the pressing piece 17 and the inner wall of the bottom end of the shrinking tube 16.

[0030] The power component includes a transmission rod 12 disposed laterally beside the shrinking cylinder 16, a supply and rotation seat 13 rotatably sleeved on the middle of the shaft of the transmission rod 12, and a winding roller 14 tightly sleeved on one end of the transmission rod 12. A pull rope 15 is fixed to the body of the winding roller 14. The end of the pull rope 15 penetrates into the cavity of the hot die 2 and is fixedly connected to the push plate 10. The supply and rotation seat 13 is vertically fixed to the inner wall of the bottom end of the driving seat 8.

[0031] The power component also includes a threaded barrel 4 which is vertically rotatably arranged on the inner wall of the bottom end of the driving seat 8 and corresponds to the limiting rod 9. The inner side of the threaded barrel 4 is threadedly connected with a threaded block 3. The bottom end of the limiting rod 9 penetrates the hot die 2 and enters the threaded barrel 4 to be fixedly connected with the threaded block 3. The barrel body of the threaded barrel 4 is connected to the other end of the transmission rod 12 through a bevel gear transmission.

[0032] When the hot punch 5 moves down to close the mold with the hot die 2, the limiting rod 9 can be in contact with the hot punch 5 in advance, and be squeezed to shrink inwardly of the driving seat 8 and push down the thread block 3, so that the thread block 3 can drive the thread barrel 4 to rotate by the thread structure during the downward movement, and the rotating thread barrel 4 is driven by the bevel gear to drive the driving rod 12 and the winding roller 14, so that the winding roller 14 winds up the pull rope 15 and pulls down the push plate 10, and the push plate 10 is forced to move downwardly to the inside of the accommodating groove 11;

[0033] During this time, the push plate 10 can synchronously use the contraction rod 18 to push the pressure plate 17 down, so that the pressure plate 17 continuously compresses the compression spring 19 in the contraction tube 16 and deforms. By utilizing the elastic force of the compression spring 19, when the hot punch 5 is separated from the hot die 2, the contraction rod 18 can quickly reset the push plate 10 under the elastic force of the compression spring 19, push up the diaphragm, and increase the demolding rate.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A mold for producing a rubber film, comprising a base plate (1), a hot die (2) arranged on the base plate (1), and a hot convex mold (5) slidably arranged above the hot die (2), a cross frame (6) being laterally fixed to the top of the hot convex mold (5), and cylinders (7) being installed between both ends of the cross frame (6) and the base plate (1), characterized in that: It also includes a limiting member for preventing the blank from deflecting during the mold closing process and a material ejecting mechanism for increasing the material taking rate of the molded film; The limiting members are four groups of limiting rods (9) arranged around the top surface of the hot die (2), and the mold cavity of the hot die (2) is located between the four groups of limiting rods (9); The ejection mechanism comprises a push plate (10) slidably arranged in the mold cavity of the hot die (2), a drive seat (8) fixed to the bottom end of the hot die (2), and an elastic telescopic rod arranged in the central part of the inner cavity of the drive seat (8), a power component cooperating with the limiting rod (9) is arranged on the side of the elastic telescopic rod, and a receiving groove (11) for accommodating the push plate (10) is opened on the inner wall of the bottom end of the hot die (2).

2. A rubber film production mold according to claim 1, characterized in that: The elastic telescopic rod comprises a shrinking tube (16) with a hollow interior and vertically fixed on the inner wall of the top end of the driving seat (8), a pressing plate (17) slidably arranged on the inner side of the shrinking tube (16), and a shrinking rod (18) vertically fixed on one side of the pressing plate (17), the end of the shrinking rod (18) penetrates into the mold cavity of the hot die (2) and is fixedly connected to the push plate (10), and a compression spring (19) is fixedly connected between the other side of the pressing plate (17) and the inner wall of the bottom end of the shrinking tube (16).

3. A rubber film production mold according to claim 2, characterized in that: The power component comprises a transmission rod (12) arranged transversely on the side of the shrinking cylinder (16), a rotation seat (13) rotatably sleeved on the middle part of the rod body of the transmission rod (12), and a winding roller (14) tightly sleeved on one end of the transmission rod (12), a pull rope (15) is fixed on the rod body of the winding roller (14), the end of the pull rope (15) is inserted into the mold cavity of the hot die (2) and is fixedly connected to the push plate (10), and the rotation seat (13) is vertically fixed on the inner wall of the bottom end of the driving seat (8).

4. A rubber film production mold according to claim 3, characterized in that: The power component also includes a threaded barrel (4) which is vertically rotatably arranged on the inner wall of the bottom end of the driving seat (8) and corresponds to the limiting rod (9); a threaded block (3) is threadedly connected to the inner side of the threaded barrel (4); the bottom end of the limiting rod (9) passes through the hot die (2) and penetrates into the threaded barrel (4) to be fixedly connected to the threaded block (3); the barrel body of the threaded barrel (4) is connected to the other end of the transmission rod (12) through a bevel gear transmission.

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