Hot air circulation type forming device for blister box production

Abstract

The invention belongs to the technical field of blister box production, and discloses a hot air circulation type forming device for blister box production, which comprises a working box, a control box fixedly arranged on the working box, a softening mechanism positioned in the working box, a mold arranged at the bottom of the softening mechanism, and a fixing mechanism, the fixing mechanism is located in the working box and used for fixing, disassembling and assembling the mold. The demolding mechanism is located on one side of the mold and used for demolding the forming box in the mold; and the fixing mechanism comprises a clamping plate, through cooperation of the clamping plate, a driving disc, an ejection disc, a spring and other structures, rapid replacement of the mold is facilitated and achieved, and the problems that in the forming process of an existing hot air flow circulation type forming device for blister box production, rapid replacement of the mold is inconvenient to achieve, and production efficiency is high are solved. And forming of different plastic uptake boxes is difficult to adapt.

Description

Technical Field

[0001] The invention belongs to the technical field of blister box production, in particular to a hot air flow circulation type forming device for blister box production. Background Art

[0002] Blister boxes are widely used in food, medicine, electronics and other industries as plastic packaging containers. Their production process mainly relies on blister forming technology. The blister forming process heats the plastic sheet to soften it, and then uses vacuum adsorption or air pressure forming to fit the sheet to the mold surface, and finally cools and shapes it to obtain the desired shape of the blister box. In this process, the hot air circulation forming device is widely used in the production of blister boxes as an efficient and energy-saving equipment. The device heats the plastic sheet evenly through the circulating hot air flow to ensure that the sheet has good plasticity during the forming process, thereby improving product quality and production efficiency.

[0003] However, in the actual use of the existing hot air circulation forming device for blister box production, there are still some problems that need to be solved urgently, among which the problem of inconvenient mold replacement is particularly prominent. The mold is the core component in the blister molding process, and its shape and structure directly determine the final form of the blister box. In actual production, in order to meet the needs of different customers, it is often necessary to frequently replace the mold to produce blister boxes of different shapes and sizes. However, the existing hot air circulation forming device mostly relies on manual operation for mold replacement and lacks automation support. Bolts or clamps are usually used to fix the mold on the molding platform. When replacing the mold, multiple fixings need to be disassembled, and the operation is cumbersome and time-consuming. This not only reduces production efficiency, but also increases the labor intensity of operators. It is difficult to adapt to the requirements of modern production lines for high efficiency and high precision, and it is not convenient to achieve rapid replacement of molds.

[0004] Therefore, a hot air circulation type forming device for producing blister boxes is proposed to solve the problems raised by the background technology. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a hot air circulation type forming device for producing blister boxes.

[0006] To achieve the above object, the present invention provides the following technical solution: a hot air circulation forming device for producing blister boxes, comprising a working box, a control box fixedly arranged on the working box, a softening mechanism located inside the working box, a mold arranged at the bottom of the softening mechanism, and further comprising: A fixing mechanism, which is located inside the working box and is used to fix and disassemble the mold; A demoulding mechanism, which is located at one side of the mold and is used to demould the molding box inside the mold; Among them, the fixing mechanism includes a clamping plate, a fixing box fixedly arranged inside the working box, a driving disk rotatably arranged inside the fixing box, and an ejection disk clamped on the top of the driving disk, a through groove is opened on the side wall of the fixing box, a limiting groove is opened on the top of the fixing box, the clamping plates are symmetrically arranged inside the fixing box, two sides of the clamping plates close to each other are fixedly connected with connecting blocks, limiting columns are fixedly arranged on the tops of the two connecting blocks, the connecting blocks are slidably connected to the through groove, and the limiting columns are slidably clamped to the limiting groove.

[0007] Preferably, the surface of the driving disk is provided with a plurality of arc grooves distributed in a circular array, a driving shaft rotatably connected to the fixed box and the bottom of the working box is fixedly arranged at the center of the driving disk, and a control motor fixedly connected to the bottom of the working box is fixedly arranged at the bottom of the driving shaft.

[0008] Preferably, the ejection disk is of irregular shape, and a plurality of connecting posts distributed in a ring array are fixedly provided on one side of the protruding bottom of the ejection disk, and the connecting posts are engaged with the arc grooves.

[0009] Preferably, a circular hole is formed on the connecting block, a spring is sleeved inside the circular hole, and the spring is in a circular ring shape.

[0010] Preferably, the softening mechanism includes a softening box, a steam box fixedly mounted on the side of the working box, a transmission pipe fixedly mounted on the softening box and passing through the steam box, a circulation pipe fixedly mounted on the side of the softening box and connected to the side of the steam box, and a discharge pipe fixedly mounted on the side of the softening box away from the circulation pipe with its bottom end facing the mold, and a heat-conducting fan fixedly mounted inside the transmission pipe.

[0011] Preferably, the demolding mechanism includes a sponge block arranged at the top position of one side of the mold, a first electric push rod fixedly installed on the top of the sponge block, a storage box fixedly installed on the side of the bottom of the working box away from the mold, a mounting block fixedly installed on the top of the first electric push rod, a rectangular block fixedly installed on the top of the mounting block, and an electric cylinder arranged on the side of the rectangular block and fixedly connected to the side wall of the working box.

[0012] Preferably, a limiting component for clamping the sponge block is provided on the side of the working box, and a pulling component for pulling the lubricant inside the sponge block for extrusion is provided on one side of the mounting block.

[0013] Preferably, the limiting assembly includes a clamping block slidably arranged on the side of the sponge block away from the mold, a connecting rod fixedly arranged on the top of the clamping block, a moving block fixedly installed on the top of the connecting rod, and a second electric push rod fixedly arranged on the side of the moving block and fixedly connected to the mounting block. The cross-section of the clamping block is irregular in shape and gradually shrinks on the side away from the sponge block.

[0014] Preferably, the pulling assembly includes a pull rope fixedly arranged on a side of the clamping block away from the sponge block, a connecting frame with the top and bottom ends respectively fixedly arranged on the moving block and the clamping block, a transmission roller fixedly installed on the connecting frame, and a winding roller rotatably arranged on a side of the connecting frame away from the transmission roller.

[0015] Preferably, an adjusting motor is fixedly arranged at the center of the winding roller, the adjusting motor is fixedly connected to the rectangular block, and the pull rope is fixedly wound on the winding roller through a transmission roller.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention facilitates the rapid replacement of molds by arranging the coordination of structures such as the clamping plate, the driving plate, the ejecting plate and the spring. In order to adapt to the molding of blister boxes of different sizes, the mold can be quickly replaced through the fixing mechanism. During replacement, the motor is controlled to drive the driving plate to rotate, thereby driving the ejecting plate to rotate. The irregular shape of the ejecting plate causes the protruding end to squeeze the connecting block, so that the clamping plate is separated, which is convenient for taking out the mold. At this time, the spring is stretched. After replacing the new mold, the driving plate drives the ejecting plate to rotate to the recessed position close to the connecting block. The spring is reset, driving the clamping plate to close, and quickly clamping the new mold to realize rapid replacement of the mold, thereby solving the problem that the existing hot air flow circulation molding device for blister box production is not convenient for rapid replacement of the mold during the molding process and is difficult to adapt to the molding of different blister boxes.

[0017] The present invention facilitates the realization of hot air circulation heating of materials by setting up the coordination of structures such as a softening box, a steam box, a transmission pipe and a circulation pipe. The softening mechanism is used to soften the plate before forming. The steam box generates steam by heating, and the steam enters the softening box through the heat-conducting fan in the transmission pipe to heat and soften the material in the box. The high-temperature hot air melts the material quickly, and the melted material enters the mold through the feeding pipe, which is convenient for subsequent extrusion molding. After use, the circulation pipe is opened to recover the waste heat in the softening box to the steam box to realize heat recycling.

[0018] The present invention facilitates rapid demolding by setting up the coordination of structures such as sponge blocks, limit components and pulling components. The demolding mechanism is used to quickly demold objects formed in the mold. Before use, the electric cylinder pushes the rectangular block close to the mold, driving the mounting block and the sponge block to move to just above the mold. The first electric push rod drives the sponge block close to the storage box to soak the demolding agent. The second electric push rod pushes the clamping block to limit and clamp the sponge block, and the adjustment motor drives the connecting frame to rotate. Through the coordination of the pull rope and the transmission roller, the sponge block moves toward the clamping block. The irregular shape of the clamping block squeezes the sponge block and squeezes the demolding agent into the mold. Then the first electric push rod drives the sponge block into the mold, absorbs excess agent and evenly smears the inner wall to facilitate subsequent demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention; Figure 3 for Figure 2 A schematic diagram of the enlarged local structure at center A; Figure 4 It is an exploded view of the fixing mechanism of the present invention; Figure 5 It is a schematic diagram of the structural matching relationship between the limiting component and the pulling component of the present invention; Figure 6 for Figure 5 A magnified schematic diagram of the local structure at B in the middle; Figure 7 It is a schematic diagram of the three-dimensional structure of the demoulding mechanism of the present invention.

[0020] In the figure: 1, working box; 11, control box; 2, softening mechanism; 21, softening box; 22, steam box; 23, transmission pipe; 24, circulation pipe; 25, feeding pipe; 3, mold; 4, fixing mechanism; 41, clamping plate; 411, connecting block; 412, limiting column; 413, round hole; 42, fixing box; 421, through groove; 422, limiting groove; 43, driving plate; 431, arc groove; 432, control motor; 44, ejector plate; 4 41. Connecting column; 45. Spring; 5. Demolding mechanism; 51. Sponge block; 511. First electric push rod; 52. Storage box; 53. Mounting block; 54. Rectangular block; 55. Electric cylinder; 56. Limiting assembly; 561. Clamping block; 562. Connecting rod; 563. Moving block; 564. Second electric push rod; 57. Pulling assembly; 571. Pull rope; 572. Winding roller; 573. Transmission roller; 574. Connecting frame; 575. Adjusting motor. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] like Figures 1 to 7 As shown, the present invention provides a hot air circulation forming device for producing blister boxes, comprising a working box 1, a control box 11 fixedly arranged on the working box 1, a softening mechanism 2 located inside the working box 1, a mold 3 arranged at the bottom of the softening mechanism 2, and further comprising: A fixing mechanism 4, which is located inside the working box 1 and is used to fix and disassemble the mold 3; A demoulding mechanism 5, which is located at one side of the mold 3 and is used to demould the molding box inside the mold 3; The fixing mechanism 4 includes a clamping plate 41, a fixing box 42 fixedly arranged inside the working box 1, a driving disk 43 rotatably arranged inside the fixing box 42, and an ejecting disk 44 clamped on the top of the driving disk 43. A through groove 421 is provided on the side wall of the fixing box 42, and a limiting groove 422 is provided on the top of the fixing box 42. The clamping plates 41 are symmetrically arranged inside the fixing box 42. The two clamping plates 41 are fixedly connected with a connecting block 411 on one side close to each other. A limiting column 412 is fixedly arranged on the top of the two connecting blocks 411. The connecting block 411 is slidably connected to the through groove 421, and the limiting column 412 is slidably connected to the limiting groove 422. The surface of the driving disk 43 is provided with a plurality of arc grooves 431 distributed in a ring array, a driving shaft rotatably connected to the fixed box 42 and the bottom of the working box 1 is fixedly arranged at the center of the driving disk 43, a control motor 432 fixedly connected to the bottom of the working box 1 is fixedly arranged at the bottom of the driving shaft, the ejection disk 44 is irregularly shaped, and a plurality of connecting columns 441 distributed in a ring array are fixedly arranged on one side of the protruding bottom of the ejection disk 44, the connecting columns 441 are clamped with the arc grooves 431, a circular hole 413 is provided on the connecting block 411, a spring 45 is sleeved inside the circular hole 413, and the spring 45 is in a circular ring shape.

[0023] The above scheme is adopted: when in use, the material is first softened by passing it through the softening mechanism 2, and the softened material falls into the bottom mold 3, is extruded and formed, and then is quickly demolded by using the demolding mechanism 5. In the process of molding, in order to adapt to the extrusion of blister boxes of different sizes, the mold 3 can be quickly installed and replaced by using the fixing mechanism 4. When replacement is needed, the driving disk 43 can be driven to rotate by using the control motor 432. During the rotation of the driving disk 43, the connecting column 441 that is clamped in the arc groove 431 will rotate synchronously, thereby driving the top ejection disk 44 to rotate. Since the ejection disk 44 is an irregular shape, when the mold 3 needs to be taken out, its protruding side can be rotated to the direction close to the connecting block 411. At this time, the protruding end of the ejection disk 44 will squeeze the connecting block 411 to make it slide along the through groove 421, thereby driving the clamping plates 41 on both sides to move away from each other, making it easier to take out the mold 3 clamped in the center. At this time, the spring 45 is in a stretched state under the tension. When the mold 3 is replaced, the new mold 3 can be placed on the top of the fixing box 42, and the driving disk 43 is used to drive the ejection disk 44 to rotate so that its recessed part is close to one end of the connecting block 411. At this time, the squeezing force on one side of the connecting block 411 disappears, and the spring 45 is reset to drive the connected connecting blocks 411 to move closer to each other, so that the top limiting column 412 slides in the limiting groove 422, driving the clamping plates 41 to reset and move closer to each other to quickly clamp and fix the mold 3 at the center, thereby realizing rapid replacement of the mold 3.

[0024] like Figure 2 As shown, the softening mechanism 2 includes a softening box 21, a steam box 22 fixedly mounted on the side of the working box 1, a transmission pipe 23 fixedly mounted on the softening box 21 and passing through the steam box 22, a circulation pipe 24 fixedly mounted on the side of the softening box 21 and connected to the side of the steam box 22, and a discharge pipe 25 fixedly mounted on the side of the softening box 21 away from the circulation pipe 24 and with its bottom end facing the mold 3, and a heat conduction fan is fixedly mounted inside the transmission pipe 23.

[0025] The above scheme is adopted: the softening of the plate before forming is realized by the softening mechanism 2, the steam generated by the heating inside the steam box 22 enters the softening box 21 through the heat-conducting fan inside the transmission pipe 23, and the material inside the softening box 21 is heated and softened. Since the hot air temperature is relatively high, rapid melting can be achieved. After melting, the discharge pipe 25 is opened to allow the material to be discharged along the bottom of the discharge pipe 25 into the mold 3, which is convenient for subsequent extrusion molding. After use, the circulation pipe 24 is opened again, so that the heat inside the softening box 21 enters the steam box 22 from a small amount for collection for subsequent use, thereby realizing heat circulation.

[0026] like Figure 7As shown, the demoulding mechanism 5 includes a sponge block 51 arranged at the top position of one side of the mold 3, a first electric push rod 511 fixedly installed on the top of the sponge block 51, a storage box 52 fixedly arranged on the side of the bottom of the working box 1 away from the mold 3, a mounting block 53 fixedly installed on the top of the first electric push rod 511, a rectangular block 54 fixedly arranged on the top of the mounting block 53, and an electric cylinder 55 arranged on the side of the rectangular block 54 and fixedly connected to the side wall of the working box 1, a limiting component 56 for clamping the sponge block 51 is arranged on the side of the working box 1, and a pulling component 57 for pulling the lubricant inside the sponge block 51 for extrusion is arranged on one side of the mounting block 53; The limiting assembly 56 includes a clamping block 561 slidably arranged on the side of the sponge block 51 away from the mold 3, a connecting rod 562 fixedly arranged on the top of the clamping block 561, a moving block 563 fixedly installed on the top of the connecting rod 562, and a second electric push rod 564 fixedly arranged on the side of the moving block 563 and fixedly connected to the mounting block 53. The cross section of the clamping block 561 presents an irregular shape and gradually shrinks on the side away from the sponge block 51; The pulling assembly 57 includes a pull rope 571 fixedly arranged on the side of the clamping block 561 away from the sponge block 51, a connecting frame 574 whose top and bottom ends are respectively fixedly arranged on the moving block 563 and the clamping block 561, a transmission roller 573 fixedly installed on the connecting frame 574, and a winding roller 572 rotatably arranged on the side of the connecting frame 574 away from the transmission roller 573, an adjusting motor 575 is fixedly arranged at the center of the winding roller 572, the adjusting motor 575 is fixedly connected to the rectangular block 54, and the pull rope 571 is fixedly wound on the winding roller 572 through the transmission roller 573.

[0027] The above scheme is adopted: the demoulding mechanism 5 is used to quickly demould the object formed in the mold 3. Before the mold 3 is used, the electric cylinder 55 pushes the rectangular block 54 to move toward the mold 3, driving the mounting block 53 and the sponge block 51 to move to the top of the mold 3, and then the limiting component 56 and the pulling component 57 work together to inject the demoulding agent into the mold 3. Specifically, the first electric push rod 511 drives the sponge block 51 to approach the storage box 52. The storage box 52 contains the demoulding agent for soaking the sponge block 51, and then the second electric push rod 564 pushes the clamping block 56 1 is moved close to the sponge block 51 to limit and clamp it. At this time, the adjusting motor 575 drives the connecting frame 574 to rotate, so that the pull rope 571 is guided and rolled up by the transmission roller 573, and the sponge block 51 is pulled to move toward the clamping block 561. Due to the irregular shape of the clamping block 561, the sponge block 51 is squeezed during the movement, and the demoulding agent inside it is squeezed out and injected into the mold 3. Finally, the first electric push rod 511 drives the sponge block 51 to enter the mold 3, absorb the excess agent and evenly smear it on the inner wall of the mold 3, thereby ensuring that the subsequent demoulding process is more convenient and efficient.

[0028] The working principle and use process of the present invention are as follows: when using the device, first select the corresponding mold 3 according to the shape of the object to be formed, and realize the rapid replacement and installation of the mold through the fixing mechanism 4. After the mold is selected, put the raw material into the softening box 21, and use the hot air generated by the steam box 22 to heat and soften the material. The softened material is transported to the inside of the mold 3 through the discharge pipe 25, and then extruded and formed by external force. Before the material enters the mold 3, the electric cylinder 55 pushes the rectangular block 54 to approach the mold 3, driving the mounting block 53 and the sponge block 51 to move to the top of the mold 3, and then the limiting component 56 and the pulling component 57 work together to inject the demolding agent into the mold 3, and then the first electric push rod 511 drives the sponge block 51 to descend, absorb the agent and evenly apply it on the inner wall of the mold 3 to ensure that the subsequent demolding process proceeds smoothly.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hot air circulation forming device for producing blister boxes, comprising a working box (1), a control box (11) fixedly arranged on the working box (1), a softening mechanism (2) located inside the working box (1), and a mold (3) arranged at the bottom of the softening mechanism (2), characterized in that: Also includes: A fixing mechanism (4), the fixing mechanism (4) being located inside the working box (1) and being used to fix and assemble the mold (3); A demoulding mechanism (5), the demoulding mechanism (5) being located on one side of the mold (3) and being used to demould the molding box inside the mold (3); The fixing mechanism (4) comprises a clamping plate (41), a fixing box (42) fixedly arranged inside the working box (1), a driving disk (43) rotatably arranged inside the fixing box (42), and an ejecting disk (44) clamped on the top of the driving disk (43); a through slot (421) is provided on the side wall of the fixing box (42); a limiting slot (422) is provided on the top of the fixing box (42); the clamping plates (41) are symmetrically arranged inside the fixing box (42); two sides of the clamping plates (41) close to each other are fixedly connected with connecting blocks (411); limiting columns (412) are fixedly arranged on the tops of the two connecting blocks (411); the connecting blocks (411) are slidably connected to the through slot (421); and the limiting columns (412) are slidably clamped to the limiting slot (422).

2. The hot air circulation forming device for producing blister boxes according to claim 1, characterized in that: The surface of the driving disk (43) is provided with a plurality of arc-shaped grooves (431) distributed in a ring array, a driving shaft rotatably connected to the fixing box (42) and the bottom of the working box (1) is fixedly arranged at the center of the driving disk (43), and a control motor (432) fixedly connected to the bottom of the working box (1) is fixedly arranged at the bottom of the driving shaft.

3. The hot air circulation forming device for producing blister boxes according to claim 2, characterized in that: The ejection disk (44) presents an irregular shape, and a plurality of connection columns (441) distributed in a ring array are fixedly provided on one side of the bottom protrusion of the ejection disk (44), and the connection columns (441) are clamped with the arc-shaped grooves (431).

4. The hot air circulation forming device for producing blister boxes according to claim 1, characterized in that: The connecting block (411) is provided with a circular hole (413), and a spring (45) is sleeved inside the circular hole (413), wherein the spring (45) is in a circular ring shape.

5. The hot air circulation forming device for producing blister boxes according to claim 1, characterized in that: The softening mechanism (2) comprises a softening box (21), a steam box (22) fixedly mounted on a side of the working box (1), a transmission pipe (23) fixedly mounted on the softening box (21) and penetrating the steam box (22), a circulation pipe (24) fixedly mounted on a side of the softening box (21) and connected to a side of the steam box (22), and a discharge pipe (25) fixedly mounted on a side of the softening box (21) away from the circulation pipe (24) and with its bottom end facing the mold (3), and a heat conduction fan fixedly mounted inside the transmission pipe (23).

6. The hot air circulation forming device for producing blister boxes according to claim 1, characterized in that: The demoulding mechanism (5) comprises a sponge block (51) arranged at the top position of one side of the mold (3), a first electric push rod (511) fixedly mounted on the top of the sponge block (51), a storage box (52) fixedly mounted on the bottom of the working box (1) on a side away from the mold (3), a mounting block (53) fixedly mounted on the top of the first electric push rod (511), a rectangular block (54) fixedly mounted on the top of the mounting block (53), and an electric cylinder (55) arranged on the side of the rectangular block (54) and fixedly connected to the side wall of the working box (1).

7. The hot air circulation forming device for producing blister boxes according to claim 6, characterized in that: A limiting assembly (56) for clamping the sponge block (51) is provided on the side of the working box (1), and a pulling assembly (57) for pulling the lubricant inside the sponge block (51) for extrusion is provided on one side of the mounting block (53).

8. The hot air circulation forming device for producing blister boxes according to claim 7, characterized in that: The limiting assembly (56) comprises a clamping block (561) slidably arranged on a side of the sponge block (51) away from the mold (3), a connecting rod (562) fixedly arranged on the top of the clamping block (561), a moving block (563) fixedly mounted on the top of the connecting rod (562), and a second electric push rod (564) fixedly arranged on a side of the moving block (563) and fixedly connected to the mounting block (53); the cross-section of the clamping block (561) presents an irregular shape and gradually decreases on the side away from the sponge block (51).

9. The hot air circulation forming device for producing blister boxes according to claim 8, characterized in that: The pulling assembly (57) comprises a pull rope (571) fixedly arranged on a side of the clamping block (561) away from the sponge block (51), a connecting frame (574) whose top and bottom ends are respectively fixedly arranged on the moving block (563) and the clamping block (561), a transmission roller (573) fixedly mounted on the connecting frame (574), and a winding roller (572) rotatably arranged on a side of the connecting frame (574) away from the transmission roller (573).

10. The hot air circulation forming device for producing blister boxes according to claim 9, characterized in that: An adjusting motor (575) is fixedly arranged at the center of the winding roller (572), the adjusting motor (575) is fixedly connected to the rectangular block (54), and the pull rope (571) is fixedly wound on the winding roller (572) through a transmission roller (573).

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