A stretching machine with auxiliary shrinkage function

Abstract

This utility model relates to a stretching machine with an auxiliary shrinkage function, including a frame, on which a fixed stretching assembly and a movable stretching assembly are mounted. The fixed stretching assembly is fixed to one end of the frame, and the movable stretching assembly is slidably mounted on the frame via an X-axis guide rail. Both the fixed and movable stretching assemblies include a Y-axis guide rail and several pinning mechanisms slidably mounted on the Y-axis guide rail. Each pinning mechanism includes a Z-axis cylinder and a pin driven by the Z-axis cylinder. A shrinkage elastic band is sleeved between any two adjacent Z-axis cylinders in the fixed stretching assembly, and a shrinkage elastic band is sleeved between any two adjacent Z-axis cylinders in the movable stretching assembly. For thin aluminum honeycomb cores, the longitudinal shrinkage force during the axial stretching process is insufficient. The shrinkage elastic bands can help the Z-axis cylinders move closer together along the Y-axis, thereby improving the stretching and forming effect of the thin aluminum honeycomb core.

Description

Technical Field

[0001] This utility model relates to the field of stretching machine technology, specifically to a stretching machine with an auxiliary shrinkage function. Background Technology

[0002] During the fabrication of aluminum honeycomb panels, a stretching machine is used to stretch the aluminum honeycomb core to the desired shape and size. For example, the invention patent CN115815448A discloses an aluminum honeycomb core stretching and shaping device, which includes a support frame and a fixed clamping bracket fixedly installed on one side of the support frame. A sliding clamping bracket is provided on the opposite side of the fixed clamping bracket. Both the fixed and sliding clamping brackets are equipped with multiple piercing mechanisms, which are slidable. In use, the folded aluminum honeycomb core structure is placed on a support, and then the motor is started. The sliding clamping bracket moves towards the fixed clamping bracket, so that the ends of the folded aluminum honeycomb core structure are respectively positioned on the sliding and fixed clamping brackets. All cylinders are activated downwards to insert pins into the traction points of the folded aluminum honeycomb core structure. Then, the motor is started to pull the two ends of the folded aluminum honeycomb core structure in opposite directions. Simultaneously, the distance between adjacent cylinders is gradually shortened by the extension cylinder, thus stretching and shaping the aluminum honeycomb core structure. Finally, the cylinders are activated upwards to remove the pins.

[0003] Because the extension and retraction speed of the cylinders is not linear and the speed is difficult to control precisely, extension cylinders are not used in actual use to gradually shorten the distance between adjacent cylinders. Extension cylinders only function in the initial stage, moving each cylinder outwards. After the ends of the aluminum honeycomb core folded structure are properly attached, the motor is started to pull the two ends of the aluminum honeycomb core folded structure in opposite directions. While being stretched, the aluminum honeycomb core folded structure naturally contracts; that is, while being stretched axially, its longitudinal direction naturally contracts, thus minimizing damage to the aluminum honeycomb core. However, in practice, an issue requiring optimization has been identified: stretching aluminum honeycomb cores of average thickness is normal, but for thinner aluminum honeycomb cores, axial stretching is fine, but due to their thinness, the longitudinal natural contraction capacity is insufficient, affecting the final forming effect of the aluminum honeycomb panel. Utility Model Content

[0004] The purpose of this invention is to provide a stretching machine with an auxiliary shrinkage function to solve the problem of poor stretching and forming effect of thin aluminum honeycomb cores in actual use.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A stretching machine with auxiliary shrinkage function includes a frame, on which a fixed stretching component and a movable stretching component are mounted. The fixed stretching component is fixed to one end of the frame, and the movable stretching component is slidably mounted on the frame via an X-axis guide rail. Both the fixed and movable stretching components include a Y-axis guide rail and several needle-sticking mechanisms slidably mounted on the Y-axis guide rail. Each needle-sticking mechanism includes a Z-axis cylinder and a needle driven by the Z-axis cylinder. A shrinkage elastic band is sleeved between any two adjacent Z-axis cylinders in the fixed stretching component, and a shrinkage elastic band is sleeved between any two adjacent Z-axis cylinders in the movable stretching component.

[0007] Furthermore, the shrinking elastic band is ring-shaped and sleeved on the cylinder body of the Z-axis cylinder. In the fixed tension assembly, the shrinking elastic bands are arranged alternately in sequence, and in the movable tension assembly, the shrinking elastic bands are arranged alternately in sequence.

[0008] Furthermore, the needle insertion mechanism also includes a Y-axis slider, a bracket, and a drive block. The Y-axis slider is mounted on the bracket and cooperates with the Y-axis guide rail. The drive block is connected to the telescopic rod of the Z-axis cylinder. The upper end of the needle is fixed to the drive block, and the drive block is slidably mounted on the bracket along the Z-direction.

[0009] Furthermore, adjacent Y-axis sliders on the fixed or movable tension assembly are connected by a soft rope, so that the Z-axis cylinders can have a uniform spacing when deployed.

[0010] Furthermore, the fixed tensioning assembly includes two Y-axis cylinders, which are spaced apart in the Y-axis direction and move in opposite directions. The end of the telescopic rod of the Y-axis cylinder is provided with a drive plate, which is connected to the outermost bracket to drive the outermost Z-axis cylinder.

[0011] Furthermore, the bracket is a U-shaped frame with one side, and a guide plate is provided inside the U-shaped frame. The guide plate has a guide hole that runs through along the Z-axis for the insertion pin to pass through when it moves. A positioning block is provided between the guide plate and the bottom plate of the U-shaped frame. The front end face of the positioning block is a positioning plane for one end of the aluminum honeycomb core to abut against. The bottom plate of the U-shaped frame has an insertion hole, which is set to correspond to the guide hole. The insertion hole is located on the front side of the positioning block.

[0012] Furthermore, the front end face of the positioning block is provided with a groove, and a bolt hole is provided in the groove. The bolt hole is arranged through the X-axis direction, and the positioning block is fixed to the bracket by bolts.

[0013] Furthermore, the base plate is provided with a support strip for supporting one end of the aluminum honeycomb core.

[0014] The beneficial effects of this utility model are:

[0015] Before placing the aluminum honeycomb core, the Y-axis cylinder extends outward, and each Z-axis cylinder unfolds outward in sequence to prepare for receiving the aluminum honeycomb core. At this time, the shrinking elastic bands between the Z-axis cylinders are stretched, exhibiting a certain tendency to shrink (energy storage provides auxiliary energy for the subsequent Z-axis cylinder reset). Then, the aluminum honeycomb core is placed on the support platform of the frame. The movement of the Z-axis cylinders causes the two sets of pins to be inserted downward into the two ends of the aluminum honeycomb core. At this time, the Y-axis cylinders no longer function, and the movable stretching assembly moves away from the fixed stretching assembly, stretching the aluminum honeycomb core. The aluminum honeycomb core is stretched in the X-axis direction, and therefore naturally shrinks in the Y-axis direction. Simultaneously, each Z-axis cylinder, relying on the natural shrinkage force of the aluminum honeycomb core and the assistance of the shrinking elastic bands, moves closer along the Y-axis direction. The movement distance of the movable stretching assembly is controlled according to the initial size of the aluminum honeycomb core, ultimately stretching it into the required aluminum honeycomb panel. For aluminum honeycomb cores of normal thickness, the shrinkage elastic band has little effect; for thin aluminum honeycomb cores (which lack sufficient shrinkage force), the shrinkage elastic band can help each Z-axis cylinder move closer together along the Y-axis, thereby improving the stretching and forming effect of the thin aluminum honeycomb core. Attached Figure Description

[0016] Figure 1 This is a perspective view of a portion of the structure of the stretching machine with auxiliary shrinkage function according to this utility model;

[0017] Figure 2 yes Figure 1 A partial view of the fixed tension component;

[0018] Figure 3 yes Figure 1 Another partial view of the fixed tension component;

[0019] Figure 4 This is a diagram showing how a rubber band can be stretched to a certain extent before it contracts.

[0020] 1. Frame; 11. X-axis guide rail; 2. Fixed tensioning assembly; 21. Support beam; 22. Y-axis guide rail; 3. Movable tensioning assembly; 31. Servo motor; 32. Rack; 33. X-axis slider; 4. Y-axis cylinder; 41. Drive plate; 5. Shrinking elastic band; 6. Needle insertion mechanism; 61. Z-axis cylinder; 62. Y-axis slider; 63. Bracket; 64. Drive block; 65. Guide plate; 66. Positioning block; 661. Positioning plane; 662. Bolt hole; 67. Support bar; 68. Pin. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art are within the protection scope of the present utility model.

[0022] Embodiments of this utility model:

[0023] like Figures 1-3 As shown, a stretching machine with auxiliary shrinkage function includes a frame 1. The frame 1 is provided with a fixed stretching component 2 and a movable stretching component 3. The fixed stretching component 2 is fixed at one end of the frame 1, and the movable stretching component 3 is slidably mounted on the frame 1 via an X-axis guide rail 11.

[0024] Both the fixed tensioning assembly 2 and the movable tensioning assembly 3 include a support beam 21, a Y-axis guide rail 22, and several needle-sticking mechanisms 6 slidably mounted on the Y-axis guide rail 22. Two parallel Y-axis guide rails 22 are provided, and each Y-axis guide rail 22 is fixed to a corresponding support beam 21. The support beam 21 of the fixed tensioning assembly 2 is fixed to the frame 1, while the support beam 21 of the movable tensioning assembly 3 is fixed to the X-axis slider 33. The bottom of the X-axis slider 33 is slidably mounted to the X-axis guide rail 11. A servo motor 31 is also provided on the X-axis slider 33, which drives the movable tensioning assembly 3 via a rack 32 and gear transmission, allowing it to move in the X-axis direction, either forward or reverse. The rack 32 is arranged along the X-axis direction, and the gear is driven by the servo motor 31.

[0025] The fixed tensioning component 2 and the movable tensioning component 3 have the same structure but are installed in opposite directions. The difference is that the movable tensioning component 3 is movable. By utilizing the relative movement of the fixed tensioning component 2 and the movable tensioning component 3, the aluminum honeycomb core can be stretched into an aluminum honeycomb panel. The above basic structure is existing technology.

[0026] The specific structure and working principle are introduced using the fixed tension component 2 as an example. Figures 1-4 As shown, the needle insertion mechanism 6 includes a Z-axis cylinder 61 and a needle 68 driven by the Z-axis cylinder 61. The needle insertion mechanism 6 also includes a Y-axis slider 62, a bracket 63, and a drive block 64. The Y-axis slider 62 is located on the rear side of the bracket 63 and cooperates with the Y-axis guide rail 22. The drive block 64 is connected to the telescopic rod of the Z-axis cylinder 61. The upper end of the needle 68 is fixed to the drive block 64. The drive block 64 is slidably mounted on the bracket along the Z-direction. The Z-axis cylinder 61 drives the drive block 64, which in turn drives the needle 68 to move up and down in the Z-direction. When the needle 68 is downward, it is the end position for inserting into the aluminum honeycomb core.

[0027] The bracket 63 is a U-shaped frame with one side. A guide plate 65 is provided inside the U-shaped frame, and the guide plate 65 has a guide hole running through it along the Z-axis, allowing the insertion pin 68 to pass through during operation, thus improving the stability of the insertion pin 68. A positioning block 66 is provided between the guide plate 65 and the base plate of the U-shaped frame. The front face of the positioning block 66 is a positioning plane 661, used for one end of the aluminum honeycomb core to abut against. The positioning plane 661 is machined to achieve initial positioning when the aluminum honeycomb core is initially placed. The base plate of the U-shaped frame has insertion holes, which are correspondingly set with the guide hole. The insertion holes are located on the front side of the positioning block 66. During use, after the insertion pin 68 is inserted into the aluminum honeycomb core, the insertion holes can avoid the bottom of the protruding insertion pin 68.

[0028] Figure 3 As shown, the front end face of the positioning block 66 has a groove extending along the Z-axis, and a bolt hole 662 is provided in the groove. The bolt hole 662 extends along the X-axis, and the positioning block 66 is fixed to the bracket by bolts. This groove reduces the machining amount of the positioning plane 661 and also prevents the bolt from protruding.

[0029] Figure 3 As shown, the base plate is provided with a support strip 67 for supporting one end of the aluminum honeycomb core.

[0030] The fixed tensioning assembly 2 includes two Y-axis cylinders 4, which are spaced apart along the Y-axis and move in opposite directions. Adjacent Y-axis sliders 62 of the fixed tensioning assembly 2 are connected by a flexible rope (not shown), ensuring that the Z-axis cylinders 61 have a uniform and predetermined spacing after deployment. The flexible rope can be made of steel wire.

[0031] The telescopic rod of the Y-axis cylinder 4 has a drive plate 41 at its end. The drive plate 41 is connected to the outermost bracket 63 and is used to synchronously drive the outermost Z-axis cylinder 61. The Z-axis cylinders 61 in the fixed tension assembly 2 are divided into two groups. The two Y-axis cylinders 4 drive the two outermost brackets respectively, that is, drive the two outermost Z-axis cylinders 61. The other Z-axis cylinders 61 are pulled by soft ropes. When the two Y-axis cylinders 4 move synchronously and extend outward, they drive each Z-axis cylinder 61 to unfold outward in sequence, preparing to receive the aluminum honeycomb core.

[0032] In the fixed tension assembly 2, a shrink elastic band 5 is fitted between each pair of adjacent Z-axis cylinders 61. The shrink elastic band 5 is ring-shaped and is fitted onto the cylinder body of the Z-axis cylinder 61. In other words, in the movable tension assembly 3, a shrink elastic band 5 is fitted between each pair of adjacent Z-axis cylinders 61. The shrink elastic bands 5 in the fixed tension assembly 2 are arranged in a staggered pattern, and the shrink elastic bands 5 in the movable tension assembly 3 are also arranged in a staggered pattern. The shrink elastic bands 5 are made of rubber.

[0033] The working principle of the stretching machine with auxiliary shrinkage function of this utility model:

[0034] Before placing the aluminum honeycomb core, the movable tensioning component 3 is positioned away from the fixed tensioning component 2. First, the Y-axis cylinder 4 is controlled to extend outward synchronously. The Z-axis cylinders 61 of the fixed tensioning component 2 unfold outward in sequence, and the Z-axis cylinders 61 of the movable tensioning component 3 unfold outward in sequence. After unfolding into place, the soft rope is in a taut state, which ensures the spacing between the Z-axis cylinders 61, preparing for receiving the aluminum honeycomb core. At this time, the shrinking elastic band 5 is stretched open and has a certain tendency to shrink (energy storage provides auxiliary energy for the subsequent Z-axis cylinder reset). Then, the aluminum honeycomb core is placed on the support platform of the frame 1, with one end of the aluminum honeycomb core positioned close to the fixed stretching assembly 2. Driven by the servo motor 31, the movable stretching assembly 3 moves towards the fixed stretching assembly 2. When the movable stretching assembly 3 reaches the other end of the aluminum honeycomb core, the support strips 67 at the bottom of both the fixed stretching assembly 2 and the movable stretching assembly 3 can be inserted under the aluminum honeycomb core for support. At this point, the drive of the servo motor 31 is paused. By controlling the action of each Z-axis cylinder 61, the pins 68 are inserted downwards into the end of the aluminum honeycomb core. The servo motor 31 reverses direction, at which point the Y-axis cylinder 4 is inactive, and the movable stretching assembly 3 moves away from the fixed stretching assembly 2, thus stretching the aluminum honeycomb core. Since the aluminum honeycomb core is stretched in the X-axis direction, it will naturally contract in the Y-axis direction. Simultaneously, each Z-axis cylinder 61 moves closer along the Y-axis direction. The moving distance of the movable stretching assembly 3 is controlled according to the initial dimensions of the aluminum honeycomb core, ultimately stretching it into the desired aluminum honeycomb panel. For aluminum honeycomb cores of normal thickness, the shrinkage elastic band 5 plays an insignificant role and is negligible. However, for thin aluminum honeycomb cores (where the shrinkage force is insufficient), the shrinkage elastic band 5 can help each Z-axis cylinder 61 to move closer together along the Y-axis, thereby improving the stretching and forming effect of the thin aluminum honeycomb core.

Claims

1. A stretching machine with auxiliary shrinkage function, comprising a frame, on which a fixed stretching assembly and a movable stretching assembly are provided. The fixed stretching assembly is fixed to one end of the frame, and the movable stretching assembly is slidably mounted on the frame via an X-axis guide rail. Both the fixed and movable stretching assemblies include a Y-axis guide rail and several needle-sticking mechanisms slidably mounted on the Y-axis guide rail. Each needle-sticking mechanism includes a Z-axis cylinder and a needle driven by the Z-axis cylinder. The machine is characterized by: A shrinking elastic band is fitted between any two adjacent Z-axis cylinders in the fixed tensioning assembly, and a shrinking elastic band is fitted between any two adjacent Z-axis cylinders in the movable tensioning assembly.

2. The stretching machine with auxiliary shrinkage function according to claim 1, characterized in that: The shrinking elastic band is ring-shaped and sleeved on the cylinder body of the Z-axis cylinder. The shrinking elastic bands in the fixed tension assembly are arranged alternately in sequence, and the shrinking elastic bands in the movable tension assembly are arranged alternately in sequence.

3. The stretching machine with auxiliary shrinkage function according to claim 1, characterized in that: The needle insertion mechanism also includes a Y-axis slider, a bracket, and a drive block. The Y-axis slider is mounted on the bracket and cooperates with the Y-axis guide rail. The drive block is connected to the telescopic rod of the Z-axis cylinder. The upper end of the needle is fixed to the drive block, and the drive block is slidably mounted on the bracket along the Z-direction.

4. The stretching machine with auxiliary shrinkage function according to claim 3, characterized in that: Adjacent Y-axis sliders on the fixed or movable tension assembly are connected by a soft rope, so that the Z-axis cylinders can have a uniform spacing when deployed.

5. The stretching machine with auxiliary shrinkage function according to claim 4, characterized in that: The fixed tensioning assembly includes two Y-axis cylinders, which are spaced apart in the Y-axis direction and move in opposite directions. The end of the telescopic rod of the Y-axis cylinder is provided with a drive plate, which is connected to the outermost bracket to drive the outermost Z-axis cylinder.

6. The stretching machine with auxiliary shrinkage function according to claim 3, characterized in that: The bracket is a U-shaped frame with one side. A guide plate is provided inside the U-shaped frame. The guide plate has a guide hole that runs through the Z-axis for the insertion pin to pass through when it moves. A positioning block is provided between the guide plate and the bottom plate of the U-shaped frame. The front end of the positioning block is a positioning plane for one end of the aluminum honeycomb core to abut. The bottom plate of the U-shaped frame has an insertion hole that corresponds to the guide hole and is located in front of the positioning block.

7. The stretching machine with auxiliary shrinkage function according to claim 6, characterized in that: The front end face of the positioning block is provided with a groove, and a bolt hole is provided in the groove. The bolt hole is arranged through the X-axis direction, and the positioning block is fixed to the bracket by bolts.

8. The stretching machine with auxiliary shrinkage function according to claim 7, characterized in that: The base plate is provided with a support strip for supporting one end of the aluminum honeycomb core.

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