JP3196093U - Covered injection molding structure of linear slide - Google Patents

Abstract

A linear slide covering injection molding structure capable of preventing a flash generated after injection molding is provided. A coated injection molding structure integrally has a guide structure 4 used for a guide rotating member holder on a metal member 1. The metal member has a rail groove 11 that matches the linear slide rail, and has guide structure attachment portions that extend to both ends of the metal member on both side walls of the rail groove. Two reflux holes communicating with both ends are provided on both sides of the rail groove, respectively, and a reflux guide structure 6 and an unloaded rail 17 formed of an engineering plastic material are formed in the inner hole of the reflux hole. The reflux guide structure communicates with both ends of the metal member, and counterbore holes 16 are formed on the sides of the reflux holes of the metal member. Accept part of engineering plastic material to form. [Selection] Figure 4

Description

  The present invention relates to an injection molding structure, and more particularly, to a coated injection molding structure of a linear slide.

Like the roller linear slide disclosed in Taiwan Utility Model Registration No. M437400, the roller linear slide uses a cylindrical rotating member for relative movement between the linear slide and the linear slide rail, and thereby linear Move the slide along the linear slide rail.
A more preferable load capacity can be obtained by the columnar rotating member, and it is particularly adapted to equipment that requires heavy loads.
Further, as disclosed in Taiwan Utility Model Registration No. M334223 and Taiwan Utility Model Registration No. M371228, a cylindrical rotating member (roller) is assembled to a plastic chain belt. The rail groove and the no-load rails (circulation holes) provided on both sides of the rail groove are looped along the circulators at both ends of the load rail, the no-load rail and the linear slide core. By rotating, the linear slide can move in a state of low frictional force.

In order to rotate a chain belt with a rotating member (or the rotating member itself) along the load rail and unloaded rail, the roller linear slide has a guide structure (or loop) formed of plastic on the loaded rail and unloaded rail. Device).
In the known technical field, the above guide structure usually adopts a mounting structure and manufacturing method, and as disclosed in Taiwan Utility Model Registration No. M334893 and Taiwan Utility Model Registration No. M473454, Each component member and structure of the guide structure that is injection molded from the mold is used and attached to the load rail and unload rail of the metal member of the linear slide.
However, when the plastic member is injection molded and then attached to the metal member of the linear slide, inventory management becomes complicated and labor is required. In addition, the mounting quality and accuracy of the product are greatly influenced by the accumulated tolerance of each element member.

Taiwan Utility Model Registration No. M437400 Taiwan Utility Model Registration No. M334223 Taiwan Utility Model Registration No. M371228 Taiwan Utility Model Registration No. M334893 Taiwan Utility Model Registration No. M473454

  The main purpose of the present invention is to form a guide structure that communicates with both ends only on both side walls of the rail groove of the linear slide core metal member by the structural design that covers and injection molds from within the mold of the linear slide core metal member. An object of the present invention is to provide a coated injection molding structure of a linear slide core in which a mold mating surface between a metal member of a linear slide core and a cavity in a mold is formed, and the object of preventing flash generated after injection molding is achieved.

  The secondary purpose of the present invention is to design the mounting cylinder part to be fixed to the counterbore holes at both ends of the chain metal member by designing the counterbore holes at both ends of the metal member at the same time. An object of the present invention is to provide a coated injection molding structure of a linear slide core, in which a roller pillar circulator is attached to both ends of a metal member and chained to combine the linear slide core.

  In order to achieve the above object, the present invention provides a coated injection molding structure of a linear slide, the feature of which includes a metal member of the linear slide, and the metal member has a rail groove that matches the linear slide rail. The rail grooves are straight grooves communicating with both ends of the metal member, and three sets of guide structure attaching portions parallel to each other and the three sets of guide structure attaching portions are provided on both side walls of the rail grooves. Two load rails formed between the guide structure attachment portions and the load rails extend to both ends of the metal member, and the guide structure attachment portions are made of engineering plastic material. The guide structure used for the guide rotating member holder is formed, and the first mold mating surface used for cavity mold clamping is formed on both sides of each guide structure attaching portion. , Each of said first Katagomen is extends to both ends of the metal member. Thereby, when it carries out so that it may carry out covering injection molding from the inside of a mold, a 1st cavity can be put in a rail groove, and by design of a guide structure molding part on the both sides of the 1st cavity, and the 2nd mold joint surface, The guide structure forming portion of the first cavity corresponds to the guide structure attaching portion, and corresponds to the second mold mating surface and the first mold mating surface of the rail groove of the metal member described above. And a gap of 0.02 mm to 0.04 mm is maintained between the second mold mating surface and the first mold mating surface, thus pouring molten engineering plastic material into the injection mold hole. It is possible to form the guide structure described above in the guide structure molding portion by coating the metal member with an engineering plastic material. Two reflux holes communicating with both ends are provided on both sides of the rail groove of the metal member, and the inner holes of the reflux holes are formed at the same time with a reflux guide structure formed of the engineering plastic material and no load. The reflux guide structure and the unloaded rail are communicated with both ends of the metal member using a rail. Further, a counterbore hole is formed on the hole side of the reflux hole of the metal member, and the engineering plastic material is similarly melt-injected into the counterbore hole, and the chain of circulators is positioned at both ends of the metal member. An attachment tube portion used for attachment is integrally formed, and the attachment tube portion is aligned with the counterbore hole.

  The linear slide core covering injection molding structure provided by the present invention includes a guide structure adhering portion and a first die mating surface on both side walls of a rail groove of a metal member and a guide structure molding portion and a second die mating portion of a first cavity. Depending on the design of the surface, a gap of 0.02 mm to 0.04 mm is maintained between the first mold mating surface and the second mold mating surface, so that the rail groove of the metal member fits into the first cavity in the mold. After being put together, a gap of 0.02 mm to 0.04 mm between the first mold mating surface and the second mold mating surface is used to prevent the molten engineering plastic material from overflowing, The occurrence of burrs can be avoided, so that the present invention achieves the effect of improving production efficiency and reducing costs by achieving a guide structure that is injection-molded on both side wall portions of the rail groove. it can. Further, according to the present invention, the mounting cylinder part is integrally formed by designing the counterbore holes at both ends of the metal member, and the screw screw is made using the counterbore hole of the metal member in addition to the chaining of the circulator to the mounting cylinder part. It is possible to prevent the mounting tube portion from being torn due to the incoming tension.

The cross-sectional view which shows a metal member and the core arrange | positioned in a metal mold | die. The longitudinal cross-sectional view of FIG. The cross-sectional schematic diagram which shows the injection molding aspect of an engineering plastic material. The fragmentary sectional view of a linear slide. The perspective view of the metal member of a linear slide. The figure which expands and shows a part by cross-sectioning a linear slide. Sectional drawing of a linear slide. The perspective view of a linear slide. The disassembled perspective view which shows the metal member and injection molding site | part of a linear slide. The perspective view which shows the aspect which attaches a circulator to a linear slide. The perspective view which shows the other aspect of a linear slide.

Referring to FIGS. 1 and 2 together, the present invention provides a linear slide covering injection molding structure, and more specifically, a roller linear slide having a chain belt loop guide structure.
According to the structure design to cover injection molding, as a preferred implementation method of injection molding,
The metal member 1 of the linear slide is installed in the cavity 21 of the injection mold 2, and the rail groove 11 of the metal member 1 is stably fixed and supported by the first core 3 in the cavity 21,
After clamping the injection mold 2, molten engineering plastic material 5 (see FIG. 3) is injected into the cavity 21 of the injection mold 2,
On both side walls of the rail groove 11 of the metal member 1, a plurality of roller chain belt guide structures 4 (see FIGS. 4 to 7) and a load rail 12 positioned between the guide structures 4 are formed.

As shown in FIGS. 5 and 6, the metal member 1 is a trapezoidal block body or a rectangular block body (see FIG. 11) and is used as a linear slide stacking body.
A rail groove 11 that matches the linear slide rail is machined in the center of the bottom surface of the metal member 1, and the rail groove 11 is configured as a straight groove that communicates with both ends of the metal member 1. Three sets of guide structure adhering portions 13 are arranged in parallel.
The guide structure adhering portion 13 may be planar or arched in cross section, and may be a guide structure 4 in which the engineering plastic material 5 to be applied is desirable.
Each guide structure attachment portion 13 extends along the rail groove 11 to both ends of the metal member 1.
On both upper and lower sides of the guide structure attaching portion 13, there are first type mating surfaces 14.
The first mold mating surface 14 is preferably a flat surface extending to both ends of the metal member 1 along the rail groove 11.

In general, linear slides are used in heavy load situations.
In this case, two rollers (belts) are provided on both side walls of the rail groove 11 respectively.
For this reason, as shown in FIGS. 5 and 6, three guide structure attachment portions 13 are disposed on both side walls of the rail groove 11.
That is, the first guide structure attachment portion 13A adjacent to the side wall portion of the opening end of the rail groove 11,
A second guide structure adhering portion 13B adjacent to the side wall portion of the bottom end of the rail groove 11,
A third guide structure attaching portion 13C located at a side wall portion between the first guide structure attaching portion 13A and the second guide structure attaching portion 13B, and thus, three sets of guides are provided in three attaching portions. The structure 4 and the load rail 12 located between the guide structures 4 are formed.
It should be noted that both sides of the first guide structure attaching part 13A and the second guide structure attaching part 13B are respectively connected to the first mold mating surface 14, and both sides of the third guide structure attaching part 13C are the first guide. The structure adhering portion 13A and the first guide surface 14 on one side of the second guide structure adhering portion 13B are connected to each other.

As shown in FIGS. 1, 2 and 3, the first core 3 is installed in the cavity 21 of the injection mold 2.
When the mold 2 is closed, the first core 3 corresponds to the rail groove 11 of the metal member 1.
The first core 3 is engaged with the guide structure forming portions 31 corresponding to the guide structure forming portions 31 of the guide structure attaching portions 13 on both sides of the first core 3 and the first mold mating surfaces 14 correspondingly. A mold mating surface 32.
The guide structure forming portion 31 is recessed on both sides of the first core 3 and extends to the plastic forming spaces at both ends.
When molten engineering plastic material 5 is injected into guide structure forming portion 31 (see FIG. 3), guide structure 4 (see FIGS. 4 and 6) is formed.
The second mold mating surface 32 corresponds to the first mold mating surface 14, and there is a gap of 0.02 mm to 0.04 mm between each other.
Due to this gap, the rail groove 11 of the metal member 1 easily enters the first core 3 in the axial direction, and the metal member 1 is taken out in the reverse direction after injection molding.
More specifically, three guide structure forming portions 31 are provided on both sides of the first core 3, and the guide structure forming portions 31 respectively include the first, second, and third guide structures. It corresponds to the adhering portions 13A, 13B, and 13C.
The second mold mating surfaces 32 are connected to both sides of the guide structure forming portion 31, respectively.

The metal part member 1 of the linear slide core is placed in the mold hole 21 of the injection mold 2 according to the above method and structure (see FIGS. 1 and 2), and the rail groove 11 and the first core 3 in the cavity 21 are connected. After the phase fitting, a relative mold clamping surface in which the first mold mating surface 14 of the metal member 1 and the second mold mating surface 32 of the first core 3 are close to each other is formed.
After the cavity 21 of the injection mold 2 is completely closed, the cavity 21 of the injection mold 2 communicates with both ends of the guide structure molding portion 31.
Thereafter, the molten engineering plastic material 5 is injected into the cavity 21 and the guide structure molding portion 31 (see FIG. 3) through an injection machine.
The molten engineering plastic material 5 is injected into the allowable play (0.02 mm to 0.04 mm) of the first mold mating surface 14 and the second mold mating surface 32 between the metal member 1 and the first cavity 3. Therefore, the molten engineering plastic material 5 simply forms the three guide structures 4 communicating with both ends along the guide structure attaching portions 13 on both side walls of the rail groove 11 of the metal member 1, This is used to guide the roller chain belt, i.e. the roller is rotated on the load rail 12.

Next, as shown in FIGS. 2, 5, and 6, the metal member 1 is positioned on both sides of the above-described metal member 1, two reflux holes 15 communicating with both ends, and sides of the reflux holes 15. The counterbore 16 is processed, thereby forming the no-load rail 17 and the reflux guide structure 6 in the reflux hole 15. The reflux guide structure 6 is separately attached to both ends of the metal member 1 by a completed circulator. It communicates with the load rail 12.
The counterbore 16 described above is adapted to receive a portion of the engineering plastic material 5 that forms the mounting cylinder 7 on the metal portion 1 and is made of an engineer plastic material that is injection molded in an unloaded track 17. A part is integrated and fits into the counterbore 16.
The formation of the reflux guide structure 6 on the unloaded rail 17 is shown in FIGS.
A second core 8 is attached to the mold 2. When the mold is clamped, a reflux hole 15 is provided around each second core 8. The second core 8 communicates with both ends of the metal member 1. 8 and the inner wall of the reflux hole 15 are retained, and the reflux guide structure molded portion 18 is similarly communicated with the mold hole 21 at both ends. When the material 5 is injected into the reflux guide structure molding portion 18, the unloaded rail 17 and the reflux guide structure 6 (see FIG. 4) are molded.

As shown in FIGS. 8 and 9, the guide structure 4 and the reflux guide structure 6 which are implemented according to the above method and structure and are injection-molded from a mold communicate with both ends of the metal member 1.
More preferably, end blocks 9 are injection-molded on both sides of both ends of the metal member 1, and the known circulator 10 is coupled to the end block 9 (see FIG. 10) by the mounting cylinder portion 7.
Therefore, as shown in FIG. 1, in the aspect in which the metal member 1 of the present invention is placed in the mold 2, the end block molding portion 22 and the mounting cylinder are respectively provided at both ends of the metal member 1 corresponding to the mold hole. A structure such as a part molding part 23 is provided, whereby the engineering plastic material 5 is injected into the guide structure molding part 31, the end block molding part 22 and the mounting cylinder part molding part 23, and the guide structure 4 and the metal The attachment cylinder part 7 and the end block 9 which are located in the both ends of the member 1 are formed.

The end block 9 is connected to both ends of the flat base portion 91 joined to both end surfaces of the metal member 1, a semicircular portion 92 shaped to protrude from the end surface at both ends of the metal member 1, and both ends of the circular portion 92. Loop groove 93 disposed so as to be continuous between one load rail and one unloaded rail 17, whereby the circulator 10 connects the loaded rail 12 and the unloaded rail 17. To provide a passageway.
The integrated structural design of the end block 9 has a smooth operation surface that is optimal when passing through this portion by rotating the roller, and can eliminate noise caused by gaps between the element members.

  As shown in FIGS. 6 and 9, the metal member 1 of the present invention is further provided between the first guide structure attaching portion 13A and the second guide structure attaching portion 13B, or two first guide structure attaching portions 13A. When the through hole 19 is processed in advance between the two reflux holes 15 and injection molding is performed, the engineering plastic material 5 is injected into the through hole 19 so that the two guide structures 4 are adjacent to each other. The guide structure 4 is stabilized on both side walls of the rail groove 11.

The linear slide cover injection molding structure of the present invention includes guide structure attachment portions 13 and first mold mating surfaces 14 on both side walls of the rail groove 11 of the metal member 1, and guide structure molding portions 31 of the first core 3 and the first structure 3. Due to the design of the mold 2 mating surface 32, a gap of 0.02 mm to 0.04 mm is maintained between the first mold mating surface 14 and the second mold mating surface 32, and thus the rail groove 11 of the metal member 1 is injected. It fits smoothly into the first core 3 of the mold 2 and melts only by holding a gap of 0.02 mm to 0.04 mm between the first mold mating surface 14 and the second mold mating surface 32. The engineering plastic material 5 can be prevented from overflowing, and burrs can be prevented from occurring in the guide structure 4 after injection molding.
Accordingly, in the present invention, the geometric accuracy of the first mold mating surface 14 of the metal member 1 needs to be controlled by an extremely excellent working forming method. A gap of 0.02 mm to 0.04 mm is maintained between the two. Therefore, the inventor of the present invention, based on his skilled polishing experience, the first mold mating surface 14 of the metal member 1 is subjected to polishing molding by using the same grinding wheel, so that the first mold mating surface 14 It is possible to accurately control the geometric dimension, thereby increasing the acceptance rate when molding the plastic element on the metal member 1.
Therefore, the present invention adopts an injection molding method, and the guide structure 4 that is injection-molded on both side wall portions of the rail groove 11 can realize an effect of improving the production efficiency and reducing the cost.

  In summary, the linear injection-coated injection molding structure of the present invention certainly has practicality and creativity, the operation of its technical means is also innovative, and the effect perfectly matches the design purpose. There is no doubt, and it is clear that it is a reasonable advance.

1: Metal member 11: Rail groove 12: Load rail 13: Guide structure attaching part 13A: First guide structure attaching part 13B: Second guide structure attaching part 13C: Third guide structure attaching part 14: First mold interface 15 : Reflux hole 16: counterbore hole 17: unloaded rail 18: reflux guide structure molding part 19: through hole 2: mold 21: mold hole 22: end block molding part 23: mounting cylinder part molding part 3: first Core 31: Guide structure molding part 32: Second mold mating surface 4: Guide structure 5: Engineering plastic material 6: Recirculation guide structure 7: Mounting cylinder part 8: Second core 9: End block 91: Flat base part 92: Half Circular part 93: Loop groove 10: Circulator

Claims (4)

It is a covered injection molding structure of a linear slide core,
The metal member of the linear slide core has a rail groove that matches the linear slide rail, and the rail groove is a straight groove that communicates with both ends of the metal member, and both side walls of the rail groove are parallel to each other. Three sets of guide structure attaching portions and two load rails formed between the three sets of guide structure attaching portions are disposed, and each of the guide structure attaching portions and each of the load rails is formed of the metal Each guide structure attachment portion extends to both ends of the member, and a guide structure used for a guide rotating member holder is formed of an engineering plastic material. Both sides of each guide structure attachment portion are used for cavity clamping. First mold mating surfaces are formed, and each of the first mold mating surfaces extends to both ends of the metal member,
The two reflux holes communicating with both ends are provided on both sides of the rail groove of the metal member, respectively, and an inner hole of the reflux hole includes a reflux guide structure formed of the engineering plastic material, A load rail is formed, the reflux guide structure communicates with both ends of the metal member, the counterbore hole is formed on a side of the reflux hole of the metal member, and the counterbore hole is A linear injection-coated injection molding structure characterized in that a part of an engineering plastic material for forming a mounting cylinder portion for attaching a circulator to both ends of a metal member is received. In the covering injection molding structure of the linear slide according to claim 1,
The three sets of guide structure adhering portions include a first guide structure adhering portion adjacent to a side wall portion of the opening end of the rail groove, a second guide structure attaching portion adjacent to a side wall portion of the bottom end of the rail groove, A third guide structure attachment portion located at a side wall portion between the first guide structure attachment portion and the second guide structure attachment portion, and the first guide structure attachment portion and the second guide structure attachment portion. Both sides are respectively connected to the first mold mating surface, and both sides of the third guide structure adhering portion are connected to the first mold mating surface on one side of the first guide structure adhering portion and the second guide structure adhering portion. Covered injection molding structure of linear slide characterized by being connected to each other. In the covered injection molding structure of the linear slide according to claim 2,
Covering injection of the linear slide, wherein the engineering plastic material is inserted between the first guide structure attaching portion and the second guide structure attaching portion or the reflux hole of the metal member. Molded structure. In the covered injection molding structure of the linear slide according to claim 3,
At both ends of the metal member, an end block integrally formed with each of the guide structure, the reflux guide structure, and the mounting tube portion is provided, and the end block is a flat base joined to both end surfaces of the metal member. And both ends of the arcuate surface of the semicircular part are connected to the load rail and the no-load rail, and a loop is formed. A coated injection molding structure of a linear slide, characterized by providing a groove.