Turntable adjustment mechanism, injection molding machine and adjustment method for the turntable of an injection molding machine

Abstract

The present invention discloses a turntable adjustment mechanism, which includes at least a pair of tightening devices mounted on a bottom plate and arranged on the outer side of the circumference of the turntable. Each pair of tightening devices is symmetrically arranged relative to the rotation center of the turntable. The tightening device includes a lifting member and an adjusting member. The lifting member is slidably and adjustably mounted on the bottom plate, and the lifting member abuts against the outer end of the outer edge of the turntable. The adjusting member is mounted on the bottom plate and arranged in a linkage manner with the lifting member. The adjusting member under operation drives the lifting member to slide and feed towards the center of the turntable adjustment mechanism, so that the lifting member adjusts the inclination state of the turntable by pushing the outer edge of the turntable. The turntable adjustment mechanism of the present invention can prevent the turntable from dropping and tilting. In addition, the present invention also discloses an injection molding machine and an adjustment method for the turntable of the injection molding machine.

Description

Technical Field

[0001] The present invention relates to the field of injection molding machines, and particularly to a turntable adjustment mechanism, an injection molding machine, and an adjustment method for an injection molding machine turntable. Background Art

[0002] The mold of a rotary two-color injection molding machine is installed on its turntable. The rotation of the turntable drives the rotation of the mold, thereby realizing the exchange and displacement of the mold cavity or the mold core, and producing two-color or multi-color products. During the working process, the smoothness of the mold rotation and the smoothness of the mold opening and closing are important factors affecting the production efficiency and quality of two-color injection molding. For a horizontal two-color injection molding machine, due to the structural characteristics of the horizontal two-color injection molding machine, the turntable will sag and tilt due to its own gravity and the load gravity of the moving mold, resulting in rubbing when the male mold and the female mold are closed, and even damaging the mold core and the mold cavity, or causing excessive local frictional resistance of the turntable and unable to rotate.

[0003] Therefore, there is an urgent need for a turntable adjustment mechanism, an injection molding machine, and an adjustment method for an injection molding machine turntable to overcome the above defects. Summary of the Invention

[0004] The purpose of the present invention is to provide a turntable adjustment mechanism that prevents the turntable from sagging and tilting.

[0005] Another purpose of the present invention is to provide an injection molding machine that prevents the turntable from sagging and tilting.

[0006] Another purpose of the present invention is to provide an adjustment method for an injection molding machine turntable, which adjusts the tilt state of the turntable to make the parallelism between the end face of the turntable and the end face of the fixed template meet the requirements, and makes the circular runout value of the turntable itself meet the requirements.

[0007] To achieve the above purposes, the turntable adjustment mechanism of the present invention is applied to an injection molding machine. The injection molding machine includes a turntable mechanism, and the turntable mechanism includes a bottom plate and a turntable rotatably installed on the bottom plate. The turntable adjustment mechanism includes at least a pair of jacking devices installed on the bottom plate and arranged outside the circumference of the turntable. Each pair of the jacking devices is symmetrically arranged relative to the rotation center of the turntable. The jacking device includes a jacking member and an adjusting member. The jacking member is slidably and adjustably installed on the bottom plate. The jacking member abuts against the outer end of the outer edge of the turntable. The adjusting member is installed on the bottom plate and is arranged in a linkage manner with the jacking member. The adjusting member under operation drives the jacking member to slide and feed towards the center of the turntable adjustment mechanism, so that the jacking member adjusts the tilt state of the turntable by pushing against the outer edge of the turntable.

[0008] Preferably, the pressing device further includes a sliding mounting member which is slidably mounted on the bottom plate, the lifting member is centrally rotatably mounted on the sliding mounting member, the first end of the adjusting member abuts against the sliding mounting member, and the operating adjusting member pushes the sliding mounting member to slide.

[0009] Preferably, the bottom plate is provided with a supporting member extending along the sliding direction of the sliding mounting member, the supporting member is located beside the turntable, the turntable adjusting mechanism is arranged between the supporting member and the turntable, and the sliding mounting member abuts against the supporting member.

[0010] Preferably, a fixing member is mounted on one side of the bottom plate where the sliding mounting member is located, the adjusting member is a stud structure, the adjusting member is screwed to the fixing member, a locking nut is sleeved on the adjusting member, the adjusting member is locked to the fixing member by the locking nut, and a locking screw for locking the sliding mounting member and the fixing member together is provided on the fixing member.

[0011] Preferably, the sliding mounting member is provided with an operation notch, the first end of the adjusting member is arranged in the operation notch, and a docking structure for connecting an external operating member is provided on the adjusting member, and the docking structure is an external hexagonal structure or a hole structure regularly distributed on the adjusting member.

[0012] Preferably, the sliding mounting member is locked to the bottom plate by a locking screw, and the two sliding mounting members in the same pair of pressing devices have at least a first adjustment limit state of approaching each other and a second adjustment limit state of moving away from each other.

[0013] Preferably, a waist-shaped hole extending along the sliding direction of the sliding mounting member is formed in the sliding mounting member, the locking screw passes through the waist-shaped hole and is screwed to the bottom plate, and the side surface of the sliding mounting member close to the turntable is an arc surface structure, and the arc surface structure faces the inner end of the outer edge of the turntable.

[0014] Preferably, the turntable adjusting mechanism includes two pairs of pressing devices, the two pairs of pressing devices include a first pressing device, a second pressing device, a third pressing device and a fourth pressing device, the first pressing device and the second pressing device form a pair of pressing devices, the third pressing device and the fourth pressing device form a pair of pressing devices, the third pressing device and the fourth pressing device are arranged between the first pressing device and the second pressing device, the second end of the adjusting member of the third pressing device is screwed to the sliding mounting member of the first pressing device, and the second end of the adjusting member of the fourth pressing device is screwed to the sliding mounting member of the second pressing device.

[0015] To achieve the above-mentioned another object, the injection molding machine of the present invention includes a turntable mechanism, a fixed platen and the above-mentioned turntable adjustment mechanism. The turntable mechanism includes a bottom plate and a turntable rotatably mounted on the bottom plate. The turntable adjustment mechanism is mounted on the bottom plate, and the lifting member abuts against the outer end of the outer edge of the turntable.

[0016] Preferably, the outer edge of the turntable includes a first outer edge structure and a second outer edge structure arranged in a stepped structure. The lifting member abuts against the first outer edge structure, and a gear structure is provided on the second outer edge structure of the turntable.

[0017] To achieve the above-mentioned yet another object, the method for adjusting the turntable of the injection molding machine of the present invention includes the following steps:

[0018] Step S1: Mount two dial indicators symmetrically arranged along the rotation center of the turntable on the first outer edge structure of the turntable;

[0019] Step S2: Loosen the locking screw, the locking nut and the anti-loosening screw;

[0020] Step S3: Use a wrench to clamp onto the hexagonal structure on the outer side of the jacking stud of the first jacking device, and operate the wrench to turn the jacking stud. The jacking stud pushes the sliding mounting member to slide forward. The sliding mounting member that slides forward drives the lifting member to lift the turntable upward; Use a wrench to clamp onto the hexagonal structure on the outer side of the jacking stud of the second jacking device, and operate the wrench to turn the jacking stud of the second jacking device. The jacking stud pushes the sliding mounting member to slide forward. The sliding mounting member that slides forward drives the lifting member to lift the turntable upward; During this process, turn the jacking stud of the first jacking device and the jacking stud of the second jacking device equally and alternately multiple times, and keep the pointer change amounts of the two dial indicators consistent;

[0021] Step S4: Tighten the two anti-loosening screws;

[0022] Step S5: Detect the parallelism value A between the end face of the turntable and the end face of the fixed platen to make it meet the preset standard value; If not, loosen the locking screw and repeat steps S3 - S5 until the parallelism value A between the end face of the turntable and the end face of the fixed platen meets the preset standard value;

[0023] Step S6: Drive the turntable to rotate 180° clockwise and counterclockwise slowly, and rotate 2 - 3 times each, and observe that the value B of the circular runout of the pointer change of one of the dial indicators does not exceed the preset specified value; If not qualified, repeat steps S3 - S6 until the value B of the circular runout meets the preset specified value; If qualified, end the adjustment, tighten the locking screw, the locking nut and the anti-loosening screw, and remove the dial indicator and the wrench.

[0024] Preferably, for an injection molding machine including a third tightening device and a fourth tightening device, it further includes step 50 between step S4 and step S5. Step 50: Insert a crowbar into the hole structure of the knurled stud of the third tightening device, operate the crowbar to pry and twist the knurled stud to rotate, the knurled stud screws out of the sliding mounting part of the first tightening device while pushing the sliding mounting part of the third tightening device to slide and feed, and the sliding mounting part that slides and feeds drives the lifting part to lift the turntable upward; insert a crowbar into the hole structure of the knurled stud of the fourth tightening device, operate the crowbar to pry and twist the knurled stud to rotate, the knurled stud screws out of the sliding mounting part of the second tightening device while pushing the sliding mounting part of the fourth tightening device to slide and feed, and the sliding mounting part that slides and feeds drives the lifting part to lift the turntable upward; during this process, the knurled studs of the third tightening device and the fourth tightening device are alternately turned multiple times in equal amounts, and the pointer change amounts of the two dial indicators are kept consistent.

[0025] Compared with the prior art, the turntable adjustment mechanism of the present invention includes at least a pair of tightening devices mounted on the bottom plate and arranged on the outer side of the circumference of the turntable. Each pair of tightening devices is symmetrically arranged relative to the rotation center of the turntable. The tightening device includes a lifting part and an adjusting part, and the lifting part is slidably and adjustably mounted on the bottom plate. The lifting part abuts against the outer end of the outer edge of the turntable, and the adjusting part is mounted on the bottom plate and is arranged in linkage with the lifting part. The adjusting part under operation drives the lifting part to slide and feed towards the center of the turntable adjustment mechanism, so that the lifting part adjusts the inclination state of the turntable by pushing against the outer edge of the turntable. Therefore, by adjusting the inclination state of the turntable, the problem of the turntable sagging and skewing due to gravity can be solved, so that the parallelism between the end face of the turntable and the end face of the fixed template reaches the required specified value, ensuring that there is no rubbing when the male mold and the female mold are closed, preventing damage to the mold, and ensuring smooth rotation of the turntable.

[0026] It can be understood that since the injection molding machine of the present invention includes a turntable mechanism, a fixed template and the above-mentioned turntable adjustment mechanism, the turntable mechanism includes a bottom plate and a turntable rotatably mounted on the bottom plate. By operating the turntable adjustment mechanism, the problem of the turntable sagging and skewing due to gravity can be solved, so that the parallelism between the end face of the turntable and the end face of the fixed template reaches the required specified value, ensuring that there is no rubbing when the male mold and the female mold are closed, preventing damage to the mold, and ensuring smooth rotation of the turntable.

[0027] In addition, by using the adjustment method of the turntable of the injection molding machine of the present invention, the turntable can be adjusted to meet the requirements, so that the parallelism between the end face of the turntable and the end face of the fixed template and the index parameters of the turntable itself meet the requirements. Description of the Drawings

[0028] Figure 1 is the front view of the injection molding machine according to the first embodiment of the present invention.

[0029] Figure 2 is Figure 1Partial structure diagram at position H in the [Chinese term].

[0030] Figure 3 It is a planar structure cross-sectional view of the overhead lifting part, bearing, and bottom plate.

[0031] Figure 4 It is a planar structure cross-sectional view of the fixing part and the bottom plate.

[0032] Figure 5 It is a schematic structural diagram when measuring the parallelism between the end face of the measuring turntable and the end face of the fixed template.

[0033] Figure 6 It is a schematic diagram of the operation process of the lifting part pushing the turntable upward to adjust the tilt state of the turntable.

[0034] Figure 7 It is the front view of the injection molding machine according to the second embodiment of the present invention.

[0035] Figure 8 It is the three-dimensional exploded structure diagram of the turntable adjustment mechanism according to the second embodiment of the present invention.

[0036] Figure 9 It is a partial three-dimensional structure diagram when the turntable adjustment mechanism according to the second embodiment of the present invention is installed on the bottom plate and cooperates with the turntable. Specific embodiments

[0037] In order to explain in detail the technical content and structural features of the present invention, the following further description is made in conjunction with the embodiments and with reference to the drawings.

[0038] As Figure 1 , Figure 2 and Figure 5 shown, the injection molding machine 100 of the present invention includes a turntable mechanism 10, a fixed template 20, and a turntable adjustment mechanism 30. The turntable mechanism 10 includes a bottom plate 11 and a turntable 12 rotatably mounted on the bottom plate 11, and the turntable adjustment mechanism 30 is mounted on the bottom plate 11. One of the male mold or the female mold is mounted on the turntable 12, and the other of the male mold or the female mold is mounted on the fixed template 20. When the male mold and the female mold are closed, a cavity for producing products is formed, and the male mold and the female mold are not shown in the figure. When the parallelism between the end face of the turntable 12 and the end face of the fixed template 20 meets the preset standard value, the male mold and the female mold are naturally arranged opposite to each other, and there will be no collision or rubbing when they are clamped. In this embodiment, the injection molding machine 100 is a horizontal injection molding machine, and the turntable adjustment mechanism 30 is located below the turntable 12, but it is not limited thereto. According to actual needs, the turntable adjustment mechanism 30 can be relatively arranged in different orientations of the turntable 12.

[0039] As Figure 1 , Figure 2 and Figure 3As shown in the figure, the turntable adjustment mechanism 30 includes a pair of jacking devices 31 mounted on the bottom plate 11 and disposed on the outer side of the circumference of the turntable 12. Each pair of jacking devices 31 is symmetrically arranged with respect to the rotation center of the turntable 12. The jacking device 31 includes a jacking member 311 and an adjusting member 312. The jacking member 311 is slidably and adjustably mounted on the bottom plate 11. The jacking member 311 abuts against the outer end of the outer edge of the turntable 12. The adjusting member 312 is mounted on the bottom plate 11 and is arranged in a linkage manner with the jacking member 311. The adjusting member 312 under operation drives the jacking member 311 to slide and feed towards the center of the turntable adjustment mechanism 30, so that the jacking member 311 adjusts the inclination state of the turntable 12 by pushing the outer edge of the turntable 12. Therefore, by adjusting the inclination state of the turntable 12, the problem that the turntable 12 sags and skews due to gravity can be solved, so that the parallelism between the end face of the turntable 12 and the end face of the fixed template 20 reaches the specified value, ensuring that there is no collision and friction when the male mold and the female mold are closed, preventing damage to the mold, and ensuring the smooth rotation of the turntable 12.

[0040] It should be noted that the center of the turntable adjustment mechanism 30 is the symmetric center of a pair of jacking devices 31.

[0041] It should be noted that as Figure 3 and Figure 6 shown in the figure, taking the midline in the height direction of the turntable 12 as the standard, the part to the right of the midline is the outer end of the outer edge of the turntable 12, and the part to the left of the midline is the inner end of the outer edge of the turntable 12. Preferably, the outer edge of the turntable 12 includes a first outer edge structure 121 and a second outer edge structure 122 arranged in a stepped structure. That is to say, the outer end of the outer edge of the turntable 12 is set as the first outer edge structure 121, and the inner end of the outer edge of the turntable 12 is set as the second outer edge structure 122, but it is not limited thereto. The jacking member 311 abuts against the first outer edge structure 121 of the turntable 12.

[0042] As Figures 1 to 3 shown in the figure, the jacking member 311 is arranged to rotate around the center. In this way, the rolling friction exists between the jacking member 311 and the turntable 12, and it is more labor-saving to drive the movement of the jacking member 311. For example, in this embodiment, the jacking member 311 is a wheel structure, but it is not limited thereto. Preferably, the jacking device 31 further includes a sliding mounting member 313. The sliding mounting member 313 is slidably mounted on the bottom plate 11, and the jacking member 311 is rotatably mounted around the center on the sliding mounting member 313. The setting of the sliding mounting member 313 facilitates the sliding operation of the jacking member 311. For example, the sliding mounting member 313 is a plate-shaped member, but it is not limited thereto. The jacking member 311 is mounted on the sliding mounting member 313 by means of a bearing 315, but it is not limited thereto.

[0043] As Figures 1 to 3As shown, the bottom plate 11 is provided with a supporting member 111 extending along the sliding direction of the sliding mounting member 313. The supporting member 111 is located beside the turntable 12. The turntable adjustment mechanism 30 is arranged between the supporting member 111 and the turntable 12, and the sliding mounting member 313 abuts against the supporting member 111. The supporting member 111 can support the turntable adjustment mechanism 30 and provide positioning for the turntable adjustment mechanism 30, so that the sliding mounting member 313 slides more stably. For example, the supporting member 111 is a straight bar structure, but is not limited thereto. In this embodiment, the supporting member 111 and the bottom plate 11 are of an integral structure. Of course, according to actual needs, the supporting member 111 and the bottom plate 11 can be set as a split structure.

[0044] As Figure 1 , Figure 2 and Figure 4 shown, the first end of the adjusting member 312 abuts against the sliding mounting member 313, and the adjusting member 312 under operation pushes the sliding mounting member 313 to slide. Specifically, the adjusting member 312 under operation pushes the sliding mounting member 313 to slide left / right. The linkage relationship between the adjusting member 312 and the sliding mounting member 313 is simple. A fixing member 13 is installed on one side of the bottom plate 11 where the sliding mounting member 313 is located. The adjusting member 312 is a stud structure, the adjusting member 312 is screwed to the fixing member 13, and a locking nut 14 is sleeved on the adjusting member 312. The adjusting member 312 is locked to the fixing member 13 by means of the locking nut 14. In this way, the fixing member 13 enables the adjusting member 312 to be firmly installed on the bottom plate 11. After operating the adjusting member 312 to rotate and push the sliding mounting member 313, the locking nut 14 is used to lock the adjusting member 312, so that the adjusting member 312 keeps pushing the sliding mounting member 313, and the sliding mounting member 313 is stably in a certain position. For example, the fixing member 13 is a plate member, but is not limited thereto. The fixing member 13 is installed on the bottom plate 11 by means of fixing screws 15, but is not limited thereto. Further, the fixing member 13 is embedded in the sinking groove of the bottom plate 11 and fastened with fixing screws 15. Such an embedded installation makes the fixing screws 15 not subject to shear force, and the reaction force exerted by the adjusting member 312 on the fixing member 13 is transmitted to the bottom plate 11.

[0045] Further, in this embodiment, the adjusting member 312 is a tightening stud, but is not limited thereto. Preferably, the fixing member 13 is provided with a locking screw 16 for locking the sliding mounting member 313 and the fixing member 13 together. After using the locking screw 16 to lock the sliding mounting member 313 and the fixing member 13 together, the reliable locking of the tightening stud 5 during use is ensured, and a double-thread anti-loosening structure is also formed.

[0046] As Figure 1 and Figure 2As shown, one side of the sliding mount 313 close to the turntable 12 is an arc surface structure. The arc surface structure faces the inner end of the outer edge of the turntable 12. That is to say, the arc surface structure is arranged facing the second outer edge structure 122. The arc surface structure of the sliding mount 313 can avoid the second outer edge structure 122 of the turntable 12. In the present invention, the second outer edge structure 122 of the turntable 12 is formed with a tooth structure, and the external driving device drives the turntable 12 to rotate by driving the tooth structure.

[0047] As Figure 1 and Figure 2 As shown, the adjusting member 312 is provided with a docking structure 3121 for connecting an external operating member. After the external operating member is connected to the docking structure 3121, by operating the external operating member, the adjusting member 312 can be driven to rotate, so as to push the sliding mount 313 to slide. For example, in this embodiment, the docking structure 3121 is an external hexagonal structure, and the external operating member is a wrench 40, but it is not limited thereto.

[0048] As Figure 1 and Figure 2 As shown, the sliding mount 313 is locked to the bottom plate 11 by a locking screw 314. The two sliding mounts 313 in the same pair of jacking devices 31 at least have a first adjustment limit state of approaching each other and a second adjustment limit state of moving away from each other. The two sliding mounts 313 are arranged between the first adjustment limit state and the second adjustment limit state to prevent excessive sliding of the sliding mounts 313 and prevent over-adjusting the turntable 12. Specifically, a waist-shaped hole 3131 extending along the sliding direction of the sliding mount 313 is formed on the sliding mount 313. The locking screw 314 passes through the waist-shaped hole 3131 and is screwed to the bottom plate 11. The cooperation between the locking screw 314 and the waist-shaped hole 3131 limits the sliding mount 313 between the first adjustment limit state and the second adjustment limit state.

[0049] As Figures 7 to 9 As shown, the structure of the turntable adjustment mechanism of the second embodiment is basically the same as that of the turntable adjustment mechanism of the first embodiment, and the difference lies in:

[0050] (1) The turntable adjustment mechanism 30 of the first embodiment only includes a pair of tightening devices 31, while the turntable adjustment mechanism 30 of the second embodiment includes two pairs of tightening devices. Specifically, the two pairs of tightening devices include a first tightening device 31a, a second tightening device 31b, a third tightening device 31c, and a fourth tightening device 31d. The first tightening device 31a and the second tightening device 31b form a pair of tightening devices, and the third tightening device 31c and the fourth tightening device 31d form a pair of tightening devices. The third tightening device 31c and the fourth tightening device 31d are arranged between the first tightening device 31a and the second tightening device 31b. The second end of the adjusting member 312 of the third tightening device 31c is screwed to the sliding mounting member 313 of the first tightening device 31a, and the second end of the adjusting member 312 of the fourth tightening device 31d is screwed to the sliding mounting member 313 of the second tightening device 31b.

[0051] (2) The adjusting members 312 of the first tightening device 31a and the second tightening device 31b adopt the same tightening stud as that of the first embodiment, and the adjusting members 312 of the third tightening device 31c and the fourth tightening device 31d both adopt splined hole studs.

[0052] (3) In this embodiment, the external operating member docked with the tightening studs of the first tightening device 31a and the second tightening device 31b is a wrench 40, and the external operating member docked with the splined hole studs of the third tightening device 31c and the fourth tightening device 31d is a crowbar 50, but it is not limited thereto.

[0053] (4) The splined hole stud structures of the third tightening device 31c and the fourth tightening device 31d are both provided with a docking structure 3121 for inserting the crowbar 50; specifically, the docking structure 3121 is a hole structure regularly distributed on the splined hole stud, and the hole structure is arranged on the outer side surface of the first end of the splined hole stud, but it is not limited thereto.

[0054] (5) The sliding mounting member 313 is provided with an operation notch 3132. The first end of the splined hole stud is arranged in the operation notch 3132, and the first end of the tightening stud is also arranged in the operation notch 3132. The setting of the operation notch 3132 avoids the operation of the wrench 40 and the crowbar 50. Such a setting also makes the structure of the turntable adjustment mechanism 30 more compact.

[0055] In this embodiment, the two pairs of tightening devices (31a, 31b, 31c, and 31d) provided can provide more sufficient support for the turntable 12 and more effectively adjust the inclination state of the turntable 12.

[0056] Except for the above differences, the rest is the same as the turntable adjustment mechanism 30 of the first embodiment, so it will not be described in detail here.

[0057] The following is an example to illustrate the adjustment method of the injection molding machine turntable of the second embodiment, which mainly includes the following steps:

[0058] Step S1: First, mount two dial indicators 60 symmetrically arranged along the rotation center of the turntable 12 on the first outer edge structure 121 of the turntable 12.

[0059] Step S2: Loosen the locking screw 314, the tightening nut 14, and the anti-loosening screw 16.

[0060] Step S3: Use a wrench 40 to clamp onto the hexagonal structure on the outer side of the jacking stud of the first jacking device 31a, and operate the wrench 40 to turn the jacking stud in the direction indicated by the solid arc arrow. The jacking stud pushes the sliding mounting member 313 to translate and feed in the direction indicated by the solid straight arrow (i.e., to the right). The sliding and feeding sliding mounting member 313 drives the lifting member 311 to push the turntable 12 upward.

[0061] Use a wrench 40 to clamp onto the hexagonal structure on the outer side of the jacking stud of the second jacking device 31b, and operate the wrench 40 to turn the jacking stud in the direction indicated by the solid arc arrow. The jacking stud pushes the sliding mounting member 313 to translate and feed in the direction indicated by the solid straight arrow (i.e., to the left). The sliding and feeding sliding mounting member 313 drives the lifting member 311 to lift the turntable 12 upward. During the process of turning the jacking studs on both the left and right sides, turn and feed alternately and equally many times on both sides (for example, turn one circle on the left, turn one circle on the right, then turn one circle on the left, turn one circle on the right), and keep the pointer change amounts of the two dial indicators 60 consistent.

[0062] Step S4: Tighten the anti-loosening screws 16 at the fixing members 13 on both the left and right sides.

[0063] Step 50: Insert a crowbar 50 into the hole structure of the splined hole stud of the third jacking device 31c, and operate the crowbar 50 to pry and turn the splined hole stud in the direction of the solid arc arrow. The splined hole stud unscrews the sliding mounting member 313 of the first jacking device 31a, and at the same time pushes the sliding mounting member 313 of the third jacking device 31c to slide and feed in the direction indicated by the solid arrow (i.e., to the right). The sliding and feeding sliding mounting member 313 drives the lifting member 311 to push the turntable 12 upward.

[0064] Insert a crowbar 50 into the hole structure of the splined stud of the fourth tightening device 31d, and operate the crowbar 50 to pry and twist the splined stud to rotate along the solid arc arrow direction. The splined stud is screwed out of the sliding mounting member 313 of the second tightening device 31b. At the same time, the sliding mounting member 313 of the fourth tightening device 31d is pushed to slide and feed along the direction indicated by the solid arrow (i.e., to the left). The sliding mounting member 313 that slides and feeds drives the lifting member 311 to push the turntable 12 upward. Similarly, during the process of prying and twisting the splined studs on the left and right sides, it is necessary to alternately pry and twist left and right, and feed in equal amounts multiple times (for example, pry and twist one turn on the left, one turn on the right, then one turn on the left, one turn on the right), and keep the pointer change amounts of the two dial indicators 60 consistent.

[0065] Step S5: Detect the parallelism value A between the end face of the turntable 12 and the end face of the fixed template 20 to make it meet the preset standard value; if not, loosen the lock screw 16, and repeat steps S3 - S50 until the parallelism value A between the end face of the turntable 12 and the end face of the fixed template 20 meets the preset standard value.

[0066] Step S6, drive the turntable 12 to rotate 180° slowly in each of the clockwise and counterclockwise directions, and rotate 2 - 3 times, and observe that the value B of the circular runout of the pointer change of one of the dial indicators 60 does not exceed the specified value; if not qualified, repeat steps S3 - S5 until the value B of the circular runout meets the preset specified value. If qualified, the adjustment is ended. Finally, tighten the locking screw 314, the lock nut 14 and the lock screw 16, and remove the dial indicator 60, the wrench 40 and the crowbar 50.

[0067] The above is the adjustment method of the turntable of the injection molding machine in the second embodiment. The adjustment method of the turntable of the injection molding machine in the first embodiment is substantially the same as the foregoing adjustment method, except that step S50 is missing. Those skilled in the art can clearly understand, so it will not be elaborated here.

[0068] Driving the turntable 12 to rotate slowly means driving the turntable 12 to rotate at a slower speed, based on being able to clearly and accurately observe the value of the dial indicator 60.

[0069] It is worth mentioning that the turntable adjustment mechanism 30 of the present invention can also be provided with more pairs of tightening devices. For example, 3, 4, 5... pairs of tightening devices can be provided. The multiple pairs of tightening devices are arranged in a layered manner from the inside to the outside, but not limited thereto.

[0070] The above-disclosed are only the preferred examples of the present invention, and the scope of the rights of the present invention cannot be limited thereby. Therefore, equivalent changes made according to the claims of the present invention all fall within the scope covered by the present invention.

Claims

1. A turntable adjustment mechanism is applied to an injection molding machine. The injection molding machine includes a turntable mechanism, and the turntable mechanism includes a bottom plate and a turntable rotatably mounted on the bottom plate. It is characterized in that, The turntable adjustment mechanism includes at least a pair of jacking devices mounted on the base plate and arranged on the outer side of the circumference of the turntable. Each pair of the jacking devices is symmetrically arranged relative to the rotation center of the turntable. The jacking device includes a jacking member and an adjusting member. The jacking member is slidably and adjustably mounted on the base plate. The jacking member abuts against the outer end of the outer edge of the turntable. The adjusting member is mounted on the base plate and is arranged in a linkage manner with the jacking member. The adjusting member under operation drives the jacking member to slide and feed towards the center of the turntable adjustment mechanism, so that the jacking member adjusts the inclination state of the turntable by pushing against the outer edge of the turntable. The jacking device further includes a sliding mounting member. The sliding mounting member is slidably mounted on the base plate. The jacking member is rotatably mounted at the center of the sliding mounting member. The first end of the adjusting member abuts against the sliding mounting member. The adjusting member under operation pushes the sliding mounting member to slide.

2. The turntable adjustment mechanism according to claim 1, characterized in that, The base plate is provided with a supporting member extending along the sliding direction of the sliding mounting member. The supporting member is located beside the turntable. The turntable adjustment mechanism is arranged between the supporting member and the turntable. The sliding mounting member abuts against the supporting member.

3. The turntable adjustment mechanism according to claim 1, characterized in that, A fixing member is mounted on one side of the base plate where the sliding mounting member is located. The adjusting member is a stud structure. The adjusting member is screwed to the fixing member. A lock nut is sleeved on the adjusting member. The adjusting member is locked to the fixing member by means of the lock nut. A locking screw for locking the sliding mounting member and the fixing member together is provided on the fixing member.

4. The turntable adjustment mechanism according to claim 1, wherein An operation notch is formed in the sliding mounting member. The first end of the adjusting member is arranged in the operation notch. A docking structure for connecting an external operating member is provided on the adjusting member. The docking structure is an external hexagon structure or a hole structure regularly distributed on the adjusting member.

5. The turntable adjustment mechanism according to claim 1, characterized in that The sliding mounting member is locked to the base plate by means of a locking screw. The two sliding mounting members in the same pair of jacking devices have at least a first adjustment limit state of approaching each other and a second adjustment limit state of moving away from each other.

6. The turntable adjustment mechanism according to claim 5, characterized in that, A kidney-shaped hole extending along the sliding direction of the sliding mounting member is formed in the sliding mounting member. The locking screw passes through the kidney-shaped hole and is screwed to the base plate. The side surface of the sliding mounting member close to the turntable is an arc surface structure. The arc surface structure faces the inner end of the outer edge of the turntable.

7. The turntable adjustment mechanism according to claim 1, characterized in that, The turntable adjustment mechanism includes two pairs of the jacking devices. The two pairs of the jacking devices include a first jacking device, a second jacking device, a third jacking device and a fourth jacking device. The first jacking device and the second jacking device form a pair of jacking devices. The third jacking device and the fourth jacking device form a pair of jacking devices. The third jacking device and the fourth jacking device are arranged between the first jacking device and the second jacking device. The second end of the adjusting member of the third jacking device is screwed to the sliding mounting member of the first jacking device. The second end of the adjusting member of the fourth jacking device is screwed to the sliding mounting member of the second jacking device.

8. An injection molding machine, characterized in that, It includes a turntable mechanism, a fixed template, and the turntable adjustment mechanism according to any one of the above claims 1-7. The turntable mechanism includes a bottom plate and a turntable rotatably mounted on the bottom plate. The turntable adjustment mechanism is mounted on the bottom plate, and the lifting member abuts against the outer end of the outer edge of the turntable.

9. The injection molding machine according to claim 8, characterized in that, The outer edge of the turntable includes a first outer edge structure and a second outer edge structure arranged in a stepped structure. The lifting member abuts against the first outer edge structure, and a tooth structure is provided on the second outer edge structure of the turntable.

10. A method for adjusting the turntable of an injection molding machine, characterized in that, It includes the following steps: Step S1: Mount two dial indicators symmetrically arranged along the rotation center of the turntable on the first outer edge structure of the turntable. Step S2: Loosen the locking screw, the jam nut, and the lock screw. Step S3: Use a wrench to clamp onto the hexagonal structure of the jacking stud of the first jacking device, and operate the wrench to turn the jacking stud. The jacking stud pushes the sliding mounting member to slide and feed, and the sliding mounting member drives the lifting member to jack up the turntable upward. Use a wrench to clamp onto the hexagonal structure of the jacking stud of the second jacking device, and operate the wrench to turn the jacking stud of the second jacking device. The jacking stud pushes the sliding mounting member to slide and feed, and the sliding mounting member drives the lifting member to jack up the turntable upward. During this process, turn the jacking stud of the first jacking device and the jacking stud of the second jacking device equally and alternately multiple times, and keep the pointer change amounts of the two dial indicators consistent. Step S4: Tighten the two lock screws. Step S5: Detect the parallelism value A between the end face of the turntable and the end face of the fixed template to make it meet the preset standard value. If not, loosen the locking screw and repeat steps S3-S5 until the parallelism value A between the end face of the turntable and the end face of the fixed template meets the preset standard value. Step S6: Drive the turntable to rotate 180° clockwise and counterclockwise slowly, and rotate 2-3 times each. Observe that the value B of the circular runout of the pointer change of one of the dial indicators does not exceed the preset specified value. If not qualified, repeat steps S3-S6 until the value B of the circular runout meets the preset specified value. If qualified, end the adjustment, tighten the locking screw, the jam nut, and the lock screw, and remove the dial indicator and the wrench.

11. The adjustment method of the injection molding machine turntable according to claim 10, characterized in that, For an injection molding machine with a third clamping device and a fourth clamping device, it further includes step 50 between step S4 and step S5. Step 50: Insert a crowbar into the hole structure of the splined stud of the third clamping device, and operate the crowbar to pry and twist the splined stud to rotate. While the splined stud is screwed out of the sliding mounting part of the first clamping device, it pushes the sliding mounting part of the third clamping device to slide and feed. The sliding mounting part that slides and feeds drives the lifting part to lift the turntable upward; Insert a crowbar into the hole structure of the splined stud of the fourth clamping device, and operate the crowbar to pry and twist the splined stud to rotate. While the splined stud is screwed out of the sliding mounting part of the second clamping device, it pushes the sliding mounting part of the fourth clamping device to slide and feed. The sliding mounting part that slides and feeds drives the lifting part to lift the turntable upward; During this process, the splined studs of the third clamping device and the fourth clamping device are alternately turned multiple times in equal amounts, and the pointer change amounts of the two dial indicators are kept consistent.

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