A synchronous and fast mold opening and closing mechanism for a hollow molding machine

Abstract

The present invention belongs to the technical field of mold opening and closing, and particularly relates to a synchronous and rapid mold opening and closing mechanism for a hollow molding machine, which includes a first installation body and a second installation body. The second installation body is located above the first installation body. A plurality of connecting columns are installed between the first installation body and the second installation body. An opening and closing auxiliary component is installed below the second installation body. The opening and closing auxiliary component includes a connecting plate, a connecting rod group and an installation table. The connecting plate is installed below the second installation body. The connecting rod group is installed between the connecting plate and the installation table. A first mold opening and closing module that is convenient for disassembly is installed below the installation table. A second mold opening and closing module is installed on the upper surface of the first installation body at a position corresponding to the first mold opening and closing module. The invention is more convenient for mold replacement, and has a self-locking function between the mold structures after mold closing, so that it is not necessary to continue applying pressure to the mold to ensure molding, effectively avoiding deformation of the mold under pressure.

Description

Technical Field

[0001] The present invention belongs to the technical field of mold opening and closing, and particularly relates to a synchronous and rapid mold opening and closing mechanism for a hollow molding machine. Background Art

[0002] With the development of the plastic industry in China, the plastic hollow molding machine, as a plastic packaging machine, has been widely used in various fields such as food, chemical industry, and medicine, and is increasingly showing an extremely important role in the national economy. It is the most widely used and the largest in production and sales among plastic machinery varieties in China after injection molding machines and extrusion machines. The hollow molding machine, also known as a hollow blow molding machine, forms products by spraying liquid plastic and then using the wind blown by the machine to attach the plastic body to a mold cavity of a certain shape. Generally, the shape of the products manufactured by the hollow molding machine is determined by the mold.

[0003] The existing hollow molding machine has inconvenient mold replacement, and does not have a self-locking structure during mold opening and closing. After mold closing, continuous pressure still needs to be applied to the mold to ensure product formation, and the mold that is continuously squeezed is prone to deformation problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a synchronous and rapid mold opening and closing mechanism for a hollow molding machine, which is more convenient for mold replacement, and has a self-locking function between the mold structures after mold closing, so that product formation can be ensured without continuing to apply pressure to the mold, effectively avoiding mold deformation under pressure.

[0005] The technical solution adopted by the present invention is specifically as follows:

[0006] A synchronous and rapid mold opening and closing mechanism for a hollow molding machine includes a first installation body and a second installation body. The second installation body is located above the first installation body, and a plurality of connecting columns are installed between the first installation body and the second installation body;

[0007] A mold opening and closing auxiliary component is installed below the second installation body. The mold opening and closing auxiliary component includes a connecting plate, a connecting rod group, and an installation table. The connecting plate is installed below the second installation body, the connecting rod group is installed between the connecting plate and the installation table, and a first mold opening and closing module that is convenient for disassembly is installed below the installation table. A second mold opening and closing module is installed on the upper surface of the first installation body at a position corresponding to the first mold opening and closing module;

[0008] A driving rod component is arranged in the middle of the second installation body.

[0009] In a preferred solution, a self-locking component is arranged between the first mold opening and closing module and the second mold opening and closing module;

[0010] The first opening and closing module includes a first module, a connecting insert, a waste material cutting knife, and a lifting link rod. The connecting insert is installed on the top of the first module. The waste material cutting knife is arranged on one side surface of the first module. The lifting link rod is located inside the first module, and the lifting link rod is slidably connected to the first module and fixed to the waste material cutting knife.

[0011] In a preferred solution, the driving rod assembly includes a first driving rod and a second driving rod. A second locking block is fixed to the bottom of the first driving rod. The second locking block is rotatably connected to the mounting table. The second driving rod is located inside the first driving rod, and the second driving rod is slidably connected to the first driving rod. A stretching rod is fixed to the bottom end of the second driving rod. The stretching rod passes through the mounting table and the first module. A first locking block is fixed to the bottom of the stretching rod. The first locking block is located inside the lifting link rod. A slot is formed at the central position of the lifting link rod. The shape of the slot is the same as that of the first locking block. A locking groove is arranged below the slot. The locking groove is a circular hole.

[0012] In a preferred solution, sliding plates are slidably connected to both sides of the second locking block inside the mounting table. First elastic members are arranged at both ends on one side of the sliding plate. A plug is fixed to the middle of one side of the sliding plate. The plug is aligned with the hollow part of the connecting insert.

[0013] In a preferred solution, the second opening and closing module includes a second module and a lower die groove. The second module is fixed to the upper surface of the first mounting body. The lower die grooves are uniformly arranged on the upper surface of the second module. Upper die grooves are uniformly arranged on the upper surface of the first module. After the first module and the second module are combined, the upper die grooves correspond to the lower die grooves, and the waste material cutting knife is located at the lower die groove.

[0014] In a preferred solution, the self-locking component includes a lifting rod and a locking insertion rod. The lifting rod is installed below both ends of the first module. The locking insertion rod is located at the bottom of the lifting rod. One end of the locking insertion rod is provided with an inclined surface (84a). A hollow groove is arranged in the middle of the locking insertion rod. An inclined block is arranged at the bottom of the lifting rod. The inclined block is located in the hollow groove. The other end of the locking insertion rod is slidably connected to a sleeve. A third elastic member is arranged between the sleeve and the locking insertion rod. Locking slots are arranged on the upper surface of the second module at positions corresponding to the locking insertion rods.

[0015] In a preferred solution, a permanent magnet is arranged on the inclined surface at the hollow groove of the locking insertion rod, and an adsorbent is arranged at the inclined block at the bottom end of the lifting rod. The permanent magnet is adsorbed and connected to the adsorbent.

[0016] In a preferred embodiment, a lifting plate is slidably connected inside the first module. The middle part of the lifting plate is located on the sliding track of the lifting link. Second elastic members are arranged above both ends of the lifting plate, and the bottom of both ends of the lifting plate is fixed to the lifting rod.

[0017] In a preferred embodiment, a rotary drive device is connected to the top of the first drive rod, and a lifting drive device is connected to the top of the second drive rod.

[0018] In a preferred embodiment, threaded grooves are provided on both sides of the mounting table. The mounting table is connected to the first opening and closing module by bolts. The drive rod assembly is threadedly connected to the mounting table. The second opening and closing module is fixed by a presser foot bolt. The drive rod assembly is driven by pneumatic pressure boost.

[0019] The technical effects achieved by the present invention are as follows:

[0020] The cooperation between the drive rod assembly and the opening and closing auxiliary assembly provided by the present invention can quickly replace the first opening and closing module, making it more convenient and fast to use;

[0021] The self-locking assembly provided by the present invention can lock the first opening and closing module and the second opening and closing module, enabling the product to be formed without continuously applying pressure to the press after mold closing, avoiding mold deformation, and unlocking and locking can be achieved by driving the lifting through the second drive rod during mold opening, with simple and fast operation;

[0022] The waste material cutting knife provided by the present invention rises and falls with the lifting link. During mold opening, it will first drive the waste material cutting knife to rise, and the self-locking assembly will be triggered only after the waste material cutting knife cuts the fracture of the product, enabling the automatic cutting of the waste material at the port during mold opening, which is more practical.

[0023] The connecting plate and the link group provided by the present invention can cooperate with the drive rod assembly driven by pneumatic pressure boost, enabling the mounting table to rise and fall under pneumatic pressure boost, thereby playing a role in controlling mold opening and closing through pneumatic pressure boost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the present invention;

[0025] Figure 2 is a schematic connection diagram of a part of the present invention;

[0026] Figure 3 is an exploded schematic diagram of a part of the present invention;

[0027] Figure 4 is a schematic diagram of the first sectional structure of a part of the present invention;

[0028] Figure 5It is a partial structural schematic diagram of the self-locking component of the present invention;

[0029] Figure 6 It is a first sectional structural schematic diagram of a part of the present invention;

[0030] Figure 7 It is a connection schematic diagram of the first locking block and the lifting link of the present invention;

[0031] Figure 8 It is a connection schematic diagram of the opening / closing assisting component and the first opening / closing module of the present invention.

[0032] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0033] 1. First mounting body; 2. Second mounting body; 3. Connecting column; 4. Driving rod assembly; 5. Opening / closing assisting component; 6. First opening / closing module; 7. Second opening / closing module; 8. Self-locking component; 41. First driving rod; 42. Second driving rod; 43. Extending rod; 44. First locking block; 45. Second locking block; 51. Connecting plate; 52. Link group; 53. Mounting table; 54. Sliding plate; 55. Insert block; 56. First elastic member; 61. First module; 62. Connecting insert; 63. Remnant cutting knife; 64. Lifting link; 71. Second module; 72. Lower die groove; 73. Locking slot; 81. Lifting plate; 82. Second elastic member; 83. Lifting rod; 83a. Inclined block; 84. Locking insertion rod; 84a. Inclined surface; 84b. Empty groove; 85. Sheath; 86. Third elastic member; 87. Permanent magnet; 88. Adsorbent. Detailed implementation manners

[0034] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention with reference to the drawings in the specification.

[0035] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0036] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present invention. The phrase "in a preferred implementation manner" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that excludes other embodiments.

[0037] Next, the present invention will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be locally enlarged not in accordance with the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0038] Embodiment 1

[0039] As Figures 1 to 7 , this is the first embodiment of the present invention. This embodiment provides a synchronous and rapid mold opening and closing mechanism for a hollow molding machine, which includes a first mounting body 1 and a second mounting body 2. The second mounting body 2 is located above the first mounting body 1, and a plurality of connecting columns 3 are installed between the first mounting body 1 and the second mounting body 2;

[0040] A mold opening and closing auxiliary component 5 is installed below the second mounting body 2. The mold opening and closing auxiliary component 5 includes a connecting plate 51, a connecting rod group 52, and a mounting table 53. The connecting plate 51 is installed below the second mounting body 2, the connecting rod group 52 is installed between the connecting plate 51 and the mounting table 53, and a first mold opening and closing module 6 that is easy to disassemble is installed below the mounting table 53. A second mold opening and closing module 7 is installed on the upper surface of the first mounting body 1 at a position corresponding to the first mold opening and closing module 6. A self-locking component 8 is arranged between the first mold opening and closing module 6 and the second mold opening and closing module 7;

[0041] The first mold opening and closing module 6 includes a first module 61, a connecting insert 62, a waste material cutting knife 63, and a lifting connecting rod 64. The connecting insert 62 is installed on the top of the first module 61, the waste material cutting knife 63 is arranged on one side surface of the first module 61, the lifting connecting rod 64 is located inside the first module 61, and the lifting connecting rod 64 is slidably connected with the first module 61 and is fixed to the waste material cutting knife 63;

[0042] A driving rod assembly 4 is arranged in the middle of the second mounting body 2. The driving rod assembly 4 includes a first driving rod 41 and a second driving rod 42. A second locking block 45 is fixed to the bottom of the first driving rod 41, and the second locking block 45 is rotatably connected with the mounting table 53. The second driving rod 42 is located inside the first driving rod 41 and is slidably connected with the first driving rod 41. The inner wall of the first driving rod 41 is recessed inward to form a convex structure, and the surface of the second driving rod 42 is recessed inward to form a recessed groove. Among them, the convex structure is located inside the recessed groove and can move along its extending direction. A stretching rod 43 is fixed to the bottom end of the second driving rod 42. The stretching rod 43 passes through the mounting table 53 and the first module 61, and a first locking block 44 is fixed to the bottom of the stretching rod 43. The first locking block 44 is located inside the lifting connecting rod 64.

[0043] As described above, during use, the opening and closing auxiliary component 5 and the first opening and closing module 6 are controlled by the driving rod assembly 4 to descend as a whole. After descending until the first opening and closing module 6 and the second opening and closing module 7 are completely closed, the self-locking component 8 is triggered. The self-locking component 8 locks the first opening and closing module 6 and the second opening and closing module 7. At this time, there is no need to continue outputting power to press down the first opening and closing module 6. Then, liquid plastic is injected into the first opening and closing module 6 and the second opening and closing module 7 in the closed mold by a hollow molding machine and blown onto the hollow mold cavities in the first opening and closing module 6 and the second opening and closing module 7. After a period of time, the product is shaped in the hollow mold cavity. The driving rod assembly 4 is controlled to drive the opening and closing auxiliary component 5 and the first opening and closing module 6 to rise. When rising, the excess material cutting knife 63 and the lifting connecting rod 64 will be driven to rise first, and the excess material at the product port is cut off by the excess material cutting knife 63. When the lifting connecting rod 64 rises to the top, the self-locking component 8 is triggered again to release the lock of the first opening and closing module 6 and the second opening and closing module 7, completing the mold opening.

[0044] In a preferred embodiment, please refer to Figure 8 , on both sides of the second locking block 45 inside the mounting table 53, there are sliding plates 54 slidably connected. At both ends on one side of the sliding plate 54, there are first elastic members 56. In the middle of one side of the sliding plate 54, there is a plug 55 fixed, and the plug 55 is aligned with the hollow part of the connecting insert piece 62.

[0045] In this embodiment, when installing the first opening and closing module 6, align the connecting insert piece 62 with the bottom of the mounting table 53. Then, by controlling the rotation of the first driving rod 41, the second locking block 45 can be driven to rotate. When the second locking block 45 rotates, it will squeeze the sliding plate 54 to slide. When the sliding plate 54 slides, it drives the plug 55 to slide. The plug 55 can be inserted into the hollow part of the connecting insert piece 62, playing a role in fixing the mounting table 53 and the connecting insert piece 62, and thus the first opening and closing module 6 can be quickly disassembled and assembled.

[0046] Secondly, please refer to Figure 7 again. A slot is opened at the central position of the lifting connecting rod 64. The shape of the slot is the same as that of the first locking block 44. Below the slot, there is a locking slot, and the locking slot is a circular hole.

[0047] As described above, when installing the first opening and closing module 6, after the opening and closing auxiliary component 5 and the first opening and closing module 6 are aligned, the second driving rod 42 is controlled to descend to the bottom. The extension rod 43 and the first locking block 44 pass through the mounting table 53 and the first module 61 and enter the inside of the lifting connecting rod 64. At this time, by controlling the first driving rod 41 to rotate a certain angle, the first locking block 44 can be stuck in the circular hole of the lifting connecting rod 64, thus playing a role in connecting the extension rod 43 and the lifting connecting rod 64.

[0048] Thirdly, please refer to Figure 3, the second opening and closing module 7 includes a second module 71 and a lower die groove 72. The second module 71 is fixed on the upper surface of the first mounting body 1, and the lower die grooves 72 are evenly arranged on the upper surface of the second module 71. The upper surface of the first module 61 is evenly provided with upper die grooves. After the first module 61 and the second module 71 are combined, the upper die grooves correspond to the lower die grooves 72, and the waste cutting knife 63 is located at the lower die grooves 72.

[0049] As described above, after the first opening and closing module 6 and the second opening and closing module 7 are closed, the upper die grooves and the second module 71 form a hollow cavity. Through a hollow molding machine, a hollow part can be formed in the hollow cavity, and the port part of the formed hollow part is located below the waste cutting knife 63. When the mold is opened, the waste cutting knife 63 will rise along with the lifting connecting rod 64 to cut off the excess material at the port, playing a role in cutting the waste at the port.

[0050] Further, please refer to Figure 4 and Figure 5 For example, it includes a lifting rod 83 and a locking plug rod 84. The lifting rod 83 is installed below both ends of the first module 61. The locking plug rod 84 is located at the bottom of the lifting rod 83. One end of the locking plug rod 84 is provided with an inclined surface 84a. A hollow groove 84b is arranged in the middle of the locking plug rod 84, and the inner wall of the hollow groove 84b on the side away from the inclined surface 84a is parallel to the inclined surface 84a. An inclined block 83a is arranged at the bottom of the lifting rod 83. The inclined block 83a is located in the hollow groove 84b. The other end of the locking plug rod 84 is slidably connected with a sleeve 85. A third elastic member 86 is arranged between the sleeve 85 and the locking plug rod 84. At the position corresponding to the locking plug rod 84 on the upper surface of the second module 71, a locking slot 73 is arranged, and the side of the inner wall of the locking slot 73 corresponding to the inclined surface 84a is provided with a protruding structure, and the cross-sectional shape of the protruding structure is set as a right trapezoid;

[0051] Further, the overall height of the sleeve 85 is higher than that of the locking plug rod 84.

[0052] In this embodiment, when the lifting rod 83 descends above the locking slot 73, the inclined surface 84a provided at one end of the locking plug 84 is squeezed at the entrance of the locking slot 73. Since the overall height of the sleeve 85 is higher than that of the locking plug 84, the sleeve 85 enters the locking slot 73 before the locking plug 84 contacts the locking slot 73. At this time, the locking plug 84 is squeezed by the slope on the locking slot 73 and can contract towards the sleeve 85, enabling the locking plug 84 to enter the interior of the locking slot 73. After the locking plug 84 enters the interior of the locking slot 73, the locking plug 84 pops out under the action of the third elastic member 86, fixing the locking plug 84 inside the locking slot 73. Thus, a self-locking function is achieved between the first opening and closing module 6 and the second opening and closing module 7. After the first opening and closing module 6 and the second opening and closing module 7 are closed, the closed state can be maintained without continued driving. When opening the mold, by lifting the lifting rod 83 upwards, during the upward movement of the lifting rod 83, since the inclined block 83a is in contact with the inclined surface 84a, when on the inclined block 83a, the inclined block 83a will squeeze the inclined surface on the empty slot 84b. As the inclined block 83a continues to rise, it can gradually push the inclined surface to move horizontally, thereby gradually contracting the locking plug 84 until the plug 84 completely disengages from the interior of the locking slot 73. Continuing to rise can lift the first opening and closing module 6 to complete the mold opening.

[0053] In a preferred embodiment, please refer to again Figure 4 , a permanent magnet 87 is provided on the inclined surface at the empty slot 84b of the locking plug 84, and an adsorbent 88 is provided at the inclined block 83a at the bottom end of the lifting rod 83. The permanent magnet 87 and the adsorbent 88 are adsorbed and connected.

[0054] In this embodiment, the locking plug 84 and the lifting rod 83 are adsorbed and fixed through the permanent magnet 87 and the adsorbent 88, ensuring that when the locking plug 84 is not in the locking slot 73, the locking plug 84 will not be deflected due to gravity and other factors, making it difficult to insert into the interior of the locking slot 73 when locking the first opening and closing module 6 and the second opening and closing module 7.

[0055] Secondly, please refer to together Figure 4 and Figure 6 , a lifting plate 81 is slidably connected inside the first module 61. The middle part of the lifting plate 81 is located at the sliding track of the lifting link 64. Second elastic members 82 are provided above both ends of the lifting plate 81, and the bottom ends of both ends of the lifting plate 81 are fixed to the lifting rod 83.

[0056] As described above, when the second driving rod 42 rises, the extending rod 43 and the first locking block 44 will drive the lifting connecting rod 64 to rise. When the lifting connecting rod 64 rises below the lifting plate 81 and continues to rise, it will lift the lifting plate 81. At this time, the lifting rod 83 is driven by the lifting plate 81 to rise a certain distance, thereby unlocking the lock between the first module 61 and the second module 71, and causing the first opening and closing module 6 and the self-locking component 8 to rise as a whole.

[0057] Secondly, a rotary driving device (not shown in the figure) is connected to the outer side of the upper end of the first driving rod 41, and a lifting driving device (not shown in the figure) is connected to the top of the second driving rod 42.

[0058] As described above, the rotary driving device is used to drive the entire driving rod assembly 4 to rotate, and the lifting driving device is used to drive the second driving rod 42 to lift, and is also used to control the opening and closing of the first opening and closing module 6 and the second opening and closing module 7. Specifically, the rotary driving device can be a driving device such as a motor or a motor, and it can drive the first driving rod 41 to rotate through a transmission method such as a gear or a belt. The lifting driving device can be a telescopic component such as a cylinder. Since both the rotary driving device and the lifting driving device are relatively mature devices in the prior art, that is, common knowledge, they are not shown in the figure.

[0059] Embodiment 2

[0060] This is the second embodiment of the present invention. This embodiment is based on Embodiment 1, and this embodiment provides a new energy balancer based on high-precision detection of current and voltage;

[0061] Threaded grooves are provided on both sides of the mounting table 53. The mounting table 53 is connected to the first opening and closing module 6 by bolts. The driving rod assembly 4 is threadedly connected to the mounting table 53. The second opening and closing module 7 is fixed by a presser foot bolt. The driving rod assembly 4 is driven by pneumatic supercharging;

[0062] In this embodiment, the driving rod assembly 4 provided drives the mounting table 53 to move up and down by means of pneumatic supercharging, and the provided connecting plate 51 and connecting rod group 52 can cooperate with the driving rod assembly 4 to provide a way for the mounting table 53 to move up and down by means of pneumatic supercharging.

[0063] The working principle of the present invention is as follows: When replacing the first opening and closing module 6, by controlling the rotation of the first driving rod 41 and causing the first locking block 44 and the second locking block 45 to rotate together. After the first locking block 44 rotates, by controlling the lifting of the second driving rod 42, the first locking block 44 can be withdrawn from the first opening and closing module 6, and after the second locking block 45 rotates, the insertion block 55 can be retracted. At this time, the entire first opening and closing module 6 is no longer fixed and can be removed. After removing the corresponding second opening and closing module 7, the required first opening and closing module 6 and second opening and closing module 7 can be replaced. When installing the first opening and closing module 6, align the connecting insert 62 with the lower part of the installation table 53, and insert the second driving rod 42 into the inside of the sliding plate 54. Then rotate the first driving rod 41 to drive the first locking block 44 and the second locking block 45 to rotate together, so that the first locking block 44 is fixed to the lifting connecting rod 64, and the insertion block 55 is inserted into the hollow slot of the connecting insert 62 to complete the fixation of the first opening and closing module 6. Then install the corresponding second opening and closing module 7 below the first opening and closing module 6 to complete the replacement of the first opening and closing module 6;

[0064] When performing mold closing, control the first opening and closing module 6 to descend through the second driving rod 42. After the first opening and closing module 6 and the second opening and closing module 7 are closed, the self-locking component 8 installed below the first opening and closing module 6 is clamped into the second opening and closing module 7 to complete the locking of the first opening and closing module 6 and the second opening and closing module 7. After the product is shaped, control the second driving rod 42 to lift, so that the lifting connecting rod 64 and the waste material cutting knife 63 are lifted together. During the lifting process, the waste material cutting knife 63 can cut off the waste material located at the product port, and when the lifting connecting rod 64 is lifted to the highest position, it squeezes the lifting plate 81, thereby triggering the self-locking component 8 and making the locking between the first opening and closing module 6 and the second opening and closing module 7 released.

[0065] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention are implemented according to the conventional means in the art without special explanation and limitation.

Claims

1. A synchronous and rapid mold opening and closing mechanism for a hollow molding machine, characterized in that: It includes a first mounting body (1) and a second mounting body (2), the second mounting body (2) is located above the first mounting body (1), and a plurality of connecting columns (3) are installed between the first mounting body (1) and the second mounting body (2); A opening and closing assisting component (5) is installed below the second mounting body (2), the opening and closing assisting component (5) includes a connecting plate (51), a connecting rod group (52) and a mounting table (53), the connecting plate (51) is installed below the second mounting body (2), the connecting rod group (52) is installed between the connecting plate (51) and the mounting table (53), a first opening and closing module (6) which is easy to disassemble is installed below the mounting table (53), and a second opening and closing module (7) is installed on the upper surface of the first mounting body (1) at a position corresponding to the first opening and closing module (6); A driving rod component (4) is arranged in the middle of the second mounting body (2); A self-locking component (8) is arranged between the first opening and closing module (6) and the second opening and closing module (7); The first opening and closing module (6) includes a first module (61), a connecting insert piece (62), a waste material cutting knife (63) and a lifting connecting rod (64), the connecting insert piece (62) is installed on the top of the first module (61), the waste material cutting knife (63) is arranged on one side surface of the first module (61), the lifting connecting rod (64) is located inside the first module (61), and the lifting connecting rod (64) is slidably connected with the first module (61), and the lifting connecting rod (64) is fixed to the waste material cutting knife (63) The second opening and closing module (7) includes a second module (71) and a lower die groove (72), the second module (71) is fixed on the upper surface of the first mounting body (1), the lower die grooves (72) are uniformly arranged on the upper surface of the second module (71), upper die grooves are uniformly arranged on the upper surface of the first module (61), when the first module (61) and the second module (71) are combined, the upper die grooves correspond to the lower die grooves (72), and the waste material cutting knife (63) is located at the lower die grooves (72); The self-locking component (8) includes a lifting rod (83) and a locking insertion rod (84), the lifting rod (83) is installed below both ends of the first module (61), the locking insertion rod (84) is located at the bottom of the lifting rod (83), one end of the locking insertion rod (84) is provided with an inclined surface (84a), a hollow groove (84b) is arranged in the middle of the locking insertion rod (84), a slanting block (83a) is arranged at the bottom of the lifting rod (83), the slanting block (83a) is located in the hollow groove (84b), the other end of the locking insertion rod (84) is slidably connected with a sleeve (85), a third elastic member (86) is arranged between the sleeve (85) and the locking insertion rod (84), and a locking slot (73) is arranged on the upper surface of the second module (71) at a position corresponding to the locking insertion rod (84).

2. The synchronous fast mold opening and closing mechanism of a hollow molding machine according to claim 1, characterized in that: The driving rod assembly (4) includes a first driving rod (41) and a second driving rod (42). A second locking block (45) is fixed to the bottom of the first driving rod (41). The second locking block (45) is rotatably connected to the mounting table (53). The second driving rod (42) is located inside the first driving rod (41), and the second driving rod (42) is slidably connected to the first driving rod (41). A telescopic rod (43) is fixed to the bottom end of the second driving rod (42). The telescopic rod (43) passes through the mounting table (53) and the first module (61). A first locking block (44) is fixed to the bottom of the telescopic rod (43). The first locking block (44) is located inside the lifting link (64). A slot is provided at the central position of the lifting link (64). The shape of the slot is the same as that of the first locking block (44). A locking groove is provided below the slot. The locking groove is a circular hole.

3. The synchronous and rapid mold opening and closing mechanism of a hollow molding machine according to claim 2, characterized in that: Sliding plates (54) are slidably connected to both sides of the second locking block (45) inside the mounting table (53). First elastic members (56) are provided at both ends of one side of the sliding plates (54). An insertion block (55) is fixed to the middle of one side of the sliding plates (54). The insertion block (55) is aligned with the hollow part of the connecting insert piece (62).

4. The synchronous and rapid mold opening and closing mechanism of a hollow molding machine according to claim 1, characterized in that: A permanent magnet (87) is provided on the inclined surface at the empty groove (84b) of the locking insertion rod (84). An adsorbent (88) is provided at the inclined block (83a) at the bottom end of the lifting rod (83). The permanent magnet (87) is adsorbed and connected to the adsorbent (88).

5. The synchronous and rapid mold opening and closing mechanism of a hollow molding machine according to claim 1, characterized in that: A lifting plate (81) is slidably connected inside the first module (61). The middle part of the lifting plate (81) is located at the sliding track of the lifting link (64). Second elastic members (82) are provided above both ends of the lifting plate (81). The bottom of both ends of the lifting plate (81) is fixed to the lifting rod (83).

6. The synchronous and rapid mold opening and closing mechanism of a hollow molding machine according to claim 2, characterized in that: The top of the first driving rod (41) is connected to a rotary driving device, and the top of the second driving rod (42) is connected to a lifting driving device.

7. The synchronous fast mold opening and closing mechanism of a hollow molding machine according to claim 1, characterized in that: Threaded grooves are provided on both sides of the mounting table (53). The mounting table (53) is connected to the first opening and closing module (6) by bolts. The driving rod assembly (4) is threadedly connected to the mounting table (53). The second opening and closing module (7) is fixed by a presser foot bolt. The driving rod assembly (4) is driven by pneumatic supercharging.

Images