Hyperbranched polyaromatic resin forming pressure maintaining device

Abstract

The utility model provides a hyperbranched polyarylester resin forming pressure maintaining device, which relates to the technical field of hyperbranched polyarylester resin forming and comprises a pressure maintaining table and a hydraulic oil cylinder, the hydraulic oil cylinder is arranged at the top end of the pressure maintaining table, and a plurality of guide rails are slidably arranged on the outer sides of the pressure maintaining table and the hydraulic oil cylinder. A plate frame in sliding fit with the guide rails is arranged between the pressure maintaining table and the hydraulic oil cylinder, and the hydraulic oil cylinder extends towards the plate frame end to be provided with a hydraulic shaft. The face, close to the hydraulic oil cylinder, of the plate frame forms a concave face, a strip-shaped cooling head is embedded in the inner wall of the concave face, and the cooling head is externally connected with a valve pipe. Water path structures for cooling water to flow on and off to control the temperature are arranged at all the end parts of the pressure maintaining end of the device, so that the device senses the temperature of the end parts through sensors arranged in the device, and the PLC control end is matched to control the on-off of water paths, so that the temperature of all local parts of the pressure maintaining surface of the device is adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to hyperbranched polyarylate resin forming technical field, more specifically, the utility model relates to a kind of hyperbranched polyarylate resin forming pressure maintaining device. BACKGROUND

[0002] Polyarylate has high strength, high modulus and high temperature resistance and other characteristics, because the rigid skeleton of polyarylate contains aromatic or heterocyclic repeat unit, processing temperature is high and melt viscosity is high, the requirement to processing equipment and forming technology is very harsh;

[0003] In the pressure maintaining phase of polyarylate forming, mainly by continuously exerting pressure to compact melt, increase plastic density, to compensate the shrinkage behavior of plastic, in the pressure maintaining process, because the cavity has been filled with raw material, back pressure is higher, polyarylate solidification accelerates due to mold wall cooling, melt viscosity increases, due to the time difference before and after raw material flow, the traditional pressure maintaining device is easy to cause the temperature of local position of each part to be inconsistent, causing poor forming consistency after cooling forming;

[0004] Therefore, the utility model provides a kind of effectively solve the problem that the cooling temperature is inconsistent and leads to the problem of poor forming consistency when existing polyarylate forming pressure maintaining. UTILITY MODEL CONTENT

[0005] The utility model solves the technical problems that the temperature of local position of each part of existing hyperbranched polyarylate forming pressure maintaining device is inconsistent, and poor forming consistency after cooling forming is prone to occur, in view of the problems existing in the prior art, a hyperbranched polyarylate forming pressure maintaining device is provided.

[0006] The purpose and effect of the utility model are achieved by the following specific technical means: a pressure maintaining table and a hydraulic cylinder are included, the hydraulic cylinder is arranged at the top end of the pressure maintaining table, a plurality of guide rails are slidably arranged outside the pressure maintaining table and the hydraulic cylinder, a plate frame is arranged between the pressure maintaining table and the hydraulic cylinder and slidably matched with the guide rails, and the hydraulic cylinder extends to the plate frame end and is provided with a hydraulic shaft;

[0007] One side of the plate frame close to the hydraulic cylinder is formed as a concave surface, and a strip-shaped cooling head is embedded in the inner wall thereof, and the cooling head is connected with a valve pipe;

[0008] A rail frame is fixed on the pressure maintaining table, and a pair of guide plates are symmetrically arranged on the rail frame, the position of the guide plate is matched with the concave surface of the plate frame, a plurality of pressure pipes are arranged on the inner side of the guide plate, and an inner pipe is connected between the pressure pipes;

[0009] The plate frame concave surface and the inner wall of the guide plate are both locally embedded with sheet-shaped temperature sensing heads.

[0010] Further, a machine base is fixed outside the hydraulic cylinder, and a pump pipe communicating with the hydraulic cylinder is fixed in the machine base.

[0011] Further, a cooling water tank is embedded in the machine base, and an inlet pipe and a liquid pipe are connected to the cooling water tank, and the liquid pipe is connected to a valve pipe and an inner pipe through an external hose.

[0012] Further, a pressing block is fixed on the connecting end of the plate frame and the hydraulic shaft, and an annular pipe is arranged on the outside of the pressing block and connected to the valve pipe.

[0013] Further, an inner lining is embedded in the concave surface of the plate frame and tightly connected to the cooling head.

[0014] Further, a heat-conducting head is arranged at the end of the pressing pipe, and the heat-conducting head is a metal arc piece with high heat conductivity.

[0015] The utility model discloses the beneficial effects of:

[0016] The waterway structure for cooling water flow control temperature is arranged at each end of the device pressure maintaining end, so that the device can sense the end temperature through the sensor arranged therein, and the PLC control end can control the waterway to be turned on and turned off, so that the temperature of each local part of the pressure maintaining surface of the device can be adjusted, so that the cooling speed of each part during the molding can be kept consistent, and the quality of the profile after molding can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further described in connection with the drawings.

[0018] Figure 1 It is the whole structure schematic diagram of the utility model;

[0019] Figure 2 It is the internal plane structure schematic diagram of the utility model;

[0020] Figure 3 It is the internal plane structure schematic diagram of the plate frame of the utility model;

[0021] Figure 4 It is the guide plate side plane structure schematic diagram of the utility model;

[0022] Figure 5 It is the pressing pipe plane structure schematic diagram of the utility model.

[0023] Figures 1-5The utility model discloses a kind of hyperbranched polyaromatic resin forming pressure maintaining devices, including pressure maintaining platform 1 and hydraulic cylinder 2, hydraulic cylinder 2 is set at the top of pressure maintaining platform 1, pressure maintaining platform 1 and hydraulic cylinder 2 outer side slidingly arranged with multiple guide rails, and pressure maintaining platform 1 and hydraulic cylinder 2 between being provided with the plate frame 3 of sliding cooperation with guide rail, hydraulic cylinder 2 extends and is provided with hydraulic shaft 5 to plate frame 3 end. DETAILED DESCRIPTION

[0024] In order to enable more clearly understand the above-mentioned purpose, features and advantages of the present application, the following will be combined with the accompanying drawings Figures 1-5 and specific embodiments to further describe the present application in detail. The following examples are only examples of implementing the present application. It must be pointed out that the disclosed examples do not limit the scope of the present application. On the contrary, changes and improvements made without departing from the scope of the present application are within the scope of the patent protection of the present application.

[0025] A kind of hyperbranched polyaromatic resin forming pressure maintaining device, including pressure maintaining platform 1 and hydraulic cylinder 2, hydraulic cylinder 2 is set at the top of pressure maintaining platform 1, pressure maintaining platform 1 and hydraulic cylinder 2 outer side slidingly arranged with multiple guide rails, and pressure maintaining platform 1 and hydraulic cylinder 2 between being provided with the plate frame 3 of sliding cooperation with guide rail, hydraulic cylinder 2 extends and is provided with hydraulic shaft 5 to plate frame 3 end.

[0026] The side of plate frame 3 close to hydraulic cylinder 2 forms concave surface, and the inner wall of which is embedded with strip-shaped cooling head 13, and valve pipe 12 is connected with cooling head 13.

[0027] Pressure maintaining platform 1 is fixed with rail frame 6, and a pair of guide plates 7 is symmetrically arranged on rail frame 6, the position of guide plate 7 matches the concave surface of plate frame 3, and a plurality of pressure pipes 15 are arranged on the inner side of guide plate 7, and inner pipe 16 is communicated between pressure pipes 15.

[0028] Plate frame 3 concave surface, guide plate 7 inner wall is locally embedded with sheet temperature sensing head.

[0029] In the hyperbranched polyaromatic resin forming pressure maintaining device, based on the traditional pressure maintaining mode, the plate frame 3 of the form of down pressure is used as the pressure maintaining structure between pressure maintaining platform 1, the concave surface opened on plate frame 3 and the matching guide plate 7 are used for placing mold, when hydraulic cylinder 2 feeds, the brake hydraulic shaft 5 of hydraulic cylinder 2 is used to make plate frame 3 press down to the end of mold along guide rail, and force is continuously applied during pressure maintaining process, so as to complete the pressure maintaining action of the device.

[0030] Wherein, the device is embedded with sheet-shaped temperature sensor head on the concave surface of the plate frame 3 and the inner wall of the guide plate 7, and the temperature sensor is controlled by the PLC system. The temperature sensor mainly uses the sensor head to sense the cooling speed of the end of the plate frame 3 and the end of the guide plate 7, that is, the cooling speed of the plate frame 3 and the mold, and the cooling speed of the guide plate 7 and the mold, so as to supply cooling water flow to the valve pipe 12 and the inner pipe 16 through the external liquid pipe, control the on-off of the cooling water flow, adjust the temperature of the local position, and ensure the consistency of the cooling temperature of each position during the pressure maintaining process, thereby improving the molding quality.

[0031] Compared with the traditional pressure maintaining device, the device considers the influence of the temperature difference of each pressure maintaining position on the molding quality during the pressure maintaining stage of the hyperbranched polyaromatic resin molding, and further sets the valve port in the cooling water path of the local position, cooperates with the collection of the temperature sensor head, to realize the temperature control of each local position, and improve the practicability of the device.

[0032] Further, the hydraulic cylinder 2 is fixed outside the base 4, and the pump pipe 8 communicating with the hydraulic cylinder 2 is fixed in the base 4. The pump pipe 8 interface for feeding control of the hydraulic cylinder 2 is provided in the external base 4, so that the external PLC control end is conveniently connected to the hydraulic cylinder 2 for feeding control.

[0033] Further, the cooling water tank 9 is embedded in the base 4, and the inlet pipe and the liquid pipe 10 are connected to the cooling water tank 9. The liquid pipe 10 is connected to the valve pipe 12 and the inner pipe 16 through the external hose. The cooling water tank 9 in the base 4 is used as the supply end of the water circulation, and the cooling water flow is transported through the liquid pipe 10 by the external water pump set. The water flow is connected to the valve pipe 12 and the inner pipe 16 through the external hose, so as to supply and control the water path. The PLC control end is used to control the on-off of the cooling water by pumping.

[0034] Further, the pressure block 11 is fixedly arranged at the connecting end of the plate frame 3 and the hydraulic shaft 5. The annular pipe is arranged outside the pressure block 11 and connected to the valve pipe 12. The pressure block 11 is used as the connecting end between the hydraulic shaft 5 and the plate frame 3. The pressure block is made of metal pressure head structure, which is used as the pressing end of the mold top surface. The annular pipe is also arranged to cool the mold top surface. The cooling water flow is supplied to the device to control the temperature of the local position of the mold, thereby further expanding the cooling end surface of the device.

[0035] Further, the inner lining sheet 14 is embedded in the concave surface of the plate frame 3. The inner lining sheet 14 is tightly combined with the cooling head 13. The inner lining sheet 14 is used as the combined end of the cooling head 13 and the mold side surface. The base material of the inner lining sheet 14 is selected, such as metal sheet, to improve the heat conduction effect between the cooling head 13 and the mold, thereby ensuring the cooling effect of the cooling water path of the device.

[0036] Further, the end of the pressing pipe 15 is provided with a heat-conducting head 17, which is a high-heat-conductivity metal arc piece. The arc-shaped heat-conducting head 17 is used as the contact end between the cooling water filled in the pressing pipe 15 and the mold surface. The cooling water body is in contact with the mold surface through the heat-conducting head 17. The arc surface of the heat-conducting head 17 under pressure ensures the tightness of the contact between the heat-conducting head 17 and the mold surface, thereby improving the cooling effect of the end of the pressing pipe 15.

Claims

1. A super-branched polyaromatic resin forming pressure maintaining device, comprising a pressure maintaining table (1) and a hydraulic oil cylinder (2), wherein the hydraulic oil cylinder (2) is arranged at the top end of the pressure maintaining table (1), characterized in that: The pressure maintaining platform (1) is provided with a plurality of guide rails outside the hydraulic cylinder (2), and a plate frame (3) is arranged between the pressure maintaining platform (1) and the hydraulic cylinder (2) and is in sliding cooperation with the guide rails, and the hydraulic cylinder (2) extends to the end of the plate frame (3) and is provided with a hydraulic shaft (5); The plate frame (3) is provided with a concave surface on the side close to the hydraulic cylinder (2), and a strip-shaped cooling head (13) is embedded in the inner wall of the concave surface, and the cooling head (13) is provided with a valve pipe (12); The pressure maintaining platform (1) is provided with a rail frame (6), and a pair of guide plates (7) are symmetrically arranged on the rail frame (6), the position of the guide plates (7) matches the concave surface of the plate frame (3), and a plurality of pressure pipes (15) are arranged on the inner side of the guide plates (7), and an inner pipe (16) is arranged between the pressure pipes (15). The plate frame (3) is provided with a concave surface, and the inner wall of the guide plate (7) is locally embedded with a sheet-shaped temperature sensing head.

2. The hyperbranched polyaromatic resin forming pressure maintaining device according to claim 1, characterized in that: The hydraulic cylinder (2) is fixed with a machine base (4), and the machine base (4) is fixed with a pump pipe (8) in communication with the hydraulic cylinder (2).

3. The hyperbranched polyaromatic resin forming pressure maintaining device according to claim 2, characterized in that: The machine base (4) is embedded with a cooling water tank (9), and the cooling water tank (9) is provided with an inlet pipe and a liquid pipe (10), and the liquid pipe (10) is connected with the valve pipe (12) and the inner pipe (16) through an external hose.

4. The hyperbranched polyaromatic resin molding pressure maintaining device according to claim 1, characterized by: The connecting end of the plate frame (3) and the hydraulic shaft (5) is fixed with a pressing block (11), and the pressing block (11) is provided with an annular pipe on the outside, and the annular pipe is connected with the valve pipe (12).

5. The hyperbranched polyaromatic resin molding pressure maintaining device according to claim 1, characterized by: The concave surface of the plate frame (3) is embedded with an inner lining (14), and the inner lining (14) is in close contact with the cooling head (13).

6. The hyperbranched polyaromatic resin molding pressure maintaining device according to claim 1, characterized by: The pressure pipe (15) is provided with a heat conducting head (17) at the end, and the heat conducting head (17) is a high-thermal-conductivity metal arc piece.

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