Press fitting equipment for water meter pointer and signaling piece

Abstract

The invention discloses press-fitting equipment for a water meter pointer and a signaling piece, which comprises a press-fitting device positioned on a workbench, the press-fitting device comprises a bracket, and the bracket is provided with a main punch through a pressing driving cylinder; the pointer semicircular plate is placed on the top surface of the supporting column; the semicircular main body of the signaling sheet is positioned in the semicircular pit of the semicircular plate of the pointer, and the two pins of the signaling sheet extend out of the semicircular plate; the main punch is provided with a center hole with a downward opening, a pressing head used for abutting against the signaling piece semicircular body and the pointer semicircular plate is arranged in the center hole in a sliding fit mode, and a pressure spring is arranged between the pressing head and the bottom of the center hole. The bottom end of the main punch is provided with a bottom ring face used for bending two pins of the signaling piece downwards. The pressure head is lower than the bottom ring surface in an initial state; a left side driving cylinder and a right side driving cylinder are arranged on the two side walls of the main punch respectively, and a piston rod of each side driving cylinder is provided with a side punch used for bending a pin inwards. The equipment is labor-saving, convenient and efficient to operate, high in assembly precision, high in stability and firm in assembly.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical manufacturing, in particular to a bending and assembling device for a pointer and a signal transmitting piece of a remote water meter. Background Art

[0002] The pointer of the remote water meter is mostly a plastic part, and the upper surface of the plastic pointer needs to be covered with half a metal sheet. In this way, when the pointer rotates, the current of the NB remote transmission module of the water meter can sense the half metal sheet to generate a reading.

[0003] The industry calls the above-mentioned metal sheet a signal plate, which is generally a thin iron sheet, comprising a semicircular main body and two left and right pins; the pointer comprises a semicircular plate, a needle tip convex in front of the semicircular plate, a semicircular pit sunken in the upper surface of the semicircular plate, a sleeve for fitting the pointer shaft on the lower surface of the semicircular plate, and two concave notches on the left and right sides of the semicircular plate's side arc surface.

[0004] The prior art process of assembling the signaling piece and the plastic pointer is as follows. First, the signaling piece and the pointer are stacked in different areas of the work surface, or in the material boxes on the left and right sides; then the worker takes out a pointer and a signaling piece, and puts the semicircular body of the signaling piece into the semicircular pit of the pointer; then bends a pin 90 degrees downward and inserts it into the notch on the same side, and then bends it inward 90 degrees so that the end of the pin sticks to the lower surface of the semicircular plate; and then bends the other pin downward and then inward according to the same steps.

[0005] From the above analysis, it can be seen that the existing technology completely relies on workers to manually bend the pointer pins twice to achieve assembly, which is a pure manual operation. The bending process is laborious, slow and inefficient, and the operation accuracy is not high. The assembly stability is also poor, and it is difficult to accurately bend each pin into the gap every time; therefore, it is time-consuming and labor-intensive, the labor cost is high, and the assembly effect is not good. The pointer and the signaling piece are not firmly connected, and even due to misoperation, the bending angle and position are wrong, causing the pins to be damaged and scrapped. In addition, because the signaling piece is very thin, only 0.1mm, and is stacked in batches in a material box or on a desktop, it is difficult for workers to pick up a single signaling piece accurately and quickly with their fingers, especially when the signaling piece is attached to the desktop or the bottom of the box, it is even more difficult to take it, so the operation is cumbersome and laborious, and the batches of signaling pieces are scattered on the desktop or in the material box, which takes up more space and looks very messy. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a pressing device for a water meter pointer and a signal transmitting piece, which has the advantages of labor-saving, convenient and efficient operation, high assembly precision, strong stability and firm assembly.

[0007] The technical solution of the present invention is to provide a press-fitting device for a water meter pointer and a signaling piece, which includes a workbench and a press-fitting device located on the workbench, the press-fitting device includes a bracket, the bracket is equipped with a downward pressing drive cylinder, and the downward pressing drive cylinder is fixed to a main punch; the bracket is fixed with a support column, the top surface of the support column is provided with left and right limit protrusions and a positioning blind hole, the pointer semicircular plate is placed on the top surface of the support column, the pointer shaft sleeve is inserted into the positioning blind hole and the pointer needle tip is stuck between the two limit protrusions; the semicircular body of the signaling piece is located in the semicircular pit of the pointer semicircular plate and the two pins of the signaling piece extend outward from the semicircular plate; the main punch is provided with a center hole opening downward, and the center hole is provided with a center hole opening downward. The diameter of the center hole is equal to or slightly larger than the diameter of the pointer semicircular plate. A pressure head is slidably fitted in the center hole to press the semicircular body of the signal piece and the pointer semicircular plate against the support column, and a compression spring is provided between the pressure head and the bottom of the center hole; a bottom ring surface is provided at the bottom end of the main punch for bending down the two pins of the signal piece; in the initial state, the pressure head is lower than the bottom ring surface; left and right side drive cylinders are respectively provided on both side walls of the main punch, and each side drive cylinder piston rod is provided with a side punch for inward bending the pins, and transverse through holes are provided on both side walls of the main punch, and each side punch slides with the transverse through hole on the same side of the main punch; concave areas for avoiding air side punches are provided on both sides of the upper part of the support column.

[0008] The working process of the worker operating the press-fitting device is as follows. The worker puts the semicircular body of the signaling piece into the semicircular pit of the pointer and makes the two pins of the signaling piece just catch the two notches of the semicircular plate, thus forming a workpiece to be bent; then the workpiece is placed on the top surface of the support column, so that the sleeve is inserted into the positioning blind hole and the needle tip is caught between the two limit protrusions; then the downward driving cylinder is started to lower the main punch so that the pressure head presses the semicircular body of the signaling piece and the semicircular plate of the pointer tightly against the support column; and the main punch is continued to be lowered so that its bottom ring surface bends the two pins down 90 degrees at the same time; when the main punch is lowered to the lower limit position, the side driving cylinders on both sides are started to drive the two side punches inward synchronously to bend the two bent pins inward 90 degrees again.

[0009] From the above analysis, it can be seen that the press-fitting equipment of the present application has the following advantages.

[0010] The operation is convenient. You only need to insert the signal piece into the pointer, and insert the pointer into the positioning blind hole and the limit protrusion of the support column. The remaining bending processes of the downward bending and inward bending pins are driven by the driving cylinder. There is no need for manual bending, which is more labor-saving, fast bending speed and high efficiency. Before bending, the workpiece is first pressed against the support column by the compression spring and the pressure head, and then the bottom ring surface of the main punch is bent downward, so the downward bending accuracy is high and the stability is strong. Similarly, after the main punch finishes the downward bending, the side punch inward bending pin is accurately started, so the side pressure bending accuracy is also high and the stability is strong. The signal piece pin is used to clamp the pointer at the correct angle and the correct point, ensuring that the signal piece and the pointer are firmly assembled, and the probability of accidental damage and scrapping of the signal piece and the pointer is low.

[0011] As a bonus, a signal-transmitting piece sorting device is also provided on the workbench, the sorting device comprises a packaging tube with an opening facing upward, a tube cover is provided at the opening of the packaging tube, and multiple layers of signal-transmitting pieces are stacked in the vertical tube cavity of the packaging tube; the sorting device also comprises a sorter, the sorter is provided with a vertical blanking channel for the packaging tube with the tube cover removed to be plugged in reverse; a side discharge seam is provided on the side of the sorter, the width of the side discharge seam is greater than the thickness of a single-piece signal-transmitting piece but less than the thickness of a double-piece signal-transmitting piece; the entrance of the side discharge seam is connected with the lower end of the blanking channel; a hollow roller bin is provided below the blanking channel, and a roller is provided in the roller bin for rubbing a signal-transmitting piece at the bottom of the blanking channel horizontally toward the discharge seam outlet, the sorter is also provided with a servo motor, the output shaft of the motor is connected to the roller; the discharge seam is provided with a sensor for sensing whether the signal-transmitting piece located at the discharge seam outlet has been drawn away, and the sensor is connected to the servo motor signal.

[0012] The working process of the sorting device is as follows. First, the upstream signal chip manufacturer will stack the signal chips in the packaging tube and seal them with the tube cover, so the signal chips provided to the assembly workers of the water meter factory are packaged in tubes; the workers only need to remove the tube cover and insert the packaging tube with the opening facing down into the drop channel of the sorter. The signal chips in the packaging tube will fall due to their own weight, and the lowest signal chip will fall against the roller; drive the servo motor to drive the roller to rotate a fixed number of circles, and the signal chip can be rubbed to move horizontally a fixed distance, so that the front part of the signal chip just extends out of the discharge slit outlet, but the middle and rear part of the signal chip is still in the discharge slit and does not fall, so that the worker can take it; if the worker pulls the signal chip out of the discharge slit outlet, the sensor will be triggered and the servo motor will be notified to output a fixed number of circles again, so that the next signal chip will move horizontally a fixed distance, so as to reach the discharge slit outlet, waiting for the worker to take it next time.

[0013] From the above analysis, it can be seen that the sorting device can quickly, conveniently and accurately sort and move single-piece signal-transmitting sheets to the discharge seam for workers to take, thereby facilitating operation and improving workers' assembly efficiency; moreover, the signal-transmitting sheets are stacked and stored in the packaging tube, occupying a small area, saving work surface space, and storing them neatly and orderly.

[0014] The sorting device is preferably provided with a top hole for the ejector to pass through on the bottom wall of the packaging tube; a signaling piece of the packaging tube closest to the tube cover is glued to the side wall of the packaging tube; the purpose of such design is that, firstly, the signaling piece has a light weight and is often stuck or adhered to the side wall of the packaging tube, resulting in material jamming. The worker uses the ejector to pass through the top hole of the bottom wall of the tube and poke the stuck signaling piece to ensure smooth material discharge; secondly, when the tube cover is opened and the packaging tube is inserted upside down into the material discharge channel, each signaling piece may fall off prematurely under gravity and scatter everywhere. Therefore, the topmost signaling piece is temporarily fixed to the side wall of the packaging tube opening by glue, so as to avoid the problem of premature scattering of the signaling piece when it is turned upside down. After the packaging tube and a stack of signaling pieces are plugged in place upside down, it is only necessary to use the ejector to poke through the top hole to destroy the glue of the first signaling piece and the side wall of the packaging tube, so that each signaling piece can fall normally and be smoothly pushed horizontally by the roller.

[0015] The sorting device is further preferably configured such that a step portion protrudes from the side of the sorter, the top surface of the step portion is flush with the lower edge of the discharge slit, a mounting hole is provided on the top surface of the step portion, and a light sensor is provided in the mounting hole; the structural design is reasonable, the sensor is easy to assemble, and the sensor is sensitive and accurate, when the front part of the lowest signal-transmitting piece is pushed horizontally out of the discharge slit by the roller, it just covers the light sensor to make the light flux zero, and after people pull out the signal-transmitting piece, the light flux above the sensor is restored, so the servo motor is accurately triggered to rotate a fixed number of circles to push the next signal-transmitting piece horizontally into place.

[0016] The pressing device is preferably configured such that the bracket includes an upper plate and a lower plate, two guide rods are fixed between the upper plate and the lower plate, and the guide rods are slidably matched with a pressure plate; the cylinder body of the downward pressing drive cylinder is fixed to the upper plate, the piston rod of the downward pressing drive cylinder is fixed to the pressure plate, and the main punch is also fixed to the pressure plate; the support column is fixed to the lower plate; in this way, the stability of the downward pressing of the main punch can be improved, making the downward bending action smoother and more precise.

[0017] The pressing device is further preferably that the top plate of the main punch is penetrated by a guide hole, the pressing head is penetrated by a vertical through hole, a screw is also arranged in the main punch, the head of the screw clamps the lower opening of the vertical through hole, the screw rod passes through the vertical through hole and the guide hole in sequence, a nut is arranged at the top of the screw rod, the nut clamps the upper opening of the guide hole; a compression spring is sleeved on the screw rod; a transition sleeve is fixed on the pressing plate, the upper end of the main punch is fixed to the lower end of the transition sleeve; the part of the screw rod extending out of the guide hole and the nut are both located in the barrel cavity of the transition sleeve; firstly, the above structure is easy to assemble, and only needs to pass the screw through the pressing The head and the main punch top plate, and then screw on the nut; the elastic connection structure has a reasonable layout, the compression spring is just stuck on the screw, and the elastic connection structure is firm and reliable; and through the guidance of the guide hole, it ensures that the lifting and lowering action of the pressure head is smoother, more accurate and stable, and the clamping effect on the workpiece is good; furthermore, the design of the transition sleeve just accommodates the part of the screw extending out of the guide hole and the nut protection in the barrel cavity, avoiding dust from entering the center hole of the main punch from the sliding gap between the screw and the guide hole, and avoiding dust accumulation in the closed space of the center hole, thereby preventing jamming and affecting the operation of the pressure head, side punch and other components.

[0018] The pressing device is further preferably configured such that a plug portion protrudes from the top plate of the main punch, the plug portion is inserted into the lower end of the transition sleeve, the transition sleeve is provided with a transverse hole and the plug portion is provided with a transverse threaded hole, the transition sleeve and the plug portion are fixed by a first bolt that passes through the transverse hole and is screwed into the transverse threaded hole; the above structure is easy and quick to assemble, and only requires inserting the plug portion into the lower end of the transition sleeve and tightening the first bolt.

[0019] As a further preferred embodiment, mounting planes are provided on both sides of the left and right sides of the main punch, each mounting plane is provided with an inner hole, each side drive cylinder body is fixed with a mounting frame, the mounting frame has an outer hole, the mounting frame is fitted with the mounting plane on the same side, and the mounting frame and the mounting plane on the same side are fixed by a second bolt that passes through the outer hole and is screwed into the inner hole; in this way, the assembly of each side drive cylinder and the main punch is convenient and quick, and the connection effect is firm and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a structural schematic diagram of a press-fitting device of a press-fitting device for a water meter pointer and a signal transmitting piece of the present invention.

[0021] Figure 2 The utility model is a cross-sectional structural schematic diagram of the press-fitting device of the water meter pointer and the signal transmitting piece of the present invention.

[0022] Figure 3 It is a schematic diagram of the explosion structure of the pointer, signal plate and support column.

[0023] Figure 4 It is a schematic diagram of the structure after the pin foot of the signal piece of the workpiece to be bent is bent down.

[0024] Figure 5 It is a schematic diagram of the structure after the pin foot of the signal piece of the workpiece to be bent is bent downward and then inward.

[0025] Figure 6 yes Figure 2 A partial enlarged schematic diagram of .

[0026] Figure 7 The present invention is a schematic structural diagram of a signaling piece sorting device of a water meter pointer and a signaling piece press-fitting device.

[0027] Figure 8 It is a schematic cross-sectional view of the signal sheet sorting device of the present invention.

[0028] Fig. 9 It is a schematic diagram of the exploded and enlarged structure of the packaging tube of the invented signal sheet sorting device.

[0029] Fig.10 yes Figure 7 Schematic diagram of the enlarged structure of part A.

[0030] As shown in the figure: 1. Upper plate, 2. Lower plate, 3. Guide rod, 4. Press plate, 5. Press drive cylinder, 6. Main punch, 6.1. Plug part, 6.2. Center hole, 6.3. Guide hole, 6.4. Mounting plane, 6.5. Transverse hole, 7. Transition sleeve, 8. First bolt, 9. Support column, 9.1. Limiting protrusion, 9.2. Positioning blind hole, 9.3. Concave area, 10. Pointer, 10.1. Semicircular plate, 10.2. Bushing, 10.3. Needle tip, 11. Signal transmitter Sheet, 11.1, semicircular body, 11.2, pin, 12, pressure head, 12.1, vertical through hole, 13, compression spring, 14, nut, 15, side drive cylinder, 16, mounting frame, 17, second bolt, 18, side punch, 19, packaging cylinder, 20, cylinder cover, 21, top hole, 22, sorter, 23, blanking channel, 24, discharge gap, 25, roller, 26, roller bin, 27, servo motor, 28, light sensor, 29, mounting hole, 30, step portion. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] like Figures 1 to 10 As shown, the press-fitting device for water meter pointer and signaling piece of the present invention comprises a workbench, on which a press-fitting device and a signaling piece sorting device are arranged. The press-fitting device is located in the middle of the workbench surface, the signaling piece sorting device is located on one side of the surface, and the material box for storing the plastic pointer is located on the other side of the surface. Of course, the plastic pointer can be directly stacked on the other side of the surface without being stored in the material box.

[0033] The press-fitting device comprises a bracket, which comprises an upper plate 1 and a lower plate 2. Two guide rods 3 are fixed between the upper plate 1 and the lower plate 2, and the guide rods 3 are slidably matched with a press plate 4.

[0034] The bracket is equipped with a downward pressing driving cylinder 5, that is, the cylinder body of the downward pressing driving cylinder 5 is fixed to the bracket upper plate 1, and the piston rod of the downward pressing driving cylinder 5 is fixed to the pressing plate 4. The pressing plate 4 is fixed to a main punch 6; specifically, the pressing plate 4 fixes a transition sleeve 7, and a plug part 6.1 is protruded on the top plate of the main punch 6, and the plug part 6.1 is inserted into the lower opening of the transition sleeve 7, and a transverse hole is provided on the side wall of the transition sleeve 7 and a transverse threaded hole is provided on the plug part 6.1, and the transition sleeve 7 and the plug part 6.1 of the main punch 6 are fixed by a first bolt 8 passing through the transverse hole and screwed into the transverse threaded hole.

[0035] A support column 9 is fixed to the lower plate 2 of the bracket. Two left and right limiting protrusions 9.1 and a positioning blind hole 9.2 are provided on the top surface of the support column 9. A semicircular plate 10.1 of a pointer 10 is placed on the top surface of the support column 9. A shaft sleeve 10.2 of the pointer 10 is inserted into the positioning blind hole 9.2 and a needle tip 10.3 of the pointer 10 is stuck between the two limiting protrusions 9.1; a semicircular body 11.1 of the signal transmitting piece 11 is located in a semicircular pit of the semicircular plate 10.1 of the pointer 10 and two pins 11.2 of the signal transmitting piece 11 extend outward from the range of the semicircular plate 10.1.

[0036] The main punch 6 is provided with a center hole 6.2 opening downward, and the diameter of the center hole 6.2 is equal to or slightly larger than the diameter of the semicircular plate 10.1 of the pointer 10, for example, the diameter of the center hole 6.2 is 1.01 to 1.1 times the diameter of the semicircular plate 10.1. A pressing head 12 is slidably fitted in the center hole 6.2 for pressing the semicircular body 11.1 of the signal transmitting piece 11 and the semicircular plate 10.1 of the pointer 10 against the support column 9, and a compression spring 13 is provided between the pressing head 12 and the bottom of the center hole 6.2. Specifically, the top plate of the main punch 6 is penetrated with a guide hole 6.3, the pressure head 12 is penetrated with a vertical through hole 12.1, and a screw 13 is also arranged in the main punch 6. The head of the screw 13 clamps the lower end of the vertical through hole 12.1, and the rod of the screw 13 sequentially penetrates the vertical through hole 12.1 and the guide hole 6.3. The top of the rod of the screw 13 is provided with a nut 14, and the nut 14 clamps the upper end of the guide hole 6.3; the compression spring 13 is sleeved on the rod of the screw 13. The part of the rod of the screw 13 that extends upward from the guide hole 6.3 and the nut 14 are both located in the barrel cavity of the transition sleeve 7.

[0037] Since the center hole 6.2 is hollowed out at the bottom end of the main punch 6, a bottom ring surface is formed for bending down the two pins 11.2 of the signal sending piece 11; in the initial state, the pressure head 12 is lower than the bottom ring surface; in this way, it can be ensured that the pressure head 12 first presses the workpiece against the support column 9, and then bends down the workpiece pins 11.2 from the bottom ring surface.

[0038] Two side drive cylinders 15 are respectively provided on the two side walls of the main punch 6, that is, mounting planes 6.4 are provided on the left and right sides of the main punch 6, each mounting plane 6.4 is provided with an inner hole, and a mounting frame 16 is fixed to each side drive cylinder 15 body, and the mounting frame 16 has an outer hole passing through it. The mounting frame 16 is fitted with the mounting plane 6.4 on the same side, and the mounting frame 16 and the mounting plane 6.4 on the same side are fixed by a second bolt 17 that passes through the outer hole and is screwed into the inner hole.

[0039] The piston rod of each side drive cylinder 15 is provided with a side punch 18 for the inner bending pin 11.2, and the two side walls of the main punch 6 are provided with a transverse through hole 6.5. Each side punch 18 is slidably matched with the transverse through hole 6.5 on the same side of the main punch 6; the two sides of the upper part of the support column 9 are provided with a concave area 9.3 for avoiding the side punch 18. In other words, two concave step surfaces are formed on the left and right sides of the upper part of the support column 9.

[0040] The sorting device comprises a packaging tube 19 with an opening facing upward, each packaging tube 19 is provided with a tube cover 20, a vertical tube cavity of the packaging tube 19 is stacked with multiple layers of signaling sheets 11, the cross section of the vertical tube cavity matches the shape of the upper surface or lower surface of the signaling sheets 11, and the signaling sheets 11 are stacked from the bottom wall of the packaging tube 19 to the tube cover 20. The bottom wall of the packaging tube 19 is provided with a top hole 21 for the ejector pin to pass through; the signaling sheet 11 of the packaging tube 19 closest to the tube cover 20, that is, the highest stacked signaling sheet 11, is bonded to the side wall of the packaging tube 19 by dispensing glue.

[0041] The sorting device includes a sorter 22, which is provided with a vertical blanking channel 23 for the packaging tube 19 with the tube cover 20 removed to be inserted upside down. In other words, the packaging tube 19 is removed from the tube cover 20 and is inserted upside down in the blanking channel 23. A side discharge slit 24 is provided on the side of the sorter 22, and the width of the side discharge slit 24 is greater than the thickness of the single-piece signaling sheet 11 but less than the thickness of the double-piece signaling sheet 11; that is, the width of the discharge slit 24 is between one and two times the thickness of the single-piece signaling sheet 11. The entrance of the side discharge slit 24 is connected to the lower end of the blanking channel 23.

[0042] A hollow roller bin 26 is provided below the blanking channel 23, and a roller 25 is provided in the roller bin 26 for rubbing a signaling piece 11 at the bottom of the blanking channel 23, that is, the lowest signaling piece 11, toward the outlet of the discharge slit 24. The roller 25 is rotatably installed in the roller bin 26. The sorter 22 is also provided with a servo motor 27, which is fixed to the side wall of the sorter 22, and the output shaft of the motor is connected to the roller 25.

[0043] The discharge slot 24 is provided with a sensor for sensing whether the signal transmitting sheet 11 at the outlet of the discharge slot 24 is taken away, and the sensor is connected to the servo motor 27. Specifically, a step portion 30 is protruded from the side of the sorter 22, and the top surface of the step portion 30 is flush with the lower edge of the discharge slot 24. The top surface of the step portion 30 is provided with a mounting hole 29, and a light sensor 28 is provided in the mounting hole 29.

[0044] Of course, the above structure is only a preferred embodiment of the present application, and the specific structure of the present application is also allowed to have a series of changes. For example, the sensor adopts an infrared sensor or a press-type pressure sensor; the bottom wall of the packaging tube 19 may not be provided with a top hole 21, and the outer side of the discharge seam 24 may not be provided with a step surface, but a pressure sensor is directly arranged at the lower edge of the discharge seam 24, etc.

Claims

1. A press-fitting device for a water meter pointer and a signaling piece, characterized in that: It includes a workbench and a pressing device located on the workbench, the pressing device includes a bracket, the bracket is equipped with a downward pressing drive cylinder, the downward pressing drive cylinder is fixed to a main punch; the bracket is fixed with a supporting column, the top surface of the supporting column is provided with left and right limiting protrusions and a positioning blind hole, the pointer semicircular plate is placed on the top surface of the supporting column, the pointer shaft sleeve is inserted into the positioning blind hole and the pointer needle tip is stuck between the two limiting protrusions; the semicircular body of the signaling piece is located in the semicircular pit of the pointer semicircular plate and the two pins of the signaling piece extend outward from the semicircular plate; the main punch is provided with a center hole opening downward, and the aperture of the center hole is equal to or slightly larger than that of the pointer semicircular plate diameter, a pressure head is slidably fitted in the center hole for pressing the semicircular body of the signal piece and the semicircular plate of the pointer against the support column, and a compression spring is arranged between the pressure head and the bottom of the center hole; a bottom ring surface is arranged at the bottom end of the main punch for bending down the two pins of the signal piece; in the initial state, the pressure head is lower than the bottom ring surface; left and right side drive cylinders are respectively arranged on the two side walls of the main punch, and the piston rod of each side drive cylinder is provided with a side punch for bending the pins inward, and transverse through holes are arranged on the two side walls of the main punch, and each side punch slides with the transverse through hole on the same side of the main punch; inner concave areas for avoiding air side punches are arranged on both sides of the upper part of the support column.

2. The press-fitting device for the water meter pointer and the signaling piece according to claim 1, characterized in that: The workbench is also provided with a signal-transmitting piece sorting device, which includes a packaging tube with an opening facing upward, a tube cover at the opening of the packaging tube, and multiple layers of signal-transmitting pieces stacked in the vertical tube cavity of the packaging tube; the sorting device also includes a sorter, which is provided with a vertical blanking channel for the packaging tube with the tube cover removed to be plugged in; a side discharge seam is provided on the side of the sorter, and the width of the side discharge seam is greater than the thickness of a single-piece signal-transmitting piece but less than the thickness of a double-piece signal-transmitting piece; the entrance of the side discharge seam is connected with the lower end of the blanking channel; a hollow roller bin is provided below the blanking channel, and a roller is provided in the roller bin for rubbing a signal-transmitting piece at the bottom of the blanking channel horizontally toward the discharge seam outlet, and the sorter is also provided with a servo motor, and the output shaft of the motor is connected to the roller; the discharge seam is provided with a sensor for sensing whether the signal-transmitting piece located at the discharge seam outlet has been drawn away, and the sensor is connected to the servo motor signal.

3. The press-fitting device for the water meter pointer and the signaling piece according to claim 2, characterized in that: The bottom wall of the packaging tube is provided with a top hole for the ejector pin to pass through; a signal transmitting piece of the packaging tube closest to the tube cover is glued to the side wall of the packaging tube.

4. The press-fitting device for the water meter pointer and the signaling piece according to claim 2, characterized in that: A step portion is protruded from the side of the sorter, the top surface of the step portion is flush with the lower edge of the discharge seam, a mounting hole is arranged on the top surface of the step portion, and a light sensor is arranged in the mounting hole.

5. The press-fitting device for water meter pointer and signaling piece according to claim 1, characterized in that: The bracket includes an upper plate and a lower plate, two guide rods are fixed between the upper plate and the lower plate, and the guide rods are slidably matched with a pressure plate; the cylinder body of the downward pressure drive cylinder is fixed to the upper plate, the piston rod of the downward pressure drive cylinder is fixed to the pressure plate, and the main punch is also fixed to the pressure plate; the support column is fixed on the lower plate.

6. The press-fitting device for the water meter pointer and the signaling piece according to claim 5, characterized in that: A guide hole is passed through the top plate of the main punch, and a vertical through hole is passed through the pressure head. A screw is also arranged in the main punch, and the screw head clamps the lower end of the vertical through hole, and the screw rod passes through the vertical through hole and the guide hole in sequence. A nut is provided at the top of the screw rod, and the nut clamps the upper end of the guide hole; a compression spring is fitted on the screw rod; a transition sleeve is fixed on the pressure plate, and the upper end of the main punch is fixed to the lower end of the transition sleeve; the part of the screw rod extending out of the guide hole and the nut are both located in the barrel cavity of the transition sleeve.

7. The press-fitting device for the water meter pointer and the signaling piece according to claim 6, characterized in that: A plug part is protruding on the top plate of the main punch, and the plug part is inserted into the lower opening of the transition sleeve. The transition sleeve is provided with a transverse hole and the plug part is provided with a transverse threaded hole. The transition sleeve and the plug part are fixed by a first bolt passing through the transverse hole and screwed into the transverse threaded hole.

8. The press-fitting device for water meter pointer and signaling piece according to claim 1, characterized in that: There are mounting planes on both sides of the main punch, each mounting plane is provided with an inner hole, each side drive cylinder is fixed with a mounting frame, the mounting frame has an outer hole, the mounting frame is fitted with the mounting plane on the same side, and the mounting frame and the mounting plane on the same side are fixed by a second bolt that passes through the outer hole and is screwed into the inner hole.

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