Plunger servo driving mechanism of drip casting machine

Abstract

The utility model discloses a plunger servo driving mechanism of a drip casting machine, which comprises unit mechanisms symmetrically arranged on two sides of a distribution valve body, the unit mechanism on each side comprises a plunger, a plunger fixing frame and a servo lead screw mechanism, the plungers are arranged in plunger cavities on two sides of the distribution valve body, and the servo lead screw mechanism is arranged on the plunger fixing frame. The servo lead screw mechanism comprises a servo motor, a supporting frame, a transmission mechanism and a lead screw nut pair, an output shaft of the servo motor is connected with a nut in the lead screw nut pair through the transmission mechanism, and a lead screw in the lead screw nut pair is fixed to the plunger fixing frame. The device is characterized in that the servo motor is fixed on one side, back on to the distribution valve body, of the supporting frame, an output shaft of the servo motor is arranged towards the distribution valve body, an interlayer close to the servo motor is arranged in the supporting frame, and a main transmission wheel in the transmission mechanism is fixed on the output shaft and located in the interlayer. The mechanism not only can solve the problem that the servo motor interferes with the replacement of the plunger, but also can prevent the main transmission wheel in the transmission mechanism from being touched by mistake, and is better in operation stability.

Description

TECHNICAL FIELD

[0001] The utility model relates to a plunger servo drive mechanism of a drip casting machine. BACKGROUND

[0002] The drip casting machine is the main casting equipment for chocolate food production at present, which is usually composed of a feeding hopper, a distribution valve body, a plunger servo drive mechanism and a distribution plate group. The feeding hopper is arranged above the distribution valve body and used to supply material to the inner cavity of the distribution valve body. A controllable valve core is arranged in the inner cavity to control the communication between the valve cavity and the two plunger cavities. The plunger servo drive mechanism usually includes two sets of unit mechanisms symmetrically arranged on both sides of the valve body, which are used to drive the corresponding plungers to move along the plunger cavities, so as to push the material in the valve cavity to the distribution plate group below.

[0003] Each unit mechanism of the plunger servo drive mechanism includes a plunger, a plunger fixing frame and a servo lead screw mechanism for driving the plunger to move forward and backward. The servo lead screw mechanism includes a servo motor, a support frame, a transmission mechanism and a screw nut pair. The servo motor is fixed on the support frame. The main transmission wheel in the transmission mechanism is fixed with the output shaft of the servo motor. The inner ring of the slave transmission wheel in the transmission mechanism is fixed with a screw nut, which is rotatably arranged in the rotating limiting seat at the lower part of the support frame and cooperates with the screw rod. The screw rod is fixed with the plunger fixing frame.

[0004] However, the design structure of the plunger servo drive mechanism has the following disadvantages in practice:

[0005] 1. The servo motor is fixed on the side of the support frame facing the distribution valve body and above the plunger fixing frame for mounting the plunger. This position greatly interferes with the disassembly and assembly of the plunger, which brings many inconveniences to the use and maintenance of the drip casting machine.

[0006] 2. Since the output shaft of the servo motor is arranged outward (facing away from the distribution valve body), the main transmission wheel in the transmission mechanism is arranged on the side of the support frame facing away from the distribution valve body and completely exposed to the outside of the mechanism, which is easy to cause the problem of accidental touch and injury of the staff.

[0007] 3. The output shaft of the servo motor needs to pass through the support frame and then fix the main transmission wheel at the front end, so that the main transmission wheel is far away from the main body of the servo motor, which is easy to cause the shaft jumping deviation due to machining and installation, resulting in the decrease of the running stability of the equipment. UTILITY MODEL CONTENTS

[0008] The utility model aims at the deficiencies in the prior art mentioned in the background and provides a plunger servo drive mechanism of a drip casting machine, which can not only solve the problem of interference of the servo motor with the replacement of the plunger, but also prevent the main transmission wheel in the transmission mechanism from being accidentally touched and has better running stability of the mechanism.

[0009] The technical scheme of the utility model discloses: a kind of plunger servo drive mechanism of drip irrigation machine, including unit mechanism being symmetrically arranged in the both sides of distribution valve body, the unit mechanism of each side includes plunger, plunger fixed frame and servo screw mechanism, plunger is located in the plunger cavity of the both sides of distribution valve body, and servo screw mechanism includes servo motor, support frame, transmission mechanism and screw nut pair, the output shaft of servo motor is connected with the nut in screw nut pair via transmission mechanism, and the screw rod matched with nut in screw nut pair is fixed with plunger fixed frame;Its characterized in that servo motor is fixed in the side of support frame away from distribution valve body, the output shaft of this servo motor is arranged towards the direction of distribution valve body, and support frame is equipped with interlayer close to servo motor, and the main transmission wheel in transmission mechanism is fixed on output shaft and located in the interlayer.

[0010] Further, the support frame includes first vertical plate and second vertical plate distributed at intervals in the utility model, wherein the first vertical plate is between the distribution valve body and the second vertical plate, and the interlayer is formed by clamping between the first vertical plate and the second vertical plate; and the servo motor is fixed on the second vertical plate, and the output shaft thereof passes through the hole provided on the second vertical plate and is fixed with the main transmission wheel.

[0011] Further, the transmission mechanism further includes from transmission wheel and transmission medium connecting the main transmission wheel and the from transmission wheel in the utility model, and the screw nut pair further includes rotating limiting seat and rotating sleeve assembled in the rotating limiting seat via a plurality of bearings, the outer periphery of the rotating sleeve is fixed with the inner ring of the from transmission wheel, and the inner ring of the rotating sleeve is fixed with the nut; the first vertical plate and the second vertical plate are both fixed on the upper part of the rotating limiting seat.

[0012] Further, the first vertical plate is provided with an avoiding hole for the output shaft of the servo motor in the utility model, and the end of the output shaft is fixed with a counterweight shaft cap, which is located in the avoiding hole.

[0013] Further, the transmission mechanism is a synchronous belt transmission mechanism in the utility model, the main transmission wheel is a main synchronous belt wheel, the from transmission wheel is a from synchronous belt wheel, and the transmission medium is a belt.

[0014] Further, the transmission mechanism is a synchronous chain transmission mechanism in the utility model, the main transmission wheel is a main synchronous chain wheel, the from transmission wheel is a from synchronous chain wheel, and the transmission medium is a chain.

[0015] The utility model has the advantages of:

[0016] 1. The structure of the utility model discloses, servo motor is fixed in the support frame back to the one side of distribution valve body, namely servo motor is moved away from the position of being located above the plunger fixed frame originally, make its no longer cause interference to the disassembly of plunger, thereby bring the convenience to the use and maintenance of drop pouring machine.

[0017] 2. The structure of the utility model discloses, the output shaft of servo motor is set to distribution valve body direction, then the main transmission wheel is fixed on it, and further the interlayer is set in the support frame to accommodate main transmission wheel, prevent main transmission wheel from being exposed to the outside, thereby effectively avoid the risk that main transmission wheel is mistaken by staff, improve the equipment use safety.

[0018] 3. The structure of the utility model discloses, compared with conventional technology, the fixed position of main transmission wheel on the output shaft is closer to servo motor, and the position of the end of original output shaft is added counterweight shaft cap, these measures all effectively reduce the shaft runout deviation caused by output shaft processing and installation, make the operation stability of the mechanism of the utility model whole better. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model will be further described below in combination with the drawings and examples:

[0020] Figure 1 It is the structure schematic drawing of the utility model.

[0021] Among them: 1, distribution valve body, 101, plunger cavity, 2, plunger, 3, plunger fixed frame, 4, servo motor, 401, output shaft, 5, support frame, 501, first vertical plate, 501a, avoid hole, 502, second vertical plate, 6, screw rod, 7, main transmission wheel, A, interlayer, 8, from transmission wheel, 9, transmission medium, 10, nut, 11, counterweight shaft cap, 12, rotation limit seat, 13, rotation sleeve, 14, bearing. DETAILED DESCRIPTION

[0022] Example: the specific implementation of the plunger servo drive mechanism of the drop pouring machine provided by the utility model is as follows in combination with the drawings: Figure 1

[0023] ​The plunger servo driving mechanism of the drop irrigation machine is composed of a distribution valve body 1 and unit mechanisms symmetrically arranged on both sides of the distribution valve body 1, each unit mechanism comprising a plunger 2, a plunger fixing frame 3 and a servo lead screw mechanism, the plunger 2 being arranged in a plunger cavity 101 on both sides of the distribution valve body 1, and the servo lead screw mechanism comprising a servo motor 4, a support frame 5, a transmission mechanism and a screw nut pair, wherein the transmission mechanism is composed of a main transmission wheel 7, a slave transmission wheel 8 and a transmission medium 9 connecting the two, and the screw nut pair comprises a nut 10 and a screw rod 6 matched with the nut 10, the output shaft 401 of the servo motor 4 being connected with the nut 10 in the screw nut pair via the transmission mechanism, and the screw rod 6 in the screw nut pair being fixed with the plunger fixing frame 3.

[0024] The core improvement of the utility model lies in: servo motor 4 is fixed on the side of support frame 5 away from distribution valve body 1, the output shaft 401 of this servo motor 4 is arranged towards distribution valve body 1, and support frame 5 is provided with interlayer A close to servo motor 4, and the main transmission wheel 7 of transmission mechanism is fixed on output shaft 401 and located in interlayer A.

[0025] Further combining Figure 1 As shown in the embodiment, the support frame 5 comprises first vertical plate 501 and second vertical plate 502 distributed at intervals, wherein the first vertical plate 501 is located between the distribution valve body 1 and the second vertical plate 502, and the interlayer A is formed between the first vertical plate 501 and the second vertical plate 502; and the servo motor 4 is fixed on the second vertical plate 502, and the output shaft 401 thereof passes through the opening provided on the second vertical plate 502 and is fixed with the main transmission wheel 7.

[0026] The screw nut pair in the embodiment further comprises a rotating limiting seat 12 and a rotating sleeve 13 rotatably assembled in the rotating limiting seat 12 via two front and rear bearings 14, the outer periphery of the rotating sleeve 13 is fixed with the inner ring of the slave transmission wheel 8, and the inner ring of the rotating sleeve 13 is fixed with the nut 10, so that the nut 10 can be driven to rotate when the slave transmission wheel 8 rotates, thereby driving the screw rod 6 to extend and retract. The first vertical plate 501 and the second vertical plate 502 are both fixed on the upper part of the rotating limiting seat 12.

[0027] The first vertical plate 501 is provided with an avoiding hole 501a for the output shaft 401 of the servo motor 4 to extend out, and the end of the output shaft 401 is locked and fixed with a counterweight shaft cap 11 by an axial screw, and the counterweight shaft cap 11 is located in the avoiding hole 501a.

[0028] The transmission mechanism in the embodiment is a synchronous belt transmission mechanism, the main transmission wheel 7 is a main synchronous belt wheel, the slave transmission wheel 8 is a slave synchronous belt wheel, and the transmission medium 9 is a belt.

[0029] The improved effects of the utility model have the following three points:

[0030] 1、 the structure design of the utility model, servo motor 4 is fixed on the one side of support frame 5 to distribution valve body 1, namely servo motor 4 is moved away from the position of the original plunger fixed frame 3 top, makes its no longer to the disassembly of plunger 2 causes interference, to bring the convenience to the use and maintenance of drop casting machine.

[0031] 2、 the structure design of the utility model, servo motor 4 output shaft 401 is set to distribution valve body 1 direction, then main transmission wheel 7 is fixed on it, and further in support frame 5 is set to interlayer A to accommodate main transmission wheel 7, prevents main transmission wheel 7 from being exposed to the outside, to effectively avoid the risk that main transmission wheel 7 is touched by staff by mistake, improves equipment use safety.

[0032] 3、 the structure design of the utility model, compared with conventional technology, the fixed position of main transmission wheel 7 on output shaft 401 is closer to servo motor 4, and the position of the original output shaft 401 end is additionally provided with counterweight shaft cap 11, these measures effectively reduce the shaft runout deviation caused by output shaft 401 processing and installation, so that the operation stability of the mechanism of the utility model is better.

[0033] Of course, the above embodiment is only for illustrating the technical concept and characteristics of the utility model, its purpose is to let the person familiar with this technology can understand the content of the utility model and to implement, and it cannot limit the protection scope of the utility model. All the modification according to the spirit and essence of the main technical scheme of the utility model should be covered in the protection scope of the utility model.

Claims

1. A kind of drop irrigation machine's plunger servo drive mechanism, including unit mechanism being arranged symmetrically on both sides of distribution valve body (1), and the unit mechanism on each side includes plunger (2), plunger fixed frame (3) and servo screw mechanism, plunger (2) is located in plunger cavity (101) on both sides of distribution valve body (1), and servo screw mechanism includes servo motor (4), support frame (5), transmission mechanism and screw nut pair, the output shaft (401) of servo motor (4) is connected with the nut (10) in screw nut pair via transmission mechanism, and the screw rod (6) matched with nut (10) in screw nut pair is fixed with plunger fixed frame (3);Its characterized in that The servo motor (4) is fixed on the side of the support frame (5) away from the distribution valve body (1), the output shaft (401) of the servo motor (4) is arranged towards the direction of the distribution valve body (1), and the support frame (5) is provided with a sandwich layer (A) close to the servo motor (4), and the main transmission wheel (7) in the transmission mechanism is fixed on the output shaft (401) and located in the sandwich layer (A).

2. A plunger servo drive mechanism for a drip applicator as defined in claim 1, characterized in that The support frame (5) comprises a first vertical plate (501) and a second vertical plate (502) which are spaced apart, wherein the first vertical plate (501) is located between the distribution valve body (1) and the second vertical plate (502), and the sandwich layer (A) is formed between the first vertical plate (501) and the second vertical plate (502); and the servo motor (4) is fixed on the second vertical plate (502), and the output shaft (401) of the servo motor (4) passes through the opening provided on the second vertical plate (502) and is fixed with the main transmission wheel (7).

3. A plunger servo drive mechanism for a drip applicator as defined in claim 2, wherein The transmission mechanism further comprises a driven transmission wheel (8) and a transmission medium (9) connecting the main transmission wheel (7) and the driven transmission wheel (8), and the screw-nut pair further comprises a rotating limiting seat (12) and a rotating sleeve (13) rotatably assembled in the rotating limiting seat (12) via a plurality of bearings (14), the outer periphery of the rotating sleeve (13) is fixed with the inner ring of the driven transmission wheel (8), and the inner ring of the rotating sleeve (13) is fixed with the nut (10); the first vertical plate (501) and the second vertical plate (502) are both fixed on the upper part of the rotating limiting seat (12).

4. The plunger servo drive mechanism for a drip applicator of claim 2, wherein The first vertical plate (501) is provided with a avoiding hole (501a) for the output shaft (401) of the servo motor (4) to extend out, and the end of the output shaft (401) is fixed with a counterweight shaft cap (11) which is located in the avoiding hole (501a).

5. The plunger servo drive mechanism of a drip applicator of claim 3, wherein The transmission mechanism is a synchronous belt transmission mechanism, the main transmission wheel (7) is a main synchronous belt wheel, the driven transmission wheel (8) is a driven synchronous belt wheel, and the transmission medium (9) is a belt.

6. The plunger servo drive mechanism of a drip applicator of claim 3, wherein The transmission mechanism is a synchronous chain transmission mechanism, the main transmission wheel (7) is a main synchronous chain wheel, the driven transmission wheel (8) is a driven synchronous chain wheel, and the transmission medium (9) is a chain.

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