Permanent magnetic ferrite wet pressing magnetic shoe female die

Abstract

The utility model relates to a permanent magnetic ferrite wet pressing magnetic shoe female die which comprises an upper die body, the upper die body is provided with a concave face at the bottom and a negative pressure channel communicated with the concave face, the negative pressure channel is provided with a non-return cavity extending in the radial direction, and a plug is movably arranged in the non-return cavity. The plug floats into the non-return cavity under the influence of negative pressure in the negative pressure state and enables the negative pressure channel to be communicated, and the plug falls at the junction of the negative pressure channel and the non-return cavity under the influence of gravity in the normal state to plug the negative pressure channel so as to prevent media from flowing back. According to the utility model, the non-return cavity and the plug are arranged, so that the negative pressure channel is communicated in a negative pressure state and allows water absorption, and meanwhile, the negative pressure channel can be blocked in a normal state to prevent a backflow phenomenon.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic tiles, in particular to a permanent ferrite wet-pressed magnetic tile concave die. Background Art

[0002] The magnetic tile die refers to the upper die with a concave surface when the magnetic tile is formed. It has a negative pressure channel inside that connects to the concave surface. After the mold is closed, the negative pressure equipment extracts the moisture in the mold cavity through the negative pressure channel. However, when the mold is opened after the magnetic tile is formed, the negative pressure in the negative pressure channel decreases, and some of the remaining moisture in the channel will flow back into the mold cavity. Utility Model Content

[0003] The utility model addresses the problem in the prior art that the residual moisture in the negative pressure channel will flow back into the mold cavity due to the decrease in negative pressure in the negative pressure channel when the mold is opened. The utility model provides a permanent ferrite wet-pressed magnetic tile die. The specific technical solution is as follows:

[0004] A permanent magnet ferrite wet-pressed magnetic tile die comprises an upper die body having a concave surface at the bottom and a negative pressure channel connected to the concave surface; the negative pressure channel is provided with a radially extending non-return cavity; a plug is movably provided in the non-return cavity; the plug floats into the non-return cavity under the influence of negative pressure in a negative pressure state and allows the negative pressure channel to pass through; the plug falls at the junction of the negative pressure channel and the non-return cavity under the influence of gravity under normal conditions to block the negative pressure channel to prevent the medium from flowing back.

[0005] As a further technical solution of the present invention, a baffle is provided in the anti-return cavity, the baffle is a hollow structure, and the plug contacts the baffle under a negative pressure state.

[0006] As a further technical solution of the present invention, one end of the baffle facing the plug is connected to a guide rod penetrating the plug, and the plug moves along the guide rod trajectory under negative pressure.

[0007] As a further technical solution of the present invention, one side of the anti-return cavity is connected with a release channel, and the release channel extends in a decreasing manner from the connection point between the release channel and the anti-return cavity.

[0008] As a further technical solution of the present invention, the upper end surface of the plug is a bulge, and under normal conditions, the lower edge of the upper end surface of the plug is adjacent to the lower edge of the release channel.

[0009] As a further technical solution of the present invention, the release channel extends from one end away from the anti-return cavity and passes through the upper mold body to form an opening, and a blocking piece is inserted into the opening of the release channel.

[0010] The beneficial effects of the utility model are as follows:

[0011] (1) In the present application, by providing a check cavity and a plug, the negative pressure channel is allowed to pass through under negative pressure and allow water to be absorbed. At the same time, the negative pressure channel can be blocked under normal conditions to prevent backflow.

[0012] (2) In the present application, a release channel is also provided to guide the water blocked by the plug, so that the backflowing water leaves the negative pressure channel from another direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The figure shows the internal structure of the permanent ferrite wet pressed magnetic tile die;

[0014] Figure 2 Shows a schematic structural diagram of the anti-return cavity;

[0015] Figure 3 Shown Figure 2 Schematic diagram of the state structure.

[0016] Legend:

[0017] 100, upper mold body; 110, concave surface; 120, negative pressure channel; 121, check cavity; 122, plug; 123, baffle; 124, guide rod; 130, release channel; 131, baffle. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0019] This application is based on the technical problem in the prior art that the negative pressure channel of the magnetic shoe die will flow back when the die is opened, and a check structure is provided in the negative pressure channel to prevent the medium from flowing back.

[0020] Figure 1 The figure shows the internal structure of the permanent ferrite wet pressed magnetic tile die; Figure 2 shows a schematic structural diagram of the anti-return cavity 121; Figure 3 Shown Figure 2 Schematic diagram of the state structure; Figure 1-Figure 3In the figure, the permanent magnet ferrite wet-pressed magnetic tile die includes an upper mold body 100, which has a concave surface 110 at the bottom and a negative pressure channel 120 connected to the concave surface 110. The negative pressure channel 120 is provided with a radially extending non-return cavity 121, and a plug 122 is movably provided in the non-return cavity 121. Under the negative pressure state, the plug 122 is affected by the negative pressure and floats into the non-return cavity 121 and allows the negative pressure channel 120 to pass through. Under normal conditions, the plug 122 falls on the junction of the negative pressure channel 120 and the non-return cavity 121 under the influence of gravity to seal the negative pressure channel 120 to prevent the medium from flowing back. Under negative pressure, the plug 122 is sucked into the non-return cavity 121. At this time, the negative pressure channel 120 is connected, so that moisture can be sucked out of the negative pressure channel 120. Under normal conditions, the negative pressure is reduced, and under the influence of gravity, the plug 122 will fall at the junction of the negative pressure channel 120 and the non-return cavity 121. The guide rod 124 is used to limit the trajectory of the plug 122, mainly so that the plug 122 can still be reset when the negative pressure is reduced, thereby blocking the negative pressure channel 120 and preventing backflow.

[0021] Although the plug 122 can prevent backflow, the residual water is still stored in the negative pressure channel 120. When the negative pressure channel is connected for the second time, there is still a hidden danger of secondary backflow. One side of the check cavity 121 is connected to the release channel 130, and the release channel 130 extends in a decreasing manner from the connection point with the check cavity 121. In other words, the release channel 130 has a highest point, and the highest point is the junction with the check cavity 121. In this way, water can directly flow into and be stored in the release channel 130. The upper end surface of the plug 122 is a bulge. Under normal circumstances, the plug 122 The lower edge of the upper end surface is adjacent to the lower edge of the release channel 130; in this way, all the moisture can be introduced into the release channel 130 to prevent moisture from remaining in the non-return cavity 121; the release channel 130 extends from one end of the non-return cavity 121 and passes through the upper mold body 100 to form an opening, and a baffle 131 is inserted into the opening of the release channel 130; using the baffle 131 to block the release channel 130 can ensure that the negative pressure state is not affected, and after the moisture in the release channel 130 is stored to a certain level, the baffle 131 can be removed to release the moisture in the release channel 130.

[0022] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. A permanent ferrite wet-pressed magnetic tile die, comprising an upper die body (100), wherein the upper die body (100) has a concave surface (110) at the bottom and a negative pressure channel (120) communicating with the concave surface (110), characterized in that: The negative pressure channel (120) is provided with a radially extending check cavity (121), and a plug (122) is movably provided in the check cavity (121). Under a negative pressure state, the plug (122) floats into the check cavity (121) under the influence of negative pressure and allows the negative pressure channel (120) to pass through. Under normal conditions, the plug (122) falls under the influence of gravity at the junction of the negative pressure channel (120) and the check cavity (121) to block the negative pressure channel (120) to prevent the medium from flowing back.

2. The permanent magnet ferrite wet pressed magnetic tile die according to claim 1, characterized in that: A baffle (123) is provided in the anti-return cavity (121), and the baffle (123) is a hollow structure. The plug (122) contacts the baffle (123) under a negative pressure state.

3. The permanent magnet ferrite wet pressed magnetic tile die according to claim 2, characterized in that: One end of the baffle (123) facing the plug (122) is connected to a guide rod (124) penetrating the plug (122), and the plug (122) moves along the trajectory of the guide rod (124) under negative pressure.

4. The permanent magnet ferrite wet pressed magnetic tile die according to claim 3, characterized in that: One side of the anti-return cavity (121) is connected to a release channel (130), and the release channel (130) extends in a decreasing manner from the point where it is connected to the anti-return cavity (121).

5. The permanent magnet ferrite wet pressed magnetic tile die according to claim 3, characterized in that: The upper end surface of the plug (122) is a bulge, and in a normal state, the lower edge of the upper end surface of the plug (122) is adjacent to the lower edge of the release channel (130).

6. The permanent magnet ferrite wet pressed magnetic tile die according to claim 5, characterized in that: The release channel (130) extends from one end of the anti-return cavity (121) and penetrates the upper mold body (100) to form an opening, and a blocking piece (131) is inserted into the opening of the release channel (130).

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