Inspection tool for resin formation machine and inspection device

Abstract

To clarify a part of a cylinder hole direction that is being inspected in an inner surface inspection including a measurement of the inner diameter of a cylinder hole of a resin formation machine.SOLUTION: An inspection jig 20 supports an inspection unit 11 for inspecting a cylinder hole 3 of a resin transfer barrel 2 of a resin formation machine 1 for inner surfaces. A support member 21 of the inspection jig 20 is attached to a determined position of an end surface 2a of the resin transfer barrel 2. A shaft 12 extending from the inspection unit 11 is passed through a shaft insertion hole 22 of the support member 21. A rotary member 30 provided on the shaft 12 is attached to the support member 21 with its angle adjustable about a rotational axis L along the shaft 12. An angle fixation mechanism 42 fixes the angle of the rotary member 30 to the support member 21.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an inspection jig and an inspection apparatus for a resin molding machine, and more particularly to an inspection jig and an inspection apparatus used for performing an inner surface inspection such as measuring the inner diameter of a cylinder hole of a resin molding machine.

Background Art

[0002] As an inner surface inspection means for measuring the inner diameter of this type of cylinder hole, a cylinder gauge is generally used. For example, in the cylinder gauge of Patent Document 1, a dial gauge is provided at the hand end of a rod-shaped shaft. At the tip of the shaft, a measuring element is provided so as to be able to advance and retract in a direction orthogonal to the shaft. The measuring element is linked to the dial gauge via a linkage mechanism. The amount of advance and retraction of the measuring element abutted against the inner wall of the cylinder hole is displayed on the dial gauge as the inner diameter of the cylinder hole.

[0003] Patent Document 2 discloses an inner surface inspection means comprising an optical inner diameter measuring device. In the optical inner diameter measuring device, a stopper is provided at an intermediate portion of a rod-shaped shaft. The stopper includes three pressing members at intervals of 120 degrees. Each pressing member can advance and retract in the radial direction. By abutting these pressing members against the inner wall of the hole to be measured, the axial position of the inner diameter measuring device is fixed. An optical displacement meter such as a laser displacement meter is provided at the tip of the shaft. While the optical displacement meter is rotated around the axis of the shaft, the inner diameter of the hole is optically measured over the entire circumference.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] Since internal inspection means such as a general cylinder gauge are used by being held by a measurer by hand, etc., it is ambiguous which inner diameter in the circumferential direction of the cylinder hole has been measured. The internal inspection means comprising the optical internal diameter measuring device of Patent Document 2 can fix the shaft to the measurement object with a stopper, but it is not clear at which angle it is fixed. For this reason, it is not clear which internal diameter measurement value is in which direction, and when there are abnormalities such as wear and scratches on the inner surface of the measurement object, it is not easy to specify where on the circumferential direction they are located. In view of such circumstances, an object of the present invention is to clarify which part in the circumferential direction of the cylinder hole is being inspected when performing an internal inspection such as measuring the inner diameter of the cylinder hole of a resin molding machine.

Means for Solving the Problems

[0006] In order to solve the above problems, the present invention is an inspection jig for a resin molding machine that supports an inspector for performing an internal inspection including measuring the inner diameter of a cylinder hole formed in a resin transfer barrel of a resin molding machine, having a shaft insertion hole through which a shaft extending from the inspector passes, and a support member positioned and attached to the end face of the resin transfer barrel, a rotating member provided on the shaft and attached to the support member so as to be angle-adjustable about a rotation axis along the shaft, an angle fixing mechanism for fixing the angle of the rotating member with respect to the support member, and characterized by comprising the above.

[0007] The support member is attached to the resin transfer barrel at a predetermined position and at a predetermined angle. The rotating member is supported by the support member. As a result, the shaft and the inspector are supported by the support member via the rotating member, and further supported by the resin transfer barrel via the support member. By adjusting the angle of the rotating member with respect to the support member, the inspector is angle-adjusted with respect to the resin transfer barrel. By fixing the rotating member at a predetermined angle with respect to the supporting member by means of an angle fixing mechanism, the inner diameter measuring direction of the cylinder hole by the inspection device is directed in a fixed direction correlated with the predetermined angle. Alternatively, in the case of a structure in which the inspection device measures the inner diameter over the entire circumference while rotating around the axis of the shaft (see Patent Document 2), the reference direction of the measurement (the rotation reference angle of the inspection device) may be directed in a fixed direction correlated with the predetermined angle of the supporting member of the fixing member. Thereby, it is possible to clarify which part in the circumferential direction of the inner surface of the cylinder hole is being inspected. Therefore, when there are dents due to wear, scratches, etc. on the inner surface of the cylinder hole, the location of the dents can be clearly specified.

[0008] Preferably, a plurality of connection holes for connection with a resin transfer head or a mold are formed in the end face. The supporting member has engaging portions with at least two shaft members, and each of the shaft members can be fitted into a corresponding connection hole. When installing the supporting member, at least two shaft members engaged with the supporting member are fitted into the connection holes. Thereby, the supporting member can be positioned with respect to the resin transfer head.

[0009] Preferably, the relative positional relationship between the connection hole and the central axis of the cylinder hole, and the relative positional relationship between the engaging portion and the rotation axis in the state where the rotating member is attached to the supporting member, coincide with each other. When the supporting member is positioned and attached to the resin transfer head, and the rotating member is attached to the supporting member, the rotation axis naturally coincides with the central axis of the cylinder hole, and the shaft can be arranged on the central axis of the cylinder hole. Preferably, since the rotation axis coincides with the central axis of the cylinder hole, the rotating member rotates (angle adjustment) around the central axis of the cylinder hole.

[0010] Preferably, the angle fixing mechanism includes a locking portion integrally formed or detachably provided on one of the support member and the rotating member, and a plurality of locking receivers provided at intervals in the circumferential direction of the other of the support member and the rotating member, One of the locking receivers selected according to the angle of the rotating member is locked with the locking portion. By locking the locking receiver and the locking portion, the angle of the rotating member with respect to the support member is fixed.

[0011] The inspection device for a resin molding machine according to the present invention is An inspector that performs an inner surface inspection including measuring the inner diameter of a cylinder hole formed in a resin transport barrel of a resin molding machine, An inspection jig that supports the inspector, and is provided with, the inspection jig A support member having a shaft insertion hole through which a shaft extending from the inspector passes and being positioned and attached to an end surface of the resin transport barrel, A rotating member provided on the shaft and attached to the support member so as to be angle-adjustable around a rotation axis along the shaft, An angle fixing mechanism for fixing the angle of the rotating member with respect to the support member, and is characterized by including the above. According to the inspection device for a resin molding machine, it is possible to clarify where the inspector is directed in the circumferential direction of the cylinder hole of the resin transport barrel, and it is possible to clarify which part in the circumferential direction of the inner surface of the cylinder hole is being inspected.

[0012] Preferably, the inspector includes an inspector main body that holds an inspection functional portion for performing the inner surface inspection, and a moving guide that is provided on the inspector main body and is rollable or slidable in contact with the inner surface of the cylinder hole. Thereby, the inspector can be smoothly moved in the cylinder.

[0013] Preferably, the movement guide has a plurality of protrusions protruding from the outer peripheral surface of the inspector body, and these protrusions are arranged apart from each other at least in the circumferential direction among the axial direction and the circumferential direction of the inspector body. Thereby, the inspector can be stably held in the cylinder.

[0014] Preferably, with each protrusion separated in the circumferential direction being in contact with the inner surface of the cylinder hole, the rotation axis coincides with the central axis of the cylinder hole. Thereby, the inspector can be stably rotated around the central axis of the cylinder hole for angle adjustment.

[0015] Preferably, the protrusion includes a spherical seat having a partially concave spherical shape that opens outward in the radial direction of the inspector body, and a spherical rolling element rotatably held on the spherical seat. When the rolling element contacts and rolls on the inner surface of the cylinder hole, the inspector can be smoothly moved in the axial direction and the circumferential direction of the cylinder hole.

[0016] Preferably, the shaft is connected to the inspector body. The rotation angle of the inspector can be grasped by the angle of the rotating member provided on the shaft with respect to the supporting member. Consequently, it is possible to clarify which part in the circumferential direction of the inner surface of the cylinder hole is being inspected.

Advantages of the Invention

[0017] According to the present invention, when performing an inner surface inspection such as measuring the inner diameter of the cylinder hole of a resin molding machine, it is possible to clarify which part in the circumferential direction of the cylinder hole is being inspected.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Embodiments for Carrying Out the Invention

[0019] Hereinafter, embodiments of the present invention will be described with reference to the drawings. <First Embodiment (Figs. 1 to 4)> As shown in Fig. 1, the present invention is applied to the inspection of the resin molding machine 1. As shown in Fig. 2(b), examples of the resin molding machine 1 include an injection molding machine and an extrusion molding machine. The resin molding machine 1 includes a resin transfer barrel 2. As shown in Fig. 2(b) and Fig. 3, a cylinder hole 3 is formed in the resin transfer barrel 2. The cylinder hole 3 extends in the axial direction of the resin transfer barrel 2 (the left-right direction in Fig. 2(b)) and reaches the head-side end face 2a (end face) of the resin transfer barrel 2 and opens there. Note that the number of the cylinder holes 3 may be one or two (plural) (Fig. 3). As shown in Fig. 2(b), a screw 4 (resin transfer mechanism) is accommodated in the cylinder hole 3. The resin transfer mechanism is not limited to the screw 4 and may be a plunger or the like.

[0020] A mold 8 is provided at the head-side end of the resin transfer barrel 2 via a resin transfer head 7. A plurality of connection holes such as bolt holes 2b and pin holes 2d for connection with the resin transfer head 7 are formed in the head-side end face 2a of the resin transfer barrel 2. A connection bolt 5b is screwed into the bolt hole 2b through the resin transfer head 7. A positioning pin 5d is inserted into the pin hole 2d through the resin transfer head 7. Note that the resin transfer head 7 may be omitted and the mold 8 may be directly connected to the resin transfer barrel 2 portion.

[0021] As shown in Fig. 2(b), a resin raw material a is supplied from a raw material supply unit 6 to the resin transfer barrel 2. The resin raw material a is transported to the head side of the cylinder hole 3 by the screw 4 while being heated and melted, and is introduced into the mold 8 through the resin transfer head 7 to be molded.

[0022] As shown in Fig. 2(a), during maintenance or the like of the resin molding machine 1, an internal surface inspection such as an inner diameter measurement of the cylinder hole 3 is performed by an inspection device 9 for the resin molding machine. For example, by the inner diameter measurement, the presence or absence of dents due to wear, scratches, etc. on the inner surface of the cylinder hole 3 is inspected, and furthermore, the depth and position of the dents are confirmed.

[0023] As shown in FIGS. 1 and 3, the inspection device 9 for a resin molding machine includes an inner surface inspection means 10 and an inspection jig 20. The inner surface inspection means 10 may be a general inner diameter measuring means such as a cylinder gauge, or an optical inner diameter measuring device that optically measures the inner diameter with a laser or the like. Specifically, the inner surface inspection means 10 includes an inspector 11 inserted into the cylinder hole 3 and a shaft 12 extending from the inspector 11. The inspector 11 is provided at the insertion end (the right end in FIG. 1) of the shaft 12.

[0024] When the inner surface inspection means 10 is a cylinder gauge, the inspector 11 includes a measuring element (inspection functional part) that can move forward and backward in a direction perpendicular to the shaft 12. A dial gauge (not shown) is provided at the hand end (the left end in FIG. 1) of the shaft 12 (see Patent Document 1, etc.). When the inner surface inspection means 10 is an optical inner diameter measuring device, the inspector 11 includes an optical displacement meter (inspection functional part) such as a laser displacement meter (see Patent Document 2, etc.).

[0025] As shown in FIGS. 2(a) and 4, the inner surface inspection means 10, and thus the inspector 11, is supported by the inspection jig 20. The inspection jig 20 includes a support member 21 and a rotating member 30. As shown in FIGS. 1 and 3, the support member 21 is, for example, in the shape of a generally rectangular plate. A shaft insertion hole 22 is formed in the central portion of the support member 21. The shaft 12 is passed through the shaft insertion hole 22.

[0026] As shown in FIGS. 2(a) and 3, an annular accommodation recess 23 is formed around the shaft insertion hole 22 in the support member 21. A plurality of index holes 24 are formed around the accommodation recess 23. As shown in FIG. 3, the index holes 24 are arranged at regular angular intervals in the circumferential direction of the shaft insertion hole 22.

[0027] As shown in Fig. 2(a), further, a plurality of engagement holes 25, 26 (engagement portions) are formed in the support member 21. As shown in Fig. 3, the engagement holes 25, 26 may be in the form of notch recesses reaching the outer peripheral edge of the support member 21. As shown in Fig. 2(a), a mounting bolt 40 (shaft member) is screwed into the bolt hole 2b (connection hole) through one engagement hole 25. A positioning pin 41 (shaft member) is fitted into the pin hole 2d (connection hole) through another engagement hole 26. Thus, the support member 21 is positioned and fixed to the head-side end face 2a of the resin transfer barrel 2.

[0028] Note that the support member 21 only needs to have engagement holes 25, 26 (engagement portions) for at least two shaft members 40, 41. The at least two shaft members may be a combination of one mounting bolt 40 and one positioning pin 41, two mounting bolts 40, or two positioning pins 41. Each shaft member 40, 41 can be fitted into the corresponding connection holes 2b, 2d through the corresponding engagement holes 25, 26.

[0029] As shown in Fig. 4, a rotating member 30 is stacked on the support member 21. The rotating member 30 is supported by the support member 21. The rotating member 30 is in the shape of a circular plate. As shown in Figs. 2(a) and 3, a center hole 31 is formed in the central portion of the rotating member 30. The shaft 12 passes through the center hole 31. The shaft 12 is arranged on the central axis of the rotating member 30. The rotating member 30 is fixed at a fixed angle relative to the shaft 12 and cannot rotate relative to it. Therefore, the inner surface inspection means 10 is supported by the support member 21 via the rotating member 30, and further supported by the resin transfer barrel 2 via the support member 21. The rotating member 30 may be adjustable in the axial direction of the shaft 12.

[0030] As shown in Fig. 1, a circular convex portion 33 protruding toward the support member 21 is formed on the rotating member 30. As shown in Fig. 2(a), the circular convex portion 33 is housed in the housing recess 23. The rotating member 30 rotates around the rotation axis L along the shaft 12 with respect to the support member 21 by an angle is detachably attached for degree adjustment.

[0031] The shaft 12 is disposed on the central axis C of the cylinder hole 3, and the rotation axis L coincides with the central axis C. Therefore, the rotating member 30 is angle-adjustable about the central axis C of the cylinder hole 3. Consequently, the inner surface inspection means 10 is angle-adjustable about the central axis C.

[0032] As shown in FIG. 3, a locking hole 34 is formed at one location of the rotating member 30. The distance from the center of the rotating member 30 to the locking hole 34 is equal to the distance from the center of the shaft insertion hole 22 of the support member 21 to the index hole 23.

[0033] As shown in FIG. 2(a), the locking bolt 43 is screwed into and locked to the selected one index hole 23 (locking receiving portion) through the locking hole 34. Thereby, the rotating member 30 is fixed to the support member 21.

[0034] The index hole 23, the locking hole 34, and the locking bolt 43 constitute an angle fixing mechanism 42 for fixing the angle of the rotating member 30 with respect to the support member 21. The locking bolt 43 constitutes a locking portion that is locked to the selected locking receiving portion 23. The locking bolt 43 is detachable from the rotating member 30.

[0035] As shown in FIG. 3, the relative positional relationship (relative direction and separation distance, the same hereinafter) between the bolt hole 2b (connection hole) in the resin transfer barrel 2 and the central axis C of the cylinder hole 3, and the relative positional relationship between the engagement hole 25 and the rotation axis L in the state where the rotating member 30 is attached to the support member 21 are coincident with each other. Also, the relative positional relationship (relative direction and separation distance) between the pin hole 2d (connection hole) in the resin transfer barrel 2 and the central axis C of the cylinder hole 3, and the relative positional relationship between the engagement hole 26 and the rotation axis L in the state where the rotating member 30 is attached to the support member 21 are coincident with each other.

[0036] The inner diameter of the cylinder hole 3 of the resin molding machine 1 is measured and then the inner surface is inspected by the inspection device 9 for the resin molding machine as follows. First, the resin transfer barrel 2 and the resin transfer head 7 are separated. As a result, the head-side end face 2a is exposed. Next, the support member 21 is applied to the head-side end face 2a, and the positioning pin 41 is passed through the engagement hole 26 and fitted into the pin hole 2d. Also, the mounting bolt 40 is passed through the engagement hole 25 and screwed into the bolt hole 2b. As a result, the support member 21 can be attached to the resin transfer barrel 2 at a specified position.

[0037] Next, the shaft 12 is passed through the shaft insertion hole 22, and the inspector 11 is inserted into the cylinder hole 3. Furthermore, the circular convex portion 33 of the rotating member 30 is fitted into the accommodation recess 23, so that the rotating member 30 is superposed on the support member 21. Then, due to the relative positional relationship described above, the shaft 12 is arranged on the central axis C of the cylinder hole 3, and the rotating member 30 and the inner surface inspection means 10 can be adjusted in angle about the central axis C.

[0038] Subsequently, the rotating member 30 is rotated to face a predetermined angle. Specifically, one of the plurality of index holes 23 is selected, and the angle of the rotating member 30 is determined so that the selected index hole 23 and the locking hole 34 coincide. Although illustration is omitted, an angle scale may be provided on the support member 21, and the angle of the rotating member 30 may be determined using the scale as an indicator.

[0039] Then, the locking bolt 43 is passed through the locking hole 34 and screwed into the selected index hole 23. As a result, the rotation of the rotating member 30 is blocked, and the rotating member 30 is fixed in a state of being oriented at a predetermined angle with respect to the support member 21. Furthermore, the inner surface inspection means 10 is oriented and fixed in a certain direction correlated with the predetermined angle of the rotating member 30 with respect to the resin transfer barrel 2.

[0040] Thereafter, the inner diameter of the cylinder hole 3 is measured by the inspector 11. At this time, the inner diameter measurement direction by the inspector 11 is directed toward the fixed direction. Or, in the case of a structure in which the inspector 11 measures the inner diameter over the entire circumference while rotating around the axis of the shaft 12 (see Patent Document 2), the reference direction of the measurement may be directed toward the fixed direction.

[0041] Thereby, it is possible to clarify which part in the circumferential direction of the inner surface of the cylinder hole 3 is being inspected. Therefore, when there is a dent due to wear, scratches, etc. on the inner surface of the cylinder hole 3, it is possible to clearly specify where the dent is in the circumferential direction of the cylinder hole 3.

[0042] Next, another embodiment of the present invention will be described. In the following embodiments, for the configurations that overlap with the previously described embodiments, the same reference numerals are given in the drawings and the description thereof is omitted. <Second Embodiment (FIG. 5)> As shown in FIG. 5, in the inspection device 9B for a resin molding machine according to the second embodiment of the present invention, the support member 51 of the inspection jig 50 for a resin molding machine is formed in a disk shape. One or a plurality (here, three) of locking portions 52 are integrally formed on the support member 51. The locking portion 52 protrudes from the peripheral edge of the housing recess 23. The plurality of locking portions 52 are arranged at equal intervals in the circumferential direction of the peripheral edge of the housing recess 23.

[0043] The rotating member 53 of the inspection jig 50 for a resin molding machine is formed in a gear shape. On the outer peripheral portion of the circular rotating member 53, tooth tops 54 and tooth valleys 55 of the gear are alternately formed in the circumferential direction. The tooth valley 55 constitutes a recessed or notched locking receiving portion 55 that can be fitted with the locking portion 52. In other words, a plurality of locking receiving portions 55 are provided on the rotating member 53 at intervals in the circumferential direction of the rotating member 53. The locking portion 52 and the locking receiving portion 55 constitute an angle fixing mechanism 56.

[0044] When inspecting the inner surface of the cylinder hole 3 (see FIGS. 1 to 3) with the inspection device 9B for a resin molding machine, the support member 51 is positioned and attached to the head-side end surface 2a (see FIGS. 1 to 3) of the resin transfer barrel 2 by the shaft member 57. Next, the shaft 12 of the inner surface inspection means 10 is passed through the shaft insertion hole 22 of the support member 51, and the inspector 11 is inserted into the cylinder hole 3. Thereafter, after adjusting the angle of the rotating member 53 so that the inspector 11 faces a certain direction, while fitting the locking receiving portion 55 selected according to the angle of the rotating member 53 and the corresponding locking portion 52 to each other, the rotating member 53 is housed in the housing recess 23. By fitting the locking portion 52 and the locking receiving portion 55 to each other, the angle of the rotating member 53 with respect to the support member 51 is fixed. As a result, the inner diameter of the cylinder hole 3 can be measured in a state where the inner diameter measurement direction or the measurement reference direction of the inspector 11 is directed to the certain direction. Therefore, it is possible to clearly specify which part in the circumferential direction of the inner surface of the cylinder hole 3 is being inspected. As a result, when there is a dent due to wear, damage, or the like on the inner surface of the cylinder hole 3, the location of the dent can be clearly specified.

[0045] <Third Embodiment (FIG. 6)> As shown in FIG. 6, in the inspection device 9C for a resin molding machine according to the third embodiment of the present invention, an index plunger 70 is provided at one location in the circumferential direction of the outer peripheral portion 62 of the disk-shaped support member 61 of the inspection jig 60 for a resin molding machine. The index plunger 70 has a holder 71, a pin 72 (locking portion), and a spring 73 (biasing means). In the holder 71, the pin 72 is held so as to be able to project and retract in the radial direction of the support member 61. The spring 73 in the holder 71 presses the pin 72 toward the inner side in the radial direction.

[0046] A plurality of index holes 64 (locking receiving portions) are formed in the outer peripheral portion of the rotating member 63. Each index hole 64 is drilled in the radial direction of the rotating member 63 from the outer peripheral surface of the rotating member 63. The plurality of index holes 64 are arranged at equal intervals in the circumferential direction of the rotating member 63. The indexing plunger 70 and the indexing hole 64 constitute an angle fixing mechanism 65.

[0047] When the inner surface of the cylinder hole 3 (see FIGS. 1 to 3) is inspected by the resin molding machine inspection device 9C, after positioning and attaching the support member 61 to the head side end surface 2a (see FIGS. 1 to 3) of the resin transfer barrel 2, the inspector 11 is inserted into the cylinder hole 3, and while adjusting the angle of the rotating member 63 so that the inspector 11 faces a certain direction, the rotating member 63 is superposed on the support member 61. Then, according to the angle of the rotating member 53, the pin 72 of the indexing plunger 70 fits into the opposing indexing hole 64 (the selected one locking receiving portion), thereby fixing the angle of the rotating member 63 with respect to the support member 61. As a result, the inner diameter of the cylinder hole 3 can be measured in a state where the inner diameter measuring direction or the measurement reference direction of the inspector 11 is directed to the certain direction. Therefore, it is possible to clearly specify which part in the circumferential direction of the inner surface of the cylinder hole 3 is being inspected. As a result, when there is a dent due to wear, damage, etc. on the inner surface of the cylinder hole 3, the location of the dent can be clearly specified.

[0048] <Fourth Embodiment (FIGS. 7 to 11)> As shown in FIG. 7, in the resin molding machine inspection device 9D according to the fourth embodiment of the present invention, the inspector 11D of the inner surface inspection means 10D has an inspection function unit 13 and an inspector body 14. The inspection function unit 13 has a function of inspecting the inner surface of the cylinder hole 3. For example, the inspection function unit 13 includes a pair of laser displacement meters 13a (optical displacement meters) and a prism 13b that refracts the laser optical axis at a right angle.

[0049] As shown in FIGS. 7 and 8, the inspection function unit 13 is held by the inspector body 14. The inspector body 14 is formed in a substantially cylindrical shape. A pair of laser displacement meters 13a are arranged and housed inside the inspector body 14. A prism 13b is installed on the side portion of the inspector body 14 so as to face each laser displacement meter 13a. The material of the inspector body 14 is not particularly limited as long as it satisfies the required strength and can ensure the inspection accuracy, and aluminum alloy, steel, hard resin, etc. are used.

[0050] As shown in FIGS. 7 and 8, the inspection device main body 14 is provided with guide support plates 81 and 82 and a movement guide 89. A guide support plate 81 is provided at the insertion end in the axial direction (the left end in FIG. 7) of the inspection device main body 14. As shown in FIGS. 8 and 9, the guide support plate 81 is formed in a plate shape of a polygon (for example, an octagon) having substantially the same size and shape as the cross section of the inspection device main body 14.

[0051] As shown in FIGS. 7 and 10, a pair of guide support plates 82 are provided at the hand end in the axial direction (the right end in FIG. 7) of the inspection device main body 14. As shown in FIG. 10, each guide support plate 82 is formed in a substantially fan-shaped plate shape. The pair of guide support plates 82 are arranged to face each other 180° apart around the central axis of the inspection device 11D. An arrangement space 14s for the laser displacement meter 13a is formed between the circumferential side edges 82e of these guide support plates 82. A central hole 82c is formed between the arc concave opposing end faces 82d of these guide support plates 82.

[0052] As shown in FIG. 7, the insertion end portion of the shaft 12 is inserted through the central hole 82c into the intermediate cylinder portion 14c between the guide support plates 81 and 82 in the inspection device main body 14 and is screwed from the side. Thereby, the inspection device main body 14 and the shaft 12 are connected. The central axis of the inspection device main body 14 coincides with the rotation axis L of the shaft 12.

[0053] A rotating member 30 is provided on the hand side portion (the right side portion in FIG. 7) of the shaft 12 so as to be preferably non-rotatable relative to the shaft 12 and slidable in the axial direction (the left-right direction in FIG. 7).

[0054] As shown in FIGS. 8 to 10, a moving guide 89 is supported by each of the guide support plates 81 and 82. The moving guide 89 protrudes from the outer peripheries of the guide support plates 81 and 82 and is in rolling or sliding contact with the inner surface of the cylinder hole 3. The moving guide 89 includes a plurality of guide members 90. These guide members 90 are arranged at intervals in the circumferential direction of the guide support plates 81 and 82.

[0055] As shown in FIGS. 9 to 11, each guide member 90 includes a protrusion 91 (head) and a threaded leg 92. The threaded leg 92 is screwed into the screw hole 83 of the guide support plates 81 and 82 with its axis directed in the radial direction of the inspector body 14.

[0056] As shown in FIG. 11, a protrusion 91 is provided at the top end portion (the upper end portion in FIG. 11) of the threaded leg 92. The protrusion 91 protrudes radially outward of the inspector body 14 by being disposed on the outer peripheral surface of the guide support plates 81 and 82 and thus the inspector body 14. As shown in FIG. 8, the protrusions 91 of the plurality of guide members 90 are arranged at intervals in the axial and circumferential directions of the inspector body 14.

[0057] As shown in FIG. 11, the protrusion 91 includes a rolling pedestal 93 and a rolling element 94. The rolling pedestal 93 is formed, for example, in the shape of a hexagonal bolt head that can be rotationally operated with a rotary tool. The threaded leg 92 is integrally connected to the bottom of the rolling pedestal 93.

[0058] On the outer end surface (the upper surface in FIG. 11) of the rolling pedestal 93 facing the outside in the radial direction of the inspector body 14, a spherical seat 93a is formed. The spherical seat 93a has a partially concave spherical shape that opens toward the outside in the radial direction of the inspector body 14. A spherical rolling element 94 is rotatably held in all directions in the spherical seat 93a. The rolling element 94 protrudes from the outer end surface of the rolling pedestal 93 and thus protrudes radially outward from the inspector body 14. The material of the rolling element 94 is preferably resin. Thereby, it is possible to prevent damage to the inner surface of the cylinder hole 3.

[0059] As shown in FIGS. 7 and 9, when the inspector 11D is inserted into the cylinder hole 3 for inspecting the inner surface of the cylinder hole 3, the rolling elements 94 are in rolling contact with the inner surface of the cylinder hole 3. Preferably, when each rolling element 94 of the movement guide 89 contacts the inner surface of the cylinder hole 3, the rotation axis L along the central axis of the inspector 11D coincides with the central axis C of the cylinder hole 3. As a result, the inspector 11D can move in the axial direction of the cylinder hole 3 and rotate in the circumferential direction of the cylinder hole 3 while always maintaining the state where the cylinder hole 3 and the central axes L and C are coincident. As a result, the inner surface inspection of the cylinder hole 3 can be accurately and smoothly performed over a wide range in the axial direction and the circumferential direction of the cylinder hole 3.

[0060] As shown in FIG. 7, the support member 21 is attached to the resin transport barrel 2 at a predetermined angle, and the rotating member 30 is angle-adjusted and fixed to the support member 21, so that it is possible to specify which angle in the circumferential direction of the cylinder hole 3 is being inspected, which is the same as in the first embodiment and the like.

[0061] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit thereof. For example, the present invention is also applicable to inner surface inspections such as measuring the inner diameter of the cylinder hole 2 when a new resin transport barrel is made. A shaft member that fits into the connecting holes 2b and 2d of the resin transport barrel 2 to position the support member may be provided integrally with the support member. The shaft member that is integral with the support member may protrude from the support member toward the resin transport barrel 2 side. As a modification of the first embodiment (FIGS. 1 to 4), a locking portion 43 may be integrally formed on the rotating member 30. Alternatively, the locking portion may be integrally formed or detachably provided on the support member, and a plurality of locking receiving portions may be provided at intervals in the circumferential direction of the rotating member. As a modification of the second embodiment (FIG. 5), the support member 51 may be formed in a gear shape including a plurality of locking receiving portions 55, and the rotating member 53 may have a locking portion 52. As a modification of the third embodiment (Fig. 6), the support member 61 may have a plurality of index holes 64, and the rotating member 63 may have an index plunger 70.

[0062] In the fourth embodiment (Figs. 7 to 11), the guide member 90 and thus the moving guide 89 may be in slidable contact with the inner surface of the cylinder hole 3. The number of guide support plates 81 and 82 that support the moving guide 89 in the inspection device body 14 may be only one or three or more. The plurality of protrusions 91 may be arranged so as to be separated from each other at least in the circumferential direction among the axial direction and the circumferential direction of the inspection device body 14.

Industrial Applicability

[0063] The present invention can be applied, for example, to the inspection of the inner surface of the cylinder hole of the resin transfer barrel of an injection molding machine or an extrusion molding machine.

Explanation of Signs

[0064] C Central axis L Rotation axis 1 Resin molding machine 2 Resin transfer barrel 2a Head side end face (end face) 2b Bolt hole (connection hole) 2d Pin hole (connection hole) 3 Cylinder hole 4 Screw (resin transfer mechanism) 7 Resin transfer head 8 Mold 9 Inspection device for resin molding machine 9B, 9C, 9D Inspection device for resin molding machine 10, 10D Inner surface inspection means 11, 11D Inspector 13 Inspection functional part 13a Laser displacement meter (optical displacement meter) 13b Prism 14 Inspector body 12 Shaft 20 Inspection jig 21 Support member 22 Shaft insertion hole 24 Index hole (locking receiving part) 25, 26 Engagement hole (engagement part) 30 Rotating member 34 Locking hole 40 Mounting bolt (shaft member) 41 Positioning pin (shaft member) 42 Angle fixing mechanism 43 Locking bolt (locking part) 50 Inspection jig for resin molding machine 51 Support member 52 Locking part 53 Rotating member 55 Valley part (locking receiving part) 56 Angle fixing mechanism 57 Shaft member 60 Inspection jig for resin molding machine 61 Support member 63 Rotating member 64 Index hole (locking receiving part) 65 Angle fixing mechanism 70 Index plunger 72 Pin (locking part) 81, 82 Guide support plate 83 Threaded hole 89 Moving guide 90 Guide member 91 Protrusion 92 Leg with screw 93 Rolling pedestal 93a Spherical seat 94 Rolling element

Claims

1. An inspection jig for a resin molding machine that supports an inspector for performing an inner surface inspection including measuring the inner diameter of a cylinder hole formed in a resin transfer barrel of the resin molding machine, having a shaft insertion hole through which a shaft extending from the inspector passes, and a support member positioned and attached to an end face of the resin transfer barrel, a rotating member provided on the shaft and attached to the support member so as to be angle-adjustable about a rotation axis along the shaft, and an angle fixing mechanism for fixing the angle of the rotating member with respect to the support member, characterized by comprising the above.

2. A plurality of connection holes for connection to a resin transfer head or a mold are formed in the end face, The inspection jig for a resin molding machine according to claim 1, wherein the support member has engagement portions with at least two shaft members, and each of the shaft members can be fitted into a corresponding connection hole.

3. The inspection jig for a resin molding machine according to claim 2, wherein the relative positional relationship between the connection hole and the central axis of the cylinder hole, and the relative positional relationship between the engagement portion and the rotation axis in a state where the rotating member is attached to the support member are in agreement with each other.

4. The inspection jig for a resin molding machine according to claim 1, wherein the rotation axis coincides with the central axis of the cylinder hole.

5. The angle fixing mechanism has a locking portion integrally formed or detachably provided on one of the support member and the rotating member, and a plurality of locking receivers provided at intervals in the circumferential direction of the other of the support member and the rotating member, The inspection jig for a resin molding machine according to claim 1, wherein one locking receiver selected according to the angle of the rotating member and the locking portion are locked to each other.

6. An inspector for performing an inner surface inspection including measuring the inner diameter of a cylinder hole formed in a resin transfer barrel of a resin molding machine, an inspection jig for supporting the inspector, comprising, wherein the inspection jig has a shaft insertion hole through which a shaft extending from the inspector passes, and a support member positioned and attached to an end face of the resin transfer barrel, a rotating member provided on the shaft and attached to the support member so as to be angle-adjustable about a rotation axis along the shaft, and an angle fixing mechanism for fixing the angle of the rotating member with respect to the support member, characterized by including the above.

7. The inspector includes an inspector body that holds an inspection functional portion for performing the inner surface inspection, The resin molding machine inspection device according to claim 6, wherein a moving guide that is in rolling contact or sliding contact with the inner surface of the cylinder hole is provided on the inspection device body.

8. The resin molding machine inspection device according to claim 7, wherein the moving guide has a plurality of protrusions protruding from the outer peripheral surface of the inspection device body, and these protrusions are arranged at least in the circumferential direction away from each other in the axial direction and the circumferential direction of the inspection device body.

9. The resin molding machine inspection device according to claim 8, wherein the rotation axis coincides with the central axis of the cylinder hole in a state where each protrusion separated in the circumferential direction is in contact with the inner surface of the cylinder hole.

10. The resin molding machine inspection device according to claim 8, wherein the protrusion includes a spherical seat having a partially concave spherical shape that opens outward in the radial direction of the inspection device body, and a spherical rolling element rotatably held on the spherical seat.

11. The resin molding machine inspection device according to any one of claims 7 to 10, wherein the shaft is connected to the inspection device body.

Images