Lower pressing plate fixing device and hot press

Abstract

The utility model relates to the technical field of hot presses, and particularly discloses a lower pressing plate fixing device and a hot press, a machine shell and a first hot pressing plate are connected through a fixing mechanism, and the fixing mechanism comprises a lower fixing seat, an upper fixing seat and a buffering piece; when the first hot pressing plate is heavily pressed by the upper pressing plate, the pressure error of the upper pressing plate can be made up through the vertical buffering effect of the buffering piece, the first hot pressing plate is protected against damage, and therefore the service life of the hot press is prolonged; a fixing mechanism is arranged at the middle position of the lower end of the first hot pressing plate, and in the fixing mechanism at the position, an upper fixing seat and a lower fixing seat are relatively fixed in the left-right direction, so that in the left-right direction, when the first hot pressing plate is heated, although the left end and the right end of the first hot pressing plate are heated and expand outwards, the middle position of the lower end of the first hot pressing plate is fixed; after being cooled and shrunk, the left and right ends of the first hot-pressing plate can be reset to initial positions, so that the first hot-pressing plate is prevented from deviating.

Description

Technical Field

[0001] The utility model relates to the technical field of hot presses, and particularly relates to a lower platen fixing device and a hot press. Background Art

[0002] Melamine board is fully called melamine impregnated paper-faced artificial board. Melamine board is made by soaking paper with different colors or textures in melamine resin adhesive, then drying to a certain degree of curing, laying it on the surface of particle board, moisture-proof board, medium density fiberboard, plywood, blockboard, multi-layer board or other hard fiber boards, and then hot-pressing to form a decorative board.

[0003] In the manufacturing process of melamine board, it is necessary to lay the substrate and the surface paper overlappingly, and then under the action of the hot press, the embossing of the substrate and the printed pattern of the paper are completely overlapped. This kind of equipment can refer to a hot press disclosed in Chinese Patent Publication No. CN210705200U, which includes a hot press body and a connecting rod mechanism. The hot press body includes an upper die that can move up and down and a fixed lower die. The bottom surface of the upper die and the top surface of the lower die are respectively provided with an upper mold and a lower mold; two rows of rotatable first pulleys are respectively vertically arranged on the left and right sides of the upper die, and two guiding blocks respectively slidably connected to the first pulleys are correspondingly provided on the hot press body; the connecting rod mechanism includes a rotating shaft rotatably arranged above the hot press body, connecting rods respectively fixed at both ends of the rotating shaft, and a swing rod hinged at one end to the connecting rod; connecting seats are respectively arranged on the front and rear sides of the upper die; the other end of the swing rod is hinged to the connecting seat, a moving rod adapted to be penetrated by the swing rod is vertically fixed to the connecting seat, a sleeve rod fixed to the hot press body is sleeved on the moving rod, and through holes are respectively opened on the left and right sides of the sleeve rod, and second pulleys slidably connected to the moving rod are provided corresponding to the through holes of the sleeve rod.

[0004] For the existing hot presses, generally, a lower die hot press plate is added to the bottom of the lower template for heat transfer to the lower template. Usually, the lower die hot press plate is arranged at the bottom of the hot pressing area of the hot press. During the hot pressing process of the melamine board, the upper template needs to apply a pressure of more than 2000 catties, and the lower die hot press plate is easily damaged during the hot pressing process; on the other hand, due to the influence of thermal expansion and contraction, the lower die hot press plate will have a certain degree of deformation. Usually, it is not directly fixed to the machine shell of the hot press. The conventional method is to directly place it at the bottom of the hot pressing area of the hot press. However, during the actual processing, due to the influence of its thermal expansion and contraction, the lower die hot press plate often has a deviation, resulting in the misalignment of the substrate and the surface paper.

[0005] Therefore, the existing technology still needs to be improved and developed. Summary of the Utility Model

[0006] In view of the deficiencies of the above-mentioned prior art, the purpose of the present utility model is to provide a lower platen fixing device and a hot press, so as to solve the problems of damage to the lower die hot platen and easy deviation of the lower die hot platen due to the influence of thermal expansion and contraction in the prior art.

[0007] A lower platen fixing device, comprising:

[0008] A machine housing;

[0009] A lower platen, disposed inside the machine housing;

[0010] A first hot platen, fixed to the lower end of the lower platen;

[0011] A fixing mechanism, including a lower fixing seat fixed to the machine housing, an upper fixing seat fixed to the first hot platen, and a buffer member connected between the lower fixing seat and the upper fixing seat in the vertical direction;

[0012] The upper fixing seat is movable in the front-back direction relative to the lower fixing seat;

[0013] The upper fixing seat and the lower fixing seat can be relatively movable or relatively fixed in the left-right direction.

[0014] Specifically, the lower fixing seat is fixed to the machine housing through a first fastener, and the upper fixing seat is fixed to the lower platen through a second fastener.

[0015] Specifically, the second fastener includes a rod portion passing upward through the upper fixing seat and a head connected to the lower end of the rod portion. There is a buffer interval between the head and the lower fixing seat, and a first elastic body is also sleeved on the rod portion, and the first elastic body is located between the head and the upper fixing seat.

[0016] Specifically, a limiting groove is provided on the lower fixing seat, a limiting block is connected to the lower end of the upper fixing seat, the limiting block can move in the vertical direction in the limiting groove, the limiting block can move in the front-back direction in the limiting groove, and the width of the limiting groove in the left-right direction is greater than the width of the limiting block in the left-right direction.

[0017] Specifically, the fixing mechanism further includes left and right limiting members, and the left and right limiting members include two positioning pins fixed to the left and right sides of the lower fixing seat and inserted into the limiting groove and fixedly connected to the limiting block.

[0018] Specifically, the buffer member includes a vertical rod movable in the vertical direction, a limiting ring fixed to the lower end of the vertical rod, and a second elastic body sleeved outside the vertical rod and used to connect the lower fixing seat and the limiting ring. A vertical blind hole is provided at the lower end of the limiting block, and the vertical rod moves vertically in the blind hole.

[0019] Specifically, the lower fixing base is further provided with an activity hole for the vertical rod to move in each direction.

[0020] Specifically, there is a heat insulation interval between the first hot pressing plate and the machine housing in the vertical direction.

[0021] A hot press includes the lower pressing plate fixing device. The hot press further includes an upper pressing plate that can move up and down above the lower pressing plate, and a second hot pressing plate fixed to the upper end of the upper pressing plate. A hot pressing area is formed between the lower pressing plate and the upper pressing plate.

[0022] Specifically, there are no less than two fixing mechanisms;

[0023] At least one of the fixing mechanisms is arranged at the middle position of the lower end of the first hot pressing plate, and the upper fixing base and the lower fixing base are fixed relative to each other in the left-right direction;

[0024] At least one of the fixing mechanisms is arranged on the left and right sides of the lower end of the first hot pressing plate, and the upper fixing base and the lower fixing base can move relative to each other in the left-right direction.

[0025] The beneficial effects of the present utility model:

[0026] The lower pressing plate fixing device and the hot press of the present utility model can be applied to the hot pressing process of melamine boards. The fixing mechanism connects the machine housing and the first hot pressing plate. The fixing mechanism includes a lower fixing base, an upper fixing base, and a buffer member. When the first hot pressing plate is heavily pressed by the upper pressing plate, through the vertical buffering effect of the buffer member, the pressure error of the upper pressing plate can be compensated, protecting the first hot pressing plate from damage, thereby extending the service life of the hot press. A fixing mechanism is arranged at the middle position of the lower end of the first hot pressing plate. In the fixing mechanism at this position, the upper fixing base and the lower fixing base are fixed relative to each other in the left-right direction. Therefore, in the left-right direction, when the first hot pressing plate is heated, although the left and right ends of the first hot pressing plate expand outward due to heat, since the middle position of the lower end of the first hot pressing plate is fixed, after the left and right ends of the first hot pressing plate cool and contract, they can return to the initial position, thereby preventing the first hot pressing plate from being displaced. Description of the drawings

[0027] Figure 1 Is a perspective view of the hot press of this embodiment;

[0028] Figure 2 Is the front view of the hot press of this embodiment;

[0029] Figure 3 Is Figure 2 The enlarged view of part A in

[0030] Figure 4 Is Figure 3 The sectional view of the fixing mechanism in

[0031] Figure 5 is Figure 2 the enlarged view of part B in

[0032] Figure 6 is Figure 5 the sectional view of the fixing mechanism in

[0033] Figure 7 is Figure 5 the front view of the fixing mechanism in

[0034] Figure 8 is Figure 7 the sectional view along line C-C in

[0035] Figure 9 is the front view of the casing, the first hot pressing plate and the fixing mechanism of this embodiment;

[0036] Figure 10 is Figure 9 the sectional view along line D-D in

[0037] Figure 11 is Figure 10 the enlarged view of part E in

[0038] Figure 12 is Figure 10 the enlarged view of part F in

[0039] The reference numerals are: casing 10, lower pressing plate 20, first hot pressing plate 30, fixing mechanism 40, lower fixing seat 41, upper fixing seat 42, buffer member 43, first fastener 50, second fastener 60, rod portion 61, head portion 62, buffer interval 601, first elastic body 63, limiting groove 411, limiting block 421, left and right limiting members 44, vertical rod 431, limiting ring 432, second elastic body 433, blind hole 422, movable hole 412, heat insulation interval 70, upper pressing plate 80, second hot pressing plate 90. Specific Embodiments

[0040] The present utility model provides a lower pressing plate fixing device and a hot press. To make the purpose, technical solution and effects of the present utility model clearer and more definite, the following takes examples with reference to the attached drawings to further elaborate on the present utility model in detail. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0041] In the description of the present utility model, it should be understood that regarding the orientation description, such as the up, down, front, back, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0042] As Figures 1 to 12 shown, this embodiment discloses a lower platen fixing device and a hot press. The hot press includes a lower platen fixing device, an upper platen 80 that can move up and down above the lower platen 20, and a second hot platen 90 fixed to the upper end of the upper platen 80. A hot pressing area is formed between the lower platen 20 and the upper platen 80.

[0043] Among them, the lower platen fixing device includes:

[0044] A machine housing 10;

[0045] A lower platen 20, arranged inside the machine housing 10;

[0046] A first hot platen 30, fixed to the lower end of the lower platen 20;

[0047] A fixing mechanism 40, including a lower fixing seat 41 fixed to the machine housing 10, an upper fixing seat 42 fixed to the first hot platen 30, and a buffer member 43 connected between the lower fixing seat 41 and the upper fixing seat 42 in the up and down direction;

[0048] The upper fixing seat 42 can move back and forth relative to the lower fixing seat 41;

[0049] The upper fixing seat 42 and the lower fixing seat 41 can move relative to each other or be relatively fixed in the left and right directions.

[0050] The lower fixing seat 41 is fixed to the machine housing 10 through a first fastener 50, and the upper fixing seat 42 is fixed to the lower platen 20 through a second fastener 60.

[0051] The lower platen fixing device and hot press of this embodiment can be applied to the hot pressing process of melamine boards. The fixing mechanism 40 connects the machine housing 10 and the first hot platen 30. The fixing mechanism 40 includes a lower fixing base 41 fixed to the machine housing 10, an upper fixing base 42 fixed to the first hot platen 30, and a buffer member 43 connected between the lower fixing base 41 and the upper fixing base 42 in the vertical direction. When the first hot platen 30 is heavily pressed by the upper platen 80, through the vertical buffering effect of the buffer member 43, the pressure error of the upper platen 80 can be compensated, protecting the first hot platen 30 from damage, thereby extending the service life of the hot press. It can also make the working pressure and working temperature of the hot platen act evenly on the material to be processed, so that the adhesion between the base board and the facing paper is more dense, uniform, and flat, improving the surface and internal quality of the melamine board.

[0052] Furthermore, there are no less than two fixing mechanisms 40 in this embodiment. Please refer to Figure 1 and Figure 2 , there are three fixing mechanisms 40 in this embodiment in the left - right direction of the first hot platen 30, among which:

[0053] As Figures 2 to 4 shown, there is one fixing mechanism 40 arranged at the middle position of the lower end of the first hot platen 30, and the upper fixing base 42 and the lower fixing base 41 are relatively fixed in the left - right direction;

[0054] As Figure 2 , Figure 5 and Figure 6 shown, there are two fixing mechanisms 40 arranged on the left and right sides of the lower end of the first hot platen 30, and the upper fixing base 42 and the lower fixing base 41 can move relative to each other in the left - right direction.

[0055] Due to the characteristic of thermal expansion and contraction of the first hot platen 30, in order to prevent the first hot platen 30 from being displaced, one fixing mechanism 40 is arranged at the middle position of the lower end of the first hot platen 30 in this embodiment. In the fixing mechanism 40 at this position, the upper fixing base 42 and the lower fixing base 41 are relatively fixed in the left - right direction. Therefore, in the left - right direction, when the first hot platen 30 is heated, although the left and right ends of the first hot platen 30 expand outward due to heat, since the middle position of the lower end of the first hot platen 30 is fixed, after the left and right ends of the first hot platen 30 cool and contract, they can return to the initial position, thereby preventing the first hot platen 30 from being displaced.

[0056] Moreover, fixing mechanisms 40 are arranged on both the left and right sides of the lower end of the first hot platen 30. In the fixing mechanisms 40 at these two positions, the upper fixing base 42 and the lower fixing base 41 can move relative to each other in the left - right direction, enabling the first hot platen 30 to have a certain space for thermal expansion and contraction in the left - right direction.

[0057] Please refer to Figure 3 and Figure 4, the second fastener 60 of this embodiment includes a rod portion 61 that passes upward through the upper fixing seat 42, and a head portion 62 connected to the lower end of the rod portion 61. There is a buffer interval 601 between the head portion 62 and the lower fixing seat 41. The rod portion 61 is also sleeved with a first elastic body 63. The first elastic body 63 can be a spring or a spring sheet. The first elastic body 63 is located between the head portion 62 and the upper fixing seat 42, and is used to provide a buffering effect for the second fastener 6 along the up and down direction.

[0058] Please refer to Figure 4 , a limiting groove 411 is provided on the lower fixing seat 41 of this embodiment. The lower end of the upper fixing seat 42 is connected with a limiting block 421. The limiting block 421 can move up and down in the limiting groove 411, and the limiting block 421 can move back and forth in the limiting groove 411. The width of the limiting groove 411 in the left and right direction is greater than the width of the limiting block 421 in the left and right direction.

[0059] Please refer to Figures 2 to 4 , the fixing mechanism located at the middle position of the lower end of the first hot pressing plate 30 further includes left and right limiting members 44. The left and right limiting members 44 include two positioning pins fixed on the left and right sides of the lower fixing seat 41 and fixedly connected with the limiting block 421 after passing through the limiting groove 411. The position of the limiting block 421 in the left and right direction is restricted by the positioning pins, and the structure is ingenious.

[0060] Please refer to Figure 4 , the buffer member 43 includes a vertical rod 431 that can move up and down, a limiting ring 432 fixed to the lower end of the vertical rod 431, and a second elastic body 433 sleeved on the outside of the vertical rod 431 and used to connect the lower fixing seat 41 and the limiting ring 432. A vertical blind hole 422 is provided at the lower end of the limiting block 421. The vertical rod 431 moves vertically in the blind hole 422. Through the elastic action of the second elastic body 433, when the upper fixing seat 42 is pressed down, the limiting block 421 of the upper fixing seat 42 can press down the nut on the outer side of the upper part of the vertical rod 431, driving the vertical rod 431 to move down. During the downward movement, the second elastic body 433 provides a certain upward elastic force for the vertical rod 431, so that the downward movement of the upper fixing seat 42 has a buffering effect.

[0061] It should be noted that the second elastic body 433 can be a disc spring or a common spring. The second elastic body 433 of this embodiment adopts a disc spring. The disc spring can bear a large load in a small space. Compared with other types of common springs, the disc spring has a larger deformation energy per unit volume and has good buffering and shock absorption capabilities. Of course, the use of the disc spring for the second elastic body 433 in this embodiment is only one of the preferred embodiments. In other embodiments, the second elastic body 433 can also be a spring sheet, a rubber sleeve, etc., and is not limited to the disc spring.

[0062] Please refer to Figure 7 and Figure 8, the lower fixing base 41 of this embodiment is further provided with an activity hole 412 for the vertical rod 431 to move in all directions, and the activity hole 412 is preferably an elongated hole.

[0063] Please refer to Figure 3 and Figure 5 , since the temperature of the first hot pressing plate 30 is relatively high during the hot pressing process, in order to prevent the high temperature of the first hot pressing plate 30 from affecting the normal operation of other components on the casing 10, there is a heat insulation interval 70 between the first hot pressing plate 30 and the casing 10 in the vertical direction. Heat insulation is carried out through the heat insulation interval 70 to prevent the casing 10 from overheating, and it has a good heat insulation and protection effect.

[0064] Please refer to Figure 9 and Figure 12 , in this embodiment, a fixing mechanism 40 is provided at both the front and rear ends of the middle position at the lower end of the first hot pressing plate 30. In the fixing mechanism 40 at this position, the upper fixing base 42 and the lower fixing base 41 are fixed relative to each other in the left-right direction; fixing mechanisms 40 are provided on both the left and right sides at the lower end of the first hot pressing plate 30. In the fixing mechanisms 40 at these two positions, the upper fixing base 42 and the lower fixing base 41 can move relative to each other in the left-right direction, so that the first hot pressing plate 30 has a certain space for thermal expansion and contraction in the left-right direction; therefore, in the left-right direction, when the first hot pressing plate 30 is heated, although the left and right ends of the first hot pressing plate 30 expand outward due to heat, since the middle position at the lower end of the first hot pressing plate 30 is fixed, after the left and right ends of the first hot pressing plate 30 cool and contract, they can return to the initial position, thereby preventing the first hot pressing plate 30 from being displaced.

[0065] The above has specifically described the preferred embodiments of the present invention, but the present invention is not limited to the described embodiments. Those skilled in the art can also make various equivalent variations or substitutions without departing from the spirit of the present invention, and these equivalent variations or substitutions are all included within the scope defined by the claims of the present invention.

Claims

1. A lower pressing plate fixing device, characterized in that, Comprising: A casing (10); A lower pressing plate (20), disposed within the casing (10); A first hot pressing plate (30), fixed to the lower end of the lower pressing plate (20); A fixing mechanism (40), including a lower fixing base (41) fixed to the casing (10), an upper fixing base (42) fixed to the first hot pressing plate (30), and a buffer member (43) connected between the lower fixing base (41) and the upper fixing base (42) in the vertical direction; The upper fixing base (42) is movable in the front - rear direction relative to the lower fixing base (41); The upper fixing base (42) and the lower fixing base (41) can be relatively movable or relatively fixed in the left - right direction.

2. The lower pressing plate fixing device according to claim 1, characterized in that, The lower fixing base (41) is fixed to the casing (10) by a first fastener (50), and the upper fixing base (42) is fixed to the lower pressing plate (20) by a second fastener (60).

3. The lower platen fixing device according to claim 2, characterized in that, The second fastener (60) includes a rod portion (61) passing upward through the upper fixing base (42), and a head portion (62) connected to the lower end of the rod portion (61). There is a buffer interval (601) between the head portion (62) and the lower fixing base (41). The rod portion (61) is also sleeved with a first elastic body (63), and the first elastic body (63) is located between the head portion (62) and the upper fixing base (42).

4. The lower platen fixing device according to claim 1, wherein A limiting groove (411) is provided on the lower fixing base (41). A limiting block (421) is connected to the lower end of the upper fixing base (42). The limiting block (421) is movable in the vertical direction within the limiting groove (411), and the limiting block (421) is movable in the front - rear direction within the limiting groove (411). The width of the limiting groove (411) in the left - right direction is greater than the width of the limiting block (421) in the left - right direction.

5. The lower platen fixing device according to claim 4, characterized in that, The fixing mechanism further includes left - right limiting members (44), and the left - right limiting members (44) include two positioning pins fixed to both left and right sides of the lower fixing base (41) and penetrating into the limiting groove (411) and fixedly connected to the limiting block (421).

6. The lower pressing plate fixing device according to claim 4, wherein, The buffer member (43) includes a vertical rod (431) movable in the vertical direction, a limiting ring (432) fixed to the lower end of the vertical rod (431), and a second elastic body (433) sleeved outside the vertical rod (431) and used for connecting the lower fixing base (41) and the limiting ring (432). A vertical blind hole (422) is provided at the lower end of the limiting block (421), and the vertical rod (431) is vertically movable within the blind hole (422).

7. The fixing device for the lower pressing plate according to claim 6, wherein The lower fixing base (41) is further provided with an activity hole (412) for the vertical rod (431) to move in all directions.

8. The fixing device for the lower pressing plate according to claim 6, characterized in that, There is a heat insulation interval (70) between the first hot pressing plate (30) and the casing (10) in the vertical direction.

9. A hot press, comprising a lower platen fixing device according to any one of claims 1 to 8, characterized in that, The hot press further includes an upper pressing plate (80) movable in the vertical direction above the lower pressing plate (20), and a second hot pressing plate (90) fixed to the upper end of the upper pressing plate (80). A hot pressing area is formed between the lower pressing plate (20) and the upper pressing plate (80).

10. A hot press according to claim 9, characterized in that, There are no less than two fixing mechanisms (40); At least one of the fixing mechanisms (40) is provided at the middle position of the lower end of the first hot pressing plate (30), and the upper fixing seat (42) and the lower fixing seat (41) are fixedly opposed to each other in the left-right direction; At least one of the fixing mechanisms (40) is provided on the left and right sides of the lower end of the first hot pressing plate (30), and the upper fixing seat (42) and the lower fixing seat (41) can move relatively in the left-right direction.

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