Polyimide foam material molding equipment

Abstract

The utility model discloses polyimide foam material molding equipment. The polyimide foam material molding equipment comprises an operation table, a powder conveying device, a lower mold, an upper mold and a feeding assembly located between the upper mold and the lower mold, a powder conveying pipe is arranged on the powder conveying device; the feeding assembly comprises sliding rails located on the two sides of the upper end of the lower die, a longitudinal driving assembly arranged on the sliding rails and a transverse driving assembly connected into the sliding rails in a sliding mode. The longitudinal driving assembly is used for driving the transverse driving assembly to conduct longitudinal displacement relative to the length direction of the lower die, and the transverse driving assembly is used for driving the material pipe mounting piece to conduct transverse displacement relative to the width direction of the lower die. By arranging the feeding assembly, the polyimide foaming material can be uniformly laid in the lower mold, and the laying uniformity of the polyimide foaming material on the lower mold is improved, so that the product quality of the polyimide foaming material is improved, and meanwhile, the automation degree of production is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to polyimide foaming equipment technical field especially relates to a kind of polyimide foam material moulding equipment. BACKGROUND

[0002] Polyimide foam is more and more widely used as the key material of heat insulation, shock absorption and noise reduction and insulation in aerospace, ocean transport, national defense and microelectronics and other high-tech fields due to its excellent performance. Nowadays, the preparation method of polyimide foam material is gradually optimized, and the traditional preparation method is divided into solution condensation method and powder method.

[0003] The powder method for preparing polyimide foam process is divided into powder preparation and foaming forming two parts, the first step is to react aromatic dianhydride or its derivative with diamine in solution to generate polyimide acid, and polyimide acid powder is obtained after removing the solvent, the second step is to place the powder in the mold and heat foaming to prepare polyimide foam.

[0004] In the preparation process, the powder is usually manually coated in the mold of the molding equipment by the staff, and the uniformity of the powder in the mold is easily caused by human placement, which leads to inconsistent local density after material foaming, thereby affecting the final performance of the material, therefore, a new scheme needs to be proposed to solve these problems. SUMMARY

[0005] The utility model overcomes the insufficient prior art, provides a kind of polyimide foam material moulding equipment, with the advantages of high degree of automation, polyimide foaming uniformity is strong.

[0006] To achieve the above object, the utility model adopts the technical scheme of: a kind of polyimide foam material moulding equipment, comprising: operation platform, the powder conveying device of being set in the operation platform one side, the lower mold in the operation platform upper end, the upper mold in the lower mold upper end, and the feeding assembly between the upper mold and the lower mold;The powder conveying device is provided with powder conveying pipe;

[0007] The feeding assembly includes: sliding rail on both sides of the lower mold upper end, longitudinal drive assembly arranged on the sliding rail, and transverse drive assembly slidingly connected in the sliding rail;

[0008] The longitudinal drive assembly includes: longitudinal screw rod rotatably connected to the sliding rail, longitudinal drive motor arranged in the operation platform interior for driving the longitudinal screw rod to rotate, and longitudinal driving part slidingly connected to one side of the longitudinal screw rod;

[0009] The transverse driving assembly comprises a transverse driving motor fixedly connected with the longitudinal driving member, a transverse threaded rod connected with the transverse driving motor through a bevel gear set, and a material pipe mounting member slidingly connected with the transverse threaded rod.

[0010] The material pipe mounting member is used for mounting a fixed powder conveying pipe, the longitudinal driving assembly is used for driving the transverse driving assembly to longitudinally displace relative to the length direction of the lower mold, and the transverse driving assembly is used for driving the material pipe mounting member to transversely displace relative to the width direction of the lower mold.

[0011] In a preferred embodiment of the present application, the longitudinal threaded rod and the transverse threaded rod are both provided with a threaded groove, the longitudinal driving member is fixedly connected with a longitudinal driving block corresponding to the threaded groove on the sliding surface of the longitudinal threaded rod, and the material pipe mounting member is fixedly connected with a transverse driving block corresponding to the threaded groove on the sliding surface of the transverse threaded rod.

[0012] In a preferred embodiment of the present application, the longitudinal driving block and the transverse driving block are both spherical bodies matched with the threaded groove.

[0013] In a preferred embodiment of the present application, the transverse threaded rod is provided with a sliding block fixedly connected with the longitudinal driving member at each end, and the sliding block is slidingly connected in the sliding rail.

[0014] In a preferred embodiment of the present application, the longitudinal driving members on both sides are fixedly connected with a limiting rod, and the limiting rod is arranged in parallel with the transverse threaded rod.

[0015] In a preferred embodiment of the present application, the material pipe mounting member comprises a transverse driving member slidingly connected with the transverse threaded rod, and a limiting block fixedly connected on the outer surface of the transverse driving member and slidingly connected with the limiting rod.

[0016] In a preferred embodiment of the present application, the material pipe mounting member further comprises a material pipe mounting plate fixedly connected with the transverse driving member on the side facing the lower mold through a connecting member.

[0017] In a preferred embodiment of the present application, the elastic strip is made of natural rubber.

[0018] In a preferred embodiment of the present application, the powder conveying pipe is a PVC pipe.

[0019] The present application solves the defects in the background art and has the following beneficial effects:

[0020] (1) The utility model discloses a set up loading assembly, utilize longitudinal drive assembly and transverse drive assembly, and the polyimide foaming material moves regularly along the length and width direction of lower mould, and it is evenly laid on lower mould, improve the uniformity of polyimide foaming material in lower mould, to improve the uniformity of polyimide foaming product density, greatly improve the product quality, and improve the automation degree of foaming process.

[0021] (2) The utility model discloses still set up the material pipe mounting plate of setting up material pipe mounting groove, and through a plurality of elastic members connect the elastic strip of natural rubber, not only improve the fixed effect of powder conveying pipe, also improve the size range of powder conveying pipe suitable for the utility model discloses, improve the application scope of the utility model discloses. BRIEF DESCRIPTION OF DRAWINGS

[0022] The utility model will be further explained in connection with the drawings and examples;

[0023] Figure 1 It is the perspective view of preferred embodiment of the utility model discloses;

[0024] Figure 2 It is Figure 1 The enlarged schematic view of A part in

[0025] Figure 3 It is the structural diagram of removing upper mould and its component in the utility model discloses;

[0026] Figure 4 It is the sectional view of transverse drive assembly in the utility model discloses;

[0027] In the drawing: 1, operation platform;11, lower mould;12, upper mould;2, powder conveying device;21, powder conveying pipe;3, loading assembly;31, sliding rail;32, longitudinal drive assembly;321, longitudinal screw rod;322, longitudinal drive part;3221, longitudinal drive block;323, longitudinal drive motor;33, transverse drive assembly;331, transverse drive motor;332, transverse screw rod;3321, sliding block;3322, limit rod;333, material pipe mounting part;3331, material pipe mounting plate;3332, transverse drive block;3333, limit block;3334, elastic strip;3335, elastic member. DETAILED DESCRIPTION

[0028] The utility model will be further explained in connection with the drawings and examples;

[0029] Example

[0030] As Figure 1 shown, a polyimide foam material molding device, comprising: an operating table 1, a powder conveying device 2 arranged on one side of the operating table 1, a lower mold 11 located at the upper end of the operating table 1, an upper mold 12 located at the upper end of the lower mold 11, and a feeding assembly 3 located between the upper mold 12 and the lower mold 11; the powder conveying device 2 is provided with a powder conveying pipe 21, and the powder conveying pipe 21 is arranged as a PVC pipe; according to the prior art, a pneumatic conveying system is arranged inside the powder conveying device 2, compressed air is used as a conveying medium to push the polyimide powder to move in the powder conveying pipe 21, and through the design of the feeding assembly 3, the discharge port of the powder conveying pipe 21 can be fixed in the feeding assembly 3, the powder conveying pipe 21 is driven to displace along the length and width direction of the lower mold 11 at the upper end of the lower mold 11, so that the polyimide foaming powder is uniformly laid on the lower mold 11, the degree of automation is high, and the foaming material is uniformly laid, so as to improve the uniformity of product foaming and molding, and improve the quality of polyimide foam products.

[0031] As Figures 1-4 shown, specifically, the feeding assembly 3 comprises: sliding rails 31 located on both sides of the upper end of the lower mold 11, longitudinal driving assemblies 32 arranged on the sliding rails 31, and transverse driving assemblies 33 slidingly connected in the sliding rails 31; the longitudinal driving assembly 32 comprises: a longitudinal threaded rod 321 rotatably connected to the sliding rail 31, a longitudinal driving motor 323 arranged inside the operating table 1 for driving the longitudinal threaded rod 321 to rotate, and a longitudinal driving part 322 slidingly connected to one side of the longitudinal threaded rod 321; the transverse driving assembly 33 comprises: a transverse driving motor 331 fixedly connected with the longitudinal driving part 322, a transverse threaded rod 332 connected with the transverse driving motor 331 through a bevel gear set, and a pipe mounting part 333 slidingly connected to the transverse threaded rod 332; more specifically, the pipe mounting part 333 is used for mounting and fixing the powder conveying pipe 21, the longitudinal driving assembly 32 is used for driving the transverse driving assembly 33 to longitudinally displace relative to the length direction of the lower mold 11, and the transverse driving assembly 33 is used for driving the pipe mounting part 333 to transversely displace relative to the width direction of the lower mold 11.

[0032] As Figures 1-4As shown, more specifically, both the longitudinal threaded rod 321 and the transverse threaded rod 332 are provided with threaded grooves. The longitudinal drive member 322 and the sliding surface of the longitudinal threaded rod 321 are fixedly connected with a longitudinal drive block 3221 corresponding to the threaded groove. The material tube mounting member 333 and the sliding surface of the transverse threaded rod 332 are fixedly connected with a transverse drive block 3332 corresponding to the threaded groove. The longitudinal drive block 3221 and the transverse drive block 3332 are both spherical to match the threaded groove to reduce the stress of the threaded groove on the longitudinal drive block 3221 and the transverse drive block 3332 and improve the service life of the device. Both ends of the transverse threaded rod 332 are provided with sliding blocks 3321 fixedly connected to the longitudinal drive member 322. The sliding blocks 3321 are slidably connected in the sliding track 31 to restrict the longitudinal drive member 322 to slide only along the length direction of the longitudinal threaded rod 321.

[0033] like Figures 1-4 As shown, more specifically, a limiting rod 3322 is fixedly connected between the two longitudinal driving members 322, and the limiting rod 3322 is arranged parallel to the transverse threaded rod 332; the material tube mounting member 333 includes: a transverse driving member that is slidably connected to the transverse threaded rod 332, and a limiting block 3333 fixedly connected to the outer ring surface of the transverse driving member and slidably connected to the limiting rod 3322. The limiting block 3333 and the limiting rod 3322 are arranged to restrict the material tube mounting member 333 to slide only along the length direction of the transverse threaded rod 332.

[0034] Based on the above configuration, when the longitudinal threaded rod 321 and the transverse threaded rod 332 rotate, the longitudinal drive member 322 cannot rotate due to the configuration of the sliding block 3321 and the sliding track 31. At this time, under the pressure of the groove wall of the threaded groove against the longitudinal drive block 3221, the longitudinal drive block 3221 can only be moved along the length direction of the longitudinal threaded rod 321, that is, the transverse drive assembly 33 is moved along the sliding track 31. The configuration of the transverse drive block 3332 in the material tube mounting member 333 is similar, so as to drive the material tube mounting member 333 to slide along the length direction of the transverse threaded rod 332.

[0035] like Figures 1-4As shown, further, the material pipe mounting member 333 further comprises a material pipe mounting plate 3331 fixedly connected to the lateral driving member on the side facing the lower mold 11, and a pipe opening fixing groove is formed in the material pipe mounting plate 3331, and an elastic strip 3334 is connected to the inner ring surface of the pipe opening fixing groove through a plurality of elastic members 3335, the elastic members 3335 are composed of spring rings, the spring rings are arranged in an annular array on the inner ring surface of the pipe opening fixing groove, the two ends of the elastic strip 3334 are spaced apart from each other to form an opening for accommodating the powder conveying pipe 21, the elastic strip 3334 is made of natural rubber to increase the friction with the powder conveying pipe 21, and the elastic strip 3334 and the elastic members 3335 together increase the stability of the fixing of the powder conveying pipe 21.

[0036] Working principle: before the polyimide foaming, the powder conveying pipe 21 of the powder conveying device 2 is placed in the material pipe mounting groove, and the powder conveying pipe 21 is stably fixed in the material pipe mounting plate 3331 under the elastic action of the elastic members 3335, then the longitudinal driving motor 323 and the lateral driving motor 331 are started to drive the longitudinal threaded rod 321 and the lateral threaded rod 332 to rotate, under the resistance of the longitudinal driving block 3221 and the lateral driving block 3332 by the groove walls of the threaded grooves, and under the limiting action of the sliding block 3321 by the sliding rail 31 and the limiting action of the limiting block 3333 by the limiting rod 3322, the longitudinal threaded rod 321 drives the longitudinal driving member 322 to move longitudinally along the length direction of the lower mold 11, and the lateral threaded rod 332 drives the material pipe mounting plate 3331 to move laterally along the width direction of the lower mold 11, that is, the powder conveying pipe 21 is regularly slid through the entire lower mold 11, and the polyimide foaming powder is uniformly laid on the lower mold 11, thereby improving the uniformity and quality of the foaming product, and the polyimide foaming product has high foaming uniformity and high automation.

[0037] According to the ideal embodiments of the present application, the above description can be varied and modified without deviating from the technical concept of the present application. The technical scope of the present application is not limited by the description, and should be determined by the claims.

Claims

1. A polyimide foam molding apparatus characterized by comprising: Include: The operating platform (1), the powder conveying device (2) arranged on one side of the operating platform (1), the lower mold (11) located at the upper end of the operating platform (1), the upper mold (12) located at the upper end of the lower mold (11), and the feeding assembly (3) located between the upper mold (12) and the lower mold (11); the powder conveying device (2) is provided with a powder conveying pipe (21); The feeding assembly (3) comprises: sliding rails (31) located on both sides of the upper end of the lower mold (11), a longitudinal driving assembly (32) arranged on the sliding rails (31), and a transverse driving assembly (33) slidingly connected in the sliding rails (31); The longitudinal driving assembly (32) comprises: a longitudinal threaded rod (321) rotatably connected to the sliding rails (31), a longitudinal driving motor (323) arranged inside the operating platform (1) for driving the longitudinal threaded rod (321) to rotate, and a longitudinal driving piece (322) slidingly connected to one side of the longitudinal threaded rod (321); The transverse driving assembly (33) comprises: a transverse driving motor (331) fixedly connected with the longitudinal driving piece (322), a transverse threaded rod (332) connected with the transverse driving motor (331) through a bevel gear set, and a pipe mounting piece (333) slidingly connected to the transverse threaded rod (332); The pipe mounting piece (333) is used for mounting and fixing the powder conveying pipe (21), the longitudinal driving assembly (32) is used for driving the transverse driving assembly (33) to longitudinally displace relative to the length direction of the lower mold (11), and the transverse driving assembly (33) is used for driving the pipe mounting piece (333) to transversely displace relative to the width direction of the lower mold (11).

2. A polyimide foam molding apparatus according to claim 1, characterized by: The longitudinal threaded rod (321) and the transverse threaded rod (332) are both provided with a threaded groove, the longitudinal driving piece (322) is fixedly connected with a longitudinal driving block (3221) corresponding to the threaded groove on the sliding surface of the longitudinal threaded rod (321), and the pipe mounting piece (333) is fixedly connected with a transverse driving block (3332) corresponding to the threaded groove on the sliding surface of the transverse threaded rod (332); when the longitudinal threaded rod (321) and the transverse threaded rod (332) rotate, the longitudinal driving block (3221) and the transverse driving block (3332) are respectively driven by the threaded groove to slide the longitudinal driving piece (322) and the pipe mounting piece (333).

3. A polyimide foam molding apparatus according to claim 2, wherein: The longitudinal driving block (3221) and the transverse driving block (3332) are both spherical bodies matched with the threaded groove.

4. A polyimide foam molding apparatus according to claim 2, wherein: Both ends of the transverse threaded rod (332) are provided with sliding blocks (3321) fixedly connected with the longitudinal driving piece (322), and the sliding blocks (3321) are slidingly connected in the sliding rails (31).

5. A polyimide foam molding apparatus according to claim 4, wherein: The longitudinal driving pieces (322) between the two sides are fixedly connected with a limiting rod (3322), and the limiting rod (3322) is arranged in parallel with the transverse threaded rod (332).

6. A polyimide foam molding apparatus according to claim 5, wherein: The material pipe mounting piece (333) comprises a transverse driving piece in sliding connection with the transverse threaded rod (332), and a limiting block (3333) fixedly connected to the outer circumferential surface of the transverse driving piece and in sliding connection with the limiting rod (3322).

7. A polyimide foam molding apparatus according to claim 6, wherein: The material pipe mounting piece (333) further comprises a material pipe mounting plate (3331) fixedly connected to the transverse driving piece on the side facing the lower mold (11) through a connecting piece; a material pipe mounting groove is formed in the material pipe mounting plate (3331), and an elastic strip (3334) is connected to the inner circumferential surface of the material pipe mounting groove through a plurality of elastic pieces (3335).

8. A polyimide foam molding apparatus according to claim 7, wherein: The elastic strip (3334) is made of natural rubber.

9. The polyimide foam molding apparatus according to claim 1, wherein: The powder conveying pipe (21) is a PVC pipe.

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