CN216760583U - A wrapping mold - Google Patents

Abstract

A hemming die belongs to the technical field of polyurethane hemming blind plate dies and polyurethane hemming sieve plate dies. The blind plates or the sieve plates or the edge covering forms corresponding to different models need to adopt dies corresponding to the models, the dies are matched singly, and the manufacturing cost of the dies is high. The die comprises a bottom die and a frame, wherein the frame surrounds the upper surface of the bottom die to form a die cavity, the frame comprises a longitudinal frame and a transverse frame, pin holes are formed in the longitudinal frame and the transverse frame, corresponding pin holes are formed in the bottom die, and the longitudinal frame and the transverse frame are detachably connected to the bottom die through positioning pins and the pin holes; indulge frame or horizontal frame and be equipped with side molding forming structure towards the inside one side of die cavity, and keep away from the inside one side of die cavity and be the burnishing surface. The production method can realize that one set of mould is adapted to produce polyurethane edge-covering blind plates or edge-covering sieve plates of various models, obviously reduce the production cost of the mould and improve the production efficiency.

Description

A wrapping mold

technical field

An edge-wrapping mold belongs to the technical field of a polyurethane edge-wrapping blind plate mold and a polyurethane edge-wrapping sieve plate mold.

Background technique

Polyurethane edged blind plate and polyurethane edged screen plate are widely used in the field of coal washing in mines and are one of the key components of high-frequency vibrating screen. Polyurethane edged blind panels and polyurethane edged screen panels are generally wrapped with a layer of polyurethane on the edge or the whole.

In the prior art, the method for edging the blind plate or the sieve plate with polyurethane is: placing the blind plate or the sieve plate in a mold with an opening on the top surface, or placing the corresponding bracket in the mold and then placing the blind plate or the sieve plate in the mold. The plate or sieve plate is placed on the support, and the polyurethane liquid is poured into the mold until the polyurethane liquid surface wraps the edge or all of the blind plate surface or the sieve plate surface, so as to realize the polyurethane coating on the edge or the entire outer surface of the blind plate or the sieve plate.

Corresponding to different types of blind plates or sieve plates or edging forms, the corresponding type of mold must be adopted, and the mold is single-fitted, which leads to the need for a variety of different molds to adapt to different blind plates or sieve plates, and the cost of mold manufacturing is high. .

SUMMARY OF THE INVENTION

The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art, and to provide an edge wrapping die that can be adapted to a variety of different blind plates or sieve plates for polyurethane wrapping.

The technical scheme adopted by the utility model to solve the technical problem is: an edge wrapping mold, which is characterized in that it includes a bottom mold and a frame, the frame is formed on the upper surface of the bottom mold to form a cavity, and the frame includes a vertical frame and a horizontal frame, and the vertical frame The horizontal frame is provided with pin holes, the bottom mold is provided with corresponding pin holes, and the vertical frame and the horizontal frame are detachably connected to the bottom mold through positioning pins and pin holes;

The side of the longitudinal frame or the transverse frame facing the inside of the cavity is provided with a side molding structure, and the side away from the inside of the cavity is a flat surface.

The frame is used to form a cavity on the bottom mold, and the sieve plate or blind plate to be edged is placed in the cavity, and after the polyurethane is injected into the mold, the frame is removed to complete the polyurethane edging of the sieve plate or blind plate.

The detachable frame design is adopted, which can correspond to different types of blind plates or sieve plates, and replace the frames of different lengths to obtain mold cavities of different sizes and models, corresponding to different types of blind plates or sieve plates. Various sizes and models of blind plates or sieve plates can be wrapped and formed, which is easy to use, greatly saves the cost of mold production, and is convenient for storage and transportation. In addition, with the detachable frame, the grooves or protrusions on the side facing the inside of the mold cavity correspond to the protrusions or grooves of the molded product, while the side away from the inside of the mold cavity is flat, and the vertical frame or horizontal frame can be turned over to replace the The side facing the inside of the cavity, which in turn enables the production of flat or fluted products. Realize that one set of molds can produce products in two edge forms.

Preferably, there are two vertical frames and two horizontal frames, and the two vertical frames and the two horizontal frames are respectively arranged parallel to each other.

The corresponding common sieve plates or blind plates to be wrapped are generally rectangular, and one vertical frame or one horizontal frame is approached to another vertical frame or horizontal frame, and then the corresponding shorter horizontal frame or vertical frame can be replaced. To reduce the mold cavity model, it is only necessary to replace one set of the vertical frame or horizontal frame, and move one vertical frame or horizontal frame, which simplifies the operation, makes the use more convenient, further reduces the number of different models of the mold frame required, and reduces the cost.

Further preferably, the bottom mold is provided with two rows of bottom mold end pin holes, and the two bottom mold end pin holes are arranged along the length direction of the longitudinal frame; There is a cross frame end pin hole.

Set the horizontal frame as the long side, and the size is longer. When changing the model, remove the positioning pin of one of the horizontal frames, so that the horizontal frame end pin holes of the horizontal frame are respectively along the corresponding bottom die end pin holes below or away from the other. After a horizontal frame is fixed, the width of the cavity between the two horizontal frames is changed, and then the vertical frame with the same width as the cavity can be replaced to obtain the hemming mold with the changed cavity width model.

It only needs to make vertical frames corresponding to different lengths, and the two horizontal frames keep a long length, which can be adapted to various types of blind plates or sieve plates, which further reduces the cost of frame production and the number of mold parts.

Further preferably, the vertical frame is arranged between two horizontal frames, each vertical frame is arranged above a row of pin holes at the bottom die end, and the positions of the pin holes on the vertical frame correspond to the positions of some of the pin holes at the bottom die end.

Make the vertical frame borrow the detachable connection between the bottom mold end pin hole and the bottom mold, further reduce the difficulty of bottom mold making, and make it more convenient to use. If only one of the horizontal borders is moved, it is equivalent to the bottom mold end pin hole close to the other horizontal border. The position is relatively fixed, and the position of the pin hole on the vertical frame close to the other horizontal frame is relatively fixed, which further reduces the technological requirements for making the pin hole on the vertical frame.

Preferably, at least one of the two ends of the vertical frame is provided with upward vertical frame protrusions, the bottom of the vertical frame protrusion is provided with installation openings corresponding to the horizontal frame, the vertical frame protrusions are arranged on the upper surface of the horizontal frame, and the vertical frame protrusions are arranged on the upper surface of the horizontal frame. The two ends are respectively inserted into the horizontal frame through the installation openings.

The vertical frame in the middle is equivalent to that both ends are closely attached to the middle of the horizontal frame, and if the pin holes at the bottom die end cannot be used to fix it, the horizontal frame is tightly connected by setting the vertical frame protrusions and installation openings at both ends, so that the vertical frame can be tightly connected. It can be close to or away from each other along the horizontal frame and fixed at any position, so as to obtain a mold cavity model with any length in the length direction of the horizontal frame, and the central vertical frame of different lengths can adapt to different distances between the horizontal frames, that is, it can be obtained There are mold cavities of various lengths in the longitudinal direction of the longitudinal frame, thereby obtaining edged blind plates or edged screen plates of various widths and lengths, respectively.

Further preferably, the vertical frame protrusions are provided with pin holes vertically penetrating, the horizontal frame is also provided with pin holes at corresponding positions, and the vertical frame and the horizontal frame are connected to each other through positioning pins and the pin holes.

By setting a plurality of pin holes at different positions in the middle of the horizontal frame, they can be used for the positions of the vertical frame corresponding to the mold cavity of different widths, and the fixing is more firm and stable.

Preferably, it also includes a groove mold, which is arranged in the middle of the mold cavity and is detachably connected to the frame or the bottom mold; the groove mold is in the shape of a long strip, and both ends are respectively provided with upward protrusions. The bottom is provided with an installation port corresponding to the frame, the protrusion is arranged on the upper surface of the frame, and the groove die is inserted into the frame through the installation port; the protrusion of the concave mold is provided with a pin hole that penetrates vertically, and the corresponding position on the frame is also provided with a pin The hole, the groove mold and the frame are connected to each other through the positioning pin and the pin hole.

The groove die is used to form grooves on the polyurethane edging blind plate or the edging screen plate. The bottom of the groove die is provided with different types of protrusions or pillars in contact with the bottom die to form through holes or different shapes on the final product. The type of groove, using the protrusions at both ends to match the structure of the installation port, the groove mold is more firmly fixed on the mold, and the groove mold can also be replaced with a variety of different fixing positions by using multiple pin holes on the horizontal frame. Produce a variety of different types of polyurethane edging screen or blind plate. The groove molds of different lengths are used to correspond to the mold cavities of different widths.

Preferably, the bottom mold is further provided with a groove, and a part of the groove opening is arranged below the frame.

After the product is formed, a warping roller can be used to insert the groove and lift the frame to remove the frame to achieve demoulding, which is more convenient for demoulding and improves production efficiency.

Compared with the prior art, the utility model has the beneficial effects as follows: a set of molds can be adapted to various types of blind plates or sieve plates, and different types of products can be produced only by replacing the corresponding frame; Only adjust the position of one set of frames and replace the length of the other two frames to realize the replacement of the mold cavity model, the mold production cost is low, and the replacement of the matching model is convenient.

Description of drawings

Fig. 1 is the axonometric view of the hemming die of Example 1.

Figure 2 is an axonometric view of the bottom mold.

Figure 3 is an axonometric view of the horizontal frame.

Figure 4 is an axonometric view of a long vertical frame.

Figure 5 is an axonometric view of a long groove die.

FIG. 6 is an axonometric view of the hemming mold after turning over the long vertical frame in Example 1. FIG.

Fig. 7 is the axonometric view of the hemming die of Example 2.

FIG. 8 is an axonometric view of the hemming die in Example 3. FIG.

FIG. 9 is an isometric view of the hemming die of Example 4. FIG.

Among them, 1. Bottom mold; 2. Long vertical frame; 3. Horizontal frame; 4. Long groove mold; 5. Positioning pin; 6. Short vertical frame; 7. Short groove mold; 8. Long vertical frame in the middle ;9. Short longitudinal frame in the middle; 11. Pin hole at bottom die end; 12. Pin hole in bottom die; 13. V-shaped groove; 21. Pin hole in longitudinal frame; 22. Groove in longitudinal frame; 31. Pin holes at the end of the horizontal frame; 32. Pin holes in the horizontal frame; 41. Concave die protrusions; 42. Concave die pin holes;

Detailed ways

The present utility model will be further described below in conjunction with accompanying drawings 1 to 9. Fig. 1 is the best embodiment of the present utility model.

Example 1

With reference to accompanying drawing 1～5: a kind of hemming mould, comprises bottom mould 1, long vertical frame 2, horizontal frame 3 and long groove mould 4, long vertical frame 2 and horizontal frame 3 respectively have two, in bottom mould 1 The upper surface encloses a rectangular mold cavity, the long groove mold 4 is in the shape of a long rod, and the two ends are detachably connected to the horizontal frame 3 respectively.

Referring to Figures 2 to 3: the upper surface of the bottom mold 1 is provided with a plurality of bottom mold end pin holes 11, the bottom mold end pin holes 11 are arranged in two rows corresponding to the direction of the two long longitudinal frames 2, and the two rows of bottom mold end pin holes are arranged. 11 corresponds to the two ends of the horizontal frame 3 in the direction of the horizontal frame 3, respectively, and the two ends of the horizontal frame 3 correspond to the positions of the pair of bottom die end pin holes 11. There are also pin holes 32 in the horizontal frame passing through between the pin holes, and there are also pin holes 12 in the bottom mold between the two pairs of bottom mold end pin holes 11 corresponding to both ends of the two rows of bottom mold end pin holes 11 . The middle pin hole 12 corresponds to the position of the pin hole 32 in the horizontal frame, and the horizontal frame 3 is detachably connected to the bottom mold through the positioning pin 5 through the pin hole 31 at the end of the horizontal frame and the pin hole 11 at the bottom mold end.

There are also two V-shaped grooves 13 on the bottom mold 1, which are parallel to one of the bottom mold end pin holes 11. The opening part of the V-shaped groove 13 is correspondingly arranged under the long longitudinal frame 2, and the other part of the opening is located outside the mold cavity, which is convenient for The cocking stick is inserted into the cocked long vertical frame 2 from the remaining opening part to facilitate demoulding.

Referring to Figure 4: each long vertical frame 2 is provided with vertical frame pin holes 21 at the positions corresponding to the three bottom die end pin holes 11, and the positioning pins 5 are used to sequentially pass through the vertical frame pin holes 21 and the corresponding bottom die The end pin hole 11 connects the long longitudinal frame 2 and the bottom mold 1; and the lower side of the side of the long longitudinal frame 2 facing the mold cavity is provided with a longitudinal frame groove 22, and the longitudinal frame groove 22 is on the side facing the mold cavity. There are also vertical frame bosses 23 for forming corresponding protrusions and grooves of the everted edge on the edge of the product.

Referring to accompanying drawing 5: both ends of the long groove die 4 are provided with upward concave die projections 41, the bottom of the concave die projections 41 is provided with a mounting opening corresponding to the horizontal frame 3, and the female die projections 41 are arranged on the upper surface of the horizontal frame 3 , the two ends of the long groove die 4 are respectively inserted into the two horizontal frames 3 through the installation openings, and the concave die protrusions 41 at both ends are provided with concave die pin holes 42 corresponding to the pin holes 32 in the horizontal frame, and the long groove die 4 There is a gap between the bottom and the bottom mold 1, and the bottom of the long groove mold 4 is evenly provided with three column protrusions, and the bottom of the three column protrusions is in close contact with the bottom mold 1. After the positioning pin 5 passes through the groove pin hole 42 Then pass through the pin hole 32 in the horizontal frame and the pin hole 12 in the bottom mold in sequence to connect the long groove mold 4 , the horizontal frame 3 and the bottom mold 1 .

The long groove mold 4 divides the mold cavity into two interconnected chambers, and the gap between the long groove mold 4 and the bottom mold 1 forms the polyurethane connection part between the blind plates or sieve plates corresponding to the two chambers, The column protrusions correspond to the mounting through holes formed on the polyurethane of the connecting part.

The upper end of the positioning pin 5 is provided with heat insulating rubber, and the surface of the heat insulating rubber is provided with a gear-shaped protrusion.

The length of the horizontal frame 3 is about 1220mm, the length of the long and vertical frame 2 is about 610mm, and the length of the long groove mold is about 610mm. The mold 4 divides the cavity into two corresponding 610*610mm models from the middle of the horizontal frame 3, and places corresponding brackets in the two mold cavities respectively. There is a certain gap between, pour polyurethane into the mold cavity, and after wrapping and molding, pull out the positioning pin 5 from above, use the warping roller to lift the long vertical frame 2 from the V-shaped groove 13, and remove the horizontal frame 3 and the long groove. Mold 4, after demoulding is completed, is cast and formed by two 610*610mm sieve plates, and a 610*1220mm edging sieve plate after urethane edging.

Referring to Figure 6: In addition, the surface of the other side of the long longitudinal frame 2 opposite to the inner side of the cavity is flat. In other embodiments of the present utility model, the flat side can be turned toward the interior of the cavity by turning over the long longitudinal frame 2. At this time, the side provided with the longitudinal frame groove 22 faces the outside of the mold cavity, so that a hemming product with a flat edge can be formed, and two kinds of forming switching of the same mold can be realized.

Example 2

Referring to accompanying drawing 7: a kind of hemming mould, on the basis of embodiment 1, the long vertical frame 2 is replaced with a short vertical frame 6, the long groove mold 4 is replaced with a short groove mold 7, and one of the two horizontal frames 3 is replaced with a short groove mold 7. The ends are respectively connected to the bottom mold 1 along the corresponding bottom pin holes 11 of the bottom mold end close to the other horizontal frame 3 and then connected to the bottom mold 1. After the horizontal border 3 is moved, the bottom of the bottom mold is not provided with pin holes 12, so the lower end of the corresponding positioning pin 5 does not need to be inserted. Access to the bottom mold 1.

The length of the short vertical frame 6 is smaller than that of the long vertical frame 2. The short vertical frame 6 is provided with two through pin holes at the positions corresponding to the pin holes 11 of the bottom die end, and the two positioning pins 5 respectively pass through the pin holes and the corresponding pin holes. The corresponding bottom die end pin holes 11 connect the short vertical frame 6 and the bottom die 1. The remaining structure of the short vertical frame 6 is the same as that of the long vertical frame 2. The flat side of the short vertical frame 6 faces the inside of the cavity, that is, the two short vertical frames 6 are flat. Set up on one side.

The length of the short groove die 7 is less than the length of the long groove die 4, the connection structure between the two ends of the short groove die 7 and the horizontal frame 3 is the same as that of the long groove die 4, and the bottom of the short groove die 7 is provided with two column protrusions. Since then, the remaining structure of the short groove die 7 is the same as that of the long groove die 4 .

Other conditions are the same as in Example 1.

The length of the short vertical frame 6 and the short groove die 7 is about 406mm. After the two horizontal frames 3 are close to each other, the long vertical frame 2 is shortened in the direction and changed to a 406mm model. Therefore, the corresponding short vertical frame 6 and the short vertical frame 6 with a smaller length are replaced. The groove mold 4 is enclosed with the horizontal frame 3 to form two mold cavities that are connected to each other. The two mold cavities respectively correspond to a sieve plate or blind plate of a size of 406*610mm. After the sieve plate or blind plate is cast in the mold and demolded, a 410*1220mm edge-wrapped sieve panel or edge-wrapped blind panel is obtained by casting and forming two 410*610mm sieve panels or blind panels and edging with polyurethane. .

This process only needs to replace two longitudinal frames and one groove mold, which reduces the cost by more than 70% compared to replacing the entire mold.

Example 3

Referring to accompanying drawing 8: a kind of hemming mould, on the basis of embodiment 1, one of the long longitudinal frames 2 is replaced with a middle long longitudinal frame 8, the long groove mould 4 is not provided, and the middle long longitudinal frame 8 is placed in the other direction. A long vertical frame 2 is approached to the position of the original long groove mold 4 .

Both ends of the central long vertical frame 8 are respectively provided with upward vertical frame protrusions 81, the bottom of the vertical frame protrusion 81 is provided with an installation opening corresponding to the horizontal frame 3, the vertical frame protrusion 81 is arranged on the upper surface of the horizontal frame 3, and the middle The two ends of the long vertical frame 8 are respectively inserted into the horizontal frame 3 through the installation opening, and the vertical frame protrusions 81 are provided with pin holes corresponding to the pin holes 32 in the horizontal frame, and the positioning pins 5 pass through the pin holes and the horizontal frame. The pin holes 32 connect the long longitudinal frame 8 and the horizontal frame 3 in the middle.

The rest of the structure or connection mode is the same as that of Embodiment 1.

The length of the middle long vertical frame 8 is about 610mm. After the two vertical frames are close to each other, the middle long vertical frame 8, the long vertical frame 2 and the horizontal frame 3 are enclosed to form a mold cavity, and the formed mold cavity corresponds to the screen plate or blind plate The model is changed to correspond to a 610*610mm model. According to the method of Example 1, the corresponding type of sieve plate or blind plate is placed in the mold cavity for casting and molding, and after demoulding, a 610*610mm polyurethane edge blind plate is obtained. or sieve plate.

Example 4

Referring to accompanying drawing 9: a hemming die, on the basis of Embodiment 3, after the horizontal frame 3 is close to each other and is connected with the bottom mould 1 in the form of Embodiment 2, the middle long vertical frame 3 is replaced with a shorter middle frame. The connection structure between the two ends of the vertical frame 9 and the horizontal frame 3 remains unchanged. The other long vertical frame 2 is replaced with a short vertical frame 6. The length of the short vertical frame 9 in the middle is about 406mm, and the corresponding 410*610mm model can be obtained. The mold cavity of the blind plate or the screen plate, and then the corresponding type of polyurethane edge screen plate or blind plate can be poured.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to change or remodel to equivalent changes. Equivalent Example. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solutions of the present invention still belong to the protection scope of the technical solutions of the present invention.

Claims (8)

1. A mould of borduring which characterized in that: the die comprises a bottom die (1) and a frame, wherein the frame surrounds the upper surface of the bottom die (1) to form a die cavity, the frame comprises a longitudinal frame and a transverse frame (3), pin holes are formed in the longitudinal frame and the transverse frame (3), corresponding pin holes are formed in the bottom die (1), and the longitudinal frame and the transverse frame (3) are detachably connected to the bottom die (1) through a positioning pin (5) and the pin holes;

the side edge molding structure is arranged on one side, facing the inside of the die cavity, of the longitudinal frame or the transverse frame (3), and the side surface, far away from the inside of the die cavity, of the longitudinal frame or the transverse frame is a flat surface.

2. A hemming die according to claim 1, wherein: the longitudinal frames and the transverse frames (3) are respectively provided with two, and the two longitudinal frames and the two transverse frames (3) are respectively arranged in parallel.

3. A hemming die according to claim 2, wherein: two rows of bottom die end pin holes (11) are formed in the bottom die (1), and the two rows of bottom die end pin holes (11) are arranged along the length direction of the longitudinal side frame; two transverse frame end pin holes (31) are respectively arranged at the two ends of the transverse frame (3) corresponding to the two rows of bottom die end pin holes (11).

4. A hemming die according to claim 3 wherein: the longitudinal frames are arranged between the two transverse frames (3), each longitudinal frame is arranged above a row of bottom die end pin holes (11), and the pin hole positions on the longitudinal frames correspond to the pin holes (11) at the bottom die ends of parts.

5. A hemming die according to claim 1, wherein: at least one indulge the frame both ends be equipped with ascending vertical frame arch (81) respectively, indulge frame arch (81) bottom and be equipped with the installing port that corresponds with horizontal frame (3), indulge frame arch (81) and set up in horizontal frame (3) upper surface, indulge the frame both ends and pass through installing port grafting respectively and violently frame (3).

6. A hemming die of claim 5 wherein: indulge frame arch (81) on be equipped with the pinhole that vertically runs through, correspond the position and also be equipped with the pinhole on horizontal frame (3), indulge frame and horizontal frame (3) and pass through locating pin (5) and pinhole interconnect.

7. A hemming die according to claim 1, wherein: the die also comprises a groove die, wherein the groove die is arranged in the middle of the die cavity and is detachably connected with the frame or the bottom die (1); the groove die is in a strip shape, two ends of the groove die are respectively provided with an upward bulge, the bottom of each bulge is provided with a mounting opening corresponding to the frame, the bulge is arranged on the upper surface of the frame, and the groove die is inserted into the frame through the mounting openings; the female die bulge is provided with a vertically penetrating pin hole, the corresponding position on the frame is also provided with a pin hole, and the groove die and the frame are connected with each other through a positioning pin (5) and the pin hole.

8. A hemming die according to claim 1, wherein: the bottom die (1) is also provided with a groove, and part of an opening of the groove is arranged below the frame.

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