JP5026813B2 - Fixed amount filling equipment - Google Patents

Description

  The present invention relates to a quantitative filling device, and more particularly to a quantitative filling device having a spool suitable for quantitatively filling a container with a solid-containing liquid without dripping.

  Conventionally, as a device for quantitatively filling a paste-like material or the like, a filling nozzle having a downward discharge port and disposed so that the discharge port is located directly above the container transport path of the container transport conveyor, and the inside of the fill nozzle A sliding piston, an arm having a filling nozzle attached to the lower part thereof, a horizontal axis supporting the upper part of the arm in a reversible manner, and a swinging means for swinging the arm around the horizontal axis. The high-viscosity fluid filling device (for example, see Patent Document 1) characterized in that the filling nozzle and piston are made of ceramic, and the mouthpiece of a single dispenser is replaced with a specially formed distribution member It is possible to use a multi-dispenser connected to the distribution member, through which the various products can be put into a common container in the desired rotational shape in the desired ratio. Filling An apparatus for metering and filling a product from liquid to pasty into a container (see, for example, Patent Document 2) or an apparatus for simultaneously quantifying and filling a large number of liquid or pasty products, including storage containers and many Each of the metering units has one metering chamber and one valve, which alternately connects the metering chamber to which it belongs to the storage container and the outlet, and in this case each In the type in which the valve is placed beside the assigned quantitative chamber, the axis of the valve and the axis of the assigned quantitative chamber intersect each other at a distance from each other. A fixed quantity filling device (see, for example, Patent Document 3) or a servo motor is operated to drive a piston to increase or decrease the volume of the liquid reservoir chamber, thereby allowing viscous fluid to enter or exit the liquid reservoir chamber. With a decrease in In this method, the container is filled with the viscous fluid discharged from the reservoir chamber, and the operation and speed of the reservoir chamber volume is adjusted by adjusting the servo motor operation according to the viscous fluid. When the viscosity of the viscous fluid is relatively low, at least in the initial stage of filling, the volume of the reservoir is relatively slowly decreased to control the discharge speed of the viscous fluid so that the viscosity of the viscous fluid is reduced. When the volume is relatively high, it is possible to perform filling suitable for various viscous fluids by controlling the discharge of the viscous fluid quickly by reducing the volume of the reservoir chamber in a relatively short time. A filling device and a filling method (for example, see Patent Document 4) are known.

In addition, as a quantitative filling device with improved liquid breakage, in a liquid filling device that measures a liquid filling amount by operating a piston in a cylinder, a switching valve that switches the inside of the cylinder to a liquid filling passage or a liquid supply passage; In addition, a liquid drop prevention filling device (see, for example, Patent Document 5), which includes a piston capable of arbitrarily setting an operation timing and a stroke, and a driving means for operating the piston with a set suction stroke after completion of liquid filling, for example, In a fluid food filling apparatus comprising a tank, a cylinder, a filling nozzle, and a switching valve to which these are connected, suck back means for controlling a stop position of the switching valve built in the switching valve in a plurality of stages, and the switching valve A flexible valve body that is deformed when pressed and restored when the pressing is stopped is provided. Also effectively prevents sagging rear a a, structure simple, compact, the filling apparatus of the excellent flow food in terms of safety and hygiene (e.g., see Patent Document 6) have been proposed.
Japanese Patent No. 2614757 Japanese Patent Laid-Open No. 11-115904 JP 54-76384 A JP 2000-168703 A Japanese Patent Laid-Open No. 2-152603 JP 10-338202 A

  When a solid-containing liquid was filled in a fixed amount, a straight-shaped spool was used. However, when the solid matter became large, it was necessary to increase the diameter of the spool. There was a case where the liquid running out after the end deteriorated and problems such as dripping out of the container occurred. The subject of this invention is providing the fixed_quantity | quantitative_filling apparatus which can perform exact fixed_quantity | quantitative_filling with sufficient liquid cutting | disconnection, even when it fills the liquid containing elastic solids, such as pulp and jelly.

  The inventors of the present invention have worked on research to solve the above-mentioned problems, and studied the flow characteristics of the solid-containing liquid in the fixed-quantity filling apparatus using a spool. In order to prevent solids from blocking in the tank and maintain good solid-liquid mixing, and to suck the liquid containing solids into the measuring cylinder due to the negative pressure caused by the movement of the measuring piston, the cross section of the flow path has the maximum solids diameter. Therefore, it is necessary to make the spool thickness corresponding to the size, and on the other hand, in the path from the measuring cylinder to the tip of the nozzle, the liquid containing solid matter is pressed by the movement of the measuring piston. The cross-section of the flow path is possible with the maximum diameter of solids, and the solids are elastic like pulp, jelly, etc. As long as a flow passage has been found that it is possible to less than the maximum diameter of the solid. Therefore, instead of a straight-shaped spool, a spool having a large portion and a small portion is adopted, and the cross-sectional dimension of the spool that slides liquid-tightly in the flow path of the nozzle immediately before the discharge port is reduced (thinned). As a result, it was confirmed that drainage at the end of filling was improved, dripping was prevented, and accurate quantitative filling could be performed, and the present invention was completed.

That is, the present invention includes (1) a filling container tank, a measuring cylinder provided below the filling container tank, having an inflow opening and a sending opening, a measuring piston sliding in the measuring cylinder, and the packing A filling nozzle provided below the storage tank, having a delivery valve port and an inflow valve port, and having a cylindrical hole whose upper end communicates with the inside of the packing material storage tank and whose lower end forms a packing material discharge port; An inflow conduit that communicates the delivery valve port with the inflow opening of the metering cylinder, a delivery conduit that communicates the delivery opening of the metering cylinder and the inflow valve port of the filling nozzle, and a cylindrical hole of the filling nozzle A fixed-quantity filling device comprising a spool having a communication passage through which the inside of the filling material storage tank and the inside of the measuring cylinder can be communicated with each other via the inflow conduit, and the cylindrical hole of the filling nozzle But An upper large cylindrical hole portion formed with a delivery valve port, and a lower small cylindrical hole portion formed with an inflow valve port that is narrower than the upper large cylindrical hole portion. When there is an upper large portion that slides in the large cylindrical hole and a lower small portion that is thinner than the upper large portion that slides in the small cylindrical hole, and the spool is in the upper filling position The delivery nozzle port of the filling nozzle is closed by the large portion of the spool, and the inside of the measuring cylinder and the inside of the small cylindrical hole of the filling nozzle are communicated via the delivery conduit, and the spool is The inflow valve port of the filling nozzle is closed by the small portion of the spool, and the inside of the filling material storage tank and the inside of the measuring cylinder communicate with each other via the communication path and the inflow pipe. is, when the spool is in the filling position of the upper, lower end the inflow of the spool Located in the lower small cylindrical hole portion above the mouth, the upper large portion of the spool has a space below the upper large portion in the cylindrical hole of the filling nozzle and the inside of the filling material storage tank. The present invention relates to a fixed-quantity filling device characterized by having a communication passage that is always in communication .

The present invention is described in (2) fill passage sectional area of the small dimensions cylindrical hole section, above, wherein the smaller than the minimum cross-sectional area filling passage of the communication passage or the inlet conduit (1) A fixed-quantity filling device and (3) a metering cylinder are provided below the bottom of the filling material storage tank so as to communicate with the inside of the filling material storage tank and the inside of the measuring cylinder, and the piston is provided with a piston rod extending upward from the piston. The spool is provided with a spool rod extending upward from the spool, and the piston and the spool are driven by the piston rod and the spool rod penetrating through the filling material storage tank. quantitative filling device or according to (2), (4) the communication passage and the communication passage of the spool, said characterized in that it is a groove formed in the large dimension portion on the spool (1) - (3 ) Quantitative filling device or according to any one of (5) when the spool is in the standby position, the lower end of the spool, characterized in that it is configured to protrude from the discharge port of the filling nozzle above ( The quantitative filling device according to any one of 1) to ( 4 ) and ( 6 ) a small cylindrical hole portion are formed by a hard resin cylinder fixed to the cylindrical hole of the filling nozzle. It relates to the fixed-quantity filling apparatus as described in any one of said (1)-( 5 ) characterized by the above-mentioned.

  According to the quantitative filling device of the present invention, by adopting a spool having a large portion and a small portion, even when filling a liquid containing elastic solids such as pulp and jelly, Accurate quantitative filling without anyone.

  The metering filling device of the present invention includes a filling storage tank, a measuring cylinder provided below the packing storage tank, having an inflow opening and a delivery opening, a measuring piston sliding in the measuring cylinder, and the filling A filling nozzle provided below the material storage tank, having a delivery valve port and an inflow valve port, and having a cylindrical hole whose upper end communicates with the inside of the packing material storage tank and whose lower end forms a product discharge port; and the filling nozzle An inflow conduit that communicates between the delivery valve port of the metering cylinder and the inflow opening of the metering cylinder, a delivery conduit that communicates between the metering cylinder and the inflow valve port of the filling nozzle, and a cylindrical hole of the filling nozzle A metering filling device comprising a spool having a communication passage that slides inside and allows the inside of the filling material storage tank and the inside of the measuring cylinder to communicate with each other via the inflow conduit. The hole has an upper large cylindrical hole portion in which a delivery valve port is formed, and a lower small cylindrical hole portion in which an inflow valve port is formed, which is narrower than the upper large cylindrical hole portion, and the spool Has an upper large portion that slides in the upper large cylindrical hole, and a lower small portion that is thinner than the upper large portion that slides in the small cylindrical hole, and the spool is in the upper filling position. The filling nozzle is closed by the large portion of the spool, and the inside of the measuring cylinder and the small cylindrical hole of the filling nozzle are communicated with each other via the delivery line, When the spool is in the lower standby position, the inflow valve port of the filling nozzle is closed by the small portion of the spool, and the inside of the filling material storage tank and the inside of the measuring cylinder are connected to the communication path and the inflow pipe. If it is the apparatus connected via, it will not restrict | limit especially as a packing, It does not restrict | limit especially Specific examples include liquids containing solids such as jelly, pulp, red beans, and viscous / pasty fluids such as curry roux and yogurt. Among them, liquids containing solids such as jelly, pulp and red beans Can be preferably exemplified.

  One or a plurality of metering piston-cylinders equipped with a metering cylinder and a metering piston and a metering filling device equipped with a filling nozzle and a spool can be arranged in the filling material storage tank. It is preferable to arrange them side by side in terms of production efficiency. The driving source of the metering piston and the spool is not particularly limited, but it is preferable that the metering piston and the spool can be driven at a set timing by synchronizing the driving of the metering piston and the spool. Servo motors are preferred to ensure and adjust the suction force / suction speed of the filling material and the discharge force / discharge speed from the metering cylinder to the filling nozzle, and air for ease of control when driving the spool. A cylinder is preferred. The servo motor and the air cylinder may be controlled individually by separate program control devices, but may also be performed by one program control device.

  The suction pressure that causes the solid-containing liquid to flow into the measuring cylinder from the filling container tank is a maximum of 1 atm when the filling container tank is not pressurized, and the solid pressure in the path from the filling container tank to the measuring cylinder is solid. In order to prevent blocking of objects and maintain good solid-liquid mixing, the cross-sectional area of the flow path is preferably 2 to 5 times the maximum diameter of the solids. Since the extrusion pressure for discharging the solid-containing liquid into the small cylindrical hole portion of the nozzle can be easily set to several atmospheric pressures, the cylindrical space through which the filling of the small cylindrical hole portion of the filling nozzle passes is possible. The cross-sectional dimension is preferably designed to be about the maximum diameter of the solid material or smaller than the maximum diameter of the solid material if the solid material is elastic such as pulp or jelly. Therefore, the filling material in the inflow passage from the filling container tank formed by the large cylindrical hole portion of the filling nozzle and the groove of the large size portion of the spool and the inflow conduit to the measuring cylinder. Of the communication passage formed by the portion where the passage cross-sectional area of the nozzle is minimized, usually the inner peripheral surface (large cylindrical hole) on the delivery valve port side of the filling nozzle and the groove of the large portion of the spool. It is preferable that the passage cross-sectional area is 2 to 5 times wider than the passage cross-sectional area of the filling material in the small cylindrical hole of the filling nozzle.

  The present invention is characterized in that a spool having a large portion and a small portion (stepped spool) is employed, and the stepped spool may have a rectangular cross-sectional shape. A stepped spool in which a circular shape is good, that is, a small diameter portion made of a large diameter 1/3 to 1/4 of a small diameter cylinder is coaxially connected to a lower portion of the large diameter portion is preferable. . Further, when the stepped spool is in the lower limit standby position, it is preferable that the lower end of the stepped spool is configured to be flush with the discharge port of the filling nozzle or slightly protrude from the discharge port. It is more preferable that the solid body protrude slightly from the discharge port in that the solid matter can be completely excised. Further, in the space below the upper large diameter portion of the stepped spool in the cylindrical hole of the filling nozzle, it is preferable to provide a mechanism for canceling the negative pressure or the positive pressure associated with the rising or lowering of the stepped spool. A small hole that communicates with the outside air can be provided in the space, but communication between the inner surface of the cylindrical hole of the filling nozzle opposite to the delivery valve port and the stepped spool communicates with the inside of the filling material storage tank. Forming a passage is preferable in terms of hygiene because it creates a closed space. More specifically, a thick passage provided on one side surface of the large diameter portion of the stepped spool in order to make the inside of the filling container tank and the inside of the measuring cylinder communicate with each other. It is preferable that a narrow groove that is longer and narrower than the groove is formed on the side surface opposite to the groove, and the communication passage is formed by the thin groove and the inner peripheral surface of the cylindrical hole of the filling nozzle.

  The small-diameter cylindrical hole portion may be machined to have a small diameter at the bottom of the cylindrical hole of the stainless steel filling nozzle. However, the lowering speed of the stepped spool is faster than the lowering speed of the measuring piston. Since wear and biting due to friction between stainless steels with the small diameter cylindrical hole portion occur, the small diameter cylindrical hole portion is formed by a hard resin cylinder inserted and fixed to the lower portion of the cylindrical hole of the filling nozzle. Preferably it is. That is, it is preferable to use a nested hard resin cylindrical body in which a small-diameter cylindrical hole portion and an inflow valve port communicating the small-diameter cylindrical hole portion and the delivery pipe line are formed in the center portion. In this case, it is preferable to provide a drop-off prevention mechanism at the lower end of the filling nozzle so that the cylinder does not drop off from the filling nozzle.

  EXAMPLES Hereinafter, although an Example demonstrates this invention more concretely, the technical scope of this invention is not limited to these illustrations.

  FIG. 1 shows an outline of a filling and packaging machine in which the metering filling device of the present invention is provided as a secondary filling device 66. As shown in FIG. 1, the filling and packaging machine includes a bed 61, a container transport conveyor 62 equipped on the bed 61, a container supply device 63 disposed along the transport path, a foreign matter removing device 64, A primary filling device 65, a secondary filling device 66, a tertiary filling device 67, a rewinder 68, a sealing device 69, a trimming device 70, a wind reel 71, and a discharge device 72 are provided.

  As shown in FIG. 2, the container transport conveyor 62 has a configuration in which a large number of holder plates 74 are attached at equal intervals between a pair of endless belts 73. Each holder plate 74 is formed with six openings 75, and the containers C are inserted into the openings 75 one by one, so that the six containers C have the width of the container transport conveyor 62. They are arranged and held in the direction (FIG. 2 shows only one container C). Then, the endless belt 73 is rotated by the drive of a servo motor or the like, so that the containers C held in parallel on the holder plates 74 in this way are transferred from the container supply device 63 to the foreign matter removing device 64, the primary filling device. 65, a secondary filling device 66, a tertiary filling device 67, a rewinder 68, a sealing device 69, a trimming device 70, a wind reel 71, and a discharge device 72 are conveyed intermittently in this order.

  The container supply device 63 includes a stocker that stores a large number of containers C in a state where containers C for filling raw materials such as dessert products are vertically stacked in six rows. The container C has a cup shape with an upper surface opened, and has a shape that can be filled from the opening. The container supply device 63 uses the insertion mechanism arranged in the stocker to store the containers C thus stored in the stocker in six rows in the six openings 75 formed in the holder plate 74 of the container transport conveyor 62. It is supposed to be inserted one by one.

  The filling and packaging in the filling and packaging machine will be described. First, in the container supply device 63 arranged at the start end of the container transport conveyor 62, cup-shaped containers C stored in six rows in the stocker are inserted from below by the insertion mechanism. Each is taken out in order. Then, by inserting these containers C one by one into the six openings 75 formed in the holder plate 74 of the container transport conveyor 62, the six containers C are held side by side by the holder plate 74. It becomes a state. Next, the six containers C thus supplied to the container transport conveyor 62 are transported to the foreign matter removing device 64 by the container transport conveyor 62 that is rotated by the drive of a servo motor or the like. When the six containers C are carried into the position immediately below the six nozzles provided in the primary filling device 65 by the container transport conveyor 62, the drive of the servo motor or the like is stopped and the containers C are temporarily stopped. As a result, the six containers C held side by side by the holder plate 74 are positioned at positions (filling positions) directly below the nozzles of the primary filling device 65, respectively. The raw material a is simultaneously quantitatively filled in each container C that is temporarily stopped at this filling position. Subsequently, the containers are sequentially carried by the container transport conveyor 62 below the secondary filling device 66 and the tertiary filling device 67, and secondary filling and tertiary filling for each of the six containers C are performed. The six containers C thus filled are intermittently conveyed in the order of the rewinder 68, the seal device 69, the trimming device 70, the wind reel 71, and the discharge device 72.

  Next, the fixed-quantity filling apparatus of this invention is demonstrated in detail based on FIGS. FIG. 3 shows a longitudinal sectional view of the constant-quantity filling apparatus of the present invention. FIG. 4 shows an enlarged vertical cross-sectional view of the main part of the fixed-quantity filling device of the present invention (when the stepped spool is in the lower standby position). FIG. 5 is an enlarged vertical cross-sectional view of the main part of the constant-quantity filling apparatus of the present invention ((a) when the stepped spool is in the lower standby position and (b) when the stepped spool is in the upper filling position). It is shown. FIG. 6 shows a cross-sectional view taken along line AA of FIG.

  The fixed-quantity filling device of the present invention is provided so that the inside of the filling storage tank 1 and the inside of the measuring cylinder 2 communicate with each other below the bottom of the filling storage tank 1, and the inflow opening 21 and the delivery opening 22 are provided. A measuring cylinder 2, a measuring piston 3 that slides in the measuring cylinder 2, a lower part of the filling material storage tank 1, a delivery valve port 41, an inflow valve port 42, and an upper end of the filling material storage tank 1, a filling nozzle 4 having a cylindrical hole 44 whose lower end forms a filling material discharge port 43, and an inflow pipe communicating the delivery valve port 41 of the filling nozzle 4 and the inflow opening 21 of the measuring cylinder 2. The inflow pipe 24 is slid in the pipe 23, the inflow pipe 24 communicating with the outflow opening 22 of the metering cylinder 2 and the inflow valve port 42 of the filling nozzle 4, and the cylindrical hole 44 of the filling nozzle 4. Via road 23 And a spool 5 which has a communication passage 51 which can communicates the filler accommodating tank and the metering cylinder 2 1 Te.

  The cylindrical hole 44 of the filling nozzle 4 includes an upper large-diameter cylindrical hole portion 44a in which the delivery valve port 41 is formed, and a lower small-diameter tube narrower than the upper large-diameter cylindrical hole portion 44a in which the inflow valve port 42 is formed. And a hole 44b. The spool 5 has an upper large diameter portion 5a that slides in the upper large diameter cylindrical hole portion 44a, and a lower small diameter portion 5b that is narrower than the upper large diameter portion 5a that slides in the small diameter cylindrical hole portion 44b. Yes. When the spool 5 is in the upper filling position (FIG. 5B), the delivery valve port 41 of the filling nozzle 4 is closed by the large diameter portion 5a of the spool 5, and the inside of the measuring cylinder 2 and the small diameter cylinder of the filling nozzle 4 are closed. The inside of the hole 44b is communicated with the delivery pipe line 24. When the spool 5 is in the lower standby position (FIG. 5 (a)), the inflow valve port 42 of the filling nozzle 4 is closed by the small diameter portion 5b of the spool 5, and the inside of the filling material storage tank 1 and the inside of the measuring cylinder 2 are closed. The communication passage 51 and the inflow conduit 23 communicate with each other. The filling passage cross-sectional area of the small-diameter cylindrical hole 44b is formed smaller than the filling passage cross-sectional area of the narrowest portion of the communication passage 51 or the inflow conduit 23 through which the filling passes. In the upper large-diameter portion 5a of the spool, a communication passage 52 that always communicates the space 46 below the upper large-diameter portion 44a in the cylindrical hole 44 of the filling nozzle 4 and the inside of the filling material storage tank 1 is formed.

  The communication passage 51 is formed by a thick groove 57 formed in the vertical direction on the peripheral surface of the upper large diameter portion 5 a of the spool 5 so as to face the delivery valve port 41. The communication passage 52 is formed by a narrow groove 58 formed in the up and down direction on the peripheral surface opposite to the thick groove 57 of the upper large diameter portion 5 a of the spool 5.

  Six metering piston-cylinders are arranged in parallel in the filling material storage tank 1. Each metering piston-cylinder includes a metering cylinder 2 provided in communication with a lower portion of the bottom of the packing container tank 1, a metering piston 3 that slides liquid-tightly inside the metering cylinder 2, and a packing container tank 1. The piston guide cylinder 32 is fixed upward. Each measuring cylinder 2 is provided with an inflow opening 21 on its side peripheral surface and a delivery opening 22 at its bottom. Each measuring piston 3 includes a lower piston head 33 and an upper piston rod 31, and the piston head 33 is configured to slide inside the measuring cylinder 2 in a liquid-tight manner. One arm 34 of the toggle lever pair is connected to the upper end of the piston rod 31, and the other arm 35 is attached to the drive shaft 36. The drive shaft 36 is connected to a servo motor coupled to the program control device via a transmission device (not shown). The metering piston 3 moves up and down at the set timing by the controlled forward / reverse rotation drive of the servo motor.

  In addition, six filling nozzles 4 are arranged in parallel in the filling material storage tank 1. Inside the filling nozzle 4, a cylindrical hole 44 is formed which communicates with the inside of the filling material storage tank 1 and below the bottom thereof. The cylindrical hole 44 includes a large-diameter cylindrical hole portion 44a in which an upper delivery valve port 41 is formed and a small-diameter cylindrical hole portion 44b in which a lower inflow valve port 42 is formed. A spool 5 is provided in the cylindrical hole 44 so as to be slidable in the cylindrical hole 44. The spool 5 is provided with a spool rod 53 that extends upward from the spool 5, and the spool rod 53 is connected to the filler storage tank 1 via a spool guide cylinder 54 that is fixed above the filler storage tank 1. It extends to the upper part. The spool 5 includes an upper large-diameter portion 5a (φ27 mm) that slides in the large-diameter cylindrical hole portion 44a in the filling nozzle 4 and a lower portion that slides liquid-tightly in the small-diameter cylindrical hole portion 44b. The large-diameter portion 5b (φ8mm) is composed of a large groove 57 of a predetermined length on one side of the large-diameter portion 5a on the measuring piston-cylinder side, and on one side of the opposite side below the thick groove 57. A long narrow groove 58 is formed. The upper end of the spool rod 53 is connected to a cylinder rod 56 extending downward from the air cylinder 55. The air cylinder 55 is controlled to advance and retreat by a program control device (not shown). Due to the controlled forward / backward drive of the air cylinder 55, the spool rod 53 slides in the spool guide tube 54 and smoothly moves up and down at the timing when the stepped spool 5 is set.

  Between the narrow groove 58 of the large diameter portion 5a of the stepped spool 5 and the inner peripheral surface of the large diameter cylindrical hole portion 44a, a space below the large diameter portion 5a in the large diameter cylindrical hole portion 44a is filled. A communication passage 52 communicating with the inside of the article storage tank 1 is formed, and the negative pressure accompanying the rise of the stepped spool 5 can be eliminated. The small-diameter cylindrical hole 44b is formed of a nested hard resin cylinder 45 in which an inflow valve port 42 that communicates the small-diameter cylindrical hole 44b and the measuring cylinder 2 is formed. A dropping prevention mechanism is provided at the lower end of the filling nozzle 4 so that the telescopic cylinder 45 made of the hard resin does not drop.

  Next, the filling operation in the quantitative filling device of the present invention will be described. As shown in FIGS. 4 and 5A, when the stepped spool 5 is in the lower standby position, the small-diameter cylindrical hole 44b of the filling nozzle 4 is replaced with the small-diameter portion of the stepped spool 5. The inside of the filling material storage tank 1 and the inside of the measuring cylinder 2 are in communication with each other through the cylindrical hole 44 of the filling nozzle 4, the thick groove 57 of the stepped spool 5 large diameter portion 5 a, and the inflow conduit 23. Then, the measuring piston 3 in the measuring cylinder 2 rises (retreats) by the drive of the servo motor, the inside of the measuring cylinder 2 becomes negative pressure, and the solid-containing liquid is sucked into the measuring cylinder 2 and flows. In the inflow passage from the filling container tank 1 to the measuring cylinder 2 formed from the cylindrical hole 44 of the filling nozzle 4, the thick groove 57 of the large diameter portion 5 a of the stepped spool 5, and the inflow conduit 23. The minimum cross-sectional area is designed to be considerably larger (approximately 3.5 times) than the maximum diameter of the solid material, so there is no blocking by the solid material in the inflow passage, and the solid-containing liquid is in a solid-liquid mixed state. Into the measuring cylinder 2.

  When the measuring piston 3 rises (retreats) and reaches the upper limit position while sucking the solid-containing liquid, the stepped spool 5 rises (retreats) by driving the air cylinder 55, and the large diameter portion of the stepped spool 5 The outer peripheral surface where the thick groove 57 of 5a is not formed closes the delivery valve port 41 of the filling nozzle 4, the communication state between the filling material storage tank 1 and the measuring cylinder 2 is blocked, and the stepped spool 5 The small diameter portion 5b also rises along the small diameter cylindrical hole portion 44b of the filling nozzle 4. As the stepped spool 5 rises, a negative pressure is temporarily generated in the lower space 46 in the cylindrical hole 44, but the inner peripheral surface of the cylindrical hole 44 and the narrow groove of the large diameter portion 5a of the stepped spool 5 58 is formed with a communication passage 52 communicating with the inside of the filling material storage tank 1 and the lower space 46, and the liquid in the filling material storage tank 1 passes through the communication passage 52 in the cylindrical hole 44. The negative pressure accompanying the rise of the stepped spool 5 is eliminated. When the stepped spool 5 rises (retreats) and reaches the upper filling position, the small diameter portion 5b of the stepped spool 5 rising while sliding in the small diameter cylindrical hole portion 44b of the filling nozzle 4 is reached. Is located in the small-diameter cylindrical hole 44b above the inflow valve port 42 of the filling nozzle 4, and as a result, the delivery opening 22, the delivery line 24 of the measuring cylinder 2, and the inflow valve port 42 of the filling nozzle 4. The tip of the small diameter cylindrical hole 44b of the metering cylinder 2 and the filling nozzle 4 are in communication with each other.

  When the measuring piston 3 descends (advances) as shown in FIG. 5B in a state where the inside of the measuring cylinder 2 and the small-diameter cylindrical hole 44b of the filling nozzle 4 communicate with each other, the solid-containing liquid in the measuring cylinder 2 Is sent to the filling nozzle 4 and filling into the container C is started from the discharge port 43 at the tip of the filling nozzle 4. The cross-sectional size of the delivery pipe 24, the inflow valve port 42 of the filling nozzle 4 and the small-diameter cylindrical hole 44b is about the maximum diameter of solid matter, or the solid matter is elastic such as flesh and jelly If so, it is designed to be smaller than the maximum diameter of the solid. When the metering piston 3 that has been lowered (advanced) reaches the lower limit position, the stepped spool 5 descends to forcibly push out the solid-containing liquid in the small-diameter cylindrical hole 44b of the filling nozzle 4, and the stepped spool 5 The lower end of the small diameter portion of the filling nozzle 4 is lowered to a position slightly protruding from the discharge port 43 (downward standby position), and the solid matter adhering to the discharge port 43 of the filling nozzle 4 is cut off to prevent the liquid from leaking. One cycle of filling ends.

  Since the above operation is performed in one cycle and six containers are filled in a constant amount of 2.2 to 2.4 seconds / cycle, the fixed amount filling apparatus of the present invention has a filling capacity of about 10,000 pieces per hour. Have.

It is the schematic of the filling packaging machine with which the fixed volume filling apparatus of this invention is provided as a secondary filling apparatus. It is the perspective view which expanded and showed a part of conveyor in FIG. It is a longitudinal cross-sectional view of the fixed quantity filling apparatus of this invention. It is a principal part expanded longitudinal cross-sectional view (the stepped spool 5 is a minimum position) of the fixed quantity filling apparatus of this invention. It is a principal part expanded longitudinal cross-sectional view (when (a) a stepped spool is in a lower stand-by position, (b) when a stepped spool is in an upper filling position) of the fixed-quantity filling apparatus of this invention. It is a cross-sectional view in AA of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Filling storage tank 2 Measuring cylinder 3 Measuring piston 4 Filling nozzle 5 Spool 5a Large diameter (large size) part 5b Small diameter (small size) part 21 Inflow opening 22 Outlet opening 23 Inflow line 24 Outlet line 31 Piston rod 32 Piston Guide cylinder 33 Piston head 34 Arm 35 Arm 36 Drive shaft 41 Delivery valve port 42 Inlet valve port 43 Discharge port 44 Cylindrical hole 44a Large diameter (large) cylindrical hole 44b Small diameter (small) cylindrical hole 45 Cylinder Body 46 Lower space 51 Communication path 52 Communication path 53 Spool rod 54 Spool guide cylinder 55 Air cylinder 56 Cylinder rod 57 Thick groove 58 Narrow groove 61 Bed 62 Container transport conveyor 63 Container supply device 64 Foreign material removal device 65 Primary filling device 66 Secondary Filling device 67 Tertiary filling device 68 Rewinder 69 Sealing device 70 Tri Ming device 71 wind reel 72 discharge device 73 endless belt 74 holder plate 75 opening C container

Claims (6)

A filling storage tank, a measuring cylinder provided below the filling storage tank and having an inflow opening and a delivery opening, a measuring piston sliding inside the measuring cylinder, and provided below the filling storage tank for delivery A filling nozzle having a valve opening and an inflow valve opening and having a cylindrical hole whose upper end communicates with the inside of the filling container tank and whose lower end forms a filling discharge port; a delivery valve port of the filling nozzle; and a metering cylinder An inflow conduit that communicates with the inflow opening; a delivery conduit that communicates between the delivery opening of the metering cylinder and the inflow valve opening of the filling nozzle; A fixed-quantity filling device comprising a spool having a communication path capable of communicating between the inside of the filling material storage tank and the inside of the measuring cylinder via a passage;
The cylindrical hole of the filling nozzle includes an upper large cylindrical hole portion in which a delivery valve port is formed, and a lower small cylindrical hole portion that is narrower than the upper large cylindrical hole portion in which an inflow valve port is formed. Have
The spool has an upper large portion that slides within the upper large cylindrical hole, and a lower small portion that is thinner than the upper large portion that slides within the small cylindrical hole,
When the spool is in the upper filling position, the delivery valve port of the filling nozzle is closed by the large portion of the spool, and the inside of the measuring cylinder and the inside of the small cylindrical hole of the filling nozzle are the delivery pipe line. Communicated through
When the spool is in the lower standby position, the inflow valve port of the filling nozzle is closed by the small portion of the spool, and the communication passage and the inflow pipe line are formed in the filling material storage tank and the measuring cylinder. It communicates via a
When the spool is in the upper filling position, the lower end of the spool is located in the lower small cylindrical hole portion above the inlet valve port,
The upper large portion of the spool has a communication passage that always communicates with the space below the upper large portion in the cylindrical hole of the filling nozzle and the inside of the filling material storage tank. Filling equipment. 2. The quantitative filling device according to claim 1 , wherein a cross-sectional area through which the small-sized cylindrical hole passes is smaller than a minimum cross-sectional area through which the communication passage or the inflow pipe passes. A measuring cylinder is provided below the bottom of the packing container tank so as to communicate between the packing container tank and the measuring cylinder. The piston is provided with a piston rod extending upward from the piston. spool rod extending upward is provided, the piston and spool, quantitative filling device according to claim 1 or 2, characterized in that it is driven by the piston rod and the spool rod extending through the packing accommodating tank. The fixed-quantity filling device according to any one of claims 1 to 3, wherein the communication path and the communication path of the spool are grooves formed in an upper large portion of the spool. The quantitative filling device according to any one of claims 1 to 4, wherein when the spool is in a standby position, the lower end of the spool is configured to protrude from the discharge port of the filling nozzle. The quantitative filling device according to any one of claims 1 to 5, wherein the small cylindrical hole is formed of a hard resin cylinder fixed to the cylindrical hole of the filling nozzle.

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