A mold cone angle detection device

Abstract

The present invention discloses a mold taper angle detection device, comprising a handpiece, one end of which is provided with a first swinging foot and a second swinging foot. The handpiece is provided with a first elongated hole at one end, a connecting member passing through the first elongated hole, the second swinging foot being connected to the connecting member, and the second swinging foot being rotatably connected to the handpiece via the connecting member. The first swinging foot is provided with a first measuring surface for engaging with a movable core head, and the second swinging foot is provided with a second measuring surface for engaging with the movable core head. The present invention provides a mold taper angle detection device with high measurement efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and in particular to a mold taper angle detection device. Background Art

[0002] The copper tube drawing die includes a floating core head. The cone angle of the floating core head needs to be measured after the floating core head is purchased and before use, so as to verify the compliance of the cone angle of the floating core head with the drawing and avoid product quality scrap losses caused by the use of unqualified (not meeting the technical requirements of the drawing) floating core heads.

[0003] After the existing copper tube stretching dies are purchased, the cone angle of the floating core head cannot be measured directly, and it is impossible to confirm whether the cone angle processing of the floating core head meets the technical requirements of the drawings. The existing measuring devices use optical instruments for measurement, which are expensive, not cost-effective, and easily damaged after falling. Although some manual measuring devices are cheap and simple in structure, the measurement steps are cumbersome and the measurement efficiency is low. Specifically, the existing measuring device needs to be placed on the floating core head first, and then the measuring device is placed on the paper to draw a line, and then the angle of the line on the paper is measured with a protractor, which is very troublesome. Summary of the Invention

[0004] In order to solve the shortcoming of low measurement efficiency of existing manual measuring devices, the present invention proposes a mold taper angle detection device with high measurement efficiency.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A mold taper angle detection device includes a handpiece, one end of which is provided with a first swing foot and a second swing foot, one end of the handpiece is provided with a first long hole, a connecting piece passes through the first long hole, the second swing foot is connected to the connecting piece, the second swing foot is rotatably connected to the handpiece through the connecting piece, the first swing foot is provided with a first measuring surface for fitting with a movable core head, and the second swing foot is provided with a second measuring surface for fitting with the movable core head.

[0007] Through the above-mentioned setting, it is easy to measure the cone angle, and the application has low cost and high cost performance. First, the existing floating core head is introduced. The floating core head is an integrally formed structure. The floating core head includes a cylindrical surface and a conical surface. The cone angle is formed between the cylindrical surface and the conical surface. When measuring the cone angle of the application, hold the handpiece with your hand, then fit the first measuring surface of the first swinging foot on the conical surface, and then fit the second measuring surface of the second swinging foot on the cylindrical surface. During this process, the second swinging foot may rotate around the axis of the connecting part, and the connecting part may move along the first long hole. Then remove the floating core head and maintain the relative positions of the first swinging foot and the second swinging foot. Place the application on a piece of paper. The first swinging foot is basically parallel to the paper surface, and the second swinging foot is basically parallel to the paper surface. Then use a pen to draw a line along the first measuring surface and a line along the second measuring surface. Remove the application from the paper, and then measure the angle between the two lines to get the cone angle. Comparing the measured cone angle with the parameters on the drawing can determine whether the cone angle of the floating core head is qualified. The handpiece, the first swing leg and the second swing leg can all be cut from steel plates, which have a simple structure and low cost, thereby improving the cost performance. In addition, they are not easily damaged.

[0008] Furthermore, the handpiece includes a first rotating member and a second rotating member, one end of the first rotating member and one end of the second rotating member are connected by a first bolt, the first swing foot is arranged at an end of the first rotating member away from the first bolt, the first long hole is arranged at an end of the second rotating member away from the first bolt, the first measuring surface is arranged at an end of the first swing foot away from the first bolt, and the second measuring surface is arranged at an end of the second swing foot away from the first bolt.

[0009] With this arrangement, the spacing between the first and second swinging legs can be adjusted by adjusting the angle between the first and second rotating members, thereby adapting to different sizes of floating core heads. Specifically, when the first bolt is loosened, the angle between the first and second rotating members can be adjusted, while when the first bolt is tightened, the first and second rotating members are relatively fixed.

[0010] Furthermore, a second long hole is provided at one end of the first rotating member away from the first bolt, a second bolt passes through the second long hole, the first swing foot is connected to the second bolt, and the first swing foot is rotatably connected to the first rotating member through the second bolt.

[0011] Through the above arrangement, the angle between the first swing foot and the first rotating member can be adjusted, so that the first measuring surface and the conical surface can be fitted together by rotating the first swing foot. The second bolt passes through the first swing foot and abuts against the first swing foot. When the second bolt is tightened, the first swing foot can be pressed against the first rotating member, thereby fixing the first swing foot on the first rotating member. When the second bolt is loosened, the first swing foot can rotate around the axis of the second bolt. In addition, the second bolt can move along the second long hole, thereby adjusting the position of the first swing foot on the first rotating member to increase the degree of freedom of the first swing foot to facilitate the fitting of the first measuring surface and the conical surface.

[0012] Furthermore, the connecting member is configured as a third bolt.

[0013] Through the above arrangement, it is convenient to adjust the position of the second swing pin, and it is also convenient to fix the second swing pin on the second rotating member. Specifically, the third bolt passes through the second swing pin and abuts against the second swing pin. When the third bolt is tightened, the second swing pin can be pressed against the second rotating member, thereby fixing the second swing pin on the second rotating member. When the third bolt is loosened, the second swing pin can rotate around the axis of the third bolt. In addition, the third bolt can move along the first long hole, thereby adjusting the position of the second swing pin on the second rotating member to increase the freedom of the second swing pin, so as to facilitate the fitting of the second measuring surface and the cylindrical surface.

[0014] Furthermore, the first rotating member and the second rotating member are made of stainless steel.

[0015] Furthermore, the first swing foot and the handpiece are fixedly connected, and a first slide groove is provided in the handpiece, and the extension direction of the first slide groove is consistent with the extension direction of the handpiece. A sliding rod is slidably connected in the first slide groove, and the connecting piece is fixedly connected to one end of the sliding rod, and the end of the sliding rod away from the connecting piece is fixedly connected to a ruler, the ruler is arc-shaped and provided with a scale, and the center of the ruler is located on the axis of the connecting piece, and an observation groove is provided at the end of the handpiece away from the first swing foot, and the ruler is at least partially provided in the observation groove, and an avoidance groove is provided in the handpiece, and the end of the second swing foot away from the second measuring surface is passed through by the connecting piece and is rotatably connected to the connecting piece, and the end of the second swing foot away from the second measuring surface is located in the avoidance groove and extends to form a pointer, and the end of the pointer away from the connecting piece is arranged in the observation groove and abuts against the ruler.

[0016] Through the above arrangement, when measuring, hold the handpiece, then fit the first measuring surface on the conical surface, and then fit the second measuring surface on the cylindrical surface. The second swing foot can rotate around the axis of the connecting member, so as to adjust the angle between the second swing foot and the second rotating member. The connecting member can move along the first long hole, so as to adjust the position of the second swing foot on the second rotating member. The second swing foot has more degrees of freedom, which facilitates the fitting of the second measuring surface and the cylindrical surface. Among them, when the connecting piece moves along the first long hole, the sliding rod, the connecting piece, and the ruler move synchronously, so that the center of the scale is always on the axis of the connecting piece, and the first swing foot and the handpiece are fixedly connected, so that the first measuring surface and the axis of the sliding rod are always perpendicular. When the first measuring surface and the second measuring surface are parallel, the cone angle is zero degrees, and the pointer points to the zero scale of the ruler. When the second swing foot rotates around the axis of the connecting piece, the second swing foot drives the pointer to rotate and point to different scales. When the second measuring surface and the cylindrical surface are in contact, the value of the cone surface can be known by reading the scale pointed to by the pointer. By comparing the parameters of the read cone angle drawing, it can be known whether the floating core head is qualified, and the measurement efficiency is high.

[0017] The avoidance groove is used to accommodate the second swing foot and the pointer, so that the pointer and the second swing foot can rotate around the axis of the connecting piece. The observation groove exposes the scale to the air, making it easier for personnel to read the data.

[0018] Furthermore, one end of the ruler away from the sliding rod is located outside the observation slot and forms a hook.

[0019] With the above settings, this application can be hung on the wall when not measuring.

[0020] Furthermore, the first sliding groove and the avoidance groove are connected, and the opposite sides of the sliding rod in the width direction are fixedly connected with convex strips, the extension direction of the convex strips is consistent with the extension direction of the sliding rod, and the opposite sides of the width direction of the first sliding groove are provided with limiting grooves, and the convex strips are slidably connected in the limiting grooves.

[0021] Through the above arrangement, the sliding rod can stably slide along the first sliding groove, and the arrangement of the protruding strip and the limiting groove enables the sliding rod to be stably limited in the first sliding groove.

[0022] Furthermore, a second slide groove is provided on the side of the avoidance groove away from the first slide groove, a pressure plate is slidably connected in the second slide groove, and a first rubber pad for squeezing the pointer and a second rubber pad for squeezing the sliding rod are provided on one side of the pressure plate.

[0023] The above arrangement facilitates fixing the relative positions of the first and second swing pins. Specifically, when the first measuring surface abuts the conical surface and the second measuring surface abuts the cylindrical surface, the pressure plate moves along the second slide groove and drives the first and second rubber pads to move, causing the first rubber pad to press against the pointer, thereby preventing the pointer from continuing to rotate around the axis of the connecting member, and the second rubber pad to press against the sliding rod, thereby preventing the sliding rod from continuing to move along the first slide groove. At this time, the relative positions of the first and second swing pins are fixed, preventing the pointer position from changing when reading the scale, thereby increasing measurement accuracy.

[0024] Furthermore, a pressing key is fixedly connected to a side of the pressing plate away from the pointer.

[0025] Through the above arrangement, the pressure plate can be controlled by fingers to fix the relative positions of the first and second swing pins. One end of the push button is exposed on the outside of the handpiece. When the first measuring surface fits the conical surface and the second measuring surface fits the cylindrical surface, the finger presses the push button, and the pressure plate drives the first and second rubber pads to move. When the first rubber pad is pressed tightly against the pointer, the second rubber pad is also pressed tightly against the sliding rod. At this time, the relative positions of the first and second swing pins can be fixed, making it easier to read the scale. In addition, if the measurement result is qualified, do not release your fingers and continue to place another floating core head that needs to be measured on the first and second measuring surfaces. If the first measuring surface fits the conical surface and the second measuring surface also fits the cylindrical surface, it means that the cone angle of the floating core head is qualified, otherwise it is unqualified.

[0026] Furthermore, a third slide groove is provided on the side of the second slide groove away from the first slide groove, and a guide rod is fixedly connected to the side of the pressure plate away from the pointer. The guide rod is inserted into the third slide groove and slidably connected to the third slide groove, and the guide rod and the bottom of the third slide groove are connected by a spring.

[0027] With the above arrangement, when the finger is released from the push button, under the action of the spring, the first rubber pad and the pointer are disengaged, and the second rubber pad and the sliding rod are disengaged, thereby facilitating the movement of the second swing foot and further facilitating the fitting of the second measuring surface and the cylindrical surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of Example 1.

[0029] Figure 2 This is an exploded view of Example 1.

[0030] Figure 3 This is a schematic diagram of the measurement in Example 1.

[0031] Figure 4 This is a schematic diagram of the measurement of Example 2.

[0032] Figure 5 This is a cross-sectional view of Example 2.

[0033] Figure 6 for Figure 4 AA cross-sectional view. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0035] Example 1:

[0036] See also Figures 1 to 3A mold cone angle detection device includes a handpiece 11, one end of the handpiece 11 is provided with a first swing pin 12 and a second swing pin 13, one end of the handpiece 11 is provided with a first long hole 111, a connecting piece 112 passes through the first long hole 111, the second swing pin 13 is connected to the connecting piece 112, the second swing pin 13 is rotatably connected to the handpiece 11 through the connecting piece 112, the first swing pin 12 is provided with a first measuring surface 121 for fitting with the movable core head 21, and the second swing pin 13 is provided with a second measuring surface 131 for fitting with the movable core head 21.

[0037] Through the above-mentioned setting, it is easy to measure the cone angle b, and the application has low cost and high cost performance. First, the existing floating core head 21 is introduced. The floating core head 21 is an integrally formed structure. The floating core head 21 includes a cylindrical surface 211 and a conical surface 212. The cone angle b is formed between the cylindrical surface 211 and the conical surface 212. When measuring the cone angle b in the present application, the hand-held piece 11 is held by the hand, and then the first measuring surface 121 of the first swing foot 12 is attached to the conical surface 212, and then the second measuring surface 131 of the second swing foot 13 is attached to the cylindrical surface 211. In this process, the second swing foot 13 may rotate around the axis of the connecting piece 112, and the connecting piece 112 may move along the first long hole 111, see Figure 3 . Then remove the floating core head 21 and maintain the relative positions of the first swing foot 12 and the second swing foot 13, place this application on a piece of paper, the first swing foot 12 is basically parallel to the paper surface, and the second swing foot 13 is basically parallel to the paper surface, then use a pen to draw a line along the first measuring surface 121, and also draw a line along the second measuring surface 131, remove this application from the paper, and then measure the angle between the two lines to get the cone angle b, and compare the measured cone angle b with the parameters of the drawing to know whether the cone angle b of the floating core head 21 is qualified. The handpiece 11, the first swing foot 12 and the second swing foot 13 can all be cut from steel plates, with a simple structure and low cost, thereby improving the cost performance, and it is not easy to be damaged.

[0038] As an implementation method, the handpiece 11 includes a first rotating member 113 and a second rotating member 114, one end of the first rotating member 113 and one end of the second rotating member 114 are connected by a first bolt 115, the first swing foot 12 is arranged at an end of the first rotating member 113 away from the first bolt 115, the first long hole 111 is arranged at an end of the second rotating member 114 away from the first bolt 115, the first measuring surface 121 is arranged at an end of the first swing foot 12 away from the first bolt 115, and the second measuring surface 131 is arranged at an end of the second swing foot 13 away from the first bolt 115.

[0039] With the above arrangement, the spacing between the first and second swinging legs 12 and 13 can be adjusted by adjusting the angle between the first and second rotating members 113 and 114, thereby adapting to different sizes of floating core heads 21. Specifically, when the first bolt 115 is loosened, the angle between the first and second rotating members 113 and 114 can be adjusted, while when the first bolt 115 is tightened, the first and second rotating members 113 and 114 are relatively fixed.

[0040] As an implementation method, a second long hole 1131 is provided at one end of the first rotating member 113 away from the first bolt 115, a second bolt 1132 passes through the second long hole 1131, the first swing foot 12 is connected to the second bolt 1132, and the first swing foot 12 is rotatably connected to the first rotating member 113 through the second bolt 1132.

[0041] Through the above setting, the angle between the first swing pin 12 and the first rotating part 113 can be adjusted, so that the first measuring surface 121 and the conical surface 212 can be fitted together by rotating the first swing pin 12. The second bolt 1132 passes through the first swing pin 12 and abuts against the first swing pin 12. When the second bolt 1132 is tightened, the first swing pin 12 can be pressed against the first rotating part 113, thereby fixing the first swing pin 12 on the first rotating part 113. When the second bolt 1132 is loosened, the first swing pin 12 can rotate around the axis of the second bolt 1132. In addition, the second bolt 1132 can move along the second long hole 1131, thereby adjusting the position of the first swing pin 12 on the first rotating part 113 to increase the freedom of the first swing pin 12 to facilitate the fitting of the first measuring surface 121 and the conical surface 212.

[0042] As an implementation manner, the connecting member 112 is configured as a third bolt.

[0043] Through the above arrangement, it is convenient to adjust the position of the second swing pin 13, and it is also convenient to fix the second swing pin 13 on the second rotating member 114. Specifically, the third bolt passes through the second swing pin 13 and abuts against the second swing pin 13. When the third bolt is tightened, the second swing pin 13 can be pressed against the second rotating member 114, thereby fixing the second swing pin 13 on the second rotating member 114. When the third bolt is loosened, the second swing pin 13 can rotate around the axis of the third bolt. In addition, the third bolt can move along the first long hole 111, thereby adjusting the position of the second swing pin 13 on the second rotating member 114 to increase the freedom of the second swing pin 13, so as to facilitate the fit between the second measuring surface 131 and the cylindrical surface 211.

[0044] When the first measuring surface abuts the conical surface and the second measuring surface abuts the cylindrical surface, slowly tighten the second bolt and the third bolt to fix the relative positions of the first swing foot and the second swing foot, making it easier to measure the angle between the first measuring surface and the second measuring surface.

[0045] As an implementation manner, the first rotating member 113 and the second rotating member 114 are made of stainless steel.

[0046] Example 2:

[0047] See also Figures 4 to 6 A mold cone angle detection device includes a handpiece 11, one end of the handpiece 11 is provided with a first swing pin 12 and a second swing pin 13, one end of the handpiece 11 is provided with a first long hole 111, a connecting piece 112 passes through the first long hole 111, the second swing pin 13 is connected to the connecting piece 112, the second swing pin 13 is rotatably connected to the handpiece 11 through the connecting piece 112, the first swing pin 12 is provided with a first measuring surface 121 for fitting with the movable core head 21, and the second swing pin 13 is provided with a second measuring surface 131 for fitting with the movable core head 21.

[0048] As an implementation method, the first swing foot 12 is fixedly connected to the handpiece 11, and a first slide groove 116 is provided in the handpiece 11. The extension direction of the first slide groove 116 is consistent with the extension direction of the handpiece 11. A sliding rod 1161 is slidably connected in the first slide groove 116. The connecting member 112 is fixedly connected to one end of the sliding rod 1161. The end of the sliding rod 1161 away from the connecting member 112 is fixedly connected to a ruler 1162. The ruler 1162 is arc-shaped and provided with scales. The center of the ruler 1162 is located on the axis of the connecting member 112. On the top, an observation groove 117 is provided at the end of the handpiece 11 away from the first swing foot 12, and the scale 1162 is at least partially provided in the observation groove 117. An avoidance groove 118 is provided in the handpiece 11, and the end of the second swing foot 13 away from the second measuring surface 131 is passed through by the connecting member 112 and is rotatably connected to the connecting member 112. The end of the second swing foot 13 away from the second measuring surface 131 is located in the avoidance groove 118 and extends to form a pointer 14. The end of the pointer 14 away from the connecting member 112 is provided in the observation groove 117 and abuts against the scale 1162.

[0049] Through the above arrangement, when measuring, hold the handpiece 11, then fit the first measuring surface 121 on the conical surface 212, and then fit the second measuring surface 131 on the cylindrical surface 211. The second swing foot 13 can rotate around the axis of the connecting member 112, so as to adjust the angle between the second swing foot 13 and the second rotating member 114. The connecting member 112 can move along the first long hole 111, so as to adjust the position of the second swing foot 13 on the second rotating member 114. The second swing foot 13 has more degrees of freedom, which facilitates the fitting of the second measuring surface 131 and the cylindrical surface 211. Among them, when the connecting piece 112 moves along the first long hole 111, the sliding rod 1161, the connecting piece 112, and the scale 1162 move synchronously, so that the center of the scale 1162 is always on the axis of the connecting piece 112, and the first swing foot 12 and the handpiece 11 are fixedly connected, so that the first measuring surface 121 and the axis of the sliding rod 1161 are always perpendicular. When the first measuring surface 121 and the second measuring surface 131 are parallel, the cone angle b is zero degrees, and the pointer 14 points to the zero scale of the scale 1162. When the second swing foot 13 rotates around the axis of the connecting piece 112, the second swing foot 13 drives the pointer 14 to rotate and point to different scales. When the second measuring surface 131 and the cylindrical surface 211 are in contact, the scale pointed to by the pointer 14 can be read to know the value of the cone surface 212. By comparing the parameters of the read cone angle b drawing, it can be known whether the floating core head 21 is qualified, and the measurement efficiency is high.

[0050] The avoidance groove 118 is used to accommodate the second swing foot 13 and the pointer 14, so that the pointer 14 and the second swing foot 13 can rotate around the axis of the connecting member 112. The observation groove 117 exposes the scale 1162 to the air, making it convenient for personnel to read the data.

[0051] As an implementation method, one end of the ruler 1162 away from the sliding rod 1161 is located outside the observation slot 117 and forms a hook 1163.

[0052] With the above settings, this application can be hung on the wall when not measuring.

[0053] As an implementation method, the first slide groove 116 and the avoidance groove 118 are connected, and the opposite sides of the width direction of the sliding rod 1161 are fixedly connected with a protrusion 1164, and the extension direction of the protrusion 1164 is consistent with the extension direction of the sliding rod 1161. The limiting grooves 1165 are provided on the opposite sides of the width direction of the first slide groove 116, and the protrusion 1164 is slidably connected in the limiting groove 1165.

[0054] Through the above arrangement, the sliding rod 1161 can stably slide along the first sliding groove 116 , and the arrangement of the protruding strip 1164 and the limiting groove 1165 enables the sliding rod 1161 to be stably limited in the first sliding groove 116 .

[0055] As an implementation method, a second slide groove 1181 is provided on the side of the avoidance groove 118 away from the first slide groove 116, and a pressure plate 1182 is slidably connected in the second slide groove 1181. A first rubber pad 1183 for squeezing the pointer 14 and a second rubber pad 1184 for squeezing the sliding rod 1161 are provided on one side of the pressure plate 1182.

[0056] The above arrangement facilitates fixing the relative positions of the first swing pin 12 and the second swing pin 13. Specifically, when the first measuring surface 121 abuts the conical surface 212 and the second measuring surface 131 abuts the cylindrical surface 211, the pressing plate 1182 moves along the second slide groove 1181 and drives the first rubber pad 1183 and the second rubber pad 1184 to move, so that the first rubber pad 1183 presses on the pointer 14, thereby preventing the pointer 14 from continuing to rotate around the axis of the connecting member 112, and the second rubber pad 1184 presses on the sliding rod 1161, thereby preventing the sliding rod 1161 from continuing to move along the first slide groove 116. At this time, the relative positions of the first swing pin 12 and the second swing pin 13 are fixed, preventing the position of the pointer 14 from changing when reading the scale, thereby increasing the accuracy of the measurement.

[0057] As an implementation method, a pressing key 1185 is fixedly connected to the side of the pressure plate 1182 away from the pointer 14 .

[0058] Through the above arrangement, the pressing plate 1182 can be controlled by fingers to fix the relative positions of the first swing foot 12 and the second swing foot 13 . One end of the push button 1185 is exposed on the outside of the handpiece 11. When the first measuring surface 121 fits the conical surface 212 and the second measuring surface 131 fits the cylindrical surface 211, the finger presses the push button 1185, and the pressure plate 1182 drives the first rubber pad 1183 and the second rubber pad 1184 to move. When the first rubber pad 1183 is pressed against the pointer 14, the second rubber pad 1184 is also pressed against the sliding rod 1161. At this time, the relative positions of the first swing foot 12 and the second swing foot 13 can be fixed, which is convenient for reading the scale. In addition, if the measurement result is qualified, do not release your finger and continue to place another floating core head 21 to be measured on the first measuring surface 121 and the second measuring surface 131. If the first measuring surface 121 fits the conical surface 212 and the second measuring surface 131 also fits the cylindrical surface 211, it means that the cone angle b of the floating core head 21 is qualified, otherwise it is unqualified.

[0059] As an implementation method, a third slide groove 1186 is provided on the side of the second slide groove 1181 away from the first slide groove 116, and a guide rod 1187 is fixedly connected to the side of the pressure plate 1182 away from the pointer 14. The guide rod 1187 is inserted into the third slide groove 1186 and is slidingly connected to the third slide groove 1186. The guide rod 1187 and the bottom of the third slide groove 1186 are connected by a spring 1188.

[0060] Through the above arrangement, when the finger is released from the press key 1185, under the action of the spring 1188, the first rubber pad 1183 and the pointer 14 are disengaged, and the second rubber pad 1184 and the sliding rod 1161 are disengaged, thereby facilitating the movement of the second swing foot 13, and further facilitating the fitting of the second measuring surface 131 and the cylindrical surface 211.

[0061] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A mold cone angle detection device, characterized in that: The invention also provides a plurality of movable parts, and a plurality of movable parts are installed in the movable part, and a plurality of movable parts are installed in the movable part. The handheld device is connected to one end of the sliding rod, and the end of the sliding rod away from the connecting member is fixedly connected to a ruler, the ruler is arc-shaped and provided with scales, the center of the ruler is located on the axis of the connecting member, the end of the handheld device away from the first swinging foot is provided with an observation slot, the ruler is at least partially disposed in the observation slot, and an avoidance slot is provided in the handheld device, the end of the second swinging foot away from the second measuring surface is passed through by the connecting member and is rotatably connected to the connecting member, the end of the second swinging foot away from the second measuring surface is located in the avoidance slot and extends to form a pointer, and the end of the pointer away from the connecting member is disposed in the observation slot and abuts against the ruler; The first chute is connected to the avoidance groove, and convex strips are fixedly connected to opposite sides of the sliding rod in the width direction, and the extension direction of the convex strips is consistent with the extension direction of the sliding rod. Limiting grooves are provided on opposite sides of the width direction of the first chute, and the convex strips are slidably connected to the limiting grooves; A second sliding groove is provided on a side of the avoidance groove away from the first sliding groove, a pressure plate is slidably connected in the second sliding groove, and a first rubber pad for pressing the pointer and a second rubber pad for pressing the sliding rod are provided on one side of the pressure plate; A third slide groove is provided on the side of the second slide groove away from the first slide groove, and a guide rod is fixedly connected to the side of the pressure plate away from the pointer. The guide rod is inserted into the third slide groove and slidably connected to the third slide groove, and the guide rod and the bottom of the third slide groove are connected by a spring.

2. A mold taper angle detection device according to claim 1, characterized in that: One end of the ruler away from the sliding rod is located outside the observation slot and forms a hook.

3. The mold taper angle detection device according to claim 1, characterized in that: A pressing key is fixedly connected to a side of the pressing plate away from the pointer.

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