Constant contact sliding mechanism

Abstract

The utility model provides a constant-contact sliding mechanism which comprises symmetrically-arranged supporting rails, an actuating rod is arranged between the two supporting rails, guide grooves extending front and back are formed in the inner side faces of the supporting rails, the section of each guide groove is in the shape of a right-angled n which is open towards the inner side, and a plurality of installation sections which are arranged front and back at intervals are arranged on the actuating rod. The left side and the right side of each installation section are each provided with a rolling wheel located in the corresponding guide groove. At least one adjusting section is arranged in the multiple installation sections, the adjusting assembly used for adjusting the longitudinal position of the rotating shaft is arranged on the adjusting section on the action rod, so that the gap between the rolling wheel and the top wall of the guide groove is eliminated, and the supporting rail stably provides telescopic supporting force for the action rod all the time; the action rod is effectively prevented from deflecting downwards after extending out of the outer end of the supporting rail, the stretching fluency of the action rod is improved, meanwhile, the protruding block on the action rod can be stably matched with the hooking piece, and the roller replacing efficiency is improved.

Description

Technical Field

[0006]

[0001] The utility model relates to the field of metal surface treatment, and particularly relates to a constant-contact sliding mechanism. Background Art

[0002] After the steel plate is produced, it will be made into corresponding parts according to different usage requirements. However, before the steel plate is put into the production process, a preparation time for processing the steel plate needs to be reserved. During the preparation time, the steel plate will react with the moisture in the air, causing corrosion of the surface material of the steel plate. To remove the rust layer, the existing method is to remove rust through a grinding device that grinds the surface of the steel plate. This device physically grinds the surface of the steel plate by installing a brush roller, with less pollution. When this device grinds the steel plate, the brush roller contacts the surface of the steel plate. After long-term use, the grinding effect will also decline. Therefore, the old brush roller needs to be removed and placed on the brush roller replacement mechanism, and then a new roller is sent into the grinding device through the brush roller replacement mechanism for replacement.

[0003] A brush roller replacement mechanism designed by the applicant includes a base and a roller seat arranged on the base. The roller seat is used to承接 the brush roller; a driving component for driving the brush roller is arranged on the base. To save the space and cost of roller replacement, the driving component includes an action rod and a driving oil cylinder. Multiple protrusions are arranged at intervals on the action rod, and a hanging piece that is hooked and配合 with the protrusions is arranged on the roller seat. The driving oil cylinder is connected to the action rod and can drive the action rod to extend through the oil cylinder, so that the protrusions are配合 with the hanging piece. Then the action rod retracts and带动 the roller seat to slide, alternating reciprocally until the roller seat slides to the corresponding position to achieve the purpose of transporting the brush roller.

[0004] As Figure 19 shown, to make the telescopic process of the action rod smoother, multiple spaced installation sections are provided on the action rod. Both sides of each installation section are connected with rollers. Symmetric support tracks are arranged on the base. The support tracks are usually channel steels, and a "C"-shaped guide groove is opened on the inner side of the track. The rollers roll in the corresponding "C"-shaped guide groove, enabling the action rod to smoothly extend and retract relative to the support track; however, such a design still has deficiencies.

[0005] As Figure 15a shown, to save space, the length of the support track is only slightly longer than the length of the action rod. When the action rod extends, it will extend beyond the outer end of the support track; ideally, multiple rollers should only be in tight contact with the bottom wall and the top wall of the "C"-shaped guide groove. However, due to manufacturing errors and installation errors of the rollers, there is a small gap between the rollers and the top wall of the "C"-shaped guide groove. After the action rod extends, it is prone to deflect downward under the action of gravity, and the deflected action rod is prone to jamming when retracting.

[0006] After the operating rod deflects downward, it is easy for the protrusion and the hanging piece to be misaligned. When the operating rod retracts, the protrusion hooked on the hanging piece is likely to separate from the hanging piece, affecting the roll-changing progress and efficiency. Summary of the Invention

[0007] To solve the above technical problems, the purpose of the present utility model is to provide a constant-contact sliding mechanism. By providing an adjustment component on the adjustment section of the operating rod to act on and adjust the longitudinal position of the rotating shaft, the gap between the roller and the top wall of the guide groove is eliminated, enabling the support track to always stably provide telescopic support force for the operating rod, effectively preventing the operating rod from deflecting downward after extending beyond the outer end of the support track, improving the smoothness of the telescopic movement of the operating rod, and at the same time enabling the convex block on the operating rod to stably cooperate with the hanging piece, thus enhancing the roll-changing efficiency.

[0008] The technical solution of the present utility model is realized as follows:

[0009] A constant-contact sliding mechanism, comprising:

[0010] Support tracks, symmetrically arranged in the left-right direction. The inner side surface of the support track is provided with a guide groove extending in the front-back direction, and the cross-sectional shape of the guide groove is a "C" shape opening inward.

[0011] An operating rod, arranged between two support tracks. The operating rod has a plurality of mounting sections arranged at intervals in the front-back direction. On the left and right sides of each mounting section, there are rollers located in the corresponding guide grooves; the rollers roll in the guide grooves, enabling the operating rod to extend forward beyond the outer end of the support track.

[0012] Among the plurality of mounting sections, there is at least one adjustment section. The adjustment section is provided with a strip-shaped groove extending longitudinally, and the strip-shaped groove penetrates the adjustment section in the left-right direction; a rotating shaft is inserted into the strip-shaped groove, and the rotating shaft can float up and down in the strip-shaped groove; the corresponding rollers are rotatably connected to both ends of the rotating shaft; the adjustment section is provided with an adjustment component, and the adjustment component includes two adjustment members that can move longitudinally. The two adjustment members respectively abut against the upper and lower ends of the rotating shaft; by controlling the longitudinal movement of the adjustment members and acting on the up-and-down floating of the rotating shaft, the gap between the roller and the top wall of the guide groove is eliminated, so as to ensure that the operating rod remains horizontal when extending beyond the outer end of the support track.

[0013] Preferably, the adjustment member is an adjustment screw that is directly or indirectly in threaded cooperation with the operating rod; simply rotating the corresponding adjustment screw can complete the position adjustment of the roller, and the adjustment efficiency is relatively high.

[0014] Preferably, support blocks are provided on the left and right sides of the adjustment section, and the strip groove passes through the support blocks in the left and right directions; the upper and lower ends of each support block are provided with adjustment screw holes connected to the strip groove, and the two adjustment screws are screwed into the corresponding adjustment screw holes, so that the two adjustment screws are indirectly threaded on the action rod; the support blocks arranged on both sides of the adjustment section can serve as adjustment supports for the adjustment screws, so that the adjustment screws and the action rod form an indirect threaded fit, thereby forming a stable adjustment force on the rotating shaft.

[0015] Preferably, adjusting screw holes are provided at the upper and lower ends of the adjusting section, and the rotating shaft is connected to the outside world through the adjusting screw holes; the two adjusting screws are screwed into the corresponding adjusting screw holes, so that the two adjusting screws are directly threadedly engaged with the actuating rod; the adjusting section itself can serve as an adjusting support for the adjusting screw, so that the adjusting screw and the actuating rod form a direct threaded engagement, thereby forming a stable adjusting force on the rotating shaft.

[0016] Preferably, multiple adjustment screw holes spaced left and right are provided at both ends of the adjustment section, and multiple adjustment screws are passed through the corresponding adjustment screw holes to form multiple adjustment support points on the rotating shaft, providing sufficient support force and adjustment force for the rotating shaft.

[0017] Preferably, the ratio of the length of the support rail to the length of the actuating rod is in the range of 1:1-10:7; this range can ensure stable extension and retraction of the actuating rod and optimize the use cost and spatial layout of the brush roller replacement mechanism.

[0018] Preferably, the adjusting member is an electric cylinder having a longitudinal push rod that can be extended and retracted in the longitudinal direction. The longitudinal push rods of the two electric cylinders penetrate the action rod and act on the upper and lower ends of the rotating shaft respectively. The position adjustment of the roller can be completed by simply controlling the extension and retraction of the longitudinal push rods of the electric cylinder, and the adjustment efficiency is relatively high.

[0019] Preferably, the installation section includes an adjustment section with a strip groove and a non-adjustment section without a strip groove, and the ratio of the number of adjustment sections to the number of non-adjustment sections is 1:1; an upper contact point will be formed between the adjustment section and the top wall of the guide groove, and a lower contact point will be formed between the roller at the non-adjustment section position and the bottom wall of the guide groove, so that the number of upper contact points is the same as the number of lower contact points, making the action rod more stable when extending and retracting.

[0020] Preferably, a guide wheel rotatable along a vertical axis is provided in each guide groove, and the outer circumferences of the two guide wheels respectively abut against the left and right sides of the actuating rod to form a telescopic guide for the actuating rod.

[0021] Preferably, two rollers rotatably connected at both ends of the rotating shaft form a roller group on the corresponding mounting section; in at least one roller group on the action rod, the inner sides of the two rollers are provided with wheel edges protruding from the outer periphery of the rollers, and the wheel edges are attached to the inner side of the corresponding support rail to prevent the action rod from shifting laterally when it is extended or retracted.

[0022] The beneficial effects of the utility model using the above technical solution are:

[0023] By arranging two adjusting members acting on the upper and lower ends of the rotating shaft on the adjusting section of the action rod, the adjusting members can act on the rotating shaft in the longitudinal direction and cause the roller to float in the longitudinal direction until the roller at the adjusting section position contacts the top wall of the guide groove, thereby eliminating the gap between the roller at the adjusting section position and the guide groove, forming a "constant contact" effect, thereby keeping the action rod horizontal when extended, so that the action rod can stably cooperate with the hanging piece without separation while the action rod is stably extended and retracted, thereby improving the smoothness of the action rod and the efficiency of roller changing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the brush roller replacement mechanism;

[0025] Figure 2 This is a schematic diagram of the brush roller replacement mechanism sending the roller seat into the brush production line;

[0026] Figure 3 A schematic diagram of the bump crossing the front hook when the action lever is extended;

[0027] Figure 4 This is a schematic diagram of the rear side of the protrusion being connected to the front hook after the front hook is reset;

[0028] Figure 5 This is a schematic diagram of the action rod retracting and pulling the roller seat back;

[0029] Figure 6 A schematic diagram of the action rod extending again to engage the rear side of the next lug with the front hook;

[0030] Figure 7 This is a schematic diagram of the action rod retracting again and pulling the secondary roller seat back;

[0031] Figure 8 A schematic diagram of the action rod extending for the third time and causing the rear side of the next protrusion to engage with the front hook;

[0032] Figure 9 This is a schematic diagram of the action rod retracting for the third time and pulling the roller seat back to the initial position;

[0033] Figure 10 It is a structural diagram of the coordination between the action rod and the support track;

[0034] Figure 11 A cross-sectional view showing an adjustment assembly disposed on an actuating rod;

[0035] Figure 12 It is a side view of the action rod;

[0036] Figure 13is a cross-sectional view of the support block;

[0037] Figure 14 A cross-sectional view showing an adjustment assembly disposed on an actuating rod;

[0038] Figure 15a A schematic diagram showing that when there is a contact gap between the roller and the guide groove, the actuating rod extends out of the supporting track and is deflected downward by gravity;

[0039] Figure 15b A schematic diagram showing the action rod extending out of the support track to maintain horizontality after the contact gap is eliminated by the adjustment member;

[0040] Figure 16 is a top view of the hanging structure;

[0041] Figure 17 are cross-sectional views of the attachment structure at the cylinder position and the swing member position respectively;

[0042] Figure 18 is a cross-sectional view of the position of the adjustment member in Example 2;

[0043] Figure 19 This is a schematic diagram of the action rod cooperating with the support track through two rollers in the background technology;

[0044] The figures are marked as follows: 1-base, 2-roller seat, 3-power assembly, 4-brush production line, 5-hanging structure, 11-first track plate, 12-second track plate, 31-action rod, 32-bump, 32a-clamping groove, 33-installation section, 33a-adjustment section, 34-roller, 35-rotating shaft, 36-support rail, 37-support block, 38-adjusting screw, 39-power output member, 51-base, 52-swinging member, 52a-clamping protrusion, 53-front hook, 54-rear hook, 55-rear limit member, 56-front limit member, 57-air Cylinder, 58-first compression spring, 58a-second compression spring, 59-sleeve, 311-strip groove, 312-round hole, 313-connecting seat, 314-wheel edge, 315-guide wheel, 321-front side, 322-rear side, 361-guide groove, 371-adjusting screw hole, 372-electric cylinder, 373-longitudinal push rod, 391-piston rod, 511-support, 512-piston port, 513-horizontal axis, 571-telescopic rod, 572-first step surface, 59-sleeve, 591-second step surface, 592-countersunk hole, 593-guide hole, s-gap. DETAILED DESCRIPTION

[0045] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0046] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0047] like Figure 1-18 As shown, the present invention has multiple embodiments, and the specific implementation methods are as follows:

[0048] Embodiment 1: This embodiment provides a constant contact sliding mechanism, which is applied to a progressive brush roller replacement mechanism, which is used to unload and load rollers in a brush grinding production line 4 for steel plates, and includes a base 1 and a roller seat 2 for supporting the brush roller, a first track plate 11 being installed on the base 1, a second track plate 12 docking with the first track plate 11 being installed in the brush grinding production line 4, a rotating wheel being installed on the side of the roller seat 2, and the rotating wheel rolling on the first track plate 11 and the second track plate 12 so that the roller seat 2 can move forward or retreat on the base 1 along its own length direction; a power assembly 3 is also provided on the base 1, and the power assembly 3 includes an action rod 31 and a telescopic drive member 39, and the telescopic drive member 39 is connected to the action rod 31 and can drive the action rod 31 to extend forward or retract backward by its own telescoping; a plurality of protrusions 32 arranged at intervals front and back are provided on the action rod 31; a hanging structure 5 is provided on the roller seat 2, and the protrusion 32 has a front side surface 321 and a rear side surface 322 opposite to each other;

[0049] The brush roller replacement mechanism has an advancing state and a retreating state. The advancing state refers to that the roller seat 2 advances toward the inside of the grinding brush production line 4 to receive the old brush roller or feed in the new brush roller, and the retreating state refers to that the roller seat 2 drives out of the grinding brush production line 4; when the brush roller replacement mechanism is in the advancing state, the action rod 31 retracts and makes the front side surface 321 of the protrusion 32 at the rearmost position cooperate with the hanging structure 5, at this time the telescopic driving member 39 can drive the action rod 31 to extend forward to drive the roller seat 2 to advance forward, and then the telescopic driving member 39 drives the action rod 31 to retract and makes the front side surface 321 of the next protrusion 32 cooperate with the hanging structure 5, and this cycle is repeated until the roller seat 2 advances forward to the corresponding position; Figure 1-9As shown, when the brush roller replacement mechanism is in the retracted state, the action rod 31 extends forward and makes the rear side surface 322 of the protrusion 32 at the front end position cooperate with the hanging structure 5. At this time, the telescopic driving member 39 drives the action rod 31 to retract backward to drive the roller seat 2 to retreat backward. Then the telescopic driving member 39 drives the action rod 31 to extend forward and makes the rear side surface 322 of the next protrusion 32 cooperate with the hanging structure 5. This cycle is repeated until the roller seat 2 retreats backward to the corresponding position.

[0050] Furthermore, since the directions of the force received by the projection 32 and the hooking structure 5 are opposite when the roller seat 2 is in the advancing state and the retreating state, the hooking structure 5 has the function of switching the hooking direction. Specifically, Figure 16-17 As shown, the hanging structure 5 includes a base 51 connected to the roller base 2, and a swinging member 52 is rotatably connected to the base 51. The swinging member 52 has a rear hook 54 and a front hook 53. The intersection of the front hook 53 and the rear hook 54 has a center hole. The base 51 is provided with a rotation support shaft, which passes through the center hole so that the swinging hook 52 can rotate back and forth on the base 51; the base 51 is provided with a rear limit member 55 and a front limit member 56 corresponding to the positions of the rear hook 54 and the front hook 53 respectively;

[0051] The swing member 52 has a rear hooking mode corresponding to the advancing state and a front hooking mode corresponding to the retreating state. When the swing member 52 is in the rear hooking mode, the swing member 52 rotates and causes the front hook 53 to abut against the front limit member 56. At this time, the rear hook 54 is exposed outside the base 51 and forms a hooking fit with the front side surface 321 of the corresponding protrusion 32. At this time, after the action rod 31 extends forward, the front side surface 321 of the protrusion 32 will act forward on the rear hook 54. Since the front limit member 56 abuts against the front hook 53, the rear hook 54 will not rotate, so that the roller seat 2 can move stably. When the swing member 52 switches to the front hooking mode, the swing member 52 rotates and The rear hook 54 is abutted against the rear limit member 55. At this time, the front hook 53 is exposed outside the base 51 and forms a hooking fit with the rear side surface 322 of the corresponding protrusion 32; at this time, after the action rod 31 retracts backward, the rear side surface 322 of the protrusion 32 will act backward on the front hook 53. Since the rear limit member 55 abuts against the rear hook 54, the front hook 53 will not rotate, so that the roller seat 2 can retreat stably; by controlling the swing member 52 to swing, the protrusion 32 is hooked and matched with the front hook 53 or the rear hook 54 in different directions, so as to drive the roller seat 2 to slide in the corresponding direction. The design is sophisticated, so that the roller seat 2 can switch between the advancing state and the retreating state.

[0052] Furthermore, the protrusion 32 is to be engaged with the front hook 53 or the rear hook 54. When the protrusion 32 moves along with the actuating rod 31, the front hook 53 or the rear hook 54 is to leave corresponding space for the protrusion 32 to move. For example, when the front side surface 321 of the protrusion 32 is engaged with the rear hook 54, the protrusion 32 is to cross the rear hook 54 backward. Therefore, when the swing member 52 is in the rear hooking mode, the front hook 53 is in contact with the front limit member 56. At this time, a swing space is formed between the rear hook 54 and the rear limit member 55 to allow the rear hook 54 to rotate. To allow the protrusion 32 to cross over the rear hook 54 when the action rod 31 is retracted; when the swing member 52 is in the front hooking mode, the rear hook 54 abuts against the rear limit member 55. At this time, a swinging space is formed between the front hook 53 and the front limit member 56 to allow the front hook 53 to rotate, so as to allow the protrusion 32 to cross over the front hook 53 when the action rod 31 is extended; the reserved rotation space can prevent the protrusion 32 from interfering when crossing the front hook 53 or the rear hook 54, so that multiple protrusions 32 can form corresponding hooking cooperation with the front hook 53 or the rear hook 54 in turn.

[0053] Furthermore, a conversion drive member for acting on the swing member 52 is provided on the base 51, and the conversion drive member can drive the swing member 52 to swing back and forth, so that the swing member 52 switches between the rear hooking mode and the front hooking mode; by controlling the conversion drive member, the swinging direction of the swing member 52 can be controlled, so that the switching efficiency of the swing member 52 is improved; specifically, the conversion drive member is a cylinder 57, and the base 51 has a pipe connection 512 reserved for the air pipe at the position of the cylinder 57 to facilitate the installation of the air pipe; the cylinder 57 has a telescopic rod 571 for making the swing member 52 swing back and forth; the telescopic rod 571 of the cylinder 57 has a fast and sensitive telescopic process, and the switching efficiency is high.

[0054] Furthermore, to prevent the telescopic rod 571 from getting stuck during extension and retraction, the cylinder body of the cylinder 57 is rotatably connected to the base 51 via a transverse axis 513 . When the telescopic rod 571 is extended or retracted, the cylinder 57 can rotate to adapt to the moving direction of the telescopic rod 571 .

[0055] Furthermore, the swing angles of the front hook 53 and the rear hook 54 of the swing member 52 should be within a reasonable range. If the swing angle is too large, the telescopic rod 571 must be extended, which requires a larger stroke of the cylinder 57. If the swing angle is too small, the front hook 53 or the rear hook 54 will not be able to fully retract or be exposed from the base 51. Therefore, in this embodiment, the swing angle range of the swing member 52 is 15°-25°. Within this angle range, the telescopic rod 571 can be extended and the front hook 53 and the rear hook 54 can be freely switched between being exposed from the base 51 or being rotated back to the base 51.

[0056] Furthermore, the telescopic rod 571 and the swing member 52 are elastically connected. The telescopic rod 571 is extended and retracted to form an elastic force on the swing member 52, so that the swing member 52 switches between the rear hooking mode and the front hooking mode. When the swing member 52 is in the rear hooking mode and the protrusion 32 crosses the rear hook 54, the rear hook 54 can be elastically reset, so that the front side surface 321 of the protrusion 32 forms a hooking fit with the rear hook 54; when the swing member 52 switches to the front hooking mode and the protrusion 32 crosses the front hook 53, the front hook 53 can be elastically reset, so that the rear side surface 322 of the protrusion 32 forms a hooking fit with the rear hook 54. The front hook 53 forms a hooking fit; after the telescopic rod 571 forms an elastic connection with the swinging member 52, it does not affect the driving and control effects of the swinging member 52, and can also make the front hook 53 or the rear hook 54 elastically reset after rotation, completing the hooking fit with the front side surface 321 or the rear side surface 322 of the protrusion 32; and when the front hook 53 or the rear hook 54 rotates and swings within the corresponding swinging space, the design of the elastic connection prevents the swinging member 52 from transmitting the reaction force of the swinging to the telescopic rod 571, effectively protecting the telescopic rod 571, achieving three goals in one go, and the design is ingenious.

[0057] Furthermore, the telescopic rod 571 and the swinging member 52 are elastically connected as follows: a support 511 is provided on the base 51, and a shaft sleeve 59 is rotatably connected to the swinging member 52. A through guide hole 593 is provided on the shaft sleeve 59, and the telescopic rod 571 passes through the guide hole 593 and is slidably connected to the support 511; an elastic connection component is sleeved on the telescopic rod 571, and the elastic connection component includes a first compression spring 58 and a second compression spring 58a. A boss is provided on the side of the telescopic rod 571 close to the cylinder 57. The first compression spring 58 is arranged between the boss and the shaft sleeve 59 and provides a reset elastic force for the rear hook 54. The second compression spring 58a is arranged between the support 511 and the shaft sleeve 59 And provide a reset elastic force for the rear hook 54; specifically, the boss has a first step surface 572 on the side facing the sleeve 59, and along the penetration direction of the telescopic rod 571, countersunk holes 592 concentric with the guide hole 593 are opened at both ends of the sleeve 59, and the diameter of the countersunk hole 592 is larger than the diameter of the guide hole 593, and a second step surface 591 is formed at the junction with the guide hole 593. The two ends of the first compression spring 58 are pressed between the first step surface 572 and the corresponding second step surface 591 to provide a reset elastic force for the rear hook 54, and the two ends of the second compression spring 58a are pressed between the support 511 and the corresponding second step surface 591 to provide a reset elastic force for the front hook 53.

[0058] Furthermore, to prevent the bump 32 from easily disengaging from the front hook 53 or the rear hook 54 after the engagement, which may affect the engagement effect of the actuating rod 31 with the roller seat 2, engaging protrusions 52a are provided on both the rear hook 54 and the front hook 53, and engaging grooves 32a are also provided on the front side 321 and the rear side 322 of the bump 32. When the rear hook 54 or the front hook 53 is engaged with the bump 32, the engaging protrusion 52a and the corresponding engaging groove 32a form a snap connection, preventing the rear hook 54 or the front hook 53 from loosening when engaged with the bump 32.

[0059] Furthermore, in this embodiment, the telescopic driving member 39 is a hydraulic cylinder or an electric push rod. The hydraulic cylinder or the electric push rod has a piston rod 391. A connecting seat 313 is provided on the actuating rod 31, and the piston rod 391 is connected to the actuating rod 31 through the connecting seat 313. For the purpose of saving the cost and space layout of the brush roller replacement mechanism, the telescopic driving member 39 in this embodiment is a hydraulic cylinder or an electric push rod with a small stroke. That is to say, the distance that the piston rod 391 extends or retracts each time is less than the total distance that the roller seat 2 slides from the initial position to the corresponding position step by step. Since the actuating rod 31 in this embodiment is engaged with the front hook 53 or the rear hook 54 multiple times through multiple bumps 32, the roller seat 2 gradually slides to the corresponding position in multiple steps, which is equivalent to dividing the sliding stroke of the entire roller seat 2 into multiple small strokes. Therefore, the telescopic stroke of the hydraulic cylinder or the electric push rod does not have to be the same as the total stroke of the entire roller seat 2 sliding, reducing the cost and occupied space of the telescopic driving member 39.

[0060] Furthermore, since the working environment inside the grinding brush production line 4 is harsh, the actuating rod 31 is not suitable for a linear guide mechanism with high precision and high cost. Considering the cost and the roller replacement stability of the brush roller replacement mechanism, a constant contact sliding mechanism is provided on the base 1 in this embodiment, including support rails 36 symmetrically arranged on both sides of the actuating rod 31. A laterally extending guide groove 361 is opened on the inner side of the support rail 36, and the cross-sectional shape of the guide groove 361 is a "C" shape that opens inward. The support rail 36 is usually a channel steel with high structural strength and reasonable cost. The actuating rod 31 is arranged between the two support rails 36. The actuating rod 31 has multiple mounting segments 33 spaced apart from front to back. The mounting segment 33 refers to the length segment on the actuating rod 31 for mounting the roller 34. A roller 34 matching the guide groove 361 is provided on the mounting segment 33. By rolling the roller 34 in the guide groove 361, the actuating rod 31 can be stably extended out of the outer end of the support rail 36.

[0061] Furthermore, the support rail 36 needs to provide stable support for the extension and retraction of the action rod 31, but considering the use cost and the spatial layout of the brush roller replacement mechanism, the support rail 36 cannot be too long. Therefore, in this embodiment, the ratio of the length of the support rail 36 to the length of the action rod 31 is in the range of 1:1-10:7, that is, the support rail 36 can be slightly longer than the length of the action rod 31, which can not only ensure the stable extension and retraction of the action rod 31, but also optimize the use cost and spatial layout of the brush roller replacement mechanism.

[0062] Further, if Figure 15a As shown, in an ideal state, the outer diameter of the roller 34 matches the width of the guide groove 361. However, due to manufacturing errors and installation errors, the outer diameter of the roller 34 is difficult to completely match the guide groove 361. If the outer diameter of the roller 34 is too large, it cannot roll freely in the guide groove 34, affecting the smoothness of the extension and retraction of the action rod 31. Therefore, when the action rod 31 is not extended, there will be a gap s between the roller 34 in the guide groove 361 and the top wall of the guide groove 361. Due to the existence of the gap s, when the action rod 31 is extended, it will exceed the end of the support rail 36. The extended part will deflect downward under the action of its own gravity, making it difficult for the action rod 31 to maintain a horizontal state. If the deflection angle is too large, it will not only affect the smoothness of the retraction of the action rod 31, but may also cause the protrusion 32 on the action rod 31 to fail to hook with the front hook 53 or the rear hook 54, affecting the efficiency of roller changing. Therefore, in order to avoid this phenomenon, as shown in FIG. Figure 15b The cam 35 is provided with a plurality of fixing portions 33 of the first and second fixing portions 33 of the second fixing portion 33. The fixing portions 33 of the second and second fixing portions 33 of the second fixing portion 33 are provided with a plurality of fixing portions 33 of the second fixing portion 33. The fixing portions 33 of the second and second fixing portions 33 of the second fixing portion 33 are provided with a plurality of fixing portions 33 of the second fixing portion 33.

[0063] Further, if Figure 10-13As shown, in order to ensure the adjustment effect and efficiency, the adjustment member is an adjustment screw 38 that is directly or indirectly threadedly engaged with the action rod 31. There are two ways to set the adjustment screw 38. The first setting method is as follows: support blocks 37 are provided on the left and right sides of the adjustment section 33a, and the strip groove 311 penetrates the support block 37 along the left and right directions; the upper and lower ends of each support block 37 are provided with an adjustment screw hole 371 that is connected to the strip groove 311, and the two adjustment screws 38 are screwed into the corresponding adjustment screw holes 371, so that the two adjustment screws 38 are indirectly threadedly engaged with the action rod 31; the support blocks 37 provided on both sides of the adjustment section 33a can serve as adjustment supports for the adjustment screw 38, so that the adjustment screw 38 forms an indirect thread with the action rod 31. The screw 38 on the upper end of the rotating shaft 35 is rotated to form a stable adjustment force on the rotating shaft 35. The position adjustment of the roller 34 can be completed by rotating the adjusting screw 38, and the adjustment efficiency is high. Specifically, when adjusting, the adjusting screw 38 on the upper end of the rotating shaft 35 is first rotated to separate it from the rotating shaft 35, and then the adjusting screw 38 on the lower end of the rotating shaft 35 is rotated and pressed to allow the rotating shaft 35 and the roller 34 to move upward until the roller 34 contacts the top wall of the guide groove 361. Finally, the screw 38 on the upper end of the rotating shaft 35 is rotated again to act on the rotating shaft 35 again. The upper and lower ends of the rotating shaft 35 adjusted to the position are again supported by the two adjusting screws 38. Due to the self-locking effect of the thread matching, the two adjusting screws 38 can form a stable support for the rotating shaft 35 adjusted to the position.

[0064] like Figure 14 As shown, the second setting method of the adjustment member is as follows: the two leveling screws 28 are not set on the support block 37, but are directly set on the action rod 31. Specifically, the upper and lower ends of the adjustment section 33a are provided with adjustment screw holes 371, and the rotating shaft 35 is connected to the outside world through the adjustment screw holes 371; the two adjusting screws 38 are screwed into the corresponding adjusting screw holes 371, so that the two adjusting screws 38 are directly threadedly fitted on the action rod 31; the adjustment section 33a itself can serve as an adjustment support member for the adjusting screw 38, so that the adjusting screw 38 forms a direct threaded fit with the action rod 31, thereby forming a stable adjustment force on the rotating shaft 35; the same adjustment effect can also be achieved by rotating the leveling screw 38.

[0065] Furthermore, rollers 34 are installed on both sides of the action rod 31. Therefore, it is difficult to provide sufficient force for the rotating shaft 35 by relying solely on the two adjusting screws 38 acting on the upper and lower shafts 35. Therefore, in this embodiment, multiple adjusting screw holes 371 spaced left and right are provided at the upper and lower ends of the adjusting section 33a. Multiple adjusting screws 38 are inserted into the corresponding adjusting screw holes 371 to form multiple adjustment support points on the rotating shaft 35, so that the rotating shaft 35 on the adjusting section 33a can better provide rotational support for the roller 34.

[0066] Furthermore, in this embodiment, not all the rotating shafts 35 of the rollers 34 can float up and down. Specifically, the mounting section 33 includes an adjusting section 33a with a strip groove 311 and a non-adjusting section without a strip groove 311. The non-adjusting section also uses a rotating shaft 35 to provide rotational support for the roller 34. The difference is that a circular hole 312 is provided on the non-adjusting section that runs through the non-adjusting section horizontally and is used to pass the rotating shaft 35. The aperture of the circular hole 312 matches the outer diameter of the rotating shaft 35. Therefore, the roller 34 installed on the non-adjusting section cannot float up and down. After the action rod 31 is extended, an upper contact point is formed between the adjusting section 33a and the top wall of the guide groove 361, and a lower contact point is formed between the roller 34 at the non-adjusting section position and the bottom wall of the guide groove 361. In order to ensure the telescopic stability of the action rod 31, the ratio of the number of adjusting sections 33a to the number of non-adjusting sections is 1:1, so that the number of upper contact points is the same as the number of lower contact points, making the action rod 31 more stable when telescoping.

[0067] Furthermore, in order to prevent the action rod 31 from shifting laterally when it is extended or retracted, and to make the retraction process smoother, an anti-lateral displacement structure is provided on the support rail 36 and some rollers 34. For example, a guide wheel 315 that can rotate along a vertical axis is provided in each guide groove 361, and the outer peripheral surfaces of the two guide wheels 315 are respectively against the left and right sides of the action rod 31 to form a further telescopic guide for the action rod 31; for example, two rollers 34 rotatably connected to the two ends of the rotating shaft 35 form a roller group on the corresponding mounting section 33; wherein in at least one roller group on the action rod 31, the inner sides of the two rollers 34 are provided with a wheel edge 314 protruding from the outer peripheral edge of the roller 34, and the wheel edge 314 is attached to the inner side of the corresponding support rail 36 to prevent the action rod 31 from shifting laterally when it is extended or retracted.

[0068] Example 2: Figure 18 As shown, the difference between this embodiment and the above embodiment is that the adjusting member is an electric cylinder 372, and the electric cylinder 372 has a longitudinal push rod 373 that can be extended and retracted in the longitudinal direction. The longitudinal push rods 373 of the two electric cylinders 372 penetrate the action rod 31 and act on the upper and lower ends of the rotating shaft 35 respectively; the longitudinal push rods 373 of the electric cylinder 372 have a stable driving force, and the roller 34 can be adjusted to the corresponding position in the longitudinal direction and kept stable by simply controlling the extension and retraction of the longitudinal push rods 373 of the electric cylinder 372, and the adjustment efficiency is relatively high.

[0069] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the inventive purpose of the present invention, designs a structure and embodiment similar to the technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A constant contact sliding mechanism, characterized in that: Comprising: Support rails (36), symmetrically arranged in the left - right direction. A guiding groove (361) extending front - rear is formed on the inner side surface of the support rail (36), and the cross - sectional shape of the guiding groove (361) is a "C" shape opening towards the inside; An actuating rod (31), arranged between two support rails (36). The actuating rod (31) has a plurality of mounting sections (33) arranged at intervals in the front - rear direction. On the left and right sides of each mounting section (33), there are rollers (34) located in the corresponding guiding grooves (361); The rollers (34) roll in the guiding grooves (361), enabling the actuating rod (31) to extend forward beyond the outer end of the support rail (36); Among the plurality of mounting sections (33), there is at least one adjusting section (33a). A strip - shaped groove (311) extending longitudinally is provided on the adjusting section (33a), and the strip - shaped groove (311) penetrates the adjusting section (33a) in the left - right direction; A rotating shaft (35) is inserted into the strip - shaped groove (311), and the rotating shaft (35) can float up and down in the strip - shaped groove (311); The corresponding rollers (34) are rotatably connected to both ends of the rotating shaft (35); An adjusting component is provided on the adjusting section (33a). The adjusting component includes two adjusting members that can move longitudinally. The two adjusting members respectively abut against the upper and lower ends of the rotating shaft (35); By controlling the longitudinal movement of the adjusting members and acting on the up - and - down floating of the rotating shaft (35), the gap between the roller (34) and the top wall of the guiding groove (361) is eliminated, so as to ensure that the actuating rod (31) remains horizontal when extending beyond the outer end of the support rail (36).

2. A constant contact sliding mechanism according to claim 1, characterized in that: The adjusting member is an adjusting screw (38) that is directly or indirectly in threaded fit with the actuating rod (31).

3. A constant contact sliding mechanism according to claim 2, characterized in that: Support blocks (37) are provided on both the left and right sides of the adjusting section (33a), and the strip - shaped groove (311) penetrates the support blocks (37) in the left - right direction; Adjusting screw holes (371) communicating with the strip - shaped groove (311) are formed at both the upper and lower ends of each support block (37), and two adjusting screws (38) are screwed into the corresponding adjusting screw holes (371), making the two adjusting screws (38) indirectly in threaded fit with the actuating rod (31).

4. A constant contact sliding mechanism according to claim 2, characterized in that: Adjusting screw holes (371) are formed at both the upper and lower ends of the adjusting section (33a), and the rotating shaft (35) communicates with the outside through the adjusting screw holes (371); Two adjusting screws (38) are screwed into the corresponding adjusting screw holes (371), making the two adjusting screws (38) directly in threaded fit with the actuating rod (31).

5. A constant contact sliding mechanism according to claim 4, characterized in that: A plurality of adjusting screw holes (371) spaced left - right are provided at both the upper and lower ends of the adjusting section (33a), and a plurality of adjusting screws (38) are inserted into the corresponding adjusting screw holes (371) to form multiple adjusting support points on the rotating shaft (35).

6. The constant contact sliding mechanism according to claim 1, characterized in that: The ratio of the length of the support rail (36) to the length of the actuating rod (31) ranges from 1:1 to 10:

7.

7. The constant contact sliding mechanism according to claim 1, characterized in that: The adjusting member is an electric cylinder (372). The electric cylinder (372) has a longitudinal push rod (373) that can extend and retract longitudinally. The longitudinal push rods (373) of the two electric cylinders (372) penetrate the actuating rod (31) and respectively act on the upper and lower ends of the rotating shaft (35).

8. The constant contact sliding mechanism according to claim 1, characterized in that: The mounting section (33) comprises an adjusting section (33a) provided with a strip groove (311) and a non-adjusting section without a strip groove (311), and the ratio of the number of the adjusting sections (33a) to the number of the non-adjusting sections is 1:

1.

9. The constant contact sliding mechanism according to claim 1, characterized in that: A guide wheel (315) rotatable along a vertical axis is provided in each guide groove (361), and outer circumferential surfaces of the two guide wheels (315) respectively abut against the left and right sides of the actuating rod (31) to form a telescopic guide for the actuating rod (31).

10. The constant contact sliding mechanism according to claim 1, characterized in that: Two rollers (34) rotatably connected to both ends of the rotating shaft (35) form a roller group on the corresponding mounting section (33); in at least one roller group on the actuating rod (31), the inner sides of the two rollers (34) are provided with a wheel edge (314) protruding from the outer periphery of the roller (34), and the wheel edge (314) is attached to the inner side of the corresponding support rail (36) to prevent the actuating rod (31) from shifting in the lateral direction when the actuating rod (31) is extended or retracted.

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