Scraping device for polytetrafluoroethylene powder mold pressing mold

Abstract

The utility model discloses a scraping device for a polytetrafluoroethylene powder mould pressing mould, which reciprocates above the mould pressing mould to scrape and flatten polytetrafluoroethylene powder in an inner cavity of the mould pressing mould, the scraping device comprises a supporting beam and a scraping plate, the supporting beam is erected above the side wall of the mould pressing mould in a crossing manner, and the scraping plate is arranged above the side wall of the mould pressing mould. Under the action of external force, the scraping plate is driven to do reciprocating motion in the inner cavity of the mold pressing mold, so that the polytetrafluoroethylene powder in the inner cavity is scraped and spread to be flat; and the supporting beam is connected with the scraping plate through at least one group of floating pieces, so that the scraping plate is in floating contact with the polytetrafluoroethylene powder in the moving process. According to the scraping device for the polytetrafluoroethylene powder mold pressing mold, the scraping plate can be driven to scrape and flatten polytetrafluoroethylene powder in an inner cavity of the mold pressing mold only by pressing the supporting beam and performing reciprocating motion, a reciprocating sliding groove is formed in the side wall of the mold pressing mold, meanwhile, balls are embedded in the two ends of the supporting beam, and the polytetrafluoroethylene powder can be scraped and flattened through rolling of the balls in the reciprocating sliding groove. And the difficulty of scraping and spreading operation can be greatly reduced, so that the manipulation requirements of operators are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of polytetrafluoroethylene sheet production equipment, in particular to a scraping device for a polytetrafluoroethylene powder molding die. Background Art

[0002] Polytetrafluoroethylene has a series of excellent performance properties: high temperature resistance, long-term use temperature 200 ~ 260 degrees, low temperature resistance, still soft at -100 degrees; corrosion resistance, resistant to aqua regia and all organic solvents; weather resistance, the best aging life among plastics; high lubricity, with the smallest friction coefficient among plastics; non-stickiness, with the smallest surface tension among solid materials and without adhering to any substance; non-toxic, physiologically inert; excellent electrical properties, an ideal Class C insulating material, a layer as thick as newspaper can block a high voltage of 1500V; smoother than ice.

[0003] There are many ways to form polytetrafluoroethylene (PTFE) sheets. Among them, compression molding is a common method, which uses PTFE powder for compression molding, enhancing processing flexibility and adapting to the needs of different products and shapes.

[0004] When PTFE powder is placed in the inner cavity of the molding die, a scraper is needed to spread the powder flat. The existing scraping process is to manually scrape and spread the powder repeatedly with a single scraper until it is flat. This traditional scraping method requires high skills from the operator, and each scraping process takes a long time, which makes it difficult to meet the requirements of efficient production. Utility Model Content

[0005] The utility model aims to provide a scraper device for a polytetrafluoroethylene powder molding die. By configuring the scraper device adapted to the molding die, the polytetrafluoroethylene powder in the inner cavity of the molding die can be scraped and spread flat with simple reciprocating movement.

[0006] In order to solve the above technical problems, the utility model provides a scraper device for a polytetrafluoroethylene powder molding die, which reciprocates above the molding die to scrape and flatten the polytetrafluoroethylene powder in the inner cavity of the molding die. The scraper device includes a support beam and a scraper.

[0007] The supporting beam is erected across the side wall of the molding die, and drives the scraper to reciprocate in the inner cavity of the molding die under the action of external force, so as to scrape and spread the polytetrafluoroethylene powder therein flat;

[0008] The supporting beam is connected to the scraper by at least one group of floating parts, so that the scraper is in floating contact with the polytetrafluoroethylene powder during movement.

[0009] Preferably, the floating members are provided in two groups and are symmetrically distributed at both ends of the scraper.

[0010] Preferably, the floating member includes a screw rod, one end of which is fixedly connected to the scraper, and the other end of which vertically penetrates the support beam, and a clamping nut is connected to the screw rod, and the clamping nut connects the scraper to the support beam through the screw rod.

[0011] Preferably, the floating member further comprises a floating spring, which is sleeved on the screw rod and has two ends respectively in contact with the supporting beam and the scraper.

[0012] Preferably, a scraping and spreading flow groove is provided on the scraper, and when the scraper spreads the polytetrafluoroethylene powder, the accumulated polytetrafluoroethylene powder passes through the scraping and spreading flow groove to the other side.

[0013] Preferably, anti-slip patterns are engraved on both sides of the support beam to facilitate palm support.

[0014] Preferably, a reciprocating groove is provided on the side wall of the molding die, so that the supporting beam can move along the reciprocating groove.

[0015] Preferably, the reciprocating slide grooves are symmetrically arranged on both sides of the molding die.

[0016] Preferably, four reciprocating slide grooves are provided and distributed on four side walls of the molding die.

[0017] Preferably, balls are embedded at both ends of the supporting beam, and the balls roll in the reciprocating groove.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The scraper device for the polytetrafluoroethylene powder molding die only needs to support the supporting beam and reciprocate to drive the scraper to scrape and spread the polytetrafluoroethylene powder in the inner cavity of the molding die, and a reciprocating slide groove is opened on the side wall of the molding die. At the same time, balls are embedded at both ends of the supporting beam. The balls roll in the reciprocating slide groove, which can greatly reduce the difficulty of the scraping operation, thereby reducing the operator's skill requirements;

[0020] 2. The support beam and the scraper of the scraper device for the polytetrafluoroethylene powder molding die are connected by at least one group of floating parts, so that the scraper can float and contact with the polytetrafluoroethylene powder during movement. When the polytetrafluoroethylene powder in the inner cavity of the molding die accumulates, the scraper can float and spread it under the action of the floating parts, thereby avoiding manual powder spreading and further reducing the workload of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the scraping device provided by the utility model scraping polytetrafluoroethylene powder in a molding die;

[0022] Figure 2 It is a top view from a second perspective of the scraping device provided by the utility model scraping polytetrafluoroethylene powder in a molding die;

[0023] Figure 3 It is a structural schematic diagram of the scraping device provided by the utility model;

[0024] Figure 4 It is a structural schematic diagram of the molding die provided by the utility model.

[0025] In the figure: 1. molding die; 101. reciprocating slide; 2. polytetrafluoroethylene powder; 3. supporting beam; 4. scraper; 401. scraping flow slot; 5. floating part; 501. screw; 502. clamping nut; 503. floating spring. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances. Example

[0029] The utility model provides a scraper device for a polytetrafluoroethylene powder molding die. Figure 1 and Figure 2, reciprocating above the molding die 1, scraping and leveling the polytetrafluoroethylene powder 2 in the inner cavity of the molding die 1, the scraping device comprises a supporting beam 3 and a scraper 4, the supporting beam 3 is spanned above the side wall of the molding die 1, and drives the scraper 4 to reciprocate in the inner cavity of the molding die 1 under the action of external force, thereby scraping and leveling the polytetrafluoroethylene powder 2 therein; the supporting beam 3 and the scraper 4 are connected by at least one group of floating parts 5, so that the scraper 4 is in floating contact with the polytetrafluoroethylene powder 2 during the movement.

[0030] The scraper device for the polytetrafluoroethylene powder molding die only needs to support the support beam 3 and reciprocate to drive the scraper 4 to scrape and spread the polytetrafluoroethylene powder in the inner cavity of the molding die 1, and a reciprocating groove 101 is opened on the side wall of the molding die 1. At the same time, balls are embedded at both ends of the support beam 3. The balls roll in the reciprocating groove, which can greatly reduce the difficulty of the scraping operation, thereby reducing the operator's skill requirements.

[0031] For details, please refer to Figure 3 The floating members 5 are provided with two groups, which are symmetrically distributed at both ends of the scraper 4.

[0032] Furthermore, the floating member 5 includes a screw rod 501, one end of which is fixedly connected to the scraper 4, and the other end vertically penetrates the support beam 3, and a clamping nut 502 is connected to the screw rod 501, and the clamping nut 502 connects the scraper 4 to the support beam 3 through the screw rod 501.

[0033] In addition, the floating member 5 further includes a floating spring 503 . The floating spring 503 is sleeved on the screw rod 501 , and two ends of the floating spring 503 are in contact with the supporting beam 3 and the scraper 4 respectively.

[0034] Specifically, a scraping and spreading flow groove 401 is provided on the scraper 4. When the scraper 4 scrapes the polytetrafluoroethylene powder 2, the accumulated polytetrafluoroethylene powder 2 passes through the scraping and spreading flow groove 401 to the other side.

[0035] Specifically, anti-skid patterns 301 are carved on both sides of the support beam 3 to facilitate palm support.

[0036] For details, please refer to Figure 4 A reciprocating slide groove 101 is provided on the side wall of the molding die 1 , so that the supporting beam 3 can move along the reciprocating slide groove 101 .

[0037] In some embodiments, the reciprocating grooves 101 are symmetrically arranged on both sides of the molding die 1 so that the scraping device can reciprocate along the reciprocating grooves 101 on both sides.

[0038] In some embodiments, four reciprocating grooves 101 are provided and distributed on the four side walls of the molding die 1, so that the scraping device can not only move in one direction, but also reciprocate in another perpendicular direction.

[0039] In some embodiments, balls are embedded at both ends of the support beam 3, and the balls roll in the reciprocating groove 101, so that when the support beam 3 moves, the sliding can be smoother.

[0040] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A scraping device for a polytetrafluoroethylene powder molding die, which reciprocates above the molding die (1) to scrape and spread the polytetrafluoroethylene powder (2) in the inner cavity of the molding die (1), characterized in that: It comprises a supporting beam (3) and a scraper (4), The supporting beam (3) is erected across the side wall of the molding die (1), and drives the scraper (4) to reciprocate in the inner cavity of the molding die (1) under the action of external force, thereby scraping and spreading the polytetrafluoroethylene powder (2) therein flat; The supporting beam (3) and the scraper (4) are connected via at least one group of floating members (5), so that the scraper (4) is in floating contact with the polytetrafluoroethylene powder (2) during movement; The floating member (5) comprises a screw rod (501), one end of which is fixedly connected to the scraper (4), and the other end of which vertically penetrates the support beam (3), and a clamping nut (502) is connected to the screw rod (501), and the clamping nut (502) connects the scraper (4) to the support beam (3) through the screw rod (501); the floating member (5) further comprises a floating spring (503), which is sleeved on the screw rod (501), and the two ends of which are respectively in contact with the support beam (3) and the scraper (4); The scraper (4) is provided with a scraping and spreading flow groove (401). When the scraper (4) scrapes the polytetrafluoroethylene powder (2), the accumulated polytetrafluoroethylene powder (2) passes through the scraping and spreading flow groove (401) to the other side.

2. A scraper device for a polytetrafluoroethylene powder molding die as claimed in claim 1, characterized in that: The floating members (5) are provided in two groups and are symmetrically distributed at both ends of the scraper (4).

3. A scraper device for a polytetrafluoroethylene powder molding die as claimed in claim 1, characterized in that: Anti-slip patterns (301) are carved on both sides of the support beam (3) to facilitate palm support and pressure.

4. A scraper device for a polytetrafluoroethylene powder molding die as claimed in claim 1, characterized in that: A reciprocating slide groove (101) is provided on the side wall of the molding die (1) so that the supporting beam (3) can move along the reciprocating slide groove (101).

5. A scraper device for a polytetrafluoroethylene powder molding die as claimed in claim 4, characterized in that: The reciprocating slide grooves (101) are symmetrically arranged on both sides of the molding die (1).

6. A scraper device for a polytetrafluoroethylene powder molding die as claimed in claim 4, characterized in that: The reciprocating slide grooves (101) are provided with four grooves, which are distributed on the four side walls of the molding die (1).

7. A scraper device for a polytetrafluoroethylene powder molding die as claimed in claim 4, characterized in that: Ball bearings are embedded at both ends of the support beam (3), and the balls roll in the reciprocating slide groove (101).

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