An anti-overflow device for foaming in the production of air conditioning insulation boards

Abstract

The application discloses a kind of overflow prevention devices of air conditioner insulation board production foaming, specifically relates to the technical field of foaming production equipment, including upper die, lower die, floating ring, annular rubber pad;Drive column, drive column is slid freely and is worn out upper die;Driving mechanism, driving mechanism is used to be elastically resisted and top drive column after upper die, lower die closing die.The lower end surface of annular rubber pad will be resisted with the top surface of lower die when upper die and lower die are closed, and then the abutting surface of upper die and lower die is sealed, and driving mechanism is additionally provided, driving mechanism will generate downward elastic resistance force to drive column during closing die process, so that annular rubber pad maintains the resistance force of the top surface of lower die, so that the lower end surface of annular rubber pad always maintains the abutting state with the top surface of lower die under the elastic resistance of driving mechanism when annular rubber pad is aged and worn, and continues to play the sealing effect of the abutting surface of upper die and lower die.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of foaming production equipment, and more particularly to a foaming overflow prevention device for air conditioner insulation board production. BACKGROUND

[0002] The mold for foaming molding is a plastic foaming mold. Foaming resin is directly filled into the mold, heated and melted to form a gas-liquid saturated solution. A large number of small bubble nuclei are formed through nucleation, and the bubble nuclei grow to form a foamed plastic part. There are three common foaming methods: physical foaming, chemical foaming and mechanical foaming.

[0003] At present, when the air conditioner insulation board is foamed and produced, the foaming mold is closed. When the closing pressure is unstable or the mold is severely worn, the sealing effect of the abutting surface of the mold decreases, which may cause overflow of the mold abutting surface during foaming. Workers need to cut off the burrs formed by overflow, thereby reducing the processing efficiency. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the embodiments of the present application provide a foaming overflow prevention device for air conditioner insulation board production. The technical problem to be solved by the present application is that the foaming mold for air conditioner insulation board in the prior art may cause overflow.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a foaming overflow prevention device for air conditioner insulation board production, comprising an upper mold and a lower mold of a foaming machine, the opposite surfaces of the upper mold and the lower mold are respectively provided with an upper mold cavity and a lower mold cavity, and further comprising:

[0006] A floating ring is fitted in the annular mounting cavity of the upper mold, and the floating ring freely slides up and down in the annular mounting cavity;

[0007] An annular rubber pad is coaxially connected to the lower end surface of the floating ring, and the bottom surface thereof is flush with the bottom surface of the upper mold;

[0008] A plurality of drive columns are vertically fixed to the floating ring, and the drive columns freely slide out of the upper mold;

[0009] A driving mechanism is used to elastically abut against the drive column downward after the upper mold and the lower mold are closed.

[0010] Further, the driving mechanism comprises:

[0011] A connecting seat is coaxially fixed to the top of the upper mold, and a top plate is fixed to the top of the connecting seat;

[0012] An elastically deformed sleeve is fixedly connected to the lower end surface of the top plate and coaxial with the connecting seat, the outer diameter of the elastically deformed sleeve decreases from top to bottom, a strip-shaped notch is formed in the periphery of the elastically deformed sleeve, the strip-shaped notch divides the elastically deformed sleeve into a plurality of elastically deformed petals, the number of the elastically deformed petals corresponds to the number of the driving columns, and the periphery of the elastically deformed petals abuts against the top end of the driving columns.

[0013] Further, a roller is rotatably connected to the top of the driving column, and the roller is in rolling contact with the periphery of the elastically deformed petals.

[0014] Further, a limiting ring is sleeved on the upper end of the driving column, and a spring is wound around the driving column, and the spring is elastically abutted against the limiting ring and the lower mold at the two ends of the spring elastic force direction.

[0015] Further, a plurality of ear plates are fixedly connected to the top plate, a plurality of guide columns are vertically fixedly connected to the periphery of the lower mold, the ear plates correspond to the guide columns in position and number, and a through hole is formed in the ear plate for the guide column to freely pass through.

[0016] Further, a fixed block is fixedly connected to the lower end surface of the ear plate, a sliding column is horizontally penetrated through the fixed block, the sliding column freely slides horizontally on the fixed block, a connecting block is fixedly connected to one end of the sliding column which faces the guide column, a through slot is formed in the guide column for the connecting block to freely move, a sliding pin is horizontally penetrated through the connecting block, and a special-shaped slot is formed in the guide column, the special-shaped slot sequentially includes a straight slot and an inclined slot from top to bottom, the lower end of the straight slot is connected with the upper end of the inclined slot, and the lower end of the inclined slot extends obliquely to the outside of the lower mold.

[0017] Further, a ring-shaped protruding part is integrally connected to the upper end surface of the annular rubber pad, and a ring-shaped mounting slot is formed in the lower end surface of the floating ring for the ring-shaped protruding part to be tightly fitted and mounted.

[0018] Further, a plurality of protrusions are fixedly connected to the lower end surface of the annular rubber pad, the positions and number of the protrusions correspond to the positions and number of the driving columns, and a positioning slot is formed in the top surface of the lower mold for the protrusions to be clamped.

[0019] Further, a liquid storage cavity is formed in the driving column, heat-conducting oil is stored in the liquid storage cavity, and a piston is clamped in the liquid storage cavity, a abutting pin is fixedly connected to the lower end surface of the piston, an installation hole is formed in the annular rubber pad for the abutting pin to be inserted, and the installation hole corresponds to the protrusion.

[0020] Further, a tension spring is vertically installed in the liquid storage cavity, and the two ends of the tension spring are fixedly connected to the piston and the top wall in the liquid storage cavity, respectively.

[0021] The technical effects and advantages of the present application are as follows:

[0022] By setting the annular rubber pad and the driving column, when the upper mold and the lower mold are closed, the lower end face of the annular rubber pad will abut against the top surface of the lower mold, thereby sealing the abutting surface of the upper mold and the lower mold. In addition, the driving mechanism is provided, which will generate a downward elastic abutting force on the driving column during the closing process, so that the annular rubber pad maintains the abutting force on the top surface of the lower mold. In this way, when the annular rubber pad is worn out, the lower end face of the annular rubber pad always maintains the abutting state with the top surface of the lower mold under the elastic abutting of the driving mechanism, and continues to play the sealing effect on the abutting surface of the upper mold and the lower mold.

[0023] By setting the elastic deformation sleeve, the elastic lobe on the elastic deformation sleeve has a downward elastic abutting force on the top of the driving column. In addition, the sliding pin is set to slide in the special-shaped groove. When the sliding pin slides in the straight groove of the special-shaped groove, the upper mold and the lower mold are not in the closed position. The sliding pin moves the driving connecting block to the inside of the upper mold, thereby causing the fixed block to press the elastic lobe, so that the elastic lobe is in a contracted state, thereby causing the downward elastic abutting force of the elastic lobe on the driving column to disappear. The spring has an upward elastic abutting force on the limiting ring, so that the bottom surface of the annular rubber pad is flush with the bottom surface of the upper mold. When the mold is closed, the sliding pin slides from the straight groove to the inclined groove, thereby causing the fixed block to move away from the elastic lobe, so that the elastic lobe changes from the elastic contraction state to the elastic expansion state, and generates a downward elastic abutting force on the top of the driving column. In this way, the annular rubber pad maintains the extrusion force on the top surface of the lower mold when the mold is closed, thereby improving the sealing effect. When the mold is not closed, the lower end face of the annular rubber pad will not protrude to the outside of the upper mold, thereby avoiding the attachment of foreign matter to the annular rubber pad or causing damage to the annular rubber pad.

[0024] By setting the protrusion and the positioning groove, after the mold is closed, the protrusion will be clamped into the positioning groove, thereby avoiding the deformation of the annular rubber pad to the outside of the lower mold due to the extrusion of the foaming material. In addition, when the heat generated during foaming is transferred to the heat-conducting oil in the liquid storage cavity, the volume of the heat-conducting oil expands and drives the piston to move downward, so that the abutting pin extrudes the part of the annular rubber pad corresponding to the protrusion, so that the protrusion can be tightly clamped in the positioning groove, thereby improving the limiting effect of the annular rubber pad. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The structure of the present application is a schematic diagram of a foaming overflow prevention device for producing an air conditioner insulation board.

[0026] Figure 2 The structure of the present application is a schematic diagram of a foaming overflow prevention device for producing an air conditioner insulation board. Figure 1 The structure of the present application is a schematic diagram of a foaming overflow prevention device for producing an air conditioner insulation board.

[0027] Figure 3 The structure of the present application is a schematic diagram of a foaming overflow prevention device for producing an air conditioner insulation board. Figure 2 The structure of the present application is a schematic diagram of a foaming overflow prevention device for producing an air conditioner insulation board.

[0028] Figure 4 This is a schematic diagram of the lower mold in this invention;

[0029] Figure 5 This is a schematic diagram of the structure of the upper mold, connecting seat and top plate after assembly in this invention;

[0030] Figure 6 for Figure 5 A schematic diagram of the structure viewed from below;

[0031] Figure 7 for Figure 5 A schematic diagram of the central structure from the front view angle;

[0032] Figure 8 This is a schematic diagram of the structure of the floating ring, annular rubber pad and drive column after assembly in this invention;

[0033] Figure 9 for Figure 8 A schematic diagram of the structure viewed from below;

[0034] Figure 10 for Figure 8 A cross-sectional view of the middle section of the structure;

[0035] Figure 11 for Figure 10 An enlarged schematic diagram of the local structure at point A in the middle.

[0036] The attached figures are labeled as follows: 1. Top plate; 2. Straight groove; 3. Through groove; 4. Ear plate; 5. Guide post; 6. Fixing block; 7. Connecting seat; 8. Elastic deformation sleeve; 9. Upper mold; 10. Lower mold; 11. Inclined groove; 12. Sliding pin; 13. Sliding post; 14. Lower mold cavity; 15. Upper mold cavity; 16. Floating ring; 17. Annular rubber pad; 18. Roller; 19. Spring; 20. Drive post; 21. Limiting ring; 22. Protrusion; 23. Annular protrusion; 24. Abutment pin; 25. Tension spring; 26. Liquid storage cavity; 27. Piston; 28. Annular mounting groove; 29. ​​Annular mounting cavity; 30. Strip notch; 31. Positioning groove. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] like Figures 1-11As shown, the embodiment discloses a kind of air conditioner insulation board production foaming's anti-overflow device, including the upper die 9 and lower die 10 of foaming machine, coaxially welded with connecting seat 7 on the top surface of upper die 9, top plate 1 is welded on the top of connecting seat 7, top plate 1 is connected with the hydraulic lifting device on foaming machine, top plate 1 is driven to move up and down by hydraulic lifting device, in turn make upper die 9 and lower die 10 can be closed, the opposite surface of upper die 9, lower die 10 is respectively provided with upper die cavity 15 and lower die cavity 14, the profile of upper die cavity 15, lower die cavity 14 is matched with the shape profile of air conditioner insulation board, in the embodiment, the size, profile of upper die cavity 15 and lower die cavity 14 are not specifically limited, in addition, annular mounting cavity 29 is coaxially provided on the bottom surface of upper die 9, floating ring 16 that can freely slide up and down is clamped in annular mounting cavity 29, floating ring 16 is made of metal material, in addition, annular mounting groove 28 is coaxially provided on the lower end surface of floating ring 16, annular protruding portion 23 is tightly fitted in annular mounting groove 28, annular protruding portion 23 is integrally connected with annular rubber pad 17 on the lower end surface, annular rubber pad 17 is clamped in annular mounting cavity 29, and can freely slide up and down, in addition, annular rubber pad 17 and annular protruding portion 23 are made of high-temperature-resistant rubber material, in the embodiment, the sum of thickness size of floating ring 16 and annular rubber pad 17 is consistent with the depth size of annular mounting cavity 29, in turn, the bottom surface of floating ring 16 is flush with the bottom surface of upper die 9 in natural state;

[0039] When closed, hydraulic lifting device drives top plate 1 to move downwards, in turn, upper die 9 and lower die 10 are closed, after closed in place, the lower end surface of annular rubber pad 17 abuts tightly with the top surface of lower die 10, in turn, the abutting surface of upper die 9 and lower die 10 is sealed;

[0040] In addition, four ear plates 4 are arrayed and welded on the circumference of top plate 1 along its axial direction, four fixed plates are welded on the circumference of lower die 10, each fixed plate and ear plate 4 are in corresponding state, in addition, guide column 5 is vertically welded on fixed plate, guide column 5 penetrates ear plate 4, perforation is provided on ear plate 4, which forms sliding fit with guide column 5, through the cooperation of guide column 5 and perforation, the closing process of upper die 9 and lower die 10 has guide when closing;

[0041] Since after the mold is closed, the foaming material may enter the abutting surface of the upper mold 9 and the lower mold 10 when the foaming material is foamed at high temperature, although the annular rubber pad 17 can prevent the foaming material from overflowing, the annular rubber pad 17 may be worn out after long-term use, resulting in a decrease in the sealing effect on the abutting surface of the upper mold 9 and the lower mold 10, therefore, in order to keep the annular rubber pad 17 sealed to the top surface of the lower mold 10, in the embodiment, four driving columns 20 are vertically welded on the upper end surface of the floating ring 16, the driving columns 20 pass through the upper mold 9 and can freely slide up and down, in addition, the end of the driving column 20 passing through the upper mold 9 is sleeved with a limiting ring 21, a spring 19 is sleeved around the driving column 20, the spring 19 has an upward elastic abutting force on the driving column 20, so that the floating ring 16 drives the annular rubber pad 17 to retract into the annular mounting cavity 29, so that the lower end surface of the annular rubber pad 17 is flush with the bottom surface of the upper mold 9, in addition, the upper end of the driving column 20 is rotationally connected with a roller 18, the lower end surface of the top plate 1 is coaxially welded with an elastic deformation sleeve 8, the elastic deformation sleeve 8 is coaxial with the connecting seat 7, in addition, the material of the elastic deformation sleeve 8 can be selected from spring steel materials such as 65Mn, the outer diameter of the elastic deformation sleeve 8 decreases from top to bottom, four strip-shaped notches 30 are formed in the periphery of the elastic deformation sleeve 8, the elastic deformation sleeve 8 is divided into four elastic lobe bodies by the four strip-shaped notches 30, the number of the elastic lobe bodies corresponds to the number of the driving columns 20, the periphery of the elastic lobe body abuts against the top end of the driving column 20, and the roller 18 is in rolling contact with the periphery of the elastic lobe body;

[0042] Since the elastic lobe body is in an elastic expansion state in a natural state, the periphery of the elastic lobe body and the roller 18 will move relatively, that is, the roller 18 will roll on the periphery of the elastic lobe body and generate a downward elastic abutting force on the driving column 20, and then after the upper mold 9 and the lower mold 10 are closed in place, the driving column 20 has a downward extrusion force on the floating ring 16, so that the floating ring 16 drives the annular rubber pad 17 to extrude the top surface of the lower mold 10 downward, so that the annular rubber pad 17 is tightly attached to the top surface of the lower mold 10;

[0043] Since the mold is closed, the annular rubber pad 17 needs to be retracted into the annular mounting cavity 29 to ensure that the lower end surface of the annular rubber pad 17 is at least flush with the bottom surface of the upper mold 9, so as to avoid foreign matter adhering to the annular rubber pad 17 and affecting the sealing effect of the annular rubber pad 17 on the top surface of the lower mold 10 after the mold is closed. In addition, if the bottom surface of the annular rubber pad 17 is exposed below the bottom surface of the upper mold 9 for a long time, it may be in rigid contact with other objects during the operation of the workers, which may cause damage to the surface of the annular rubber pad 17. Therefore, in the embodiment, a fixed block 6 is welded on the bottom surface of the lug plate 4, a through slot with a rectangular longitudinal section is formed in the fixed block 6, a sliding column 13 is slidably arranged in the through slot, the sliding column 13 can freely slide horizontally in the through slot, and a connecting block is welded or integrally connected to one end of the sliding column 13 towards the guide column 5. The guide column 5 is provided with a through slot 3 for the free movement of the connecting block, and a sliding pin 12 is horizontally arranged in the connecting block. The guide column 5 is provided with a special-shaped slot for the insertion of the sliding pin 12, and the special-shaped slot includes a straight slot 2 and an inclined slot 11 from top to bottom. The lower end of the straight slot 2 is connected with the upper end of the inclined slot 11, and the lower end of the inclined slot 11 extends obliquely towards the outside of the lower mold 10;

[0044] When the mold is not closed, the upper mold 9 and the lower mold 10 are in a separated state, and the sliding pin 12 is inserted into the straight slot 2. At this time, the other end of the sliding column 13 will abut against the elastic lobe of the elastically deformed sleeve 8, so that the elastic lobe is subjected to a pressing force towards the inside of the upper mold 9, and then is in an elastically contracted state. This makes the periphery of the elastic lobe separate from the rolling contact with the roller 18, so that the driving column 20 moves upwards under the elastic abutting force of the spring 19, and then the floating ring 16 and the annular rubber pad 17 retract into the annular mounting cavity 29. During the closing of the mold, the sliding pin 12 will slide from the straight slot 2 to the inclined slot 11. Since the lower end of the inclined slot 11 extends towards the outside of the upper mold 9, the sliding pin 12 will pull the sliding column 13 to slide towards the outside of the upper mold 9. Thus, the pressing force of the sliding column 13 on the elastic lobe disappears, and the elastic lobe will change from the elastically contracted state to the elastically expanded state. After the elastic lobe expands to a certain extent (without reaching the maximum elastic expansion extent), the periphery of the elastic lobe will press the roller 18, and then the roller 18 will generate an elastic abutting force downwards on the driving column 20, so that the driving column 20 drives the floating ring 16 and the annular rubber pad 17 to move downwards. Thus, after the mold is closed, the annular rubber pad 17 is subjected to the elastic pressing force of the elastic lobe on the driving column 20, and then maintains the pressing force on the top surface of the lower mold 10, so as to achieve a better sealing effect on the abutting surface of the upper mold 9 and the lower mold 10;

[0045] Since the foaming material may enter the abutting surface of the upper mold 9 and the lower mold 10 under the action of high temperature and high pressure during foaming, and an action force towards the outside of the lower mold 10 is generated on the annular rubber pad 17, and the annular rubber pad 17 may be deformed, in order to keep the annular rubber pad 17 in a good profile and reduce the influence on the sealing effect, four protrusions 22 are integrally formed on the lower end surface of the annular rubber pad 17 in the embodiment, the positions and the number of the protrusions 22 correspond to the positions and the number of the driving columns 20, the top surface of the lower mold 10 is provided with positioning grooves 31 for clamping the protrusions 22, in addition, the driving columns 20 are provided with liquid storage cavities 26, the liquid storage cavities 26 store heat conducting oil, and the heat conducting oil is clamped with a piston 27, the lower end surface of the piston 27 is welded with a stop pin 24, the annular rubber pad 17 is provided with mounting holes for inserting the stop pin 24, the mounting holes correspond to the protrusions 22, the liquid storage cavities 26 are vertically provided with tension springs 25, and the two ends of the tension springs 25 are fixed to the piston 27 and the inner top wall of the liquid storage cavities 26 respectively.

[0046] When the high temperature during foaming is transferred to the liquid storage cavities 26, the heat conducting oil is heated and expands in volume, and then drives the piston 27 to slide downwards, when the piston 27 slides downwards, the stop pin 24 is driven to move downwards at the same time, so that the stop pin 24 extrudes the inner wall of the mounting hole, and the protrusions 22 correspond to the mounting holes, so that the extrusion force of the stop pin 24 on the inner bottom wall of the mounting hole acts on the protrusions 22, so that the protrusions 22 are tightly clamped in the positioning grooves 31, so that the annular rubber pad 17 still maintains a complete profile to a certain extent when being extruded by the foaming material, and the sealing effect of the annular rubber pad 17 is avoided to be affected, and after the foaming is completed, the temperature of the heat conducting oil decreases after the material is cooled, at this time, the piston 27 is pulled by the tension spring 25, so that the stop pin 24 is driven to move upwards, and then the extrusion force of the stop pin 24 on the inner bottom wall of the mounting hole disappears, so that the deformation of the protrusions 22 is avoided.

[0047] The working principle of the present application is as follows: the foaming material of the air-conditioning insulation board is put into the lower die cavity 14, and then the external hydraulic lifting device is started, the hydraulic lifting device drives the top plate 1 to move downward, and then the upper die 9 and the lower die 10 are closed, during the closing process, the sliding pin 12 will slide from the straight groove 2 to the inclined groove 11, because the lower end of the length direction of the inclined groove 11 extends to the outside of the upper die 9, so the sliding pin 12 will pull the sliding column 13 to slide to the outside of the upper die 9, so that the elastic valve body is subjected to the extrusion force of the sliding column 13, and the elastic valve body will be converted from the elastic contraction state to the elastic expansion state, after the elastic expansion to a certain extent (not reaching the maximum elastic expansion extent), the periphery of the elastic valve body will extrude the roller 18, and then the roller 18 will generate an elastic abutting force downward on the driving column 20, so that the driving column 20 drives the floating ring 16 and the annular rubber pad 17 to move downward, so that after the closing is completed, the annular rubber pad 17 is subjected to the elastic extrusion force of the driving column 20, and then the lower die 10 top surface is subjected to the extrusion force, when the upper die 9 and the lower die 10 are closed, the annular rubber pad 17 generates a good sealing effect on the abutting surface of the upper die 9 and the lower die 10, and when the high temperature during foaming is transferred to the liquid storage cavity 26, the heating effect of the heat conducting oil is generated, the heat conducting oil is expanded in volume, and then the piston 27 is driven to slide downward, when sliding downward, the synchronous belt drives the abutting pin 24 to move downward, so that the abutting pin 24 extrudes the inner wall of the mounting hole, and the protrusion 22 corresponds to the mounting hole, so that the extrusion force of the abutting pin 24 on the inner bottom wall of the mounting hole acts on the protrusion 22, so that the protrusion 22 is tightly clamped in the positioning groove 31, so that when the annular rubber pad 17 is subjected to the extrusion force of the foaming material, it still maintains the complete profile to a certain extent, avoiding affecting the sealing effect of the annular rubber pad 17, and after the foaming is completed, the material cools down, and the temperature of the heat conducting oil decreases, at this time, the tension spring 25 pulls the piston 27, so that the piston 27 drives the abutting pin 24 to move upward, and then the extrusion force of the abutting pin 24 on the inner bottom wall of the mounting hole disappears, avoiding the deformation of the protrusion 22.

[0048] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0049] Secondly: the present application discloses the structure involved in the embodiment of the present application, other structures can refer to the usual design, in the case of no conflict, the same embodiment and different embodiments of the present application can be combined with each other;

[0050] Finally: the above only for the preferred embodiments of the present application, and not for limiting the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the scope of protection of the present application.

Claims

1. An anti-overflow device for producing foamed air conditioning insulation boards, comprising an upper mold and a lower mold of a foaming machine, the opposite faces of the upper mold and the lower mold being respectively provided with an upper mold cavity and a lower mold cavity, characterized in that, Also include: Floating ring, floating ring is engaged in the ring-shaped installation cavity opened by the upper die, the floating ring freely slides in the ring-shaped installation cavity; Annular rubber pad, annular rubber pad coaxially connected to the lower end surface of the floating ring, and its bottom surface is flush with the bottom surface of the upper die; A plurality of drive columns, a plurality of drive columns are vertically fixed to the floating ring, and the drive columns pass through the upper die and freely slide; Driving mechanism, driving mechanism is used for elastically abutting the drive column downward after the upper die and the lower die are closed; Driving mechanism includes: Connecting seat, connecting seat is coaxially fixed to the top of the upper die, and the top of the connecting seat is fixedly connected with a top plate; Elastic deformation sleeve, elastic deformation sleeve is fixedly connected to the lower end surface of the top plate, and is coaxial with the connecting seat, the outer diameter of the elastic deformation sleeve decreases from top to bottom, the periphery of the elastic deformation sleeve is provided with a strip-shaped notch, the strip-shaped notch divides the elastic deformation sleeve into a plurality of elastic petals, the number of the elastic petals corresponds to the number of the drive columns, and the periphery of the elastic petals abuts against the top end of the drive column; The top plate is fixedly connected with a plurality of ear plates, the lower die is vertically fixedly connected with a plurality of guide columns around the periphery, the ear plates correspond to the positions and numbers of the guide columns, and the ear plates are provided with through holes for the guide columns to freely pass through; The lower end surface of the ear plate is fixedly connected with a fixed block, the fixed block is horizontally provided with a sliding column, the sliding column freely slides on the fixed block, one end of the sliding column towards the guide column is fixedly connected with a connecting block, the guide column is provided with a through slot for the connecting block to freely move, the connecting block is horizontally provided with a sliding pin, the guide column is provided with a special-shaped slot, the special-shaped slot includes a straight slot and an inclined slot from top to bottom, the lower end of the straight slot is communicated with the upper end of the inclined slot, and the lower end of the inclined slot extends obliquely to the outside of the lower die; The lower end surface of the annular rubber pad is fixedly connected with a plurality of protrusions, the positions and numbers of the protrusions correspond to the positions and numbers of the drive columns, and the top surface of the lower die is provided with positioning grooves for the protrusions to engage; The drive column is provided with a liquid storage cavity, the liquid storage cavity stores heat-conducting oil, and a piston is engaged in the liquid storage cavity, the lower end surface of the piston is fixedly connected with an abutting pin, the annular rubber pad is provided with a mounting hole for the abutting pin to insert, and the mounting hole corresponds to the protrusion.

2. The overflow prevention device for producing a foamed air conditioning insulation board according to claim 1, wherein The top of the drive column is rotatably connected with a roller, and the roller rolls in contact with the periphery of the elastic petals.

3. The overflow prevention device for producing a foamed air conditioning insulation board according to claim 1, wherein The upper end of the drive column is sleeved with a limiting ring, and a spring is wound around the drive column, and the spring force direction two ends are elastically abutted against the limiting ring and the lower die respectively.

4. The overflow prevention device for producing a foamed air conditioning insulation board according to claim 1, wherein The upper end surface of the annular rubber pad is coaxially and integrally connected with an annular protruding part, and the lower end surface of the floating ring is provided with an annular installation groove for tightly fitting the annular protruding part.

5. The overflow preventing device for producing a foamed air conditioning insulation board according to claim 1, wherein A tension spring is vertically installed in the liquid storage cavity, and the two ends of the tension spring are fixedly connected to the piston and the top wall in the liquid storage cavity respectively.

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