Lifting structure of multi-station plastic thermal forming machine

Abstract

The lifting structure of the multi-station plastic thermal forming machine comprises a machine frame, a fixing frame, an upper installation plate, a lower installation plate and a cross beam, the fixing frame is fixed on the machine frame, the upper installation plate and the lower installation plate are both connected to the fixing frame in a sliding mode, a mold is connected between the upper installation plate and the lower installation plate, and the cross beam is connected with the upper installation plate and the lower installation plate in a sliding mode. The cross beam penetrates between the upper mounting plate and the lower mounting plate, a first adjusting mechanism used for driving the cross beam to move in the height direction of the rack is arranged on the rack, a heating mechanism is arranged on the rack, and a second adjusting mechanism used for driving the heating mechanism to move in the height direction of the rack is arranged on the rack. Therefore, a heightening column and a placing plate are omitted, the production cost of the mold is reduced, and the size of the mold is smaller.

Description

Technical Field

[0001] The utility model relates to the field of plastic thermoforming, in particular to a lifting structure of a multi-station plastic thermoforming machine. Background Art

[0002] At present, a Chinese patent with authorization announcement number CN219903049U discloses a new type of hot pressing molding machine, which belongs to the field of hot pressing molding machines and includes a hot pressing molding machine body, and an air blowing cleaning mechanism is provided to cooperate with the use of the hot pressing molding machine body.

[0003] After the product is hot-pressed by the hot-pressing forming machine body, the driving motor will drive the output end to rotate the screw through the rotating rod, so that the movable plate moves toward the front end in the frame through the threaded hole and the limit sliding hole along the screw and the limit sliding rod, and drives the L-shaped plate installed on the top surface to move forward and gradually enter between the upper and lower molds of the hot-pressing forming machine body. At this time, the air compressor will input compressed air into the air pipe installed in the installation port through the air supply pipe, and the compressed air will be blown onto the lower mold through the air nozzle installed on the bottom of the air pipe, so as to blow and clean the residue on the lower mold of the hot-pressing forming machine body, thereby ensuring the quality of the products formed later, and having the function of automatically cleaning the residue.

[0004] like Figure 1 As shown, the existing mold for producing plastic lunch boxes includes an upper mold 2 and a lower mold 3, wherein the upper mold 2 includes an upper fixed plate 21, a fixed frame 22, a stretching plate 23, a stretching column 24, a plunger 25, an air chamber cover plate 26, a surrounding edge 27, and a pressing frame 28. The lower mold 3 includes a push plate 31, a cavity plate 32, a water plate 33, a lower fixed plate 34, a heightening column 35, and a placement plate 36. In order to match the size of the existing hot pressing forming machine, the heightening column and the placement plate of the lower mold must have sufficient height to be installed on the existing hot pressing forming machine so that the plastic film can be located in a suitable position between the upper mold and the lower mold. Therefore, the overall thickness of the lower mold is thicker, the production cost of the mold is higher, and the mold volume is larger. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a lifting structure of a multi-station plastic thermoforming machine, so as to reduce the overall thickness of the mold and reduce the production cost of the mold.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a lifting structure of a multi-station plastic thermoforming machine, including a frame, a fixed frame, an upper mounting plate, a lower mounting plate, and a crossbeam, the fixed frame is fixed on the frame, the upper mounting plate and the lower mounting plate are both slidably connected to the fixed frame, a mold is connected between the upper mounting plate and the lower mounting plate, the crossbeam passes through the upper mounting plate and the lower mounting plate, the frame is provided with a first adjusting mechanism for driving the crossbeam to move along the height direction of the frame, the frame is provided with a heating mechanism, and the frame is provided with a second adjusting mechanism for driving the heating mechanism to move along the height direction of the frame.

[0007] To implement the above technical solution, the plastic film is moved along the length direction of the beam and passes through between the upper mold and the lower mold, the upper mold and the lower mold are installed between the upper mounting plate and the lower mounting plate, and the beam is driven to move along the height direction of the frame through the first adjustment structure, so that the beam is close to the lower mounting plate, thereby eliminating the heightening column and the placement plate, so as to achieve the purpose of reducing the overall thickness of the mold and the production cost of the mold; the heating mechanism is moved synchronously with the beam through the second adjustment mechanism, so that the heating mechanism softens the plastic film.

[0008] As a preferred solution of the utility model, the first adjusting mechanism includes a first motor, a first sliding rod, a first screw, and a first connecting frame. The first connecting frame is fixedly connected to the crossbeam, the first motor is fixed to the frame, the first sliding rod is slidably connected to the frame and fixedly connected to the first connecting frame, the first screw is rotatably connected to the frame and threadedly connected to the first connecting frame, the first screw is driven to rotate by the first motor, the first screw and the first sliding rod are arranged in parallel, and the axial direction of the first screw is arranged along the height direction of the frame.

[0009] To implement the above technical solution, the first motor is started, the first screw is rotated, and the first connecting frame can drive the crossbeam to move along the axial direction of the first slide rod through the conduction effect of the thread, so that the position of the crossbeam can be smoothly adjusted, and the operation is simple.

[0010] As a preferred solution of the utility model, a first worm is connected to the first power shaft of the first motor, the first worm is meshed with a first worm wheel, the first worm wheel is rotatably connected to the frame and fixedly connected to the first screw, and the first worm wheel is coaxially arranged with the first screw.

[0011] To implement the above technical solution, the first motor is started, the first power shaft drives the first worm to rotate, the first worm drives the first worm wheel to rotate, and the first worm wheel drives the first screw to rotate. Due to the self-locking property between the worm wheel and the worm, the placement of the beam is more stable and the movement of the beam is smoother.

[0012] As a preferred solution of the utility model, first adjustment mechanisms are provided at both ends of the frame.

[0013] By implementing the above technical solution, the crossbeam is less likely to deviate during movement and moves more smoothly.

[0014] As a preferred solution of the utility model, a slide rail is fixedly connected to the frame, the length direction of the slide rail is parallel to the axial direction of the first slide rod, and a slider is fixedly connected to the first connecting frame, and the slider is slidably connected to the slide rail.

[0015] To implement the above technical solution, when the first connecting frame drives the crossbeam to move, the slider slides along the slide rail. When the plastic film moves along the length direction of the crossbeam, it is not easy for the first connecting frame and the frame to move, which reduces noise and makes the plastic film conduction more stable.

[0016] As a preferred solution of the utility model, the second adjusting mechanism includes a second motor, a second sliding rod, a second screw, and a second connecting frame. The second connecting frame is arranged on the frame, the second motor is fixed to the second connecting frame, one end of the second sliding rod is fixed to the second connecting frame, the other end of the second sliding rod is slidably connected to the heating mechanism, the second screw is rotatably connected to the second connecting frame and is threadedly connected to the heating mechanism, the second motor drives the second screw to rotate, and the axis of the second sliding rod and the axis of the second screw are parallel and are both arranged along the height direction of the frame.

[0017] To implement the above technical solution, the second motor is started, the second screw is rotated, and the heating mechanism is moved along the axial direction of the second slide rod through the conduction effect of the thread, so that the position of the heating mechanism is adapted to the position of the crossbeam.

[0018] As a preferred solution of the utility model, the second power shaft of the second motor is connected to a second worm, the second worm is meshed with a second worm wheel, and the second worm wheel is rotatably connected to the second connecting frame and fixedly connected to the second screw.

[0019] To implement the above technical solution, the second motor is started, the second power shaft drives the second worm to rotate, and the second worm drives the second worm wheel to rotate. The self-locking property of the worm wheel makes the heating mechanism more stable during the movement and positioning process.

[0020] As a preferred solution of the utility model, the fixing frame is fixedly connected to a column, the upper mounting plate and the lower mounting plate are both slidably connected to the column, the fixing frame is provided with an adjusting frame, the adjusting frame is connected to the upper mounting plate through a transmission assembly, the column is fixedly connected to a third screw, the adjusting frame is rotatably connected to an adjusting sleeve threadedly connected to the third screw, the adjusting frame is connected to an adjusting motor, and the adjusting motor drives the adjusting sleeve to rotate.

[0021] To implement the above technical solution, the adjusting motor is started, the adjusting shaft drives the adjusting sleeve to rotate, and the adjusting sleeve moves along the axial direction of the third screw, thereby adjusting the distance between the upper mounting plate and the mounting plate to adapt to different molds and improve practicality.

[0022] As a preferred solution of the utility model, a reinforcement plate is fixedly connected between adjacent columns.

[0023] Implementing the above technical solution can greatly improve the structural stability of the column.

[0024] In summary, the utility model has the following beneficial effects:

[0025] 1. The first adjustment mechanism drives the crossbeam to move, and the adjustment motor drives the adjustment frame to move, so that the height position of the plastic film is adapted to the positions of the upper mold and the lower mold, thereby eliminating the need for the setting of the heightening column and the placement plate, and reducing the overall thickness of the mold and the production cost;

[0026] 2. The second adjusting mechanism drives the heating mechanism to move so that the position of the heating mechanism is adapted to the position of the crossbeam, so that the heating mechanism can soften the plastic film to facilitate the molding of the plastic film;

[0027] 3. The setting of reinforcement plate improves the structural stability of the column;

[0028] 4. The setting of the slide rail and the slider makes it difficult for the beam to move due to the tension of the plastic film, which can reduce noise and improve production quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of the structure of the mold;

[0030] Figure 2 To embody the external structure schematic diagram of the utility model;

[0031] Figure 3 for Figure 2 A magnified image of point A;

[0032] Figure 4 A schematic diagram showing the position of the heating mechanism;

[0033] Figure 5A schematic diagram showing the structure of the first regulating mechanism;

[0034] Figure 6 To show the position of the column;

[0035] Figure 7 A schematic diagram showing the position of the chain.

[0036] Reference numerals: 2, upper die; 21, upper fixed plate; 22, fixed frame; 23, stretching plate; 24, stretching column; 25, plunger; 26, air chamber cover plate; 27, surrounding edge; 28, pressing frame; 3, lower die; 31, push plate; 32, cavity plate; 33, water plate; 34, lower fixed plate; 35, heightening column; 36, placement plate; 4, frame; 41, fixed frame; 411, column; 412, third screw; 42, upper mounting plate; 43, lower mounting plate; 431, cylinder; 5, adjustment frame; 51, Adjusting sleeve; 52, adjusting motor; 53, first sprocket; 54, second sprocket; 55, chain; 6, reinforcing plate; 7, crossbeam; 8, first adjusting mechanism; 81, first motor; 82, first slide rod; 83, first screw rod; 84, first connecting frame; 85, first worm; 86, first worm wheel; 87, slider; 9, second adjusting mechanism; 91, second motor; 92, second slide rod; 93, second screw rod; 94, second connecting frame; 95, second worm; 96, second worm wheel; 97, slideway. DETAILED DESCRIPTION

[0037] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0038] A lifting structure of a multi-station plastic thermoforming machine comprises a frame 4, a fixing frame 41, an upper mounting plate 42, a lower mounting plate 43, and a crossbeam 7. The height direction of the frame 4 is arranged along the vertical direction.

[0039] The fixing frame 41 is fixed to the middle of the frame 4, and four vertically arranged columns 411 are fixedly connected to the fixing frame 41. The upper mounting plate 42 and the lower mounting plate 43 are both slidably connected to the columns 411, and the lower mounting plate 43 is driven by a cylinder 431. An adjusting frame 5 is arranged on the fixing frame 41, and the adjusting frame 5 is connected to the upper mounting plate 42 through a transmission assembly. The transmission assembly is a prior art, and will not be described in detail in this embodiment.

[0040] A third screw rod 412 is fixedly connected to the upper end of each column 411, and the third screw rod 412 is coaxially arranged with the column 411. An adjusting sleeve 51 threadedly connected to the third screw rod 412 is rotatably connected to the adjusting frame 5. An adjusting motor 52 is fixedly connected to the upper surface of the adjusting frame 5, a first sprocket 53 is fixedly connected to the adjusting shaft of the adjusting motor 52, a second sprocket 54 is fixedly connected to the adjusting sleeve 51, and the first sprocket 53 and the second sprocket 54 are conducted through a chain 55. The adjusting motor 52 is a servo motor. Figure 6 The dotted line in FIG. 5 is the distribution mode of the chain 55 .

[0041] A reinforcing plate 6 is fixedly connected between two adjacent columns 411 .

[0042] When the adjusting motor 52 is started, the first sprocket 53 rotates, and the four second sprockets 54 rotate synchronously through the conduction of the chain 55, so that the adjusting frame 5 moves along the axial direction of the third screw rod 412. The adjusting frame 5 is positioned on the third screw rod 412 through the self-locking property of the thread.

[0043] A mold is connected between the upper mounting plate 42 and the lower mounting plate 43 . The upper mold 2 or the lower mold 3 is fixed on the upper mounting plate 42 , and the lower mold 3 or the upper mold 2 is fixed on the lower mounting plate 43 .

[0044] The crossbeam 7 passes between the upper mounting plate 42 and the lower mounting plate 43. A first adjustment mechanism 8 is provided on the frame 4 for driving the crossbeam 7 to move along the height direction of the frame 4. The first adjustment mechanism 8 has two and is respectively located at both ends of the frame 4, so that the horizontal upward or downward movement of the crossbeam 7 is more stable.

[0045] The first adjustment mechanism 8 includes a first motor 81, a first slide bar 82, a first screw 83, and a first connecting frame 84. The first connecting frame 84 is fixedly connected to the lower surface of the crossbeam 7, the first motor 81 is fixed to the frame 4, a first worm 85 arranged horizontally is fixedly connected to the first power shaft of the first motor 81, the first worm 85 is meshed with a first worm wheel 86, and the axis of the first worm wheel 86 is arranged along the vertical direction. The first worm wheel 86 is rotatably connected to the frame 4 and fixedly connected to the first screw 83, and the first worm wheel 86 is coaxially arranged with the first screw 83.

[0046] The first screw rod 83 is rotatably connected to the frame 4 and is threadedly connected to the first connecting frame 84. The first slide bar 82 is slidably connected to the frame 4 and is fixedly connected to the first connecting frame 84; the axis of the first screw rod 83 and the axis of the first slide bar 82 are arranged in parallel, and the axial direction of the first screw rod 83 is arranged along the height direction of the frame 4.

[0047] The frame 4 is fixedly connected with a slide rail, and the length direction of the slide rail is parallel to the axial direction of the first slide bar 82. The side wall of the first connecting frame 84 is fixedly connected with a slider 87, and the slider 87 is slidably connected to the slide rail. One side of the first connecting frame 84 has two sliders 87, and the two sliders 87 are arranged up and down.

[0048] When the first motor 81 is driven, the first worm 85 drives the first worm wheel 86 to rotate, and the first worm wheel 86 drives the first screw 83 to rotate. Through the conduction of the thread, the first connecting frame 84 moves along the length direction of the first sliding rod 82, thereby adjusting the height position of the beam 7.

[0049] The frame 4 is provided with a heating mechanism, and the heating mechanism is located between the fixing frame 41 and the first adjusting mechanism 8. The frame 4 is provided with a second adjusting mechanism 9 for driving the heating mechanism to move along the height direction of the frame 4.

[0050] The second adjustment mechanism 9 includes a second motor 91, a second slide bar 92, a second screw 93, and a second connecting frame 94. A horizontally arranged slideway 97 is fixedly connected to the frame 4, and the second connecting frame 94 is slidably connected to the slideway 97. The second motor 91 is fixed to the upper surface of the second connecting frame 94, and a horizontally arranged second worm 95 is fixedly connected to the second power shaft of the second motor 91. The second worm 95 is meshed with a second worm gear 96. The second worm gear 96 is rotatably connected to the second connecting frame 94 and fixedly connected to the second screw 93. The axes of the second worm gear 96 and the second screw 93 are both arranged along the vertical direction.

[0051] The second slide bar 92 is vertically arranged, one end of the second slide bar 92 is fixed on the second connecting frame 94, and the other end of the second slide bar 92 is slidably fixedly connected with the heating mechanism. The second screw rod 93 is threadedly connected with the heating mechanism. The axis of the second slide bar 92 and the axis of the second screw rod 93 are parallel and are both arranged along the height direction of the frame 4.

[0052] The second motor 91 is started, the second worm 95 rotates, the second worm 95 drives the second worm wheel 96 to rotate, the second worm wheel 96 drives the second screw 93 to rotate, and the heating mechanism can be moved along the length direction of the second slide bar 92 through the conduction effect of the thread, so that the height position of the heating mechanism is adapted to the height position of the crossbeam 7, and the second connecting frame 94 is pushed to move along the slideway 97, so that the plastic film can pass through the heating mechanism. When the heating mechanism is started, the plastic film can be softened to facilitate the processing of the plastic film.

[0053] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A lifting structure of a multi-station plastic thermoforming machine, comprising a frame (4), a fixed frame (41), an upper mounting plate (42), a lower mounting plate (43), and a crossbeam (7), wherein the fixed frame (41) is fixed to the frame (4), the upper mounting plate (42) and the lower mounting plate (43) are both slidably connected to the fixed frame (41), a mold is connected between the upper mounting plate (42) and the lower mounting plate (43), and the crossbeam (7) passes through between the upper mounting plate (42) and the lower mounting plate (43), wherein: The frame (4) is provided with a first adjustment mechanism (8) for driving the crossbeam (7) to move along the height direction of the frame (4), the frame (4) is provided with a heating mechanism, and the frame (4) is provided with a second adjustment mechanism (9) for driving the heating mechanism to move along the height direction of the frame (4).

2. The lifting structure of a multi-station plastic thermoforming machine according to claim 1 is characterized in that: The first adjustment mechanism (8) comprises a first motor (81), a first sliding rod (82), a first screw rod (83), and a first connecting frame (84); the first connecting frame (84) is fixedly connected to the crossbeam (7); the first motor (81) is fixed to the frame (4); the first sliding rod (82) is slidably connected to the frame (4) and fixedly connected to the first connecting frame (84); the first screw rod (83) is rotatably connected to the frame (4) and threadedly connected to the first connecting frame (84); the first screw rod (83) is driven to rotate by the first motor (81); the first screw rod (83) and the first sliding rod (82) are arranged in parallel; and the axial direction of the first screw rod (83) is arranged along the height direction of the frame (4).

3. The lifting structure of a multi-station plastic thermoforming machine according to claim 2 is characterized in that: A first worm (85) is connected to the first power shaft of the first motor (81), the first worm (85) is meshed with a first worm wheel (86), the first worm wheel (86) is rotatably connected to the frame (4) and fixedly connected to the first screw (83), and the first worm wheel (86) is coaxially arranged with the first screw (83).

4. The lifting structure of a multi-station plastic thermoforming machine according to claim 3 is characterized in that: Both ends of the frame (4) are provided with first adjustment mechanisms (8).

5. The lifting structure of a multi-station plastic thermoforming machine according to claim 4 is characterized in that: The frame (4) is fixedly connected with a slide rail, the length direction of which is parallel to the axial direction of the first slide rod (82); the first connecting frame (84) is fixedly connected with a slider (87), and the slider (87) is slidably connected to the slide rail.

6. The lifting structure of a multi-station plastic thermoforming machine according to claim 1 or 4, characterized in that: The second adjustment mechanism (9) comprises a second motor (91), a second slide rod (92), a second screw rod (93), and a second connecting frame (94); the second connecting frame (94) is arranged on the frame (4); the second motor (91) is fixed on the second connecting frame (94); one end of the second slide rod (92) is fixed on the second connecting frame (94); the other end of the second slide rod (92) is slidably connected to the heating mechanism; the second screw rod (93) is rotatably connected to the second connecting frame (94) and is threadedly connected to the heating mechanism; the second motor (91) drives the second screw rod (93) to rotate; the axis of the second slide rod (92) and the axis of the second screw rod (93) are parallel and are both arranged along the height direction of the frame (4).

7. The lifting structure of a multi-station plastic thermoforming machine according to claim 6 is characterized in that: The second power shaft of the second motor (91) is connected to a second worm (95), the second worm (95) is meshed with a second worm wheel (96), and the second worm wheel (96) is rotatably connected to the second connecting frame (94) and fixedly connected to the second screw (93).

8. The lifting structure of a multi-station plastic thermoforming machine according to claim 7 is characterized in that: The fixing frame (41) is fixedly connected with a column (411), the upper mounting plate (42) and the lower mounting plate (43) are both slidably connected with the column (411), an adjusting frame (5) is arranged on the fixing frame (41), the adjusting frame (5) is connected with the upper mounting plate (42) through a transmission assembly, a third screw rod (412) is fixedly connected with the column (411), an adjusting sleeve (51) threadedly connected with the third screw rod (412) is rotatably connected with the adjusting frame (5), an adjusting motor (52) is connected with the adjusting frame (5), and the adjusting motor (52) drives the adjusting sleeve (51) to rotate.

9. The lifting structure of a multi-station plastic thermoforming machine according to claim 8 is characterized in that: A reinforcement plate (6) is fixedly connected between adjacent columns (411).

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