Ruler surface flattening device for measuring tape verification

Abstract

The utility model discloses a tape surface flattening device for measuring tape verification, which comprises a clamping groove and a flattening wheel which are oppositely arranged, and a flattening gap is formed between the clamping groove and the flattening wheel; when the measuring tape is arranged in the flattening gap, the concave front surface of the measuring tape is opposite to the clamping groove, and the arched back surface of the measuring tape is opposite to the flattening wheel; the flattening wheel can movably move to abut against the arched highest point of the back face of the measuring tape so that the measuring tape can be flattened in the clamping groove. And the flattening wheel can translate relative to the clamping groove, so that the flattening wheel rolls to the highest point of the arch along the back contour of the measuring tape. An observation opening is formed in the clamping groove; when the measuring tape is arranged in the flattening gap, scale marks on the front face of the measuring tape are exposed towards the observation opening. Clamping blocks are arranged on the two sides of the clamping groove, and the two clamping blocks are spaced to form the observation opening. The tape measure flattening device can flatten the tape measure.

Description

Technical Field

[0001] The utility model relates to the technical field of tape measure calibration, in particular to a tape measure surface flattening device used for tape measure calibration. Background Art

[0002] The tape measure is a commonly used measuring tool. During the manufacturing process, the tape measure needs to be calibrated to ensure the accuracy of its scale. When calibrating a tape measure, the tape measure is placed against a standard ruler, and a camera is used to capture a comparison image of the two. The image is then analyzed by a computer to determine the scale difference between the two, thereby calibrating the tape measure. However, the standard ruler has a flat surface, while the tape measure has a curved surface. The curved surface image captured by the camera will have a certain shooting error compared to the actual surface, resulting in deviations in the tape measure calibration results. To make the calibration results more reliable, the tape measure needs to be flattened before comparison with the standard ruler. For this purpose, a corresponding scale flattening device is required. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a tape measure flattening device for measuring the tape surface, which is intended to flatten the tape measure.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model provides a tape measure surface flattening device for measuring the tape, comprising a positioning slot and a flattening wheel arranged opposite to each other, with a flattening gap between the positioning slot and the flattening wheel; when the tape measure is placed in the flattening gap, the concave front side of the tape measure is opposite to the positioning slot, and the arched back side of the tape measure is opposite to the flattening wheel; the flattening wheel can be movably displaced to counteract the highest point of the arched back side of the tape measure, so as to flatten the tape measure in the positioning slot.

[0005] Furthermore, the flattening wheel can translate relative to the positioning slot, so that the flattening wheel rolls along the back contour of the measuring tape to the highest point of the arch.

[0006] Furthermore, an observation port is provided on the positioning slot; when the measuring tape is placed in the flattened gap, the scale lines on the front of the measuring tape are exposed toward the observation port.

[0007] Furthermore, there are clamping blocks on both sides of the clamping slot, and the two clamping blocks are spaced apart to form the observation port.

[0008] Furthermore, flanges are provided on opposite sides of the two clamping blocks; when the measuring tape is flattened in the clamping slot, the two side edges of the front side of the measuring tape respectively abut against the flanges on the two clamping blocks.

[0009] Furthermore, a locking plane is provided on the opposite sides of the two clamping blocks; the axial direction of the flattening wheel is parallel to the locking plane, and the translation direction of the flattening wheel is perpendicular to the locking plane; when the tape measure is placed in the flattening gap, the extension direction of the tape measure is parallel to the locking plane.

[0010] Furthermore, at least one of the blocks is movable and displaceable, so that the distance between the two blocks can be changed.

[0011] Furthermore, the two clamping blocks are both mounted on the support plate, wherein one clamping block is fixed on the support plate, and the other clamping block can be slidably adjusted on the support plate to change the distance between the two clamping blocks.

[0012] Furthermore, a sliding seat and a slide rail are provided on the support plate, and the flattening wheel is rotatably mounted on the sliding seat; driven by the driving mechanism, the sliding seat can slide back and forth along the slide rail to drive the flattening wheel to translate relative to the positioning slot.

[0013] Furthermore, two groups of rolling guide cylinders are provided on the support plate, and the two groups of rolling guide cylinders are respectively located in front and behind the positioning groove; when the tape measure penetrates the flattening gap, the rolling guide cylinders can roll in contact with the tape measure.

[0014] Beneficial effects: The scale surface flattening device for tape measure calibration of the utility model can flatten the tape measure in the positioning slot through the flattening wheel that can be movable and translated; when the camera takes a comparison picture of the standard ruler and the flattened tape measure, the shooting error is reduced, and thus, the tape measure calibration result obtained by computer analysis of the comparison picture will be more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attachment Figure 1 Schematic diagram of the overall structure of the ruler surface flattening device;

[0016] Attachment Figure 2 A schematic diagram of the flattening wheel rolling along the back of the tape measure;

[0017] Attachment Figure 3 Schematic diagram of the driving mechanism. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] As attached Figures 1 to 3 The tape measure surface flattening device for tape measure calibration comprises a positioning slot 1 and a flattening wheel 2, positioned opposite each other. A flattening gap is defined between the positioning slot 1 and the flattening wheel 2. When a tape measure 12 is placed within the flattening gap, the concave front surface of the tape measure 12 faces the positioning slot 1, while the arched back surface of the tape measure 12 faces the flattening wheel 2. The flattening wheel 2 is movable until it contacts the highest point of the arched back surface of the tape measure 12. The flattening wheel 2 applies a force to the back surface of the tape measure 12, deforming and flattening the back surface of the tape measure 12, thereby flattening the tape measure 12 within the positioning slot 1.

[0020] The flattening wheel 2 can translate relative to the positioning slot 1, so that the flattening wheel 2 rolls along the back contour of the tape measure 12 to the highest point of the arch. In the process of the flattening wheel 2 rolling along the back of the tape measure 12, the flattening wheel 2 will gradually flatten the tape measure 12.

[0021] The clamping slot 1 is provided with an observation port 3. When the tape measure 12 is placed in the flattened gap, the scale lines on the front of the tape measure 12 are exposed to the observation port 3, through which the scale lines on the tape measure 12 can be observed, so that the scale of the flattened tape measure 12 can be compared with that of a standard ruler.

[0022] As attached Figure 2 As shown in FIG, the two sides of the clamping slot 1 are clamping blocks 4, and the two clamping blocks 4 are spaced apart to form the observation port 3.

[0023] The opposite sides of the two clamping blocks 4 are provided with flanges 5. When the measuring tape 12 is flattened in the clamping slot 1, the two side edges of the front side of the measuring tape 12 respectively abut against the flanges 5 on the two clamping blocks 4, and the highest point of the arch on the back side of the measuring tape 12 abuts against the flattening wheel 2.

[0024] A locking plane 6 is provided on the opposite sides of the two clamping blocks 4. When the flattening wheel 2 rolls along the back contour of the tape measure 12, the flattening wheel 2 will also apply a thrust to the tape measure 12, thereby pushing one side of the tape measure 12 against the locking plane 6. The locking plane 6 can limit the posture of the tape measure 12 after flattening, so as to control the flattened tape measure 12 to be parallel to the standard ruler.

[0025] Specifically, the axial direction of the flattening wheel 2 is parallel to the locking plane 6, and the translation direction of the flattening wheel 2 is perpendicular to the locking plane 6. When the measuring tape 12 is placed in the flattening gap, the extension direction of the measuring tape 12 is parallel to the locking plane 6.

[0026] At least one of the blocks 4 is movable and displaceable, so that the distance between the two blocks 4 can be changed, so that the tape measure flattening device of the present invention can adapt to tape measures 12 of different widths. Figure 1 As shown in FIG, both of the clamping blocks 4 are mounted on the support plate 7, with one clamping block 4 being fixed to the support plate 7 by bolts, and the other clamping block 4 being able to slide and adjust on the support plate 7 and then be fixed by bolts after the position is adjusted. By adjusting the position of one clamping block 4, the distance between the two clamping blocks 4 can be changed, thereby accommodating tape measures 12 of different widths.

[0027] As attached Figure 3 As shown in FIG, the support plate 7 is further provided with a sliding seat 8 and a slide rail 9, and the flattening wheel 2 is rotatably mounted on the sliding seat 8. Driven by a drive mechanism, the sliding seat 8 can slide back and forth along the slide rail 9, thereby driving the flattening wheel 2 to translate relative to the retaining groove 1. Specifically, the drive mechanism includes a motor 11, which drives the screw to rotate via a transmission belt. The sliding seat 8 is provided with a screw hole that mates with the screw thread. When the motor 11 rotates, the transmission belt and screw drive the sliding seat 8 to slide on the slide rail 9, thereby driving the flattening wheel 2 to translate.

[0028] As attached Figure 1 As shown in the figure, two groups of rolling guide cylinders 10 are provided on the support plate 7, and the two groups of rolling guide cylinders 10 are respectively located in front and behind the positioning groove 1; when the measuring tape 12 passes into the flattening gap, the rolling guide cylinders 10 can roll in contact with the measuring tape 12, thereby reducing the friction between the measuring tape 12 and the support plate 7.

[0029] The working method of the present invention is as follows: according to the width of the measuring tape 12, the distance between the two clamping blocks 4 is adjusted, and then the measuring tape 12 is inserted between the flattening wheel 2 and the two clamping blocks 4, and then the flattening wheel 2 is translated and rolled along the back contour of the measuring tape 12 to the highest point of the arch, flattening the measuring tape 12 while pushing the measuring tape 12 toward the clamping plane 6; after the measuring tape 12 is flattened, the highest point of the arch on the back of the measuring tape 12 is against the flattening wheel 2, and the two side edges of the front of the measuring tape 12 are against the two flanges 5 respectively, and one side edge of the measuring tape 12 is in contact with the clamping plane 6.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A tape measure flattening device for measuring tapes, characterized by: The invention comprises a positioning groove (1) and a flattening wheel (2) which are arranged opposite to each other, wherein a flattening gap is formed between the positioning groove (1) and the flattening wheel (2); when the measuring tape (12) is placed in the flattening gap, the concave front side of the measuring tape (12) faces the positioning groove (1), and the arched back side of the measuring tape (12) faces the flattening wheel (2); the flattening wheel (2) can be movably displaced to abut against the highest point of the arched back side of the measuring tape (12), so as to flatten the measuring tape (12) in the positioning groove (1).

2. The tape measure flattening device for tape measure calibration according to claim 1, characterized in that: The flattening wheel (2) can translate relative to the positioning slot (1), so that the flattening wheel (2) rolls along the back contour of the measuring tape (12) to the highest point of the arch.

3. The tape measure flattening device for tape measure calibration according to claim 2, characterized in that: An observation port (3) is provided on the positioning slot (1); when the measuring tape (12) is placed in the flattened gap, the scale lines on the front of the measuring tape (12) are exposed toward the observation port (3).

4. The tape measure flattening device for tape measure calibration according to claim 3, characterized in that: The two sides of the clamping slot (1) are clamping blocks (4), and the two clamping blocks (4) are spaced apart to form the observation port (3).

5. The tape measure flattening device for tape measure calibration according to claim 4, characterized in that: The opposite sides of the two clamping blocks (4) are both provided with flanges (5); when the measuring tape (12) is flattened in the clamping slot (1), the two side edges of the front side of the measuring tape (12) respectively abut against the flanges (5) on the two clamping blocks (4).

6. The tape measure flattening device for tape measure calibration according to claim 4, characterized in that: A locking plane (6) is provided on opposite sides of the two clamping blocks (4); the axial direction of the flattening wheel (2) is parallel to the locking plane (6), and the translation direction of the flattening wheel (2) is perpendicular to the locking plane (6); when the measuring tape (12) is placed in the flattening gap, the extension direction of the measuring tape (12) is parallel to the locking plane (6).

7. The tape measure flattening device for tape measure calibration according to claim 4, characterized in that: At least one of the clamping blocks (4) is movable and displaceable, so that the distance between the two clamping blocks (4) is variable.

8. The tape measure flattening device for tape measure calibration according to claim 7, characterized in that: The two card blocks (4) are both mounted on the support plate (7), one of the card blocks (4) is fixed on the support plate (7), and the other card block (4) can be slidably adjusted on the support plate (7) to change the distance between the two card blocks (4).

9. The tape measure flattening device for tape measure calibration according to claim 8, characterized in that: A sliding seat (8) and a sliding rail (9) are provided on the support plate (7), and the flattening wheel (2) is rotatably mounted on the sliding seat (8); driven by a driving mechanism, the sliding seat (8) can slide back and forth along the sliding rail (9) to drive the flattening wheel (2) to translate relative to the positioning groove (1).

10. The tape measure flattening device for tape measure calibration according to claim 8, characterized in that: Two groups of rolling guide cylinders (10) are provided on the support plate (7), and the two groups of rolling guide cylinders (10) are respectively located in front and behind the positioning groove (1); when the measuring tape (12) penetrates the flattening gap, the rolling guide cylinders (10) can be in rolling contact with the measuring tape (12).

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