Aluminum bar extrusion guide device

By using a two-way lead screw and synchronous belt drive system, the problem of insufficient applicability of existing aluminum rod extrusion guide devices is solved, enabling convenient installation and disassembly. It is suitable for support components of different thicknesses and widths, thus improving the applicability and stability of the device.

CN223629239UActive Publication Date: 2025-12-05GAOZHOU ZHONGLIHENG METAL IND CO LTD
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Patent Information

Application Number
CN202423053229.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-11
Publication Date
2025-12-05
Estimated Expiration
2034-12-11

AI Technical Summary

Technical Problem

Existing aluminum rod extrusion guide devices have limited applicability during installation and cannot adapt to support components of different thicknesses and widths.

Method used

It adopts a two-way screw and synchronous belt drive system, and can be easily installed and disassembled by adjusting the distance between the limit frame and the support base. It is suitable for support components of different thicknesses and widths.

Benefits of technology

It enables flexible installation and disassembly of the aluminum rod extrusion guide device, is applicable to various support components, and improves the applicability and stability of the device.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of aluminum bar processing, and discloses an aluminum bar extrusion guide device which comprises a heat preservation barrel, a first connecting seat is fixed at the lower end of the heat preservation barrel, the lower end of the first connecting seat is rotatably connected with a first two-way lead screw, and the first two-way lead screw is in threaded connection with two limiting frames. A containing cavity is formed in the limiting frame, first sliding grooves are formed in the upper end and the lower end of the containing cavity, second bidirectional lead screws are rotationally connected into the first sliding grooves, two first sliding blocks are connected to the second bidirectional lead screws in a threaded mode, the first sliding blocks are slidably connected into the first sliding grooves, and connecting rods are rotationally connected to the first sliding blocks. The two connecting rods on the two first sliding blocks in the first sliding groove are arranged in a crossed mode, the other ends of the two connecting rods are rotationally connected with the supporting seats, at least two rolling wheels are rotationally connected into the supporting seats, and the rolling wheels on the two supporting seats in the same containing cavity are close to each other. The device is convenient to mount and dismount, and meanwhile, the device can be suitable for supporting pieces with different thicknesses and supporting pieces with different widths.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to aluminum bar processing technical field, concretely relates to aluminum bar extrusion guiding device. BACKGROUND

[0002] Aluminum bar is one kind of aluminum product, and the melting and casting of the aluminum bar includes the processes of melting, purification, impurity removal, gas removal, slag removal and casting. The aluminum bar is generally used for processing aluminum profiles. The aluminum bar is usually placed in a heat preservation barrel for melting, and then the molten aluminum material is extruded into a mold through a push rod. The mold is used to shape the aluminum material. During the processing, the extrusion push rod is fixed at one end of a guide roller, and the mold is fixed at the other end of the guide roller. The heat preservation barrel is connected to the guide roller through sliding. During the extrusion, the heat preservation barrel moves and is connected to the mold through the push rod.

[0003] For example, the aluminum bar extrusion guiding device disclosed in CN215587510U includes a heat preservation barrel. A support plate is fixed to the top end of the heat preservation barrel, and two fixed plates are fixed to the top end of the support plate on both sides. A tray is connected to the surface of each fixed plate in a lifting manner, and a guide roller is connected to the surface of the tray in a sliding manner. The guide roller is used to guide the movement of the heat preservation barrel. A limiting piece is arranged at the bottom end of the heat preservation barrel, and the limiting piece is connected to a hydraulic telescopic rod. The hydraulic telescopic rod is used to drive the movement of the heat preservation barrel. The limiting piece includes a cross bar and a sleeve. Two cross bars are fixed to the side of the heat preservation barrel, and a sleeve is fixed to the bottom end of each cross bar. A hydraulic telescopic rod is fixedly arranged in the two sleeves. The limiting piece further includes a locking plate, a ball and a locking bolt. The bottom end of the sleeve is fixedly connected to the locking plate. The cross section of the locking plate is in the shape of a "U" with a groove at the center. The locking plate is connected to the locking bolt in a matching manner. The ball is connected to the top end and the bottom end of the locking plate in a rolling manner.

[0004] In the above-mentioned scheme, the locking plate is sleeved on the support piece of the workbench and locked by the locking bolt. The ball makes the movement of the heat preservation barrel more convenient. However, the distance between the two locking plates is fixed, and the distance between the upper end and the lower end of the locking plate is also fixed. That is, the thickness of the support piece connected to the locking plate and the maximum width between the two support pieces must be fixed to match the locking plate. Such a structure makes the above-mentioned device less applicable when the thickness of the support piece changes or the maximum width between the two support pieces changes. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the purpose of the present utility model is to provide an aluminum bar extrusion guiding device. The device of the present application is convenient to install and disassemble, and can be applied to support pieces of different thicknesses and support pieces of different widths.

[0006] The purpose of the present utility model can be achieved by the following technical solutions:

[0007] Aluminum rod extrusion guiding device, comprising:

[0008] The heat preservation barrel is fixedly connected with a first connecting seat at the lower end, a first bidirectional screw is arranged below the first connecting seat, the two ends of the first bidirectional screw are rotationally connected with the two ends of the first connecting seat, and the two screw threads of the first bidirectional screw are threadedly connected with limit racks.

[0009] Opposite surfaces of the two limit racks are provided with accommodating cavities, the limit racks at the upper end and the lower end of the accommodating cavities are provided with first sliding grooves, a second bidirectional screw is rotationally connected in the first sliding groove, first sliding blocks are threadedly connected on the two screw threads of the second bidirectional screw, the first sliding blocks are slidingly connected in the first sliding groove, a connecting rod is rotationally connected on the first sliding block, the two connecting rods on the two first sliding blocks in the first sliding groove are cross arranged, the other ends of the two connecting rods are rotationally connected with support seats, at least two rollers are rotationally connected in the support seat, and the rollers on the two support seats in the same accommodating cavity are close to each other.

[0010] The above technical scheme has the following principles and technical effects:

[0011] First, the first bidirectional screw is rotated to move the two limit racks in opposite directions, so that the distance between the two limit racks is greater than the maximum distance of the two side supports of the machining workbench, the support is aligned with the accommodating cavity, the first bidirectional screw is rotated in the opposite direction to move the two limit racks in opposite directions, so that the support is located between the upper and lower support seats of the accommodating cavity, the two first sliding blocks on the same second bidirectional screw are moved in opposite directions by rotating the second bidirectional screw, the two connecting rods push the support seat away from the first sliding block, that is, the two support seats move in opposite directions and close to the support, until the rollers on the two support seats contact the support. In this way, the device is convenient to install and disassemble with the support, and can be suitable for supports of different thicknesses and supports of different widths.

[0012] Further, one end of the first bidirectional screw is fixedly connected with a first rotating piece.

[0013] Further, the two sides of the first bidirectional screw are provided with first guide rods, the first guide rods penetrate the limit racks to slidingly connect the limit racks with the first guide rods, and the two ends of the first guide rods are fixedly connected with the two ends of the first connecting seat.

[0014] Further, the same end of the two second bidirectional screws on the same limit rack is fixedly connected with a first synchronous pulley, and the two first synchronous pulleys are jointly sleeved with a meshing synchronous belt.

[0015] Further, the synchronous belt is also engaged with a second synchronous pulley, which is rotationally connected with the side wall of the limiting frame, and a second rotating member is fixedly connected with the side of the second synchronous pulley.

[0016] Further, a second sliding groove is formed in the side wall of the limiting frame, and a second sliding block is fixedly connected with the side of the supporting seat and slidingly connected in the second sliding groove.

[0017] Further, a first air cylinder is further included, and a piston rod of the first air cylinder is fixedly connected with the first connecting seat.

[0018] Further, a second connecting seat is fixedly connected with the upper end of the heat preservation barrel, a third bidirectional lead screw is arranged above the second connecting seat, two ends of the third bidirectional lead screw are rotationally connected with two ends of the second connecting seat, a moving block is threadedly connected with a thread segment of the third bidirectional lead screw in different rotation directions, a second air cylinder is fixedly connected with the upper end of the moving block, a tray is fixedly connected with a piston rod of the second air cylinder, an inner concave arc-shaped groove is formed in the upper end surface of the tray, a guide roller is slidingly connected in the arc-shaped groove, a guide groove is formed in the lower end of the guide roller along the length direction of the guide roller, and a guide block is fixedly connected in the arc-shaped groove and is matchedly connected in the guide groove.

[0019] Further, one end of the third bidirectional lead screw is fixedly connected with a third rotating member.

[0020] Further, a second guide rod is arranged on the two sides of the third bidirectional lead screw, the second guide rod penetrates through the moving block so that the moving block is slidingly connected with the second guide rod, and two ends of the second guide rod are fixedly connected with two ends of the second connecting seat.

[0021] The nouns, conjunctions or adjectives involved in the above technical solutions are explained as follows:

[0022] Fixed connection refers to the connection of parts or components after being fixed, without any relative movement. It is divided into two types: detachable connection and non-detachable connection.

[0023] (1) Detachable connection refers to the connection of parts or components by using screws, splines, wedge pins, etc. This connection mode can be disassembled during maintenance, and the parts will not be damaged. However, the specifications of the connecting parts (such as the length of the bolts, keys, and wedge pins) must be correct, and the fastening must be appropriate.

[0024] (2) Non-detachable connection mainly refers to welding, riveting, and tenon connection. Since maintenance or replacement requires forging, sawing, or oxygen cutting to disassemble, the parts generally cannot be used twice. At the same time, attention should be paid to the process quality, technical detection, and remedial measures (such as correction and polishing) during connection.

[0025] Threaded connection refers to the use of threaded parts (or threaded parts of the connected parts) to connect the connected parts into a body.

[0026] Sliding connection refers to the contact between two objects, but not fixed, and the two can slide relative to each other.

[0027] Rotary connection refers to the connection between parts that allows parts to rotate relative to each other.

[0028] The beneficial effects of the utility model are:

[0029] First, rotate the first bidirectional screw to move the two limit racks in opposite directions, so that the distance between the two limit racks is greater than the maximum distance of the two side supports of the machining workbench, align the support with the accommodation cavity, and rotate the first bidirectional screw in the opposite direction to move the two limit racks in opposite directions, so that the support is located between the upper and lower support seats of the accommodation cavity. By rotating the second bidirectional screw, the two first sliders on the same second bidirectional screw move towards each other, the two connecting rods push the support seats away from the first slider, that is, the two support seats move towards each other and approach the support, until the rollers on the two support seats contact the support. This way makes the device convenient to install and disassemble with the support, and can be applied to supports of different thicknesses and supports of different widths. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, for those skilled in the art, other drawings can also be obtained without creative labor.

[0031] Figure 1 It is the overall structure schematic diagram of the embodiment of the utility model;

[0032] Figure 2 It is the second connecting seat part structure schematic diagram of the embodiment of the utility model;

[0033] Figure 3 It is the limit rack part structure schematic diagram of the embodiment of the utility model;

[0034] Figure 4 It is the roller part structure schematic diagram of the embodiment of the utility model;

[0035] Figure 5 It is the limit rack structure schematic diagram of the embodiment of the utility model;

[0036] Figure 6 It is the guide roller part structure schematic diagram of the embodiment of the utility model. DETAILED DESCRIPTION

[0037] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0038] In the description of the present application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation of the present application.

[0039] According to the concept of the present application, an embodiment of an aluminum rod extrusion guide device is described herein. Figures 1 to 6 Specifically, the aluminum rod extrusion guide device is configured in a split structure, which has the mutual cooperation of the heat preservation barrel 1, the limiting frame 4, the roller 11 and the like structure, first rotate the first bidirectional screw rod 3 to move the two limiting frames 4 in opposite directions, so that the distance between the two limiting frames 4 is greater than the maximum distance of the two side supports 100 of the processing workbench, align the support 100 with the accommodating cavity 5, rotate the first bidirectional screw rod 3 in the opposite direction to move the two limiting frames 4 towards each other, so that the support 100 is located between the upper and lower support seats 10 of the accommodating cavity 5, and by rotating the second bidirectional screw rod 7, the two first sliding blocks 8 on the same second bidirectional screw rod 7 move towards each other, the two connecting rods 9 push the support seat 10 away from the first sliding block 8, that is, the two support seats 10 move towards each other to approach the support 100, until the rollers 11 on the two support seats 10 contact the support 100, in this way, the device is convenient to install and disassemble with the support 100, and at the same time, it can be applied to supports 100 of different thicknesses and supports 100 of different widths.

[0040] As shown in Figures 1 to 6 The aluminum rod extrusion guide device comprises:

[0041] The heat preservation barrel 1 is fixedly connected with the first connecting seat 2 at the lower end, the first bidirectional screw rod 3 is arranged below the first connecting seat 2, the two ends of the first bidirectional screw rod 3 are rotatably connected with the two ends of the first connecting seat 2, and the two different screw thread segments of the first bidirectional screw rod 3 are threadedly connected with the limiting frames 4;

[0042] The opposite faces of the two limiting racks 4 are provided with accommodating cavities 5, the upper end and the lower end of each of the accommodating cavities 5 are provided with a first sliding groove 6 on the limiting rack 4, a second bidirectional screw rod 7 is rotationally connected in the first sliding groove 6, a first sliding block 8 is threadedly connected on the two screw sections of the second bidirectional screw rod 7 with different rotation directions, the first sliding block 8 is slidingly connected in the first sliding groove 6, a connecting rod 9 is rotationally connected on the first sliding block 8, the two connecting rods 9 on the two first sliding blocks 8 in the first sliding groove 6 are cross arranged, the other ends of the two connecting rods 9 are rotationally connected with a supporting seat 10, at least two rollers 11 are rotationally connected in the supporting seat 10, and the rollers 11 on the two supporting seats 10 in the same accommodating cavity 5 are close to each other.

[0043] In use, first, the first bidirectional screw rod 3 is rotated to move the two limiting racks 4 in opposite directions, so that the distance between the two limiting racks 4 is greater than the maximum distance of the two side supporting members 100 of the processing workbench, the supporting member 100 is aligned with the accommodating cavity 5, the first bidirectional screw rod 3 is rotated in the opposite direction to move the two limiting racks 4 in opposite directions, so that the supporting member 100 is located between the upper and lower supporting seats 10 of the accommodating cavity 5, the two first sliding blocks 8 on the same second bidirectional screw rod 7 are moved in opposite directions by rotating the second bidirectional screw rod 7, the two connecting rods 9 push the supporting seat 10 away from the first sliding block 8, that is, the two supporting seats 10 are moved in opposite directions and close to the supporting member 100, until the rollers 11 on the two supporting seats 10 are in contact with the supporting member 100, in this way, the device is convenient to install and disassemble with the supporting member 100, and can be suitable for supporting members 100 with different thicknesses and supporting members 100 with different widths.

[0044] In an embodiment of the utility model, one end of the first bidirectional screw rod 3 is fixedly connected with a first rotating piece 12. By rotating the first rotating piece 12, the operator can rotate the first bidirectional screw rod 3 to adjust the distance between the two limiting racks 4.

[0045] In an embodiment of the utility model, the two sides of the first bidirectional screw rod 3 are provided with first guide rods 13, the first guide rods 13 penetrate through the limiting racks 4 to make the limiting racks 4 slidingly connected with the first guide rods 13, and the two ends of the first guide rods 13 are fixedly connected with the two ends of the first connecting seat 2. The first guide rods 13 improve the stability of the limiting racks 4 when moving, thereby improving the stability of the whole device.

[0046] In an embodiment of the utility model, the same end of the two second bidirectional screw rods 7 on the same limiting rack 4 is fixedly connected with a first synchronous pulley 14, and the two first synchronous pulleys 14 are jointly sleeved with a meshing synchronous belt 15. When the synchronous belt 15 is driven, the two first synchronous pulleys 14 can be simultaneously driven to rotate, thereby simultaneously driving the two second bidirectional screw rods 7 to rotate, and thereby driving the two supporting seats 10 to move in opposite directions and close to the supporting member 100.

[0047] In one embodiment of the utility model, still meshed connection second synchronous pulley 16 is in synchronous belt 15, second synchronous pulley 16 is rotatably connected with the side wall of limiting frame 4, and the side of second synchronous pulley 16 is fixedly connected with second rotating part 17. The operator drives second synchronous pulley 16 to rotate by rotating second rotating part 17, and second synchronous pulley 16 drives synchronous belt 15 to drive, and then realizes the rotation of two first synchronous pulleys 14, and then drives two second bidirectional leadscrews 7 to rotate, and then drives two support seats 10 to move towards and close support piece 100.

[0048] In one embodiment of the utility model, the side wall of limiting frame 4 is provided with second sliding groove 18, and the side of support seat 10 is fixedly connected with second sliding block 19, and second sliding block 19 is slidably connected in second sliding groove 18. Such setting makes the stability of support seat 10 improved when support seat 10 moves.

[0049] In one embodiment of the utility model, first cylinder 20 is further included, and the piston rod of first cylinder 20 is fixedly connected with first connecting seat 2. First cylinder 20 is used to push the whole device to move.

[0050] In one embodiment of the utility model, the upper end of heat preservation bucket 1 is fixedly connected with second connecting seat 21, the upper portion of second connecting seat 21 is provided with third bidirectional leadscrew 22, the two ends of third bidirectional leadscrew 22 are rotatably connected with the two ends of second connecting seat 21, the two threads of different rotation directions of third bidirectional leadscrew 22 are threadedly connected with moving block 23, the upper end of moving block 23 is fixedly connected with second cylinder 24, the piston rod of second cylinder 24 is fixedly connected with tray 25, the upper end surface of tray 25 is provided with concave arc-shaped groove 26, guiding roller 27 is slidably connected in arc-shaped groove 26, guiding groove 28 is formed in the lower end of guiding roller 27 along the length direction thereof, guiding block 29 is fixedly connected in arc-shaped groove 26, and guiding block 29 is connected in guiding groove 28 in a matched mode. Guiding roller 27 is used to guide the movement of heat preservation bucket 1, and second cylinder 24 is used to adjust the height of tray 25, so that tray 25 is more tightly attached to guiding roller 27, and guiding roller 27 is placed more stably.

[0051] In one embodiment of the utility model, one end of third bidirectional leadscrew 22 is fixedly connected with third rotating part 30. By rotating third rotating part 30, the operator can rotate third bidirectional leadscrew 22 to adjust the distance between two trays 25, so that the distance between two trays 25 is the same as that between two guiding rollers 27.

[0052] In the embodiment of the utility model, two sides of third bidirectional screw rod 22 are provided with second guide rod 31, second guide rod 31 penetrates movable block 23 to make movable block 23 and second guide rod 31 sliding connection, and two ends of second guide rod 31 are fixedly connected with two ends of second connecting seat 21.The setting of second guide rod 31 improves the stability of movable block 23 when moving, and further improves the stability of the whole device.

[0053] In the description of the present specification, the description referring to the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0054] The basic principle, main features and advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. An aluminium bar extrusion guide device, characterized in that, Include: The heat preservation bucket (1), the lower end of the heat preservation bucket (1) is fixedly connected with the first connecting seat (2), the lower side of the first connecting seat (2) is provided with the first bidirectional screw rod (3), the two ends of the first bidirectional screw rod (3) are rotatably connected with the two ends of the first connecting seat (2), the two different rotation direction thread segments of the first bidirectional screw rod (3) are all threadedly connected with the limiting frame (4); The opposite surfaces of the two limiting frames (4) are all provided with containing cavities (5), the containing cavities (5) are all provided with first sliding grooves (6) on the upper end and the lower end of the limiting frame (4), the first sliding grooves (6) are rotatably connected with the second bidirectional screw rod (7), the two different rotation direction thread segments of the second bidirectional screw rod (7) are all threadedly connected with the first sliding block (8), the first sliding block (8) is slidably connected in the first sliding groove (6), the first sliding block (8) is rotatably connected with the connecting rod (9), the two connecting rods (9) on the two first sliding blocks (8) in the first sliding groove (6) are cross arranged, the other ends of the two connecting rods (9) are rotatably connected with the supporting seat (10), at least two rollers (11) are rotatably connected in the supporting seat (10), the rollers (11) on the two supporting seats (10) in the same containing cavity (5) are close to each other.

2. The aluminum rod extrusion guide of claim 1, wherein, One end of the first bidirectional screw rod (3) is fixedly connected with the first rotating piece (12).

3. The aluminum rod extrusion guide of claim 2, wherein, The two sides of the first bidirectional screw rod (3) are provided with the first guide rod (13), the first guide rod (13) penetrates the limiting frame (4) so that the limiting frame (4) is slidably connected with the first guide rod (13), the two ends of the first guide rod (13) are fixedly connected with the two ends of the first connecting seat (2).

4. The aluminum rod extrusion guide of claim 3, wherein, The same end of the two second bidirectional screw rods (7) on the same limiting frame (4) is fixedly connected with the first synchronous pulley (14), the two first synchronous pulleys (14) are jointly sleeved with the meshing synchronous belt (15).

5. The aluminum rod extrusion guide of claim 4, wherein, The synchronous belt (15) is also meshingly connected with the second synchronous pulley (16), the second synchronous pulley (16) is rotatably connected with the side wall of the limiting frame (4), the side surface of the second synchronous pulley (16) is fixedly connected with the second rotating piece (17).

6. The aluminum rod extrusion guide of claim 5, wherein, The side wall of the limiting frame (4) is provided with the second sliding groove (18), the side surface of the supporting seat (10) is fixedly connected with the second sliding block (19), the second sliding block (19) is slidably connected in the second sliding groove (18).

7. The aluminum rod extrusion guide of claim 1, wherein, It also includes the first air cylinder (20), the piston rod of the first air cylinder (20) is fixedly connected with the first connecting seat (2).

8. The aluminum rod extrusion guide of claim 1, wherein, The upper end of the heat preservation barrel (1) is fixedly connected with a second connecting seat (21), the upper portion of the second connecting seat (21) is provided with a third bidirectional lead screw (22), the two ends of the third bidirectional lead screw (22) are rotatably connected with the two ends of the second connecting seat (21), the two threads of the third bidirectional lead screw (22) are threadedly connected with a moving block (23), the upper end of the moving block (23) is fixedly connected with a second air cylinder (24), the piston rod of the second air cylinder (24) is fixedly connected with a tray (25), the upper end surface of the tray (25) is provided with an arc-shaped slot (26) concave, the arc-shaped slot (26) is slidably connected with a guide roller (27), the lower end of the guide roller (27) is provided with a guide slot (28) along the length direction, the arc-shaped slot (26) is fixedly connected with a guide block (29), and the guide block (29) is connected in the guide slot (28).

9. The aluminum rod extrusion guide of claim 8, wherein, One end of the third bidirectional lead screw (22) is fixedly connected with a third rotating part (30).

10. The aluminum rod extrusion guide of claim 9, wherein, The two sides of the third bidirectional lead screw (22) are provided with a second guide rod (31), the second guide rod (31) penetrates the moving block (23) so that the moving block (23) is slidably connected with the second guide rod (31), and the two ends of the second guide rod (31) are fixedly connected with the two ends of the second connecting seat (21).

Citation Information

Patent Citations

  • Aluminum bar extrusion guide device

    CN215587510U