Extrusion die head

Abstract

The utility model discloses an extrusion die head, belongs to the extrusion die head field, an extrusion die head comprises a die head body, mounting seats, a bearing piece, a cross bar and a barrier strip, the front side wall and the rear side wall of the die head body are both detachably connected with two groups of mounting seats, each group of mounting seats comprises two mounting seats distributed on the left side and the right side of the die head body, a plurality of bearing pieces are arranged on the mounting base at intervals in the length direction of the mounting base, the bearing pieces are detachably connected with the mounting base, the transverse strip is detachably arranged on the bearing pieces, the blocking strip is detachably arranged on the transverse strip, an extrusion channel is formed in the bottom of the die head body, and the top wall of the blocking strip abuts against the bottom wall of the extrusion channel to block part of the extrusion channel. According to the extrusion die head disclosed by the utility model, the sheet extrusion width can be adjusted on the premise of not changing the extrusion channel structure of the original die head body, more materials are saved, and the applicability is high.

Description

Technical Field

[0001] The utility model belongs to the field of extrusion dies, and particularly relates to an extrusion die. Background Art

[0002] An extrusion die, also known as an extrusion machine die head, is an important part in the production process of an extruder. It is mainly used to form heated and melted plastic materials through a specific structure to obtain plastic products with required shapes, such as plastic pipes, plates, films, etc.

[0003] An infiltration extrusion die head for producing high-strength coated sheet products with the application number of CN201921542825.0 includes a left baffle and a right baffle. A preheating body is arranged between the left baffle and the right baffle. An upper die body, an upper intermediate die body, a lower intermediate die body and a lower die body are respectively arranged in front of the preheating body from top to bottom. A die lip is arranged at the intersection of the front ends of the upper intermediate die body and the lower intermediate die body. An upper feed port and an upper flow channel are arranged between the upper die body and the upper intermediate die body. A lower feed port and a lower flow channel are arranged between the lower intermediate die body and the lower die body. A wavy melt infiltration channel is arranged between the upper intermediate die body and the lower intermediate die body. A base material channel is arranged on the preheating body. The base material passes through the base material channel and converges with the molten plastic in the upper flow channel and the lower flow channel, then enters the wavy melt infiltration channel for full mixing and infiltration, and finally is extruded from the die lip. The width of its extrusion channel is fixed, and the width of the extruded sheet is fixed, so the width of the extruded sheet cannot be adjusted, and the applicability is low. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an extrusion die to overcome at least one of the above defects in the prior art.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] An extrusion die provided by the utility model includes a die head body, mounting seats, supporting members, cross bars, and retaining bars. Two groups of mounting seats are detachably connected to the front and rear side walls of the die head body. Each group of mounting seats includes two mounting seats distributed on the left and right sides of the die head body. A number of supporting members are arranged at intervals along the length direction of the mounting seats. The supporting members are detachably connected to the mounting seats. The cross bars are detachably arranged on the supporting members. The retaining bars are detachably arranged on the cross bars. The bottom of the die head body has an extrusion channel. The top wall of the retaining bar abuts against the bottom wall of the extrusion channel to block part of the extrusion channel.

[0007] Preferably, it further includes first bolts. A number of first threaded grooves are provided on the front and rear side walls of the die head body. The first bolts pass through the mounting seats and are screwed with the first threaded grooves to detachably connect the mounting seats to the die head body.

[0008] Preferably, it further includes a second bolt. The outer side wall of the mounting seat has an extension portion, and both the left and right side walls of the die head body have second threaded grooves. The second bolt passes through the extension portion and is screwed into the second threaded groove, detachably connecting the extension portion to the die head body.

[0009] Preferably, the supporting member includes a first nut, a screw rod, a second nut, and a supporting bracket. A plurality of first through holes are spaced along the length direction on the bottom wall of the mounting seat, a second through hole is provided on the top wall of the supporting bracket, the bottom of the screw rod sequentially passes through the first nut, the first through hole, and the second through hole, and is screwed into the second nut. The first nut is located above the bottom wall of the mounting seat and abuts against the bottom wall of the mounting seat, and the second nut is located below the top wall of the supporting bracket and abuts against the top wall of the supporting bracket.

[0010] Preferably, the supporting bracket includes a connecting portion, an inclined portion, and a supporting portion. The front and rear ends of the supporting portion are inclinedly connected with inclined portions, and the top end of each inclined portion is connected with a connecting portion. The second through hole is provided in the connecting portion.

[0011] Preferably, a first card slot is provided on the top of the supporting portion, and the cross bar is inserted into the first card slot.

[0012] Preferably, a second card slot is provided on the top of the cross bar, and a card bar is provided at the bottom of the retaining bar. The card bar is inserted into the second card slot.

[0013] Preferably, the bottom wall of the supporting bracket has reinforcing ribs.

[0014] Preferably, a first gasket is provided between the first nut and the bottom wall of the mounting seat, and a second gasket is provided between the second nut and the top wall of the supporting bracket.

[0015] Preferably, the retaining bar is made of Teflon, and the cross bar is made of copper.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. Without changing the extrusion channel structure of the original die head body, it can adjust the extrusion width of the sheet material, which is more material-saving and has high applicability.

[0018] 2. Through the setting of the cross bar, the acting forces of multiple supporting brackets act on the cross bar, and then the force is evenly applied to the retaining bar through the cross bar, rather than directly acting on the retaining bar by multiple supporting brackets, avoiding the rupture of the retaining bar.

[0019] 3. By adopting the setting of the screw rod combined with the first nut and the second nut, the installation and position adjustment of the supporting bracket are realized.

[0020] 4. Through the setting of the first card slot, it is not only beneficial to the guiding installation of the cross bar, but also avoids the front and rear offset of the cross bar, ensuring the accuracy of the installation position of the cross bar.

[0021] 5. Through the cooperation of the second card slot and the card strip, it is not only beneficial to the guiding installation of the retaining strip, but also avoids the front-back offset of the retaining strip, ensures the accuracy of the installation position of the retaining strip, and guarantees the occlusion of the extrusion channel.

[0022] 6. The bottom wall of the support bracket has reinforcing ribs, which improve the strength and stiffness of the support bracket and prevent deformation.

[0023] 7. Through the setting of the first gasket, the pressure of the first nut on the mounting seat is dispersed, and loosening is prevented at the same time; through the setting of the second gasket, the pressure of the second nut on the support bracket is dispersed, and loosening is prevented at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the front view structural schematic diagram of the first embodiment of the present utility model.

[0025] Figure 2 It is Figure 1 The enlarged structural schematic diagram of A in

[0026] Figure 3 It is the matching structural schematic diagram of the support member and the mounting seat in the first embodiment of the present utility model.

[0027] Figure 4 It is Figure 3 The enlarged structural schematic diagram of B in

[0028] Figure 5 It is Figure 3 The enlarged structural schematic diagram of C in

[0029] Figure 6 It is the left view structural schematic diagram of the first embodiment of the present utility model.

[0030] Figure 7 It is Figure 6 The enlarged structural schematic diagram of D in

[0031] Figure 8 It is the partial bottom view structural schematic diagram of the first embodiment of the present utility model.

[0032] Figure 9 It is the partial left view structural schematic diagram of the support bracket in the first embodiment of the present utility model.

[0033] Figure 10 It is the left view structural schematic diagram of the horizontal bar in the first embodiment of the present utility model.

[0034] Figure 11 It is the left view structural schematic diagram of the retaining strip in the first embodiment of the present utility model.

[0035] Figure 12 It is the matching structural schematic diagram of the support member, the first gasket, the second gasket, and the mounting seat in the second embodiment of the present utility model.

[0036] Figure 13 It is a front view structural schematic diagram of the third embodiment of the present utility model.

[0037] The reference signs in the drawings are: 1 - die head body, 2 - mounting seat, 3 - supporting member, 4 - cross bar, 5 - retaining bar, 6 - extrusion channel, 7 - first bolt, 8 - first thread groove, 9 - second bolt, 10 - second thread groove, 31 - first nut, 32 - screw rod, 33 - second nut, 34 - supporting bracket, 11 - first through hole, 341 - second through hole, 342 - connecting portion, 343 - inclined portion, 344 - supporting portion, 345 - first card slot, 41 - second card slot, 51 - card strip, 346 - reinforcing rib, 12 - first gasket, 13 - second gasket. Specific embodiments

[0038] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0039] Contents not described in detail in this specification belong to the prior art well known to those skilled in the art. In the description of the present utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for differential description and should not be construed as indicating or implying relative importance.

[0040] Embodiment 1:

[0041] As Figures 1 to 11As shown in the figure, an extrusion die head provided in this embodiment includes a die head body 1, a mounting base 2, a supporting member 3, a cross bar 4, and a retaining bar 5. Two sets of mounting bases 2 are detachably connected to the front and rear side walls of the die head body 1. Each set of mounting bases 2 includes two mounting bases 2 distributed on the left and right sides of the die head body 1. A number of supporting members 3 are arranged at intervals along the length direction of the mounting base 2. The supporting member 3 is detachably connected to the mounting base 2. The cross bar 4 is detachably arranged on the supporting member 3, and the retaining bar 5 is detachably arranged on the cross bar 4. The bottom of the die head body 1 has an extrusion channel 6. The top wall of the retaining bar 5 abuts against the bottom wall of the extrusion channel 6, blocking part of the extrusion channel 6. The cross bar 4 and the retaining bar 5 are supported by the supporting bracket 34, and an upward force is applied to the cross bar 4, so that the retaining bar 5 is pressed tightly against the bottom wall of the extrusion channel 6, blocking the extrusion channel 6. The length of the extrusion channel 6 blocked by the retaining bar 5 is the reduction in width adjusted on the basis of the original extrusion width. The adjustment of the extrusion width can be achieved by replacing the retaining bar 5 with different lengths or directly adjusting the position of the retaining bar 5 to block part of the extrusion channel 6 left and right. Through the setting of the detachable supporting member 3, during adjustment, the supporting member 3 can be loosened, and then the redundant supporting members 3 can be removed or new supporting members 3 can be added according to requirements. After adjusting the position of the retaining bar 5, the supporting member 3 is locked, and the cross bar 4 and the retaining bar 5 are pushed upward to abut against the bottom wall of the extrusion channel 6, completing the adjustment of the extrusion width. The utility model can adjust the extrusion width of the sheet material without changing the structure of the extrusion channel 6 of the original die head body 1, which is more material-saving and has high applicability.

[0042] Among them, it further includes a first bolt 7. The front and rear side walls of the die head body 1 are each provided with a number of first threaded grooves 8. The first bolt 7 passes through the mounting base 2 and is screwed with the first threaded groove 8, detachably connecting the mounting base 2 to the die head body 1. The first threaded groove 8 is the threaded groove existing in the traditional extrusion die head itself. The mounting base 2 is directly installed on the die head body 1 by using the threaded groove of the traditional extrusion die head in cooperation with the first bolt 7, which is convenient for disassembly and assembly.

[0043] Among them, it further includes a second bolt 9. The outer side wall of the mounting base 2 has an extension part. The left and right side walls of the die head body 1 are each provided with a second threaded groove 10. The second bolt 9 passes through the extension part and is screwed with the second threaded groove 10, detachably connecting the extension part to the die head body 1. The second bolt 9 is used to fixedly install the mounting base 2 from the side, and in cooperation with the first bolt 7, the stable installation of the mounting base 2 is realized.

[0044] Among them, the supporting member 3 includes a first nut 31, a screw rod 32, a second nut 33, and a supporting bracket 34. A plurality of first through holes 11 are spaced along the length direction of the bottom wall of the mounting seat 2. A second through hole 341 is formed in the top wall of the supporting bracket 34. The bottom of the screw rod 32 sequentially passes through the first nut 31, the first through hole 11, and the second through hole 341, and is screwed with the second nut 33. The first nut 31 is located above the bottom wall of the mounting seat 2 and abuts against the bottom wall of the mounting seat 2. The second nut 33 is located below the top wall of the supporting bracket 34 and abuts against the top wall of the supporting bracket 34. When it is necessary to loosen the stop bar 5 for adjustment, loosen the first nut 31 and push down the screw rod 32. At this time, the cross plate and the stop bar 5 lose the support of the supporting bracket 34 and move downward away from the extrusion channel 6. When it is necessary to remove the supporting member 3, loosen the first nut 31 until the screw rod 32 is unscrewed, and then pull down the screw rod 32 until the screw rod 32 leaves the first through hole 11, and then it can be taken away. After the screw rod 32 is installed on the mounting seat 2, by screwing the second nut 33, the up and down position of the supporting bracket 34 is adjusted until the supporting bracket 34 moves upward to press the cross bar 4, and further the stop bar 5 moves upward to abut against the bottom wall of the extrusion channel 6. In this way, the setting of the screw rod 32 combined with the first nut 31 and the second nut 33 realizes the installation and position adjustment of the supporting bracket 34. Through the setting of the cross bar 4, the acting forces of multiple supporting brackets 34 act on the cross bar 4, and then the force is evenly applied to the stop bar 5 through the cross bar 4, rather than multiple supporting brackets 34 directly acting on the stop bar 5, avoiding the breakage of the stop bar 5. The material of the stop bar 5 in this embodiment is Teflon, and the material of the cross bar 4 is copper. Teflon has high temperature resistance, corrosion resistance, non-stick properties, and has certain elasticity and toughness to ensure the sealing and shielding of the extrusion channel 6. Copper has a certain deformation ability and can withstand the pressure from the supporting bracket 34 without affecting the extrusion of the stop bar 5.

[0045] Among them, the supporting bracket 34 includes a connecting portion 342, an inclined portion 343, and a supporting portion 344. The front and rear ends of the supporting portion 344 are inclinedly connected with the inclined portion 343, and the top end of each inclined portion 343 is connected with the connecting portion 342. The second through hole 341 is formed in the connecting portion 342. A first card slot 345 is formed in the top of the supporting portion 344, and the cross bar 4 is inserted into the first card slot 345. Through the setting of the first card slot 345, it is not only beneficial to the guiding installation of the cross bar 4, but also avoids the front and rear offset of the cross bar 4, ensuring the accuracy of the installation position of the cross bar 4. A second card slot 41 is formed in the top of the cross bar 4, and the bottom of the stop bar 5 has a card strip 51, and the card strip 51 is inserted into the second card slot 41. Through the cooperation of the second card slot 41 and the card strip 51, it is not only beneficial to the guiding installation of the stop bar 5, but also avoids the front and rear offset of the stop bar 5, ensuring the accuracy of the installation position of the stop bar 5 and ensuring the shielding of the extrusion channel 6.

[0046] Among them, the bottom wall of the supporting bracket 34 has a reinforcing rib 346 to improve the strength and stiffness of the supporting bracket 34 and prevent deformation.

[0047] Embodiment 2:

[0048] As Figure 12 shown, the difference between this embodiment and Embodiment 1 is that:

[0049] There is a first gasket 12 between the first nut 31 and the bottom wall of the mounting seat 2, and there is a second gasket 13 between the second nut 33 and the top wall of the support bracket 34. By providing the first gasket 12, the pressure of the first nut 31 on the mounting seat is dispersed, and at the same time, loosening is prevented. By providing the second gasket, the pressure of the second nut 33 on the support bracket 34 is dispersed, and at the same time, loosening is prevented.

[0050] Embodiment 3:

[0051] As Figure 13 shown, the difference between this embodiment and Embodiment 1 is that:

[0052] The length of the stop bar is shorter than that of the stop bar in Embodiment 1, and the number of support members on each mounting seat is two less than that in Embodiment 1. The final sheet extrusion width is greater than that in Embodiment 1.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An extrusion die head, characterized in that: a die head body, a mounting seat, a supporting member, a cross bar, and a stop bar; Two groups of mounting seats are detachably connected to the front and rear side walls of the die head body; Each group of the mounting seats includes two mounting seats distributed on the left and right sides of the die head body; A plurality of supporting members are arranged at intervals along the length direction of the mounting seat, and the supporting members are detachably connected to the mounting seat; The cross bar is detachably arranged on the supporting member, and the stop bar is detachably arranged on the cross bar; The bottom of the die head body has an extrusion channel, and the top wall of the stop bar abuts against the bottom wall of the extrusion channel to block part of the extrusion channel.

2. The extrusion die head according to claim 1, characterized in that: It further includes a first bolt; A plurality of first threaded grooves are provided on the front and rear side walls of the die head body; The first bolt passes through the mounting seat and is screwed with the first threaded groove to detachably connect the mounting seat to the die head body.

3. The extrusion die head according to claim 1, characterized in that: It further includes a second bolt; The outer side wall of the mounting seat has an extension part; Second threaded grooves are provided on the left and right side walls of the die head body; The second bolt passes through the extension part and is screwed with the second threaded groove to detachably connect the extension part to the die head body.

4. The extrusion die head according to claim 1, characterized in that: The supporting member includes a first nut, a screw rod, a second nut, and a supporting bracket; A plurality of first through holes are provided at intervals along the length direction of the bottom wall of the mounting seat, and a second through hole is provided on the top wall of the supporting bracket; The bottom of the screw rod sequentially passes through the first nut, the first through hole, and the second through hole and is screwed with the second nut; The first nut is located above the bottom wall of the mounting seat and abuts against the bottom wall of the mounting seat, and the second nut is located below the top wall of the supporting bracket and abuts against the top wall of the supporting bracket.

5. The extrusion die head according to claim 4, characterized in that: The supporting bracket includes a connecting part, an inclined part, and a supporting part; The front and rear ends of the supporting part are inclinedly connected with inclined parts, and the top end of each inclined part is connected with a connecting part; The second through hole is provided in the connecting part.

6. The extrusion die head according to claim 5, characterized in that: A first card slot is provided on the top of the supporting part, and the cross bar is inserted into the first card slot.

7. The extrusion die head according to claim 6, characterized in that: A second card slot is provided on the top of the cross bar, and a card strip is provided at the bottom of the stop bar, and the card strip is inserted into the second card slot.

8. The extrusion die head according to claim 4, characterized in that: The bottom wall of the supporting bracket has a reinforcing rib.

9. The extrusion die head according to claim 4, characterized in that: A first gasket is provided between the first nut and the bottom wall of the mounting seat; A second gasket is provided between the second nut and the top wall of the supporting bracket.

10. The extrusion die head according to claim 1, characterized in that: The material of the stop bar is Teflon; The material of the cross bar is copper.

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