A testing device for measuring leather dimensions

Abstract

A detection device for measuring leather dimensions addresses the technical problem mentioned in the background art of existing leather measuring machines, where operators frequently need to move back and forth between the two ends of the worktable to place and retrieve leather, increasing the workload of the operator. The device includes a leather measuring machine body, a transport trolley at the end of the machine body along its conveying direction, a sliding frame on the machine body, two sliding frames on the sliding frame, a cylinder fixed on the sliding frame for driving the two sliding frames to move vertically, two flexible grippers on each of the two sliding frames for gripping the leather that has been inspected on the machine, a first drive component on the sliding frame for driving the two sliding frames to move relative to each other, and a second drive component within each sliding frame for driving the two flexible grippers to move relative to each other.

Description

Technical Field

[0001] This utility model relates to the field of leather processing technology, and specifically to a testing device for measuring leather dimensions. Background Technology

[0002] Leather measuring machines, also known as leather measuring machines, are classified into finished leather measuring machines and semi-finished blue leather measuring machines based on the type of leather being measured. Finished leather measuring machines use photoelectric switches with transmitters and receivers. The conveyor belt consists of several parallel single conveyor belts arranged at certain intervals. The transmitter and receiver of the photoelectric switch are respectively installed above and below the gap between adjacent single conveyor belts. When the leather passes through the photoelectric switch, the change in reflected light is used to achieve detection and measurement, and the photoelectric switch transmits the detection signal to the computing system.

[0003] Existing leather measuring machines, such as the invention patent document with authorization announcement number "CN221082909U" and patent name "A Horizontal Leather Measuring Machine", disclose a leather measuring machine including a main frame and a worktable for measuring leather. The worktable is located on the upper surface of the main frame and also includes an active rotating shaft, a driven rotating shaft, a sensor, and a coding assembly. The active rotating shaft and the driven rotating shaft are rotatably mounted on the main frame and are respectively located on both sides of the worktable. The sensor is mounted on the driven rotating shaft, and the coding assembly is mounted on the worktable. The sensor and the coding assembly are signal connected.

[0004] In the aforementioned patent document, the operator places the leather to be measured at one end of the workbench. The workbench transports the leather and passes it through the sensors on the workbench, then transports it towards the end of the workbench. Since the operator places and retrieves the leather on both sides of the workbench, the operator needs to frequently move back and forth between the two ends of the workbench and place the leather during the measurement, which increases the operator's workload. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a detection device for measuring leather dimensions. This device solves the technical problem mentioned in the background art: existing leather measuring machines place the leather to be measured at one end of a worktable, which then transports the leather through sensors on the worktable towards the end. Because the operator places and retrieves the leather on both sides of the worktable, frequent back-and-forth movement between the two ends of the worktable is required during leather measurement, increasing the operator's workload.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A measuring device for measuring leather dimensions includes a leather measuring machine body. A transport trolley is located at the end of the leather measuring machine body along its conveying direction. A movable frame is slidably mounted on the leather measuring machine body. Two movable frames are slidably mounted on the movable frame. A cylinder is fixed on the movable frame to drive the two movable frames to move vertically. Each of the two movable frames is equipped with two flexible grippers that can move relative to each other. The flexible grippers are used to grip the leather that has been inspected on the leather measuring machine. The movable frame is equipped with a first driving component for driving the two movable frames to move relative to each other. Each movable frame is equipped with a second driving component for driving the two flexible grippers to move relative to each other.

[0008] Working principle:

[0009] The leather measuring machine body is used to measure leather dimensions. After the measurement process is completed, the leather is transported to the end position of the leather measuring machine body, close to the transport trolley. The moving frame slides on the leather measuring machine body. When the moving frame is moved above the leather, the operator drives the two moving frames to move relative to each other through the first drive component on the moving frame to adjust their relative positions with respect to the leather, ensuring that they cover both sides of the leather or the target gripping area. After the two moving frames are adjusted to the appropriate position, the second drive component on each moving frame works independently, driving the two flexible grippers on it to move closer to each other. Then, the operator drives the two moving frames towards the leather measuring machine body through the cylinder and uses the flexible grippers to grip the leather that has been inspected. Finally, the moving frame slides on the leather measuring machine body, moving the moving frame holding the leather and the flexible grippers together to the top of the transport trolley, and the leather is placed on the transport trolley in sequence.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] First, it is equipped with flexible grippers. The flexible grippers can stably hold leather of different thicknesses and curvatures by covering the wavy contact surface and the anti-slip structure on the bottom, avoiding the indentations or tears caused by traditional mechanical grippers.

[0012] Secondly, a first driving component and a second driving component are provided. The first driving component drives the two moving frames to move relative to each other, which can quickly adapt to leathers of different widths. The second driving component can ensure that the two flexible interlocking frames move synchronously within a single moving frame, avoiding leather displacement caused by unilateral force. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0014] Figure 2 This is a schematic diagram of the assembly structure of the support frame and two movable frames;

[0015] Figure 3This is a schematic diagram of the cross-sectional structure inside the moving frame;

[0016] Figure 4 This is a schematic diagram of the assembly structure of the mounting block and the flexible gripper.

[0017] Explanation of reference numerals in the attached drawings: 1. Leather measuring machine body; 2. Transport cart; 3. Moving frame; 4. Moving frame; 5. Flexible gripper; 6. Support frame; 7. First guide rod; 8. First rotating shaft; 9. Rotating block; 10. Connecting rod; 11. First electric push rod; 12. Second rotating shaft; 13. Gear; 14. Rack; 15. Mounting block; 16. Mounting cavity; 17. First strip hole; 18. Second strip hole; 19. Second electric push rod; 20. Fixing block; 21. Guide rail; 22. Screw; 23. Guide rod; 24. Cylinder. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0019] Example:

[0020] like Figure 1 As shown, a detection device for measuring leather size includes a leather measuring machine body 1. A transport cart 2 is provided at the end of the leather measuring machine body 1 along its conveying direction. A movable frame 3 is slidably mounted on the leather measuring machine body 1. Guide rails 21 are fixed on both sides of the leather measuring machine body 1. A screw 22 is rotatably mounted in one guide rail 21, and a guide rod 23 is fixed in the other guide rail 21. One end of the bottom of the movable frame 3 is threadedly connected to the screw 22 and slidably mounted in the guide rail 21, and the other end is slidably connected to the guide rod 23 and slidably mounted in the guide rail 21. After the leather measuring machine body 1 completes the leather size detection, the leather is conveyed to the end. The movable frame 3 is driven by an external motor and reducer and slides along the guide rail 21, moving to above the leather. A cylinder drives the support frame 6 to move down as a whole, so that the movable frame 4 is close to the surface of the leather. The two flexible grippers 5 on each movable frame 4 approach each other and clamp the leather. The movable frame 3 slides above the transport cart 2 and releases the leather to complete the transfer.

[0021] like Figure 1 and Figure 3 and Figure 4 As shown, two movable frames 4 are slidably mounted on the movable frame 3. A cylinder for driving the two movable frames 4 to move vertically is fixed on the movable frame 3. Each of the two movable frames 4 is equipped with two flexible grippers 5 that can move relative to each other. The flexible grippers 5 are used to grip the leather that has been inspected on the leather measuring machine. The leather measuring machine body 1 and the flexible grippers 5 are existing technologies. Their specific structures and principles will not be elaborated on here.

[0022] like Figure 1 and Figure 2 and Figure 3As shown, the movable frame 3 is equipped with a first driving assembly for driving the two movable frames 4 to move relative to each other. The first driving assembly includes a support frame 6, two first guide rods 7, a first rotating shaft 8, a rotating block 9, and two connecting rods 10. The support frame 6 is fixedly connected to the telescopic end of the cylinder and is located between the movable frame 3 and the measuring machine body 1. The two first guide rods 7 are respectively fixed on both sides of the support frame 6. Each movable frame 4 is slidably connected to the two first guide rods 7 at both ends. The two ends of the first rotating shaft 8 are rotatably located at the top of the support frame 6 and the bottom of the movable frame 3, respectively. The rotating block 9... 9 is fixed on the first rotating shaft 8. One end of each of the two connecting rods 10 is rotatably mounted on the two movable frames 4, and the other end is rotatably mounted on both ends of the rotating block 9. The bottom of the support frame 6 is fixed with a first electric push rod 11, and the telescopic end of the first electric push rod 11 is fixedly connected to one of the movable frames 4. The first electric push rod 11 telescopically pushes one of the movable frames 4 to slide along the first guide rod 7. The movable frame 4 drives the rotating block 9 to rotate around the first rotating shaft 8 through the connecting rod 10, pushing the connecting rod 10 on the other side, so that the two movable frames 4 move synchronously in opposite directions.

[0023] like Figure 1 and Figure 2 and Figure 3 and Figure 4 As shown, each movable frame 4 is equipped with a second drive assembly for driving the two flexible grippers 5 to move relative to each other. The second drive assembly includes a second rotating shaft 12, a gear 13, two racks 14, and two mounting blocks 15. A mounting cavity 16 is provided within the movable frame 4. The second rotating shaft 12 is rotatably disposed within the mounting cavity 16. The gear 13 is fixedly mounted on the second rotating shaft 12. The two racks 14 are slidably disposed within the mounting cavity 16, and both racks 14 mesh with the gear 13. Two first strip-shaped holes 17 are provided at the bottom of the movable frame 4, and the two first strip-shaped holes 17 are located on both sides of the gear 13. The two mounting blocks 15 are fixedly mounted at the ends of the two racks 14. The two flexible grippers 5 extend downward through the two first strip holes 17 respectively, and are fixed at the bottom of the two mounting blocks 15 respectively. The moving frame 4 has a second strip hole 18, and a second electric push rod 19 is fixed on the moving frame 4. A fixing block 20 is fixed on the telescopic end of the second electric push rod 19. The fixing block 20 slides through the second strip hole 18 and is fixed to one of the racks 14. The second electric push rod 19 extends and retracts, pushing the fixing block 20 to move along the second strip hole 18, thereby driving one rack 14. The rack 14 drives the gear 13 to rotate, forcing the other rack 14 to move in the opposite direction. The two racks 14 drive the two flexible grippers 5 to move synchronously through the mounting blocks 15.

[0024] Working principle:

[0025] After the leather measuring machine body 1 completes the leather size detection, the leather moves along the conveying direction to the end positioning. The screw 22 is driven to rotate by an external motor and reducer. One end of the moving frame 3 engages with the screw 22, causing it to slide along the guide rail 21 and move directly above the leather. The cylinder pushes the support frame 6 to move down as a whole, and the two moving frames 4 are close to the leather surface. The first electric push rod 11 extends and retracts, pushing one side of the moving frame 4 to slide along the first guide rod 7. Through the connecting rod 10, it drives the rotating block 9 to rotate around the first rotating shaft 8, forcibly and synchronously driving the other side of the moving frame 4 to move in the opposite direction, so that the distance between the two frames is adapted to the leather. After the width is adjusted, the second electric push rod 19 extends and retracts, pushing the fixed block 20 to move along the second strip hole 18, driving one rack 14 to move. The rack 14 drives the gear 13 to rotate, forcing the other rack 14 to move in the opposite direction. The two racks 14 drive the flexible gripper 5 to move relative to each other through the mounting block 15. The flexible gripper 5 wavyly contacts and covers the leather. Finally, the moving frame 3 slides along the guide rail 21, transferring the gripped leather to the top of the transport vehicle 2. The flexible gripper 5 opens to release the leather, completing the transfer of the leather. Subsequent operators can sort the leather on the transport vehicle 2 according to the stacking order of the leather.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A detection device for measuring the size of a piece of leather, characterized in that, The machine includes a leather measuring machine body (1), a transport vehicle (2) at the end of the leather measuring machine body (1) along its conveying direction, a movable frame (3) slidably mounted on the leather measuring machine body (1), two movable frames (4) slidably mounted on the movable frame (3), a cylinder (24) fixed on the movable frame (3) for driving the two movable frames (4) to move vertically, two flexible grippers (5) that can move relative to each other on each of the two movable frames (4), the flexible grippers (5) for gripping the leather that has been inspected on the leather measuring machine, a first drive component for driving the two movable frames (4) to move relative to each other on the movable frame (3), and a second drive component for driving the two flexible grippers (5) to move relative to each other in each of the movable frames (4).

2. The detection device for measuring the size of leather according to claim 1, characterized in that: The first drive assembly includes a support frame (6), two first guide rods (7), a first rotating shaft (8), a rotating block (9), and two connecting rods (10). The support frame (6) is fixedly connected to the telescopic end of the cylinder (24), and the support frame (6) is located between the movable frame (3) and the body of the measuring machine (1). The two first guide rods (7) are respectively fixed on both sides of the support frame (6). The two ends of each movable frame (4) are slidably connected to the two first guide rods (7). The two ends of the first rotating shaft (8) are respectively rotatably located at the top of the support frame (6) and the bottom of the movable frame (3). The rotating block (9) is fixed on the first rotating shaft (8). One end of each of the two connecting rods (10) is rotatably located on the two movable frames (4), and the other end is rotatably located at both ends of the rotating block (9).

3. A detection device for measuring the size of leather according to claim 2, characterized in that: The support frame (6) is fixedly provided with a first electric push rod (11) at the bottom, and the telescopic end of the first electric push rod (11) is fixedly connected to one of the movable frames (4).

4. The detection device for measuring the size of leather according to claim 1, characterized in that: The second drive assembly includes a second rotating shaft (12), a gear (13), two racks (14), and two mounting blocks (15). The movable frame (4) has a mounting cavity (16). The second rotating shaft (12) is rotatably disposed in the mounting cavity (16). The gear (13) is fixed on the second rotating shaft (12). The two racks (14) are slidably disposed in the mounting cavity (16) and both racks (14) mesh with the gear (13). The bottom of the movable frame (4) has two first strip holes (17) and the two first strip holes (17) are located on both sides of the gear (13). The two mounting blocks (15) are fixed on the ends of the two racks (14) and the two mounting blocks (15) slide through the two first strip holes (17) and extend downward. The two flexible grippers (5) are fixed on the bottom of the two mounting blocks (15).

5. A detection device for measuring the size of leather according to claim 4, characterized in that: The movable frame (4) has a second strip hole (18) and a second electric push rod (19) is fixed on the movable frame (4). A fixing block (20) is fixed on the telescopic end of the second electric push rod (19). The fixing block (20) slides through the second strip hole (18) and is fixed to one of the racks (14).

6. The detection device for measuring the size of leather according to claim 1, characterized in that: The body of the leather measuring machine (1) is fixed with guide rails (21) on both sides. A screw (22) is rotatably installed in one of the guide rails (21), and a guide rod (23) is fixed in the other guide rail (21). One end of the bottom of the moving frame (3) is threadedly connected to the screw (22) and slidably installed in the guide rail (21), and the other end is slidably connected to the guide rod (23) and slidably installed in the guide rail (21).

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