A heating platform limiting guide device suitable for a thermoforming machine

Abstract

The application relates to a heating platform limiting guide device suitable for a thermoforming machine and belongs to the technical field of thermoforming equipment, which solves the problem that the heating platform is affected by lateral force when being deformed by heat and is prone to position deviation. The heating platform limiting guide device suitable for the thermoforming machine comprises a heating platform, a heat preservation brick, a water cooling plate, a positioning shaft and a platform connecting screw assembly; the heat preservation brick is arranged on the water cooling plate, and the heating platform is arranged on the heat preservation brick; the positioning shaft is inserted into the bottom of the heating platform, penetrates through the heat preservation brick and is fixed on the water cooling plate, and is used for realizing the guiding effect on the heating platform; the platform connecting screw assembly penetrates through the heating platform and the heat preservation brick and is installed on the water cooling plate, and is used for realizing the limiting effect on the heating platform. Through the cooperation of the positioning shaft and the platform connecting screw assembly, the single dimension deformation of the heating platform is realized, the problem that the heating platform is affected by lateral force when being deformed by heat and is prone to position deviation is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hot forming equipment, in particular to a heating platform limiting and guiding device suitable for a hot forming machine. BACKGROUND

[0002] The hot forming machine is a high-temperature pressure forming device, which is mainly used in the fields of aerospace, high-speed rail and high-level test equipment, and is used for producing and processing various thin-walled parts which need to be light and not easy to deform.

[0003] In the prior art, a whole heating platform is used on the hot forming machine, heat insulation bricks are placed on the water-cooled plate to support and fix the upper heating platform, and the heating platform is fixed by a platform connecting screw assembly. However, the heating platform will be deformed in all directions due to heat during work, so that the heating platform lacks necessary and effective limitation, and thus the heating platform is easy to deviate in position when subjected to lateral force for a long time. When the deviation accumulates to a certain extent, it will obviously affect the normal work of the equipment, reduce the performance precision, and even cause damage to the equipment in a serious case. SUMMARY

[0004] In view of the above analysis, the present application aims to provide a heating platform limiting and guiding device suitable for a hot forming machine, so as to solve the problem that the heating platform is easy to deviate in position when subjected to lateral force due to heat deformation in the prior art.

[0005] The main purpose of the present application is achieved by the following technical scheme:

[0006] A heating platform limiting and guiding device suitable for a hot forming machine comprises a heating platform, heat insulation bricks, a water-cooled plate, a positioning shaft and a platform connecting screw assembly. The heat insulation bricks are arranged on the water-cooled plate, and the heating platform is arranged on the heat insulation bricks. The positioning shaft is inserted into the bottom of the heating platform and fixed on the water-cooled plate through the heat insulation bricks, and is used for guiding the heating platform. The platform connecting screw assembly is installed on the water-cooled plate through the heating platform and the heat insulation bricks, and is used for limiting the heating platform.

[0007] Further, the heating platform comprises a plurality of heating platform units, and the plurality of heating platform units are arranged in parallel and connected.

[0008] Further, the heating platform unit comprises a positioning shaft hole, and a plurality of positioning shaft holes are arranged on the axis of the heating platform unit.

[0009] Further, the positioning shaft hole is a blind hole arranged at the bottom of the heating platform unit.

[0010] In an optional embodiment of the present application, the middle positioning shaft hole on the heating platform unit is circular, the diameter of the circular positioning shaft hole is equal to the diameter of the positioning shaft; and the circular positioning shaft hole is used as a reference to sequentially arrange the elliptical positioning shaft holes with gradually increasing lengths along the length direction of the heating platform unit to the two ends of the heating platform unit (i.e., the length direction of the elliptical positioning shaft hole is the same as the length direction of the heating platform unit), and the width of the elliptical positioning shaft hole is equal to the diameter of the positioning shaft.

[0011] Further, the heating platform unit further comprises a connecting screw hole.

[0012] Further, the connecting screw hole is provided in plurality, and the plurality of connecting screw holes and the plurality of positioning shaft holes are uniformly arranged on the axis of the heating platform unit.

[0013] Further, the heating platform unit further comprises a heating pipe channel for placing a heating pipe.

[0014] Further, the heating platform unit further comprises a top rod hole for the in-and-out of a top rod.

[0015] Further, the water-cooled plate is provided with a threaded hole and a fixing hole; the threaded hole is used for fixing the positioning shaft, and the fixing hole is used for fixing the platform connecting screw assembly.

[0016] Further, the positioning shaft comprises a positioning portion, a hand screwing portion and a limiting portion; the positioning portion is arranged at one end of the positioning shaft, the limiting portion is arranged at the other end of the positioning shaft, and the hand screwing portion is arranged on the shaft wall of the positioning shaft.

[0017] In an optional embodiment of the present application, the platform connecting screw assembly comprises a connecting bolt, a spherical washer, a spherical cap, a disc spring, a limiting nut and a cover plate.

[0018] In an optional embodiment of the present application, the spherical washer is arranged in the T-shaped through hole of the connecting screw hole of the heating platform unit through the connecting bolt, the T-shaped through hole is provided with a spherical mesa, and the spherical washer is connected with the spherical mesa of the T-shaped through hole in a matched mode.

[0019] Compared with the prior art, the present application can at least achieve one of the following beneficial effects:

[0020] (1) The heating platform limiting guide device suitable for the thermoforming machine comprises a heating platform, a heat preservation brick, a water cooling plate, a positioning shaft and a platform connecting screw assembly, the heat preservation brick is installed on the water cooling plate, the heating platform is arranged on the heat preservation brick, the positioning shaft passes through the bottom of the heating platform and the heat preservation brick and is fixed on the water cooling plate, and is used for guiding the heating platform; the platform connecting screw assembly passes through the heating platform and the heat preservation brick and is installed on the water cooling plate, and is used for limiting the heating platform; through the guiding action of the positioning shaft and the limiting action of the platform connecting screw assembly, the positioning and limitation of the heating platform are realized, the lateral deviation of the platform is effectively prevented, the use time of the equipment in normal working condition is prolonged, and the production efficiency is improved.

[0021] (2) The heating platform is composed of a plurality of heating platform units, and each heating platform unit is in parallel and parallel arrangement. During the heating or cooling process, the plurality of strip-shaped heating platform units can produce different degrees of elongation and contraction changes, and do not affect each other, so that the changes of the heating platform are more diversified, and the heating platform unit will not be affected by the adjacent heating platform unit to produce protrusions or depressions caused by inconsistent translation, thereby increasing the freedom of elongation and contraction of the heating platform itself.

[0022] (3) The heating platform unit comprises a plurality of positioning shaft holes, and the plurality of positioning shaft holes are uniformly and spacedly arranged on the axis of the heating platform unit. The hole arranged in the middle of the positioning shaft hole is circular, the diameter of the circular positioning shaft hole is equal to the diameter of the positioning shaft; the circular positioning shaft hole is taken as a reference, and an elliptical positioning shaft hole with gradually increasing length is sequentially arranged at both ends of the heating platform unit along the length direction of the heating platform unit, and the width of the elliptical positioning shaft hole is equal to the diameter of the positioning shaft. When the heating platform unit is elongated or contracted, it extends or retracts towards both ends based on the circular positioning shaft hole, and under the limitation of the positioning shaft, the heating platform unit can only extend or contract along the length direction of the elliptical positioning shaft hole, so that the heating platform unit keeps the center fixed, and directional extension and normal temperature reset are performed according to the fitting gap between the positioning shaft and the elliptical positioning shaft hole during high-temperature extension, so as to realize the positioning and length direction extension guiding and limiting of the heating platform, and ensure that the heating platform does not deviate laterally during work.

[0023] (4) The limiting portion of the positioning shaft can be inserted into the positioning shaft hole on the heating platform and slide in the positioning shaft hole. The positioning shaft and the plurality of positioning shaft holes on the heating platform unit can be used as the reference position during installation of the heating platform, thereby increasing the positioning basis during installation of the heating platform, and improving the installation precision of the whole equipment.

[0024] (5) The platform connecting screw assembly of the present application comprises a connecting bolt and a spherical washer, the spherical washer is arranged in the T-shaped through hole of the connecting screw hole of the heating platform unit through the connecting bolt. The spherical washer is connected with the spherical table surface of the T-shaped through hole, so that when the heating platform unit moves, the connecting bolt can realize the offset of any angle on the spherical table surface of the T-shaped through hole through the spherical washer, thereby realizing the angle compensation of the connecting bolt during the movement of the heating platform unit.

[0025] (6) The ball cap in the platform connecting screw assembly of the present application is consistent with the arc of the semispherical groove of the water-cooled plate, and the ball cap can realize limiting cooperation through the semispherical groove. The ball cap is sleeved on the connecting bolt, the limiting nut is arranged below the ball cap and is screw-connected with the connecting bolt, and a disc spring is arranged between the limiting nut and the ball cap, wherein the compression elongation degree of the disc spring is determined by the limiting nut and the ball cap clamped in the semispherical groove. The disc spring is pre-compressed by the limiting nut at room temperature, and the water-cooled plate of the semispherical groove is indirectly pressed by the disc spring against the ball cap, so that the platform connecting screw assembly has sufficient pre-tightening force on the heating platform unit, thereby being capable of limiting the displacement of the heating platform unit.

[0026] (7) The connecting bolt in the platform connecting screw assembly of the present application will be lengthened due to high-temperature expansion, at this time, the ball cap sleeved on the connecting bolt and the disc spring between the limiting nut screw-connected on the connecting bolt are elastically elongated due to the lengthening of the connecting bolt, thereby compensating the lengthening amount of the connecting bolt, and the heating platform unit can still realize the limitation and constraint force on its displacement through the tension of the disc spring.

[0027] In the present application, the above-mentioned technical solutions can be combined with each other to realize more preferred combination schemes. Other features and advantages of the present application will be described in the subsequent description, and some advantages will become apparent from the description or be understood by implementing the present application. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:

[0029] Figure 1 It is an explosion view of the heating platform limiting and guiding device suitable for a thermoforming machine according to the present application;

[0030] Figure 2 It is a structural schematic view of the heating platform limiting and guiding device suitable for a thermoforming machine according to the present application;

[0031] Figure 3 It is a structural schematic view of the top of the heating platform of the heating platform limiting and guiding device suitable for a thermoforming machine according to the present application;

[0032] Figure 4 This is a schematic diagram of the bottom structure of the heating platform of the heating platform limiting and guiding device applicable to the thermoforming machine of the present invention;

[0033] Figure 5 This is a schematic diagram of the positioning shaft of the heating platform limiting and guiding device of the present invention applicable to a thermoforming machine;

[0034] Figure 6 This is a schematic diagram of the platform connecting screw assembly of the heating platform limiting and guiding device for a thermoforming machine according to the present invention;

[0035] Figure 7 This is an assembly diagram of the platform connecting screw assembly of the heating platform limiting guide device for a thermoforming machine according to the present invention.

[0036] Figure label:

[0037] 1-Heating platform; 11-Heating platform unit; 111-Positioning shaft hole; 112-Connecting screw hole; 113-Heating pipe channel; 114-Top rod hole; 2-Insulation brick; 3-Water cooling plate; 4-Positioning shaft; 41-Positioning part; 42-Hand-tightening part; 43-Limiting part; 5-Platform connecting screw assembly; 51-Connecting bolt; 52-Spherical washer; 53-Spherical cap; 54-Disc spring; 55-Limiting nut; 56-Cover plate. Detailed Implementation

[0038] The following detailed description of a heating platform limiting and guiding device suitable for a thermoforming machine, with reference to specific embodiments, is provided. These embodiments are for comparative and illustrative purposes only, and the present invention is not limited to these embodiments.

[0039] A specific embodiment of the present invention discloses a heating platform limiting and guiding device suitable for a thermoforming machine, such as... Figures 1-2 As shown, the system includes a heating platform 1, insulation bricks 2, a water-cooled plate 3, a positioning shaft 4, and a platform connecting screw assembly 5. The insulation bricks 2 are mounted on the water-cooled plate 3, and the heating platform 1 is set on the insulation bricks 2. The positioning shaft 4 passes through the bottom of the heating platform 1 and the insulation bricks 2 and is fixed to the water-cooled plate 3, serving to guide the heating platform 1. The platform connecting screw assembly 5 passes through the heating platform 1 and the insulation bricks 2 and is mounted on the water-cooled plate 3, serving to limit the heating platform 1. Through the guiding function of the positioning shaft 4 and the limiting function of the platform connecting screw assembly 5, the heating platform 1 is positioned and limited, effectively preventing the cumulative lateral displacement of the heating platform during operation, extending the normal operating time of the equipment, and improving production efficiency.

[0040] Further, the heating platform 1 of the present application is composed of a plurality of heating platform units 11, which are in the shape of a strip, and each of the heating platform units 11 is arranged in parallel with each other and connected to form a heating platform 1 with an area equal to that of the water-cooled plate 3.

[0041] It is worth mentioning that, since the heating platform limiting guide device suitable for the thermoforming machine is subjected to a heating temperature of thousands of degrees during use, the heating platform 1 will extend and contract in multiple directions due to thermal expansion and contraction, and the heating platform 1 will be subjected to multiple temperature rises and falls in actual operation, thus leading to uncontrollable extension and contraction directions of the heating platform 1. Therefore, during the temperature rising or falling process, each of the plurality of strip-shaped heating platform units 11 can produce different degrees of elongation and contraction changes, and they do not affect each other, so that the changes of the heating platform 1 are more diversified, and the heating platform units 11 will not be affected by the adjacent heating platform units 11 to produce protrusions or depressions caused by inconsistent translation, thereby increasing the freedom of elongation and contraction of the heating platform itself.

[0042] Further, as shown in Figures 3-4 The heating platform unit 11 includes a plurality of positioning shaft holes 111, which are uniformly arranged on the axis of the heating platform unit 11. And each positioning shaft hole 111 is arranged at the bottom of the heating platform unit 11, that is, the positioning shaft hole 111 is a blind hole arranged at the bottom of the heating platform unit 11, which does not pass through the top of the heating platform unit 11, so that the flat area of the top of the heating platform unit 11 is increased, the contact area between the heated material and the heating platform 1 is increased, the heat dissipation through the hole is avoided, the heating area is increased, and thus the heating efficiency is improved.

[0043] Further, one end of the positioning shaft 4 is fixed on the water-cooled plate 3, and the other end extends into the positioning shaft hole 111, and the end of the positioning shaft 4 extending into the positioning shaft hole 111 can reciprocate in the positioning shaft hole 111.

[0044] In order to prevent the heating platform from moving in multiple directions due to thermal expansion and contraction when the internal temperature of the heating platform limiting guide device suitable for the thermoforming machine rises to thousands of degrees, and to prevent the uncontrollable problem of multiple-direction movement of the heating platform after multiple temperature rises and falls, the positioning shaft hole 111 on the heating platform unit 11 is specially set.

[0045] Specifically, the positioning shaft hole 111 arranged in the middle of the heating platform unit 11 is circular, and the diameter of the circular positioning shaft hole 111 is equal to the diameter of the positioning shaft 4; the circular positioning shaft hole 111 is taken as a reference, and the elliptical positioning shaft holes 111 with gradually increasing lengths are sequentially arranged at both ends of the heating platform unit 11 along the length direction of the heating platform unit 11 (that is, the length direction of the elliptical positioning shaft hole 111 is the same as the length direction of the heating platform unit 11), and the width of the elliptical positioning shaft hole 111 is equal to the diameter of the positioning shaft.

[0046] When the heating platform unit 11 is stretched or contracted, the circular positioning shaft hole 111 is taken as a reference to extend or retract to both ends, and under the limiting of the positioning shaft 4, the heating platform unit 11 can only be stretched or contracted along the length direction of the elliptical positioning shaft hole 111, so that the heating platform unit 11 keeps the center unchanged, and according to the matching gap between the positioning shaft 4 and the elliptical positioning shaft hole 111, directional stretching and normal temperature resetting are performed when the high-temperature stretching is performed, so as to realize the positioning of the heating platform 1 and the extension direction limiting in the length direction, so as to ensure that the heating platform 1 does not deviate laterally in the working process.

[0047] Further, the heating platform unit 11 further comprises a plurality of connecting screw holes 112, and the plurality of connecting screw holes 112 and the plurality of positioning shaft holes 111 are uniformly and spacedly arranged on the axis of the heating platform unit 11.

[0048] Specifically, the connecting screw hole 112 is a T-shaped through hole, and the head of the platform connecting screw assembly 5 can be clamped in the T-shaped through hole, and the platform connecting screw assembly 5 can sequentially pass through the connecting screw hole 112, the heat preservation brick 2 and the water-cooled plate 3 from the top of the heating platform unit 11, so that the heating platform unit 11 can be connected with the water-cooled plate 3 through the connecting screw hole 112.

[0049] Further, the heating platform unit 11 further comprises a plurality of heating pipe passages 113 arranged along the length direction of the heating platform unit 11, for placing heating pipes.

[0050] Further, the heating platform unit 11 further comprises a plurality of ejector pin holes 114 arranged on the side of the heating platform unit 11 and unevenly arranged, so that different ejector pin holes 114 can cooperate with each other to eject different specifications of heating materials. In addition, since the ejector pin hole 114 extends and contracts from the middle to both ends of the heating platform unit 11 due to thermal expansion and contraction in the machining process, the diameter of the middle part of the ejector pin hole 114 is smaller than the diameter of both ends, and the diameter of the ejector pin is smaller than the diameter of the ejector pin hole 114, so that when the ejector pin hole 114 extends and contracts, the ejector pin can still pass through the ejector pin hole 114 to demold the raw material.

[0051] Further, the heat preservation brick 2 is used for heat transfer and heat preservation of the heating platform 1, and a plurality of through holes are arranged on the heat preservation brick 2, which are used for passing the positioning shaft 4 and the platform connecting screw assembly 5.

[0052] Further, the water-cooled plate 3 is provided with threaded holes and fixing holes, the threaded holes are used for fixing the positioning shaft 4, and the fixing holes are used for fixing the platform connecting screw assembly 5; the threaded holes and the fixing holes are uniformly and interval arranged, and correspond to the positioning shaft holes 111 and the connecting screw holes 112 on the heating platform.

[0053] Further, as shown in the figure, Figure 5 The positioning shaft 4 includes a positioning part 41, a hand screwing part 42 and a limiting part 43, the positioning part 41 is arranged at one end of the positioning shaft 4, the limiting part 43 is arranged at the other end of the positioning shaft 4, and the hand screwing part 42 is arranged on the shaft wall of the positioning shaft 4.

[0054] Specifically, the outer wall of the positioning part 41 is provided with threads, which are screwed with the threaded holes on the water-cooled plate 3 to realize the fixation of the positioning shaft 4 on the water-cooled plate 3.

[0055] The hand screwing part 42 is used for manually tightening or loosening the positioning shaft 4, and the hand screwing part 42 is provided with friction lines, which are used for increasing the friction between the hands of the operator and the hand screwing part 42 when the operator tightens or loosens the positioning shaft 4, so as to facilitate the tightening and loosening of the positioning shaft 4.

[0056] In addition, the limiting part 43 can be inserted into the positioning shaft hole 111 on the bottom of the heating platform 1 and can slide in the positioning shaft hole 111. The positioning shaft 4 and the plurality of positioning shaft holes 111 on the heating platform unit 11 can be used as a reference position when the heating platform 1 is installed, which increases the positioning basis when the heating platform is installed, and also improves the installation precision of the whole equipment. A slot is arranged on the limiting part 43, so that the positioning shaft 4 can also be tightened and loosened by using a slot screwdriver.

[0057] Further, as shown in the figure, Figures 6-7 The platform connecting screw assembly 5 includes a connecting bolt 51, a spherical washer 52, a spherical cap 53, a disc spring 54, a limiting nut 55 and a cover plate 56.

[0058] The spherical washer 52 is arranged in the T-shaped through hole of the connecting screw hole 112 of the heating platform unit 11 through the connecting bolt 51. Different from the prior art, the T-shaped through hole is provided with a spherical platform, and the spherical washer 52 is connected with the spherical platform of the T-shaped through hole, so that when the heating platform unit 11 moves, the connecting bolt 51 can realize the offset of any angle on the spherical platform of the T-shaped through hole through the spherical washer 52, thereby realizing the angle compensation of the connecting bolt 51 in the movement process of the heating platform unit 11.

[0059] Further, the fixing hole on the water cooling plate 3 is a hemispherical concave groove, the ball cap 53 is consistent with the curvature of the hemispherical concave groove, and the ball cap 53 can realize limited cooperation through the hemispherical concave groove. The ball cap 53 is sleeved on the connecting bolt 51, the limiting nut 55 is arranged below the ball cap 53 and is screw-connected with the connecting bolt 51, and the disc spring 54 is arranged between the limiting nut 55 and the ball cap 53, wherein the compression elongation degree of the disc spring 54 is determined by the limiting nut 55 and the ball cap 53 clamped in the hemispherical concave groove. A cover plate 56 is further arranged, and the cover plate 56 is fixedly arranged at the bottom of the water cooling plate 3, and the limiting nut 55 can be clamped with the cover plate 56.

[0060] It is worth noting that the disc spring 54 is pre-compressed by the limiting nut 55 at room temperature, and the water cooling plate 3 is indirectly pressed against the hemispherical concave groove through the disc spring 54 and the ball cap 53, so that the platform connecting screw assembly 5 has sufficient pre-tightening tension on the heating platform unit 11, thereby limiting the displacement of the heating platform unit 11 through the pre-tightening tension.

[0061] During the heating process, the connecting bolt 51 in the platform connecting screw assembly 5 will be lengthened due to high temperature expansion, at this time, the ball cap 53 sleeved on the connecting bolt 51 and the disc spring 54 between the limiting nut 55 screw-connected on the connecting bolt 51 will be elastically elongated due to the lengthening of the connecting bolt 51, thereby compensating for the lengthening of the connecting bolt 51, and at the same time, the heating platform unit 11 can still realize the limitation and constraint force on its displacement through the tension of the disc spring 54.

[0062] At the same time, due to the elongation of the heating platform unit 11, the connecting bolt 51 connected to the heating platform unit 11 is inclined, the upper end of the connecting bolt 51 realizes angle compensation through the rotation of the spherical washer 52, and the lower end realizes angle compensation through the rotation of the ball cap 53, thereby avoiding the deformation of the connecting bolt 51, the ball cap 53 and the limiting nut 55.

[0063] Compared with the prior art, the heating platform limiting and guiding device of the thermoforming machine is suitable for realizing the basic positioning of the heating platform 1 through the positioning shaft 4 and the positioning shaft hole 111 on the heating platform unit 11, and most importantly, realizing the guiding and limiting effect of the heating platform 1 under the action of heat extension through the sliding cooperation between the positioning shaft 4 and the positioning shaft hole 111. In addition, the heating platform limiting and guiding device also realizes the connection and fixation of the heating platform 1, the heat preservation brick 2 and the water cooling plate 3 through the platform connecting screw assembly 5, and more importantly, realizes the pre-tightening tension of the heating platform 1, the heat preservation brick 2 and the water cooling plate 3 through the disc spring 54, and can also compensate for the elongation change of the platform connecting screw assembly 5 caused by high temperature expansion.

[0064] The application realizes the single dimension elongation and shortening deformation of the heating platform 1 through the cooperation of the positioning shaft 4 and the platform connecting screw assembly 5, avoids the problem that the heating platform 1 is easily deviated in position when affected by the lateral force due to the thermal deformation, and ensures the stability of the whole equipment operation.

[0065] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A limiting and guiding device for a heating platform of a thermoforming machine, characterized in that, It comprises a heating platform (1), a heat preservation brick (2), a water cooling plate (3), a positioning shaft (4) and a platform connecting screw assembly (5); The heating platform (1) comprises a plurality of heating platform units (11); the heating platform unit (11) comprises a positioning shaft hole (111) and a connecting screw hole (112), a plurality of positioning shaft holes (111) are provided, and the plurality of positioning shaft holes (111) are uniformly arranged on the axis of the heating platform unit (11); the positioning shaft hole (111) in the middle of the heating platform unit (11) is circular, the diameter of the circular positioning shaft hole (111) is equal to the diameter of the positioning shaft (4); the circular positioning shaft hole (111) is taken as a reference, and an elliptical positioning shaft hole (111) with gradually increasing length is sequentially arranged at both ends of the heating platform unit (11) along the length direction of the heating platform unit (11), the length direction of the elliptical positioning shaft hole (111) is the same as the length direction of the heating platform unit (11), and the width of the elliptical positioning shaft hole (111) is equal to the diameter of the positioning shaft (4); The heat preservation brick (2) is arranged on the water cooling plate (3), and the heating platform (1) is arranged on the heat preservation brick (2); the positioning shaft (4) is inserted into the bottom of the heating platform (1) and passes through the heat preservation brick (2) to be fixed on the water cooling plate (3), so as to realize the guiding effect of the heating platform (1); the platform connecting screw assembly (5) passes through the heating platform (1) and the heat preservation brick (2) to be installed on the water cooling plate (3), so as to realize the limiting effect of the heating platform (1); the water cooling plate (3) is provided with a threaded hole and a fixing hole; The platform connecting screw assembly (5) comprises a connecting bolt (51), a spherical washer (52), a ball cap (53), a disc spring (54), a limiting nut (55) and a cover plate (56); the spherical washer (52) is arranged in the T-shaped through hole of the connecting screw hole (112) of the heating platform unit (11) through the connecting bolt (51); the T-shaped through hole is provided with a spherical platform, and the spherical washer (52) is connected with the spherical platform of the T-shaped through hole in a matched mode; The fixing hole of the water cooling plate (3) is a hemispherical concave groove, the ball cap (53) is consistent with the arc of the hemispherical concave groove, and the ball cap (53) can realize limiting matching through the hemispherical concave groove; the ball cap (53) is sleeved on the connecting bolt (51), the limiting nut (55) is arranged below the ball cap (53) and is screwed with the connecting bolt (51), the disc spring (54) is arranged between the limiting nut (55) and the ball cap (53), the compression and elongation degree of the disc spring (54) is determined by the limiting nut (55) and the ball cap (53) clamped in the hemispherical concave groove; the cover plate (56) is fixedly arranged at the bottom of the water cooling plate (3), and the limiting nut (55) can be clamped with the cover plate (56).

2. A heating platform limiting guide device for a thermoforming machine according to claim 1, characterized in that, The plurality of heating platform units (11) are arranged in parallel with each other.

3. A heating platform limiting guide device for a thermoforming machine according to claim 1, characterized in that, The positioning shaft hole (111) is a blind hole arranged at the bottom of the heating platform unit (11).

4. The heating platform limiting guide device for a thermoforming machine according to claim 1, wherein, The connecting screw hole (112) is provided with a plurality of.

5. A heating platen positioner for a thermoforming machine as defined in claim 4, wherein, The plurality of connecting screw holes (112) and the plurality of positioning shaft holes (111) are uniformly arranged on the axis of the heating platform unit (11).

6. A heating platform limiting guide device for a thermoforming machine according to claim 2 or 3, characterized in that, The heating platform unit (11) further comprises a heating pipe passage (113) for placing a heating pipe.

7. A heating platen positioner for a thermoforming machine as claimed in any one of claims 2 or 3, wherein, The heating platform unit (11) further comprises a top rod hole (114) for the top rod.

Images