Quantitative glue supply device based on servo motor driving
By using servo motor driving and sensor regulation solutions in the quantitative rubber supply device, the problem of screw pushing rubber causes the barrel to rupture, achieving stable protection of the barrel and the accuracy of quantitative rubber supply.
Patent Information
- Application Number
- CN202421126823.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-22
AI Technical Summary
In the existing quantitative glue supply device, the screw pushing solution has the problem of excessive thrust causing the rubber barrel to rupture, especially in the case of small rubber barrels, which can easily cause damage to the rubber barrel and increase costs.
The quantitative glue supply device based on servo motor drive is adopted. By setting a torque sensor on the output shaft of the servo motor and setting a glue pressure sensor on the output part, combined with the protection measures of the clamp seat, the output of the servo motor is controlled in real time. Avoid cracking of the barrel.
Effectively control the pressure on the rubber barrel, avoid the rubber barrel rupture, ensure the stable operation of the quantitative rubber supply device, and reduce the cost of maintaining and replacing the rubber barrel.
Smart Images
Figure CN222490807U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of glue conveying, in particular to a quantitative glue supply device driven by a servo motor. Background Art
[0002] In the current prior art glue supply devices, conventional glue supply solutions generally include using a cylinder to press glue and using a screw to push glue. The cylinder or the screw is used to push the piston of the glue barrel to squeeze the glue out of the glue barrel. However, the cylinder press glue solution has the disadvantages of inaccurate glue quantity and glue quantity deviation. Therefore, in quantitative glue supply devices that require precise quantitative glue supply, the screw push glue solution is often used.
[0003] However, the following problems still exist in the lead screw glue pushing: the lead screw uses the principle of the screw pair to convert the rotational motion of the motor into linear motion, generating a large torsional torque, which can easily form excessive thrust on some glue barrels, causing the side wall of the glue barrel to expand instantly, which may sometimes cause excessive glue output or even cause the glue bottle to rupture, especially for some small quantitative glue supply devices with smaller glue barrel capacities, such as a 400cc glue barrel. Damage to the glue barrel will not only affect normal operations, but also require subsequent replacement of the glue barrel and site cleaning, which will increase a lot of costs.
[0004] Therefore, based on the quantitative glue supply device in the prior art, new improvement solutions can be found to solve the above technical problems. Utility Model Content
[0005] In view of this, the purpose of the present invention is to provide a quantitative glue supply device driven by a servo motor to solve the above problems.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:
[0007] The utility model provides a quantitative glue supply device driven by a servo motor, which includes a vertical plate, a glue barrel, a glue outlet, a screw glue pushing portion and a servo motor. The glue barrel is a hollow structure for containing glue; the glue outlet is connected to the bottom of the glue barrel; the screw glue pushing portion includes a glue pressing piston, a ball screw, a screw sliding seat, a guide rail and a glue pushing rod, the glue pressing piston is sealed on the top opening of the glue barrel, the bottom end of the glue pushing rod is connected to the glue pressing piston, the top end of the glue pushing rod is connected to the screw sliding seat, the guide rail is fixed on the vertical plate, the screw sliding seat is slidably connected to the guide rail through a slider, the ball screw is used to drive the screw sliding seat to slide along the guide rail, so as to drive the glue pushing rod to press the glue pressing piston downward to squeeze the glue in the glue barrel toward the glue outlet; the output shaft of the servo motor is connected to the ball screw.
[0008] Among them, a torque sensor is arranged on the output shaft of the servo motor to detect the torque of the output shaft, and a glue outlet pressure sensor is arranged on the glue outlet part to detect the pressure inside the glue outlet part. A clamp seat is fixed on the vertical plate, and the clamp seat includes a fixed base and a clamp cover hinged on the fixed base. The clamp cover can be rotated to be aligned with the fixed base, so that the clamp seat is arranged on the outer periphery of the side wall of the glue barrel.
[0009] Preferably, a locking pin is rotatably connected to the fixed base, the locking pin passes through a clamp cover, a groove is formed on the side of the clamp cover to allow the locking pin to rotate, the end of the locking pin is connected to a screw pair screw cover by a screw pair, the screw pair screw cover is used to abut the clamp cover, limit the clamp cover, and lock the clamp cover and the fixed base to fit each other.
[0010] Preferably, there are two clamping seats, one of which is located at the top of the side wall of the glue barrel, and the other clamping seat is located at the bottom of the side wall of the glue barrel.
[0011] Preferably, a glue barrel pressure sensor is provided on the clamp cover to detect the pressure applied by the side wall of the glue barrel to the clamp cover.
[0012] Preferably, the number of the glue barrels is two, and the glue outlet part includes a mixing tube, a valve body and a glue outlet needle. The glue outlet needle is connected to the mixing tube, and the two glue barrels are connected to the mixing tube through the valve body, so that the glue inside the two glue barrels converges into the mixing tube and flows out from the glue outlet needle. The glue outlet pressure sensor is arranged on the valve body.
[0013] Preferably, a rotary valve is provided between the glue discharge needle and the mixing tube.
[0014] Preferably, the quantitative glue supply device further comprises a controller, the controller is connected to an alarm, and the servo motor, the torque sensor and the glue outlet pressure sensor are respectively connected to the controller.
[0015] Preferably, photoelectric sensors connected to the controller are respectively provided at both ends of the guide rail, which are used to trigger the controller to control the stop and reversal of the servo motor. A trigger sensing sheet is provided on one side of the screw sliding seat. The trigger sensing sheet can traverse both ends of the guide rail as the screw sliding seat moves, so as to respectively trigger the photoelectric sensors at both ends of the guide rail.
[0016] Preferably, the screw rod rubber pushing part further includes a protective outer cover, and the ball screw, screw rod sliding seat, guide rail and rubber pushing rod are covered in the protective outer cover.
[0017] The technical effects achieved by the technical solution of the utility model mainly include:
[0018] In order to solve the problem that the screw rod push glue part with the advantage of precise quantitative supply of glue is prone to generate excessive thrust and cause the glue barrel to rupture, the above-mentioned quantitative glue supply device is provided with a torque sensor on the output shaft of the servo motor, and a glue discharge pressure sensor is provided on the glue discharge part, so that the operator can timely adjust the output of the servo motor according to the readings of the torque sensor and the glue discharge pressure sensor. The torque sensor and the glue discharge pressure sensor respectively located at the front and rear ends of the glue supply device can further cooperate with the sensor to trigger the alarm and the controller. If the torque sensor or the glue discharge pressure sensor detects an abnormal value, the sensor can feedback a signal to the controller, and the controller controls the alarm to sound an alarm, so as to promptly remind the operator to perform debugging and maintenance; and the clamp cover can be rotated to be aligned with the fixed base, wrapping the outer periphery of the side wall of the glue barrel, so that the clamp seat is set on the outer periphery of the side wall of the glue barrel. When the internal space of the glue barrel is squeezed, the outer periphery of the side wall of the glue barrel abuts against the clamp seat, thereby limiting the expansion of the glue barrel, protecting the glue barrel, and avoiding the rupture of the glue barrel as much as possible. Under the above triple protection settings, even if a screw-type rubber pusher is used to replace a cylinder rubber pusher that may cause a glue amount deviation, the pressure on the rubber barrel can be effectively controlled, and it is not prone to rupture, thus maintaining the stable operation of the quantitative glue supply device and ensuring operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a three-dimensional diagram of a quantitative glue supply device driven by a servo motor provided in an embodiment of the utility model;
[0020] Figure 2 is a schematic diagram of the internal structure of the quantitative glue supply device;
[0021] Figure 3 is a schematic diagram of the internal structure of the quantitative glue supply device from another perspective;
[0022] Figure 4 It is a schematic diagram of the state when a clamping seat in the quantitative glue supply device is opened.
[0023] The reference numerals in the above drawings are:
[0024] Vertical plate 1, clamping seat 11, fixed base 111, clamping cover 112, locking pin 12, screw pair screw cover 13, glue barrel 2, glue discharge part 3, mixing tube 31, valve body 32, glue discharge needle 33, rotary valve 34, screw rod glue pushing part 4, glue pressing piston 41, ball screw 42, screw rod sliding seat 43, guide rail 44, glue pushing rod 45, trigger sensor 46, protective cover 47, servo motor 5, glue discharge pressure sensor 6, photoelectric sensor 7. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the specific embodiments of the utility model are described in detail below in conjunction with the accompanying drawings. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the utility model shown in the accompanying drawings and described according to the accompanying drawings are merely exemplary, and the utility model is not limited to these embodiments.
[0026] In order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solutions according to the present invention are shown in the drawings, while other details that are not very relevant are omitted. Figure 2 and Figure 3 In the figure, the protective cover 47 described below blocks other internal structures. In order to clearly show other structures of the screw rod rubber pushing part 4, the protective cover 47 is omitted. Figure 2 and Figure 3 Middle protective cover 47.
[0027] Reference Figures 1 to 3 As shown, an embodiment of the utility model provides a quantitative glue supply device driven by a servo motor, which includes a vertical plate 1, a glue barrel 2, a glue outlet part 3, a screw rod glue pushing part 4 and a servo motor 5.
[0028] The glue barrel 2 is a hollow structure for containing glue; the glue outlet 3 is connected to the bottom of the glue barrel 2; the screw rod glue pushing part 4 includes a glue pressing piston 41, a ball screw 42, a screw rod sliding seat 43, a guide rail 44 and a glue pushing rod 45, the glue pressing piston 41 is sealed on the top opening of the glue barrel 2, the bottom end of the glue pushing rod 45 is connected to the glue pressing piston 41, the top end of the glue pushing rod 45 is connected to the screw rod sliding seat 43, and the guide rail 44 is fixed to the glue pressing piston 41. On the vertical plate 1, the screw sliding seat 43 is slidably connected to the guide rail 44 through a slider, and the screw sliding seat 43 is connected to the screw nut of the ball screw 42 and moves along the stroke of the ball screw 42. The ball screw 42 is used to drive the screw sliding seat 43 to slide along the guide rail 44 to drive the glue pushing rod 45 to press down the glue pressing piston 41 to squeeze the glue in the glue barrel 2 toward the glue outlet 3; the output shaft of the servo motor 5 is connected to the ball screw 42.
[0029] Among them, a torque sensor is provided on the output shaft of the servo motor 5 to detect the torque of the output shaft. The operator can compare the reading of the torque sensor with the predetermined normal torque data range. If it is found that the current torque value read by the torque sensor is too large, the output of the servo motor 5 can be adjusted in time. Furthermore, in addition to setting a sensor at the front end driving source of the device, a glue discharge pressure sensor 6 is provided on the glue discharge part 3 at the rear end of the device for discharging glue to detect the pressure inside the glue discharge part 3. Similarly, the operator can compare the reading of the glue discharge pressure sensor 6 with the predetermined normal pressure value range, and timely adjust the output of the servo motor 5 to control the glue pressing thrust. And, combined with Figure 3 and Figure 4 As shown, a clamping seat 11 is fixed on the vertical plate 1, and the clamping seat 11 includes a fixed base 111 and a clamping cover 112 hinged on the fixed base 111. The clamping cover 112 can be rotated to be aligned with the fixed base 111 to form a gap that just makes room for the glue barrel 2 to pass through, wrapping the outer periphery of the side wall of the glue barrel 2, so that the clamping seat 11 is sleeved on the outer periphery of the side wall of the glue barrel 2. When the internal space of the glue barrel 2 is squeezed by the glue pressing piston 41, the outer periphery of the side wall of the glue barrel 2 abuts against the clamping seat 11, limiting the expansion of the glue barrel 2, thereby avoiding the rupture of the glue barrel 2 under the screw rod glue pushing scheme as much as possible, and playing a role in protecting the glue barrel 2. Under the above triple protection setting, even if the screw rod glue pushing part 4 is used to replace the cylinder glue pushing that will cause the glue amount to deviate, the pressure on the glue barrel 2 can be effectively controlled, and it is not easy to rupture, and the stable operation of the quantitative glue supply device can be maintained, so that the advantages of accurate glue supply and stable quantitative supply of the screw rod glue pushing part 4 can be brought into play.
[0030] Specifically, the fixed base 111 is rotatably connected with a locking pin 12. In this embodiment, the locking pin 12 is located at the opposite end away from the hinged joint between the clamp cover 112 and the fixed base 111. The locking pin 12 passes through the clamp cover 112. A slot is formed on the side of the clamp cover 112 to allow the locking pin 12 to rotate. The end of the locking pin 12 is connected to a screw pair screw cover 13 by a screw pair. The screw pair screw cover 13 is used to abut the clamp cover 112, limit the clamp cover 112, and lock the clamp cover 112 and the fixed base 111. Figure 4 As shown, the operator twists the screw pair screw cover 13 to make the screw pair screw cover 13 move away from the clamp cover 112 and no longer abut the outer wall of the clamp cover 112, so that the locking pin 12 can be turned out from the slot on the side of the clamp cover 112 to release the lock of the clamp seat 11. The clamp cover 112 can be rotated freely again to open the clamp seat 11 and expose the covered rubber barrel 2.
[0031] In this embodiment, in order to focus on protecting the top and bottom of the glue barrel 2 where high pressure is generated and prone to rupture, there are two clamping seats 11, one of which is located at the top of the side wall of the glue barrel 2, and the other is located at the bottom of the side wall of the glue barrel 2.
[0032] Similarly, a rubber barrel pressure sensor is provided on the clamp cover 112 to detect the pressure applied by the side wall of the rubber barrel 2 to the clamp cover 112. When the rubber barrel 2 expands, the side wall abuts against the clamp cover 112 to obtain the pressure value there, and further determine whether the rubber barrel 2 is prone to rupture.
[0033] There are two glue barrels 2, and the glue outlet part 3 includes a mixing tube 31, a valve body 32 and a glue outlet needle 33. The glue outlet needle 33 is connected to the mixing tube 31. The two glue barrels 2 are connected to the mixing tube 31 through the valve body 32, so that the glue inside the two glue barrels 2 converges into the mixing tube 31 and flows out from the glue outlet needle 33. The glue outlet pressure sensor 6 is arranged at the valve body 32.
[0034] A rotary valve 34 is provided between the glue discharge needle 33 and the mixing tube 31. The rotary valve 34 is connected to a rotary cylinder and is opened and closed by the rotary cylinder. The rotary valve 34 has a larger valve port than the traditional Y-type valve, is suitable for supplying a large amount of glue, avoids excessive stroke of repeated stretching of the cylinder, has a small wear on the valve port, and is not prone to glue leakage and glue dripping.
[0035] On the basis of the above-mentioned torque sensor and glue discharge pressure sensor 6, the quantitative glue supply device also includes a controller, the controller is connected to an alarm, the servo motor 5, torque sensor and glue discharge pressure sensor 6 are respectively connected to the controller, and further cooperate with the existing conventional sensor trigger alarm and controller, and use the existing control program. Before the operation, the operator places the glue barrel 2 filled with glue into the clamp seat 2 for clamping, and can input the predetermined torque parameters of the servo motor on the controller. The quantitative glue supply device is started through the controller control, and the servo motor 5 starts to drive the screw rod glue pushing part 4 to squeeze the glue in the glue barrel 2. If the torque sensor or the glue discharge pressure sensor 6 detects an abnormal value, the sensor can feedback the signal to the controller by relying on the existing sensor trigger program mechanism, and the controller controls the alarm to sound an alarm, so as to promptly remind the operator to perform debugging and maintenance.
[0036] The travel movement of the screw sliding seat 43 on the ball screw 42 is generally triggered and controlled by the photoelectric sensor 7. In this embodiment, photoelectric sensors 7 connected to the controller are respectively provided at both ends of the guide rail 44, which are used to trigger the controller to control the stop and reversal of the servo motor 5. A trigger sensing sheet 46 is provided on one side of the screw sliding seat 43. The trigger sensing sheet 46 can traverse the two ends of the guide rail 44 as the screw sliding seat 43 moves, so as to trigger the photoelectric sensors 7 at both ends of the guide rail 44 respectively.
[0037] Furthermore, the screw rod rubber pushing part 4 also includes a protective outer cover 47 , and the ball screw 42 , the screw rod sliding seat 43 , the guide rail 44 and the rubber pushing rod 45 are covered in the protective outer cover 47 .
[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0039] The above is only a specific implementation of the present application. 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 application. These improvements and modifications should also be regarded as the scope of protection of the present application.
Claims
1. A quantitative glue supply device driven by a servo motor, characterized in that: include: Vertical plate (1); A glue barrel (2), the glue barrel (2) being a hollow structure and used for containing glue; A glue outlet portion (3), the glue outlet portion (3) being in communication with the bottom of the glue barrel (2); A screw rod rubber pushing part (4), the screw rod rubber pushing part (4) comprises a glue pressing piston (41), a ball screw (42), a screw rod sliding seat (43), a guide rail (44) and a glue pushing rod (45), the glue pressing piston (41) is sealed on the top opening of the glue barrel (2), the bottom end of the glue pushing rod (45) is connected to the glue pressing piston (41), the top end of the glue pushing rod (45) is connected to the screw rod sliding seat (43), the guide rail (44) is fixed on the vertical plate (1), the screw rod sliding seat (43) is slidably connected to the guide rail (44) through a slider, the ball screw (42) is used to drive the screw rod sliding seat (43) to slide along the guide rail (44), so as to drive the glue pushing rod (45) to press down the glue pressing piston (41), so as to squeeze the glue in the glue barrel (2) toward the glue outlet part (3); A servo motor (5), wherein an output shaft of the servo motor (5) is connected to a ball screw (42); The output shaft of the servo motor (5) is provided with a torque sensor to detect the torque of the output shaft; the glue outlet portion (3) is provided with a glue outlet pressure sensor (6) to detect the pressure inside the glue outlet portion (3); a clamping seat (11) is fixed on the vertical plate (1); the clamping seat (11) comprises a fixed base (111) and a clamping cover (112) hinged on the fixed base (111); the clamping cover (112) can be rotated to be aligned with the fixed base (111), so that the clamping seat (11) is sleeved on the outer periphery of the side wall of the glue barrel (2).
2. The quantitative glue supply device based on servo motor drive according to claim 1 is characterized in that: A locking pin (12) is rotatably connected to the fixed base (111), the locking pin (12) penetrates a clamping cover (112), a groove is formed on the side of the clamping cover (112) to allow the locking pin (12) to rotate, the end of the locking pin (12) is connected to a screw pair screw cover (13) by a screw pair, the screw pair screw cover (13) is used to abut against the clamping cover (112), limit the clamping cover (112), and lock the clamping cover (112) and the fixed base (111) to be in mutual engagement.
3. The quantitative glue supply device based on servo motor drive according to claim 1 is characterized in that: The number of the clamping seats (11) is two, one of which is located at the top of the side wall of the glue barrel (2), and the other of which is located at the bottom of the side wall of the glue barrel (2).
4. The quantitative glue supply device based on servo motor drive according to claim 1 is characterized in that: The clamping cover (112) is provided with a glue barrel pressure sensor to detect the pressure applied by the side wall of the glue barrel (2) to the clamping cover (112).
5. The quantitative glue supply device based on servo motor drive according to claim 1, characterized in that: The number of the glue barrels (2) is two, and the glue outlet portion (3) comprises a mixing tube (31), a valve body (32) and a glue outlet needle (33). The glue outlet needle (33) is connected to the mixing tube (31). The two glue barrels (2) are connected to the mixing tube (31) through the valve body (32), so that the glue inside the two glue barrels (2) converges into the mixing tube (31) and flows out from the glue outlet needle (33). The glue outlet pressure sensor (6) is arranged at the valve body (32).
6. The quantitative glue supply device based on servo motor drive according to claim 5, characterized in that: A rotary valve (34) is provided between the glue discharge needle (33) and the mixing tube (31).
7. The quantitative glue supply device based on servo motor drive according to claim 1 is characterized in that: The quantitative glue supply device also includes a controller, the controller is connected to an alarm, and the servo motor (5), the torque sensor and the glue outlet pressure sensor (6) are respectively connected to the controller.
8. The quantitative glue supply device based on servo motor drive according to claim 7 is characterized in that: The two ends of the guide rail (44) are respectively provided with photoelectric sensors (7) connected to the controller for triggering the controller to control the servo motor (5) to stop and reverse. A trigger sensing sheet (46) is provided on one side of the screw rod sliding seat (43). The trigger sensing sheet (46) moves with the screw rod sliding seat (43) and can traverse the two ends of the guide rail (44) to respectively trigger the photoelectric sensors (7) at the two ends of the guide rail (44).
9. The quantitative glue supply device based on servo motor drive according to claim 1, characterized in that: The screw rod rubber pushing part (4) also includes a protective outer cover (47), and the ball screw (42), the screw rod sliding seat (43), the guide rail (44) and the rubber pushing rod (45) are covered in the protective outer cover (47).