Distance adjustment device and sizing device

Abstract

The present invention discloses a distance adjustment device and a sizing device, wherein the distance adjustment device comprises a base, at least two groups of distance assemblies, a driving member and a transmission assembly. The base forms an installation space; at least two groups of distance assemblies are connected to the base and arranged in the installation space; the distance assemblies comprise a screw and at least one pair of slides; at least one pair of slides are connected to the screw, and when the screw rotates, the two slides in each pair of slides move toward or away from each other; the driving member is connected to one of the screws to rotate the screw; the transmission assembly is connected to the screw to link at least two screws. Through the above arrangement, when multiple groups of distance adjustment are required, it is only necessary to rotate the screw of one group of distance assemblies to change the distance between the two slides, so that the screws in the remaining distance assemblies can be rotated, and the distance between the slides therein can be changed proportionally, thereby avoiding the problem of repeated calibration caused by the independent adjustment of each pair of slides, and improving work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of plastic production, in particular to a distance adjusting device and a sizing device. Background Art

[0002] In the process of industrial production and processing, multiple sets of constant proportional distance adjustment are often required. At present, the most widely used method is to adjust one set of slides in sequence and separately. The adjustment takes a long time, and when the distance between multiple sets of slides needs to be proportionally enlarged or reduced, repeated calibration and adjustment are often required, which makes the multiple sets of constant proportional distance adjustment steps cumbersome and inconvenient to operate. Summary of the invention

[0003] The main purpose of the present invention is to provide a distance adjustment device, which aims to achieve multiple groups of proportional distance adjustment requirements, single-position linkage precise adjustment, avoid repeated calibration, and improve work efficiency.

[0004] To achieve the above object, the present invention provides a distance adjustment device for performing multiple groups of constant ratio distance adjustment, the distance adjustment device comprising:

[0005] A base, wherein the base forms an installation space;

[0006] At least two sets of distance components, the at least two sets of distance components are connected to the base and arranged in the installation space, the distance components include a screw and at least one pair of slides, the at least one pair of slides are connected to the screw, and when the screw rotates, the two slides in each pair of slides move towards or away from each other;

[0007] a driving member connected to at least one of the screw rods to rotate the screw rod; and

[0008] A transmission assembly is connected to the screw rods to link at least two of the screw rods.

[0009] In one embodiment, the screw rod comprises a positive thread portion and a negative thread portion, wherein the thread directions of the positive thread portion and the negative thread portion are opposite and the pitches are the same;

[0010] The at least one pair of slides includes an orthogonal slide and an anti-thread slide. The orthogonal slide is arranged at the orthogonal portion, and the anti-thread slide is arranged at the anti-thread portion.

[0011] In one embodiment, the distance assembly is further provided with a guide rod, which is arranged in parallel with the screw rod in the installation space and connected to the base, and the guide rod passes through the slide.

[0012] In one embodiment, the slide table is provided with a through hole, the guide rod passes through the through hole, and an oil-free bushing is provided between the guide rod and the through hole;

[0013] And / or, at least two of the guide rods pass through two ends of the slide respectively.

[0014] In one embodiment, the transmission assembly is provided with at least two gears, one of the gears is correspondingly connected to one end of the screw rod, and at least two of the gears are arranged on the same side and mesh with each other.

[0015] In one embodiment, the transmission assembly further includes a transmission cover, wherein the transmission cover covers the base to form a transmission space, and the gear is disposed in the transmission space.

[0016] In one embodiment, the base comprises:

[0017] Base plate;

[0018] Vertical plates, two of which are disposed on two opposite sides of the bottom plate; and

[0019] An isolation cover is connected to the side of the vertical plate away from the bottom plate, and the isolation cover, the two vertical plates and the bottom plate enclose the installation space.

[0020] In one embodiment, the vertical plate is provided with a mounting hole, the screw rod is connected to the mounting hole via a bearing, and a retaining ring is provided on a side of the bearing away from the mounting space to limit the axial movement of the bearing.

[0021] The present invention further provides a sizing device for monitoring the inner diameter and outer diameter of the casing, the sizing device comprising:

[0022] Detection probe; and

[0023] The distance adjusting device is the distance adjusting device described in any of the above embodiments, and the detection probe is arranged on the slide.

[0024] In one embodiment, the distance adjusting device includes two groups of the distance fixing components, and the distance fixing components include a pair of the slides, and a probe mounting plate is provided between the slides and the detection probe.

[0025] The technical solution of the present invention proposes a distance adjustment device, which includes a base, at least two groups of distance components, a drive member and a transmission assembly. The base forms an installation space; at least two groups of distance components are connected to the base and arranged in the installation space; the distance components include a screw and at least one pair of slides; at least one pair of slides are connected to the screw, and when the screw rotates, the two slides in each pair of slides move toward or away from each other; the drive member is connected to one of the screws to rotate the screw; the transmission assembly is connected to the screw to link at least two screws. Through the above arrangement, when multiple groups of distance adjustment are required, it is only necessary to rotate the screw of one group of distance components to change the distance between the two slides, so that the screws in the remaining distance components can be rotated, and the distance between the slides of multiple groups of distance components can be proportionally changed, thereby avoiding the problem of repeated calibration caused by the independent adjustment of the slides of each group of distance components, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0027] Figure 1 It is a structural schematic diagram of an embodiment of a distance adjustment device of the present invention;

[0028] Figure 2 It is a structural schematic diagram of another perspective of an embodiment of a distance adjustment device of the present invention;

[0029] Figure 3 FIG. 2 is a schematic diagram of a distance adjustment device according to another embodiment of the present invention.

[0030] Description of Figure Numbers:

[0031]

[0032]

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] In order to achieve the purpose of multiple sets of constant ratio distance adjustment, the present invention proposes a distance adjustment device 100, which includes a base 10, at least two sets of distance components, a driving member 20 and a transmission assembly 50. The base 10 forms an installation space; at least two sets of distance components are connected to the base 10 and arranged in the installation space; the distance components include a screw and at least one pair of slides, at least one pair of slides is connected to the screw, and when the screw rotates, the two slides in each pair of slides move toward or away from each other; the driving member 20 is connected to one of the screws to rotate the screw; the transmission assembly 50 is connected to the screw to link at least two screws.

[0038] Reference Figures 1 to 3 In one embodiment, the distance adjusting device 100 includes two sets of distance components, and the two sets of distance components are respectively a first distance component 30 and a second distance component 40. The first distance component 30 and the second distance component 40 are arranged in parallel in the installation space up and down, and the first distance component 30 includes a first screw rod 31 and a first slide 33 and a second slide 35 arranged oppositely, and the second distance component 40 includes a second screw rod 41 and a third slide 43 and a fourth slide 45 arranged oppositely. Among them, the first distance component 30 is located above the second distance component 40, and the center points of the surfaces of the first slide 33 and the second slide 35 are marked as A1 and B2 respectively, and the center points of the surfaces of the third slide 43 and the fourth slide 45 are marked as B1 and A2 respectively. Figure 3 , define the distance between A1 and B2 as L1, the distance between B1 and A2 as L2, the distance between A1 and B1 and between A2 and B2 as L3, and The driving member 20 is connected to the first screw rod 31. When the first screw rod 31 rotates, the second screw rod 41 is driven to rotate via the transmission assembly 50. The transmission assembly 50 has a transmission ratio n, that is, when the first screw rod 31 rotates r1, the second screw rod 41 rotates It is assumed that when the first screw rod 31 rotates once, the distance that A1 and B2 move toward or away from each other is T1, and when the second screw rod 41 rotates once, the distance that B1 and A2 move toward or away from each other is T2.

[0039] It can be obtained that when the driving member 20 drives the first screw rod 31 to rotate r1, the change ΔL1 of L1 is:

[0040] ΔL1=r1×T1②

[0041] The change of L2, ΔL2, is:

[0042] ΔL2=r2×T2③

[0043] From equations ① to ③, we can get:

[0044]

[0045] The change of L3 ΔL3 is:

[0046]

[0047] Substituting into equations ② and ③, we can get:

[0048]

[0049] From the above, it can be seen that, under the condition of preset n, T1, T2, if L1 changes by ΔL1, under the action of the transmission assembly 50, L2 will also change by ΔL2, and L3 will change by ΔL3, and ΔL2 and ΔL3 are both proportional to ΔL1. In other words, under the condition of certain n, T1, T2, set

[0050]

[0051]

[0052] k1 is a fixed value, k2 is also a fixed value, ΔL2 = k1 × ΔL1, ΔL3 = k2 × ΔL1. Through the above settings, it can be understood that when multiple sets of distance adjustment are required, it is only necessary to rotate the screw of one set of fixed-distance components to change the distance between the two relative slides, and then the screws in the remaining fixed-distance components can be rotated, and the distance between the slides of multiple sets of fixed-distance components can be proportionally changed, avoiding the repeated calibration problem caused by the independent adjustment of the slides of each set of fixed-distance components, and improving work efficiency.

[0053] Of course, in other embodiments of the present application, depending on the actual situation, the two sets of distance components can be arranged horizontally or tilted, which does not affect the application. The distance adjustment device 100 can also be provided with more than two sets of distance components, and multiple pairs of slides can be provided on the screw rod of each set of distance components to adjust multiple distances. It can be understood that the multiple sets of distances adjusted by the multiple sets of distance components can be verified by the above proof, that is, the multiple sets of distances are all proportionally changed, which will not be elaborated here.

[0054] In one embodiment, the screw includes a positive thread portion and a negative thread portion, the thread directions of the positive thread portion and the negative thread portion are opposite and the pitch is the same, at least one pair of slides includes a positive thread slide and a negative thread slide, the positive thread slide is arranged at the positive thread portion, and the negative thread slide is arranged at the negative thread portion, when the screw rotates, the positive thread slide and the negative thread slide can move towards or away from each other. In this embodiment, the first slide 33 and the third slide 43 are positive thread slides, and the second slide 35 and the fourth slide 45 are negative thread slides. In order to facilitate the calculation of the proportional coefficient, the positive thread portion and the negative thread portion of the first screw 31 and the second screw 41 have the same pitch, and at the same time, the positive thread slide and the negative thread slide have better synchronization. Depending on the actual situation, the pitch of the positive thread portion and the negative thread portion of the screw may also be different. Taking the first screw 31 as an example:

[0055] Assume that the pitch of the orthogonal portion of the first screw rod 31 is T 11 , the reverse thread pitch is T 12 When the first screw rod 31 rotates r1 times, the first slide 33 moves a distance ΔA1=r1×T 11 , the distance moved by the second slide 35 is ΔB2 = r1 × T 12 , then the distance A1 and B2 move is the change of L1:

[0056] ΔL1=ΔA1+ΔB2=r1×(T 11 +T 12 )

[0057] make

[0058] T1=T 11 +T 12

[0059] You can get

[0060] ΔL1=r1×T1②

[0061] Similarly, the second screw rod 41 still has the following pitches when the pitches of the positive thread part and the negative thread part are different:

[0062] ΔL2=r2×T2③

[0063] Therefore, even if the pitch of the positive thread part and the negative thread part is different, the distances between the multiple sets of slides can still be changed proportionally.

[0064] Reference Figure 2 , the transmission assembly 50 is provided with at least two gears, one gear is connected to one end of a screw rod, and at least two gears are arranged on the same side and mesh with each other. In one embodiment, the distance adjustment device 100 is provided with a first distance component 30 and a second distance component 40, and adopts a gear transmission method. The driving member 20 is connected to one end of the first screw rod 31, the first gear 51 is arranged at the end of the first screw rod 31 away from the driving member 20, and the second gear 52 is connected to the second screw rod 41 and is arranged on the same side as the first gear 51. The gears and the screw rod are fixedly connected by a locking screw. The first gear 51 and the second gear 52 mesh with each other, the first gear 51 is a driving wheel, and the second gear 52 is a driven wheel. The reciprocal of the ratio of the number of teeth of the first gear 51 to the second gear 52 is the transmission ratio n.

[0065] In other embodiments of the present application, if there is a large distance between the first distance component 30 and the second distance component 40, the first gear 51 and the second gear 52 can be driven by a belt or a track, or the transmission component 50 can adopt other forms of effective transmission methods, and it is only necessary to ensure that the transmission component 50 has a fixed transmission ratio.

[0066] In one embodiment, the transmission assembly 50 further includes a transmission cover 55, which covers the base 10 to form a transmission space, and the gear is arranged in the transmission space. The pitch adjustment device 100 is commonly used in various production workshops, and the transmission assembly 50 often includes many relatively precise components. The transmission cover 55 can prevent the transmission assembly 50 from being disturbed during the production process, ensure its stable operation, and extend the service life of the equipment to a certain extent.

[0067] Reference Figure 1 and Figure 2 In one embodiment, the distance component is further provided with a guide rod 38, which is arranged in parallel with the screw in the installation space and connected to the base 10, and the guide rod 38 passes through the slide. In this embodiment, the slide has a large volume or weight, and the guide rod 38 arranged along the screw direction can provide a certain support for the slide, so that it can run stably along the length direction of the screw, and further reduce the error, improve the accuracy of the distance between the two slides, and ensure that the change of the distance between multiple sets of slides meets the preset ratio. Figure 1 In other embodiments of the present application, at least two guide rods 38 may be provided to pass through the two ends of the slide respectively to further enhance the structural stability.

[0068] In one embodiment, the slide is provided with a through hole, and the guide rod 38 passes through the through hole. An oil-free bushing 39 is provided between the guide rod 38 and the through hole to improve the stability of the connection between the guide rod 38 and the slide, so that it can be applied to a variety of working environments. At the same time, the use of the oil-free bushing 39 can save volume space and reduce the weight of the structure.

[0069] Reference Figure 1 and Figure 2In one embodiment, the base 10 includes a bottom plate 11, a vertical plate 13 and an isolation cover 15. The two vertical plates 13 are arranged on opposite sides of the bottom plate 11. The isolation cover 15 connects the sides of the vertical plates 13 away from the bottom plate 11. The isolation cover 15, the two vertical plates 13 and the bottom plate 11 form an installation space. In this embodiment, the vertical plate 13 is provided with a mounting hole, and the screw rod is connected to the mounting hole through a bearing 131. A retaining ring 133 is provided on the side of the bearing 131 away from the installation space to limit the axial movement of the bearing 131. A blind hole is also opened on the vertical plate 13, and the guide rod 38 is connected to the blind hole. The isolation cover 15 can prevent dust from falling into the distance component, providing a good working environment for it.

[0070] The present invention further proposes a sizing device for monitoring the inner diameter and outer diameter of the casing, the sizing device comprising a detection probe 101 and a distance adjusting device 100, the distance adjusting device 100 being the distance adjusting device 100 of any of the above embodiments, and the detection probe 101 being arranged on the slide. Since the sizing device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0071] In the production process of the heat shrinkable tube, a sizing device is used to measure the inner diameter and outer diameter thereof. In one embodiment, the distance adjusting device 100 includes two sets of distance assemblies, and a probe mounting plate 103 is provided between the slide table and the detection probe 101. The four detection probes 101 are respectively located at the center point of the surface of the slide table, that is, they coincide with A1, B2, B1, and A2 respectively. The distance between A1 and B2 is L1, the distance between B1 and A2 is L2, and the distance between A1 and B1 and between A2 and B2 is L3. L1 is the outer diameter of the heat shrinkable tube, L2 is the inner diameter of the heat shrinkable tube, and L3 is the wall thickness of the heat shrinkable tube. When the outer diameter of the heat shrinkable tube changes, the inner diameter and the wall thickness also change proportionally.

[0072] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A distance adjustment device for performing multiple sets of constant ratio distance adjustment, characterized in that: include: A base, wherein the base forms an installation space; At least two sets of distance components, the at least two sets of distance components are connected to the base and arranged in the installation space, the distance components include a screw and at least one pair of slides, the at least one pair of slides are connected to the screw, and when the screw rotates, the two slides in each pair of slides move towards or away from each other; a driving member connected to at least one of the screw rods to rotate the screw rod; and A transmission assembly is connected to the screw rods to link at least two of the screw rods.

2. The distance adjustment device according to claim 1, characterized in that: The screw rod comprises a positive thread portion and a negative thread portion, wherein the thread directions of the positive thread portion and the negative thread portion are opposite and the pitches are the same; The at least one pair of slides includes an orthogonal slide and an anti-thread slide. The orthogonal slide is arranged at the orthogonal portion, and the anti-thread slide is arranged at the anti-thread portion.

3. The distance adjustment device according to claim 2, characterized in that: The distance-fixing assembly is further provided with a guide rod, which is arranged in parallel with the screw rod in the installation space and connected to the base, and the guide rod passes through the slide.

4. The distance adjustment device according to claim 3, characterized in that: The slide table is provided with a through hole, the guide rod passes through the through hole, and an oil-free bushing is provided between the guide rod and the through hole; And / or, at least two of the guide rods pass through two ends of the slide respectively.

5. The distance adjustment device according to claim 1, characterized in that: The transmission assembly is provided with at least two gears, one of the gears is correspondingly connected to one end of the screw rod, and at least two of the gears are arranged on the same side and mesh with each other.

6. The distance adjustment device according to claim 5, characterized in that: The transmission assembly further includes a transmission cover, which covers the base to form a transmission space, and the gear is arranged in the transmission space.

7. The distance adjustment device according to any one of claims 1 to 6, characterized in that: The base comprises: Base plate; Vertical plates, two of which are disposed on two opposite sides of the bottom plate; and An isolation cover is connected to the side of the vertical plate away from the bottom plate, and the isolation cover, the two vertical plates and the bottom plate enclose the installation space.

8. The distance adjustment device according to claim 7, characterized in that: The vertical plate is provided with a mounting hole, the screw rod is connected to the mounting hole via a bearing, and a retaining ring is provided on the side of the bearing away from the mounting space to limit the axial movement of the bearing.

9. A sizing device for monitoring the inner diameter and outer diameter of a casing, characterized in that: The sizing device comprises: Detection probe; and A distance adjusting device, wherein the distance adjusting device is the distance adjusting device according to any one of claims 1 to 8, and the detection probe is arranged on the slide.

10. The sizing device according to claim 9, characterized in that: The distance adjusting device comprises two groups of the distance fixing components, and the distance fixing components comprise a pair of the slides, and a probe mounting plate is arranged between the slides and the detection probe.

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