JPS62210940A - Meat and bone separating filter and its production - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Technical field The present invention relates to a meat and bone separation filter and a method for manufacturing the same.
In particular, it is possible to easily and reliably remove small bones and sinews from beef and pork that contain a lot of oil and fat, and it can be kept extremely clean from a hygienic point of view, and is extremely durable. The present invention relates to a meat and bone separation filter and a method for manufacturing the same.

Prior Art Conventionally, since the edible meat or liquid from around and inside the bones of livestock is produced by crushing the bones, it contains many small bones, and the greater the amount of these small bones, the lower the quality. It was considered low-grade, and its price had to be low. This is due to the fact that if a large amount of ossicles with a particle size of 0.5 or more are used in meat products such as hams and sausages, the texture of the tongue and teeth will be affected when the meat product is eaten. This is because the texture becomes unpleasant and it is difficult to obtain good evaluations from consumers. However, the reality is that this measure is delicious because it contains bone marrow fluid, etc., and is also inexpensive, so meat product manufacturers want to use it in as large a quantity as possible.

Therefore, filters and devices for separating small bones of a certain size or more from beef cattle have been proposed in the past.
An example of a filter that has been put into practical use is only for treating meat with a low fat content such as chicken meat, but it has been put into practical use for treating beef and pork with a high fat content. There are none. In other words, conventional bone and bone separation filters for treatment use a plurality of plate members stacked together to form a gap between each plate member to the extent that small bones with a particle size of a certain value or more cannot pass through. It was an attempt to separate and remove the For this reason, there are microscopic gaps between each plate member where there would normally be no gaps, and meat juices enter these spaces due to capillary action, leading to spoilage, and this meat juice oxidizes and is filtered. This method had drawbacks such as deterioration of the taste of the meat, and could not be used for beef and pork that had a high oil and fat content.

Therefore, conventionally, for example, the particle size was 0.5, which caused a feeling of discomfort while eating.
It is unavoidable that ossicles larger than m are mixed in during the procedure,
As a result, the amount of equipment used must be considerably reduced, resulting in a drawback that the price of the device becomes high, that is, the commercial value of the device cannot be increased.

Purpose The present invention has been made in order to eliminate the drawbacks of the prior art described above, and its purpose is to provide a meat and bone separation filter using an integrated metal with high corrosion resistance, such as 18-8
By constructing it with stainless steel, it can be put to practical use in treating beef and pork with a high fat content.
This will also greatly improve the quality of beef and pork products, allowing them to be sold at higher prices. Another purpose is that by constructing the filter in one piece, there are no gaps other than the slits for removing small bones, which completely prevents oxidation and putrefaction due to the infiltration of meat juices, making it extremely sanitary and safe. This is to prevent the taste of the measures from deteriorating. Still another object is to minimize the thickness of the thick part where the slit is formed by using the inner groove and the outer groove.
The purpose is to prevent the material passing through the slit from being oxidized by frictional heat. Another purpose is to make it possible to completely remove small bones with a grain size of 0.5 mm or more by reducing the width of the slit to 0.5 mm or less. The goal is to ensure that measures are taken. Still another object is to make it possible to make slits with a width of 0.5 mm or less in 18-8 stainless steel, which has poor machinability, without damaging the cutting tool, by machining the slits by electrical discharge machining or laser beam machining. It is to be. Another purpose is that when processing the slit, by leaving struts at multiple locations to maintain strength, the struts are formed at the same time as the slit is completed, eliminating the need for additional processing such as welding. The object of the present invention is to obtain a meat and bone separation filter having sufficient strength to withstand strong hydraulic pressure. Still another object is to facilitate the attachment and detachment of the filter to and from the meat and bone separation device by forming flanges at both ends of the filter, thereby facilitating the removal of small bones and the cleaning of the filter.

Configuration In short, the present invention (specified invention) is basically constructed of a metal with high corrosion resistance in one piece in a cylindrical shape, and has a large number of V-shaped inner grooves in the circumferential direction from the inner peripheral surface to the outer peripheral surface of the cylinder. At the same time, a large number of V-shaped circumferential outer grooves are formed from the outer circumferential surface of the cylinder toward the inner circumferential surface at the same position as the inner groove and facing the inner groove; A slit having a width such that small bones of beef cattle cannot pass through is formed in the thick part between the trough and the valley part of the outer groove, and the slits are formed in a plurality of places in the circumferential direction of the thick part. The first feature is that a support section is provided to maintain strength.

In addition, the method of the present invention (second invention) includes forming a large number of V-shaped circumferential inner grooves toward the outer circumferential surface on the inner circumferential surface of a one-piece metal cylinder with high corrosion resistance, and A plurality of V-shaped circumferential outer grooves are formed on the outer circumferential surface of the inner circumferential surface at the same position as the inner groove and facing the inner groove, and a predetermined groove is formed between the valleys of the two grooves. It is formed by cutting so that a thick part remains, and then slits with a width that does not allow the small bones of beef cattle to pass through are formed in the thick part by special processing in most parts of the circumference. The present invention is characterized in that struts for maintaining strength are formed at a plurality of locations in the circumferential direction of the thick portion where the slits are not formed, at the same time as the slits are formed.

The present invention will be explained below based on a vertical embodiment shown in the drawings. As shown in FIGS. 1 and 2, the meat and bone separation device 1 includes:
Meat and bone separation filter 2, lid member 3, opening/closing device 4, support device 5, storage device 6, meat removal chute 8, meat compression piston 9, guide cylinder 10, and an example of a hydraulic drive device The meat pressing piston 9 is provided with a piston flange 12 and at least two long ports 1-13.

As shown in FIGS. 5 to 11, the meat and bone separation filter 2 is basically made of an integral cylindrical metal with high corrosion resistance, such as 18-8 stainless steel.
A large number of V-shaped inner circumferential grooves 2d are formed from the inner circumferential surface 2b of the cylinder 2a toward the outer circumferential surface 2C, and a large number of V-shaped circles are formed from the outer circumferential surface 2C of the cylinder 2a toward the inner circumferential surface 2b. The outer groove 2e in the circumferential direction is located at the same position as the inner groove 2d.
The valley part 2 of the inner groove 2d and the outer groove 2e is formed to face the inner groove 2d and the outer groove 2e.
A slit 2i having a width such that the small bones 16 in the measure 15, which is an example of meat, cannot pass through is formed in the thick part 2h between f and 2g in the circumferential direction, and at a plurality of places in the circumferential direction of the thick part 2h. No sulin l-2i is formed, and a strut portion 2j is provided to maintain strength.

As a metal with high corrosion resistance, the above-mentioned 18-8 stainless steel is the most practical in terms of its corrosion resistance and strength, but this is not limited to 18-8 stainless steel, and other metals with high corrosion resistance, For example, it is also possible to use a titanium alloy. The width of the slit 21 is preferably 0.5 mm or less in order to remove small bones 16 with a grain size of 0.51 or more from the surimi 15. For example, the width of the slit 21 is 0.41 or 0.3 fin. It is necessary to form. Further, it is desirable that the thickness t of the thick portion 2h be as small as possible, but if it is made too small, the strength of the support portion 2j will be reduced, so it is desirable to set it to about 1.5 degrees, for example. The larger the thickness of the thick part 2h, the more the surimi 1 is squeezed out through the slit 21.
This is because the frictional heat of No. 5 becomes high, and this frictional heat makes the sliding body more likely to oxidize. In addition, the inner groove 2d is
This is to make it easier to enter the slit 21,
This angle θ1 is set to approximately 90'. Also, the outer groove 2e
is cut from the outer peripheral surface 2c of the cylinder 2a, and the thick part 2
This is to make the thickness t of h as small as possible, and the angle θ2 is set to about 60@.

As shown in FIG. 5, the struts 2j are formed, for example, at four locations at equal intervals in the circumferential direction of the cylinder 2a, and are configured to provide strength to the flesh and bone separation filter 2. The slit 21 is not formed here, but only an inner groove 2d and an outer groove 2e are formed. Therefore, as shown in FIG. 1θ, the thickness t of the thick portion 2h is formed to have a central angle α of approximately 11°30' and a length of approximately 36 mm. Flange portions 2k and 21 are formed at the upper and lower ends of the cylinder 2a, respectively, and the flange portions are formed to have a larger diameter than the cylinder 2a.

For example, in this flange part 2, the outer diameter of 2N is set to 205 mm, the outer diameter of the cylinder 2a is set to 1901 mm, and the inner diameter is set to 1.
The length of the meat and bone separation filter 2 is 280 dragons.
The height of 2/2 on the flange portion 2 is set to 20 mm. The capacity of the meat and bone separation filter 2 having such dimensions is in the range of approximately 2 liters to 5 liters in terms of measure 15. The upper end of the flange part 2 and the lower end of the flange part 21 are chamfered at an angle of approximately 15" by 2 m as shown in FIG.
, 2n are formed, respectively.

Next, a method for manufacturing the meat and bone separation filter 2 will be explained. To explain the manufacturing method using the above-mentioned 18-8 stainless steel, which is a metal with high corrosion resistance, this stainless steel has extremely poor machinability (although the difference in hardness itself is not very high, it is difficult to cut). It is a well-known fact that steel is very sticky and cutting is extremely difficult.

Therefore, it is almost impossible to cut two slits each having a width of 0.5 w or less, which is required in the present invention, into the thick wall portion 2h using an ordinary cutting tool. Therefore, in the manufacturing method according to the present invention, a stainless steel material (not shown) is finished on the flange portion 2 to the outer diameter dimension of 21 and the inner diameter dimension that will become the inner circumferential surface 2b, and then the flange portion 2 is , 21 are left, and the portion of the cylinder 2a is cut to have a smaller diameter than the flange portion to form a stepped cylinder. So first, cylinder 2
A large number of V-shaped inner circumferential grooves 2d are formed by cutting on the inner circumferential surface 2b of the cylinder 2a toward the outer circumferential surface 2C. V
The outer groove 2e in the circumferential direction of the letter shape is arranged so as to face the inner groove 2d at the same position as the inner groove 2d, and to have a predetermined thickness t between the troughs 2f and 2g of both grooves 2d and 2e. It is formed by cutting so that the portion 2h remains. The inner groove 2d is lathed using a cutting tool (not shown) with a tip angle of about 90°, and the outer groove 2e is lathed using a cutting tool (not shown) with a tip angle of about 60°. After completing the machining of a large number of V-shaped inner grooves 2d and outer grooves 2e in this way, next, slits with a width such that the small bones 16 in the measure 15 cannot pass through, for example, 0.5n or less, are formed in the thick wall portion 2h. 2i is formed in most of the circumferential area (the area outside the rectangle indicated by the imaginary line in FIG. 10) by special processing. In this case, regarding the strut portion 2j, in order to maintain strength, the strut portion 2j has slits at multiple locations in the circumferential direction of the thick wall portion 2h where the slit 21 is not formed due to no special processing of the slit 21. It is formed simultaneously with the processing of 21. Therefore, after the slit 2i is formed, there is no need for a step of fixing a support column (not shown) as a separate member for maintaining strength by welding or the like.

As mentioned above, in this special machining, when a normal cutting tool such as a carbide cutting tool or a diamond cutter is used, even a small amount of machining causes the slit 21 to bite and be destroyed immediately. It is impossible to cut such a narrow slit 21 with the ordinary cutting tool. Therefore, in the manufacturing method according to the present invention, this slit 21 is formed to a thickness of, for example, 0.5 mm by electric discharge machining.
It is formed to have a thickness of 0.4 w or 0.3 mm. Another method, as shown in FIG. 6, is to use a three-dimensional laser beam machine to process such a narrow slit 21 with a laser beam 18. The width of the slit 21 is 0.5 as in the electrical discharge machining described above.
It is possible to process it arbitrarily to a value of mm, 0.4 w or 0.3 yen. In addition, when using electric discharge machining, it takes a very large number of man-hours to manufacture and set the electrodes, and the fifth
Although an extremely large number of man-hours are required to complete the meat and bone separation filter 2 as shown in the figure, it is possible to achieve this with fewer man-hours when using a three-dimensional laser processing machine than when using electrical discharge machining. It is possible. In either case, when machining the slits 21, the strut portions 2j are not processed, so the formation of the strut portions 2j is completed at the same time as the machining of the slits 21 is completed, and the slits 2i
The troughs 2f and 2g of the inner groove 2d and the outer groove 2e are processed to remove burrs, for example, by shot blasting or barrel polishing, and are completely finished, resulting in the flesh and bone separation filter 2 shown in FIG. Completed as follows.

Inner peripheral surface 2 of the flesh and bone separation filter 2 completed in this way
b is very smooth, and the meat pressing piston 9 can smoothly reciprocate up and down along this inner circumferential surface 2b.

Next, each component of the vertical meat and bone separation device l will be explained. The peripheral surface 2b is sealed,
It is configured to be detachable from the meat and bone separation filter 2. A main body 3b having a diameter slightly smaller than the diameter of the flange portion 21 of the meat and bone separation filter 2 is formed below the pedestal 3a, and an O-ring 19 for sealing is provided in the middle of the main body. The main body 3b is fitted into the hole 20a formed in the guide plate 20 of the accommodation device 6 without any gaps, and the O-ring 19 is pressed against the lower surface 2Qb of the guide plate 20, and the Teflon seal member 7 is closed. Coupled with this action, the lower end of the meat and bone separation filter 2 is configured to be sealed. An arm member 21 is fixed to the lower surface of the main body 3b, and the arm member 21 is connected to the opening/closing device 4.

The opening/closing device 4 is configured to move the lid member 3 up and down, and is composed of, for example, a hydraulic cylinder 22 and its piston rod 23, and an arm member 21 is connected to one end of the piston rod 23. and hydraulic cylinder 22
is fixed to the base 24 via a bracket 25,
It is connected to a hydraulic pressure generator (not shown).

The support device 5 mechanically supports the lid member 3 from below and is designed to withstand the squeezing force of the meat squeezing piston 9, and the base end 26a of the hydraulic cylinder 26 is connected to the bracket 2.
A crank 30 is connected to one end of the piston rod 29, and the crank is rotatably supported on a bearing 31 fixed to the base 24. It is fixed to the rotating shaft 32, and a lock lever is attached to the rotating shaft.
33 is fixed, and a roller 34 is rotatably attached to the tip 33a of the lock lever.
As is clear from FIG. 3, a pair of these are provided, and the lid member 3 is pressed upward by pressing the lower surface 3C of the lid member 3 from below and pressing the O-ring 19 against the lower surface 20b of the guide plate 20. and the guide plate 20.

Further, a bracket 35 is fixed to the base 24, a stopper screw 36 is screwed onto the bracket, and a locker 38 is screwed onto the stopper screw 36, so that the stopping position of the crank 30 can be adjusted. ing. That is, when the one end 30a of the crank 30 comes into contact with the stopper screw 36, the lock lever is locked during the squeezing operation of the device 15.
33 is maintained in a vertical position.

The storage device 6 stores the meat and bone separation filter 2 in a fixed position,
The guide plate 20 is fixed to the base 24, the guide plate 38 is similarly fixed to the base 24, and the guide plate 20 and the guide plate 38 are fixed to the base 24. shows the flange portion 2β of the meat and bone separation filter 2.

Guide grooves 20c and 3sc are formed in which guide grooves 20c and 3sc are formed so that guide grooves 2k and 3sc can be slidably reciprocated without any gaps, and the innermost part 20
d, 38d are each flange portion 2f of the meat and bone separation filter 2,
2, and by pressing each flange portion 21.2k against the innermost portions 20d and 38d, the meat and bone separation filter 2 is positioned in the front-back direction, and the guide groove 20c, The structure is such that the width of 38c determines the position of the meat and bone separation filter 2 in the lateral direction. Further, the guide plate 38 is formed with a hole 38a into which the guide cylinder 10 is inserted.

The meat removal chute 8 is formed to cover the periphery of the meat and bone separation filter 2 so as to receive the device 15 squeezed out from the meat and bone separation filter 2 in the storage device 6 and send it out to the outside. A space 40 through which the device can pass is also formed at the rear of the bone separation filter 2, from which the device 15 is pushed out to the front and sent to the meat removal port 8a, for example, continuously on a conveyor device (not shown). The device is configured to be delivered automatically.

The meat compression piston 9 is slidably fitted into the meat and bone separation filter 2 to compress the device 15 inserted into the meat and bone separation filter, and has an end member at its lower end. 40 is screwed onto the end member, and a male threaded portion 41a of a piston rod 41 of a hydraulic cylinder 11 whose upper end (not shown) is swingably pivotally connected to the base 24 is screwed onto the end member. The male threaded portion 41a is fixed, and the piston 43 fixed to the upper end of the piston rod 41 is moved up and down by hydraulic pressure, so that it reciprocates in the up and down direction via the end member 40. Also, the end member 4
0 is formed with a water flow hole 40a through which water injected from above during cleaning can flow out, and at least two long bolts 13 are screwed with their male threaded portions 13a so as to close the water flow hole. By this, the piston flange 12 is removably fixed to the end member 40, and by rotating the hexagonal head 13c formed at the upper end 13b of the long bolt 13 with a tool, the piston flange 12 becomes a meat squeezing piston. It is configured so that it can be removed from 9.

Further, the meat pressing piston 9 is formed hollow and has an upper end 9.
a is open, and a hydraulic cylinder 11 is installed in the hollow part 9b.
is arranged so that even if oil leakage or the like occurs in the hydraulic cylinder, the harmful effects will not reach the inside of the meat and bone separation filter 2 at all. Also, the upper end 9 of the meat squeezing piston 9
A top dead center detection sensor 44 for detecting the top dead center of the meat squeezing piston 9 during normal operation is installed near a, and the top dead center detection sensor 44 is composed of a limit switch, and the base 24, and its actuator 44a
is pressed by the upper end 9a of the meat pressing piston 9, the lifting operation of the hydraulic cylinder 11 is stopped, and the meat pressing piston 9
is set to stop at top dead center.

Also, the piston 43 of the hydraulic cylinder 11 has a seal member 45.
and is fixed to the piston rod 41 with a nut 46. An oil pipe 37 is connected to the lower end 11a of the hydraulic cylinder 11, and when pressure oil is supplied from the oil pipe, the piston 43 rises and the piston 4
3 is configured to descend when pressurized oil is supplied to another oil pipe (not shown) above the pipe.

The guide cylinder IO is disposed above and close to the meat and bone separation filter 2, and is designed to guide the meat compression piston 9 to the meat and bone separation filter 2, and its surface is coated with Teflon. The processing is performed so that the meat squeezing piston 9 is smoothly guided, and a guide cylinder 10a is formed on the front surface, and the guide cylinder 10 is connected to a guide cylinder holder 48 fixed to the base 24. The flange tab formed at the upper end of the guide cylinder holder 48 is positioned by abutting against the upper end 48b of the guide cylinder holder 48.

Further, in FIG. 3, a positioning plate 45 is attached to the guide plate 38 of the storage device 6 by a pin 46 so as to be openable and closable, and a tightening knob 47 is attached to one end 45a of the positioning plate 45, passing through the positioning plate 45. A threaded portion (not shown) is screwed onto the guide plate 38, and the positioning plate 45 positions the flange portion 2 in the front-rear direction during use of the meat and bone separation filter 2. By loosening the tightening knob 47, The positioning plate 45 is opened forward and the meat and bone separation filter 2 can be pulled out forward from the storage device 6.

In addition, in the device of the present invention, the meat squeezing piston 9 is replaced with the hydraulic cylinder J when cleaning the guide cylinder 10 and the like.
1 by operating the piston 43 in a different manner from normal operation.
The meat squeezing piston 9 can be moved to a position further above the normal top dead center.
As shown by the imaginary line in Fig. 2, it is possible to rise until its lower end comes off from the guide cylinder lO, and when the meat squeezing piston 9 rises beyond the normal top dead center in this way A pair of open/close semicircular open/close piston guides 50 for guiding the intranuclear compression piston to the guide cylinder 10 again are provided. The open/close type piston guides 50 are rotatably connected to pivot shafts 51 by hinges 50a, and the pivot shafts 51 are fixed to the guide cylinder holder 48.

When the meat squeezing piston 9 is pulled up higher than the guide cylinder 10, the tightening knob 52 attached to one of the opening/closing piston guides 50 is moved to the bracket 5.
By removing the piston guides 50 from the female threaded holes 53a of No. 3, the pair of open/close type piston guides 50 can be opened as shown in FIG. 4 for cleaning work.

A control panel 55 is attached to the base 24, and the hydraulic cylinder 1 can be controlled by controlling each operation button 56.
1. The hydraulic cylinder 22, the hydraulic cylinder 26, etc. can be controlled manually or automatically. [&55 is electrically connected to a hydraulic pressure generator or the like.

Function The present invention is constructed as described above, and its function will be explained below. First, the normal squeezing operation of the measure 15, that is, the operation of separating and removing the small bone 16 from the measure 15, will be explained. As shown in FIG. The lid member 3 is raised via the member 21, the O-ring 19 is pressed against the lower surface 20b of the lower guide plate 20, and the support device 5
The hydraulic cylinder 26 operates to the left in the figure, the piston rod 29 presses the crank 30 to the left, and the lock lever 33 is in the vertical position, and the roller 34 strongly supports the lid member 3 from below. In this state, the lower surface of the flange portion 21 of the flesh and bone separation filter 2 is in contact with the Teflon seal member 7 mounted on the pedestal portion 3a of the lid member 3.

In this state, from the measure investment population 48a and 10a, the measure 1
5, the measure enters the meat and bone separation filter 2, where the hydraulic cylinder 11 is actuated downward and its piston 43 descends, causing the meat squeezing piston 9 to be moved by the end member 40 by the piston rod 41. Arrow A in Figure 11
The meat squeezing piston moves down as shown in the guide cylinder 10.
It is guided by and fits into the meat and bone separation filter 2 from above, and the measure 15 is squeezed. And meat squeezing piston 9
As the meat and bone separation filter 2 descends, the amount of the measure 15 in the meat and bone separation filter 2 gradually decreases, and the measure 15 from which the small bones 16 have been removed passes through the slit 21 and is delivered into the meat removal chute 8. In such a compression process, if the width of the slit 21 is set to 0.5 mm, the small bones 16 having a grain size of 0.5 mm or more cannot pass through the slit 21, so the meat gradually It accumulates on the lower part of the bone separation filter 2, that is, on the pedestal part 3a. In the squeezing process of measure 15, a considerably large radial force acts on the cylinder 2a of the meat and bone separation filter 2 due to measure 15, but this radial expansion force is counteracted by the supports provided at four locations. The portion 2j resists, and although the slit 21 is formed, the cylinder 2a itself exerts resistance against this expansion force, and the meat and bone separation filter 2 is prevented from expanding by the compression force of the meat compression piston 9. Slit 2 again
1 is completely prevented from spreading due to the resistance force of the strut portions 2j, and the meat and bone separation filter 2 will not be deformed. In addition, in the meat and bone separation filter 2, since an inner groove 2d is formed on the inner circumferential surface 2b, the measure 15 is smoothly introduced into the slit 21 by this inner groove, passes through the slit, and enters the outer groove 2e. It comes out, expands, and is released to the outside, and its movement is extremely smooth. Also, since the thickness t of the thick portion 2h is set to 1.5 or less, it passes through the slit 21 because less frictional heat is generated. Measure 1
Particularly among 5, the oil and fat content is very unlikely to oxidize.
The taste of the measure 15 from which the small bones 16 have been separated and removed does not change. Also, the width of the slit 21 is Q, 4 mm, 0.3 m.
When the particle diameter is set to m, etc., even small bones 16 having a smaller particle size can be removed.

Furthermore, since the meat and bone separation filter 2 is made of, for example, 18-8 stainless steel, it will not corrode permanently.
In addition, since this is formed in one piece, the slit 21
Since there are no gaps other than the slits 21, there is no possibility that oil and fat in the surimi 15 will enter the gaps other than the slits 21 and cause corrosion. Since it has very high durability, the meat and bone separation filter 2 can be used semi-permanently.

Incidentally, along with the small bones 16, larger muscles are also sufficiently removed by the muscle-bone separation filter. Such a line is Surin 1-2
It cannot pass through i and is removed by bending and getting caught in the thick part 2h.

The meat squeezing piston 9 descends as shown by arrow A to perform one action 1.
5 is completed, the meat pressing piston 9 is pulled up by the piston 43 and the piston rod 41 by the upward movement of the hydraulic cylinder 11, and the piston flange 12 is moved to the position where the pressure is applied as shown in FIG. 1
0a, 48a, and a new unprocessed measure 15 is introduced from here and enters the meat and bone separation filter 2. Then, the hydraulic cylinder 11 is operated downward again in the same manner as described above, and the squeezing operation of the measure 15 is performed. Each time such a squeezing operation is performed, the meat from which the small bones 16 and larger muscles have been separated and removed is sent out from the meat removal chute 8 and transported to other processes by a conveyor or the like.

In the meat and bone separation device 1 according to the present invention, such a series of squeezing operations can be automatically performed in conjunction with other steps. When such a squeezing operation is repeated, as shown in FIG. 11, the removed small bones 16 gradually accumulate on the lid member 3.
The effective volume of the meat and bone separation filter 2 decreases (therefore, when the number of small bones 16 reaches a certain amount or more, the meat and bone separation filter 2 must be removed and the small bones must be discarded.

Next, the cleaning work of the meat and bone separation filter 2, meat compression piston 9, etc. in such a case will be explained. To remove the meat and bone separation filter 2 from the housing device 6, first operate the hydraulic cylinder 26 of the support device 5 in the right direction in FIG. 2, move the piston rod 29 in the same direction, and move the crank 30 in the right direction in FIG. Rotate clockwise and lock lever 33
horizontally as shown by the imaginary line, and the hydraulic cylinder 22 of the opening/closing device 4 is operated downward to lower the lid member 3 via the arm member 21 with the piston rod 23,
The pedestal portion 3a is positioned below the guide plate 20. As a result, the restriction of the flange portion 21 of the meat and bone separation filter 2 in the front direction is released. Next, the guide plate 38
Loosen the tightening knob 47 of the positioning plate 45 attached to the guide plate 38, and rotate the positioning plate 45 forward. As a result, the restriction on the flange portion 2 in the forward direction is released. Therefore, by pulling out the meat and bone separation filter 2 forward, the meat and bone separation filter 2 can be easily taken out from the storage device 6. Then, the small bones 16 accumulated on the lid member 3 can be removed, and the lid member can be washed with water or the like. Furthermore, the meat and bone separation filter 2 removed from the storage device 6 can be cleaned with tap water or the like in all its parts, especially the sulin 1-2i, the inner groove 2d, the outer groove 2e, etc. It is clear that during such a cleaning operation, another cleaned meat-bone separation filter 2 can be attached to the meat-bone separation device 1 and the squeezing operation of measure 15 can be performed without interruption.

Next, a case will be explained in which, for example, the meat pressing piston 9 is also cleaned at the end of the day's work. By operating the operating button 56, the hydraulic cylinder 1 is moved further upwards, causing the piston 4 to move upwardly.
3 rises beyond the normal top dead center, and the meat squeezing piston 9 opens its piston flange 12 as shown in phantom lines in FIG.
It rises until it comes out of the guide cylinder 10, rises to the position shown in FIG. 4, and stops. Then, by loosening the tightening knob 52, the piston guide 50 can be opened and closed.
is opened from the center by a hinge 50a, and the guide cylinder 10 etc. can be washed with water.

In addition, in such a state, the head 13 of the long bolt 13
When C is rotated with a tool, the threaded portion 13a comes off the piston flange 12, so that the piston flange can be easily removed downward from the meat squeezing piston 9. Therefore, when the piston flange 12 is removed, the water flow hole 40a of the end member 40 becomes open, so if water or the like is injected into the hollow part 9b from the upper end 9a of the meat squeezing piston 9, it can be used around the hydraulic cylinder 11 and other places. All the dirt adhering to the meat pressing piston 9 is washed away, and the water flows downward from the water flow hole 40a, so that the dirt inside the meat pressing piston 9 can be washed away. When such a cleaning operation is completed, the piston flange 12 is applied from below again, the long bolt 13 is rotated in the opposite direction to be screwed onto the end member 40, and the normal use state can be returned.

Also, meat extraction chute 8, opening/closing piston guide 50, meat squeezing piston 9, piston flange 12; end member 40
Since the guide cylinder 10 and the like are all made of metal with high corrosion resistance, such as 18-8 stainless steel, there is no corrosion at all, especially the guide cylinder 10.
Since the is treated with Teflon, the meat squeezing piston 9 can be smoothly guided to the meat and bone separation filter 2, and its wear can be reduced.

In addition, since the lock lever 33 of the support device 5 is oriented vertically during the squeezing operation of measure 15 as shown by the solid line in FIG. The hydraulic cylinder 22 can be sufficiently supported against the compressive force, and no unreasonable load is applied to the hydraulic cylinder 22.

In addition, in the above example, meat was explained as Measure 15 of beef and pork, but this is not limited to Measure 15.
It is clear that other meats can also be used, such as regular beef, pork, chicken or fish.

Further, in the above embodiments, a vertical type meat and bone separating device l has been described, but this is not limited to a vertical type, and a horizontal type or an inclined type can also be used.

Effects Since the present invention is constructed and operates as described above, the meat and bone separation filter is made of an integrated metal with high corrosion resistance.
For example, since it is made of 18-8 stainless steel, it can be put to practical use in the treatment of beef and pork with a high fat content, and as a result, the quality of the treatment of medium-sized pork can be greatly improved, making it expensive. This has the effect of being able to sell products to customers. In addition, since the meat and bone separation filter is constructed as a single piece, there are no gaps other than the slits for removing small bones, which completely prevents oxidation and putrefaction due to the infiltration of meat juices, making it extremely safe from a sanitary standpoint. It has the effect of preventing the taste of the product from deteriorating. Furthermore, the thickness of the thick portion where the slit is formed can be made as small as possible by the inner groove and the outer groove, so that the material passing through the slit can be prevented from being oxidized by frictional heat. In addition, since the width of the slit was set to 0.5 mm or less, the particle size was 0.5 mm.
Since small bones larger than 5 cranes can be completely removed, it is possible to prepare beef and pork that can be used in large quantities for ham, sage, etc. Furthermore, since the slits are processed by electric discharge machining or laser beam machining,
It has the effect of making it possible to make slits with a width of 0.5 mm or less in 18-8 stainless steel, which has poor machinability, without damaging the cutting tool. In addition, when machining the slits, we left struts in multiple places to maintain strength, so the struts are formed at the same time as the slit is completed, and there is no need for additional formal processing such as welding. The present invention has the advantage that it is possible to obtain a meat and bone separation filter having sufficient strength to withstand strong compressing force. Furthermore, since flanges are formed at both ends of the filter, it can be easily attached to and detached from the meat and bone separating device, and there is an effect that removal of small bones and cleaning of the filter can be easily performed.

[Brief explanation of drawings]

The drawings relate to embodiments of the present invention, and FIG. 1 is an overall perspective view of the meat and bone separation device, FIG. 2 is a vertical sectional view of the main part of the meat and bone separation device, and FIG. 3 is a state in which the meat and bone separation filter is removed. FIG. 4 is a perspective view showing a state in which the meat compression piston is pulled up further above the normal top dead center and the retractable piston guide 50 is opened. FIG. 5 is a perspective view of the meat and bone separation filter. , FIG. 6 is a partial vertical cross-sectional view showing a state in which slits are processed by laser beam processing, FIG. 7 is a front view of the meat-bone separation filter, FIG. 8 is a vertical cross-sectional view of the meat-bone separation filter, and FIG. Figure 9 is a longitudinal sectional view of part B in Figure 8, and Figure 10 is a longitudinal cross-sectional view of part B in Figure 8.
11 is a longitudinal cross-sectional view of the main part showing the state of the measure during compression work. 2 is a meat and bone separation filter, 2a is a cylinder, 2b is an inner peripheral surface, 2
C is the outer peripheral surface, 2d is the inner groove, 2e is the outer groove, 2f, 2g
is the valley part, 2h is the thick part, 21 is the slit, 2j is the support part, 2, 2N is the flange part, 15 is an example of the meat,
16 is a small bone.

Claims (1)

[Scope of Claims] 1. Basically, it is made of metal with high corrosion resistance in one piece in a cylindrical shape, and a large number of V-shaped inner grooves are formed in the circumferential direction from the inner peripheral surface to the outer peripheral surface of the cylinder. At the same time, a large number of V-shaped circumferential outer grooves are formed from the outer circumferential surface of the cylinder toward the inner circumferential surface at the same position as the inner groove and facing the inner groove,
A slit having a width such that small bones in the meat cannot pass through is formed in the thick part between the inner groove and the valley part of the outer groove in the circumferential direction, and the slit is formed in a plurality of places in the circumferential direction of the thick part. A meat and bone separation filter characterized in that no slits are formed and a strut portion is provided for maintaining strength. 2. The meat and bone separation filter according to claim 1, wherein the metal is 18-8 stainless steel. 3. The meat and bone separation filter according to claim 1, wherein the width of the slit is 0.5 mm or less. 4. The meat and bone separation filter according to claim 1, wherein the thickness of the thick portion is 1.5 mm or less. 5. The meat and bone separation filter according to claim 1, wherein the support columns are formed at four locations at equal intervals in the circumferential direction. 6. The flesh and bone separation filter according to claim 1, wherein the cylinder has flange portions formed at both ends thereof. 7 A large number of V-shaped inner circumferential grooves are formed by cutting on the inner circumferential surface of a one-piece metal cylinder with high corrosion resistance toward the outer circumferential surface, and grooves are formed on the outer circumferential surface of the cylinder toward the inner circumferential surface. so that a large number of V-shaped circumferential outer grooves are located at the same position as the inner groove, facing the inner groove, and a thick part of a predetermined thickness is left between the valleys of both grooves. After that, slits with a width such that small bones in the meat cannot pass through are formed in the thick part by special processing in most parts of the circumference, and the thickness of the wall where the slits are not formed is 1. A method for manufacturing a meat and bone separation filter, characterized in that struts for maintaining strength are formed at multiple locations in the circumferential direction of the filter at the same time as the slits are processed. 8. The method for manufacturing a meat and bone separation filter according to claim 7, wherein the special processing is electrical discharge machining. 9. The method for manufacturing a meat and bone separation filter according to claim 7, wherein the special processing is laser beam processing.