Guide rail device for linear motor device

Abstract

The utility model relates to a guide rail device (1) used for a linear motor device, the guide rail device comprises a sensor assembly (11) and a section bar component (12), the section bar component is provided with a first side edge (121), a second side edge (122) and a bottom edge (123), the first side edge (121) and the second side edge (122) are oppositely arranged and are connected with each other through the bottom edge (123), and the first side edge (121) and the second side edge (122) are connected with each other through the bottom edge (123). The first side edge (121) comprises a first stopping part (1211) protruding towards the second side edge (122), the sensor assembly (11) is clamped and fixed with the first stopping part (1211) at least through the bottom edge (123), and a first groove (1212) opposite to the sensor assembly (11) is formed in the first side edge (121). The utility model further relates to a linear motor device comprising the guide rail device.

Description

Technical Field

[0001] The utility model relates to a guide rail device for a linear motor device. In addition, the utility model also relates to a linear motor device comprising the guide rail device. Background Art

[0002] Linear motor devices have been widely used as a component for realizing linear reciprocating motion, and are also commonly referred to as push rod motor devices. Traditional linear motor devices usually include a motor, a lead screw, a linear motion component, that is, generally a linear moving part and a guide part. The motor drives the lead screw to rotate, and the linear moving part engaged with the thread of the lead screw can thus reciprocate linearly along the guide part. The movement of the linear moving part is generally limited by a travel sensor.

[0003] In existing designs, cables leading out from the travel sensor are usually directly exposed to the outside without a dedicated wiring space, so there is a lack of protection for the cables and other electronic components of the travel sensor.

[0004] In addition, since the guide parts are usually made of metal, when the strength of the guide parts is poor and the guide stroke is designed to be long, the existing guide part design also has the problem that the guide parts are easy to bend when subjected to load due to insufficient structural strength, which makes it impossible for the linear moving part to move accurately along a straight line. The nonlinear motion defect of the linear moving part leads to adverse fluctuations in the motor current and motion jamming. Utility Model Content

[0005] The technical problem to be solved by the utility model is to realize a guide rail device for a linear motor device and a linear motor device including such a guide rail device, thereby overcoming the above-mentioned disadvantages existing in the prior art.

[0006] The above technical problem is solved by a guide rail device for a linear motor device. According to the utility model, the guide rail device includes a sensor assembly and a profile component, the profile component having a first side edge, a second side edge and a bottom edge, wherein the first side edge and the second side edge are arranged relative to each other and connected to each other through the bottom edge, wherein the first side edge includes a first stop portion protruding toward the second side edge, wherein the sensor assembly is clamped at least by the bottom edge and the first stop portion, and a first groove opposite to the sensor assembly is provided in the first side edge.

[0007] According to the utility model, the guide rail device includes a sensor assembly and a profile component, wherein the profile component has a first side edge, a second side edge and a bottom edge, wherein the first side edge and the second side edge are arranged opposite to each other and connected to each other through the bottom edge. In other words, the profile component basically has a U-shaped cross section. Such a profile has good bending and torsion resistance, can ensure the overall stability of the guide rail device and avoid deformation, which is very conducive to the guide member to implement precise linear guiding movement on the guide rail device.

[0008] The first side edge includes a first stopper protruding toward the second side edge, wherein the sensor assembly is at least fixed by the bottom edge and the first stopper. With this design, the sensor assembly arranged inside the profile component can be well protected, on the one hand, to prevent it from being damaged by other external components, and on the other hand, to prevent other external components from accidentally touching the sensor assembly and causing malfunction of the linear motor device.

[0009] A first groove opposite to the sensor assembly is provided in the first side, thereby increasing the distance between the first side and the sensor assembly, preventing leakage of the sensor assembly and thus ensuring smooth operation. In addition, the groove is also conducive to forming a receiving space for routing and wiring of cables led out of the sensor assembly, thereby better protecting the cables arranged in the receiving space and other components of the sensor assembly.

[0010] In an advantageous design, the guide rail device may include at least one end cap, wherein the end cap is fixed to the longitudinal end of the profile component by means of at least one fixing device. By fixing the end cap to the longitudinal end of the profile component, the anti-deformation strength and stability of the profile component can be enhanced, and the interior of the profile component can be sealed to prevent foreign matter from entering, which is conducive to extending the service life of the guide rail device. Advantageously, the profile component includes at least one receiving portion for receiving the fixing device.

[0011] In an advantageous design, the receiving portion can be at least partially defined by a protrusion protruding from the first side edge and / or from the second side edge. Thus, the receiving portion can be integrated with the profile part itself, avoiding the use of additional components for accommodating the fixing device, saving installation costs.

[0012] In an advantageous design, the protrusion may include a first protrusion, a second protrusion and a third protrusion, wherein the free end of the first side edge is bent toward the second side edge to form the first protrusion, and the second protrusion and the third protrusion are respectively configured to protrude from the second side edge into the profile component. Thus, a receiving portion for receiving a fixing device is realized in a simple manner by configuring the protrusions on the first side edge and the second side edge.

[0013] In an advantageous design, the fixing means may include screws. It is also conceivable to use rivets, pins, etc. as fixing means.

[0014] In an advantageous design, the bottom edge of the profile part may be provided with at least one guide protrusion and / or guide groove on the surface facing the inside of the profile part and on the surface facing away from the inside of the profile part. Providing at least one guide protrusion and / or guide groove on both surfaces of the bottom edge of the profile part, i.e., the surface facing the inside of the profile part and the surface facing away from the inside of the profile part, can not only guide the linear motion of the slider guided by the guide rail device so that the slider can stably move along the straight line, but also can additionally strengthen the profile part itself.

[0015] In an advantageous design, in the first groove, the wall thickness of the first side can be between 2.1 mm and 3.6 mm. Compared with the existing design, the wall thickness of the profile component between 2.1 mm and 3.6 mm can achieve a more stable structure, which makes the profile component or the guide rail device less likely to bend and deform when subjected to external loads, further ensuring that the slider can move smoothly in a straight line, and also making the operating current more stable. Here, the applicant found that it is more advantageous when the wall thickness of the first side in the first groove is 2.6 mm. On the one hand, this wall thickness achieves a strengthening effect, and on the other hand, it does not cause the weight of the profile component or the guide rail device to be too large.

[0016] In an advantageous design, the profile component is in one piece. The one piece design can improve the structural strength and avoid the disadvantages caused by assembling parts, such as reduced precision caused by tolerance.

[0017] In an advantageous embodiment, the profile part can be designed as an extruded part, which can achieve lower production costs and facilitate the realization of complex cross sections of the profile part.

[0018] In an advantageous embodiment, the profile part can be produced from an aluminum alloy or aluminum.

[0019] In an advantageous design, the first stop portion may have a second groove. By designing the second groove in the first stop portion, the sensor component can be more conveniently positioned when the sensor component is installed by engaging the sensor component through the second groove, and the sensor component can be more stably fixed on the other hand. In addition, for the stop portion itself, a certain degree of elasticity can be achieved in the structure through such a groove, which is convenient for adapting and clamping sensor components of different sizes. In this case, it is advantageous that the bottom edge may have a third groove opposite to the second groove, wherein the sensor component is clamped by means of the second groove and the second groove. As a result, the sensor component can be easily inserted into the second groove in the first stop portion and the third groove in the bottom edge opposite to the second groove, which achieves very simple installation. And thereby, stable clamping of the sensor component can be achieved in two directions.

[0020] In an advantageous design, the bottom edge of the profile part may have a fifth protrusion protruding toward the inside of the profile part, and the fifth protrusion is configured as a stop for the sensor assembly. By designing the fifth protrusion on the bottom edge of the profile part, the stop of the sensor assembly on the bottom edge can be easily achieved.

[0021] In an advantageous design, the sensor assembly may include a travel sensor and a sensor bracket, wherein the travel sensor is mounted on the side of the sensor bracket facing away from the first groove, and the sensor bracket is spaced apart from the bottom of the first groove. The travel sensor is formed by the travel sensor and the sensor bracket, which firstly facilitates the installation of the travel sensor and secondly facilitates the replacement of a damaged sensor. Installing the travel sensor on the side of the sensor bracket facing away from the first groove is conducive to detecting the stroke of the slider. The distance between the sensor bracket and the bottom of the first groove can ensure a safe distance between the live parts of the sensor and the profile structure.

[0022] In an advantageous embodiment, the sensor holder can be designed as a plastic part, thereby providing reliable insulation for live parts of the sensor.

[0023] In an advantageous design, the sensor bracket may have an I-shaped cross section. The sensor bracket with an I-shaped cross section has a simple structure, is easy to manufacture, and is also convenient to install in the profile component according to the utility model.

[0024] In an advantageous design, the sensor bracket may have a C-shaped cross section and have a cross beam and a first leg and a second leg formed by bending from both ends of the cross beam according to the cross section shape. The sensor assembly is clamped between the first side and the fifth protrusion, and is clamped between the first protrusion and the bottom edge through the outer side surfaces of the first leg and the second leg. Here, the sensor bracket is designed to have a C-shaped cross section and is clamped between the first side and the fifth protrusion in the horizontal direction, that is, parallel to the bottom edge of the profile structure; and is clamped between the first protrusion and the bottom edge in the vertical direction, that is, perpendicular to the bottom edge of the profile structure. This not only realizes stable positioning and holding of the sensor bracket and the sensor assembly, but also forms a receiving space through the C-shaped cross section of the sensor bracket and the side wall of the profile component, which not only further ensures a safe distance between the live parts of the sensor and the side wall of the profile component, but also allows the lead connector of the travel sensor and the cables led from the travel sensor, such as signal cables or power cables, to be arranged in the receiving space, thereby achieving better protection for them.

[0025] In an advantageous embodiment, the travel sensor can be designed as a microswitch.

[0026] In addition, the above technical problem is also solved by a linear motor device according to the present invention, wherein the linear motor device may include the guide rail device according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is described below according to the preferred embodiments in conjunction with the accompanying drawings:

[0028] In the attached figure:

[0029] Figure 1 A three-dimensional view of a linear motor device according to one embodiment of the present utility model is shown.

[0030] Figure 2 A side view showing an end cover of a guide rail device according to one embodiment of the present utility model is shown.

[0031] Figure 3 A cross-sectional view showing a profile component of a guide rail device according to one embodiment of the present invention,

[0032] Figure 4 Show Figure 3 A perspective partial view of the profile component shown,

[0033] Figure 5 A cross-sectional view showing a profile component of a guide rail device according to one embodiment of the present invention,

[0034] Figure 6 Two different designs of the sensor assembly according to the present invention are shown.

[0035] Figure 7 A cross-sectional view of a guide rail device according to one embodiment of the present invention is shown.

[0036] Elements with the same or similar functions in the figures are denoted by the same reference numerals. DETAILED DESCRIPTION

[0037] Figure 1 The linear motor device shown in the figure mainly includes a guide rail device 1, a motor 2, and a slider 3. The motor 2 is installed on one end of the guide rail device 1 along the longitudinal direction A thereof. The guide rail device 1 has an end cover 4 on the other end. The slider 3 is arranged on the guide rail device 1 and is guided along the guide rail device 1. The linear motor device also includes a screw accommodated inside the guide rail device. The motor 2 drives the screw to rotate so that the slider 3 engaged with the screw makes a linear reciprocating motion on the guide rail device 1 along the longitudinal direction A of the guide rail device 1. The movement of the slider 3 on the guide rail device 1 is detected and controlled by a travel sensor or a travel switch of the guide rail device.

[0038] The guide rail device 1 includes a sensor component 11 and a profile component 12, wherein the profile component has a first side 121, a second side 122 and a bottom 123, wherein the first side 121 and the second side 122 are arranged opposite to each other and connected to each other through the bottom 123, wherein the first side 121 includes a first stop portion 1211 protruding toward the second side 122, wherein the sensor component 11 is fixed at least by the bottom 123 and the first stop portion 1211, and a first groove 1212 opposite to the sensor component 11 is provided in the first side 121.

[0039] The guide rail device 1 includes an end cap 4, wherein the end cap 4 is fixed to the longitudinal end of the profile part 12 by means of at least one fixing device (not shown in the figure). The end cap 4 can at least partially close the profile part, thereby preventing external factors from affecting the internal structure of the profile part, such as foreign matter entering and obstructing the operation of the screw or the slider. In the present embodiment, the end cap 4 has three through holes 41, 42 and 43 for fixing devices. Of course, those skilled in the art can also set other numbers of fixing devices as needed. In addition, an opening 44 for leading out the cable of the sensor assembly 11 is also arranged on the end cap 4, and the opening 44 can be closed by a cover adapted to the cable.

[0040] The profile part 12 includes at least one receiving portion for receiving the fixing device. In this example, three receiving portions are provided. Of course, those skilled in the art may also provide other numbers of receiving portions as required. As shown in the figure, the receiving portion is at least partially defined by a protrusion protruding from the first side 121 and / or from the second side 122. Here, the protrusion exemplarily includes a first protrusion 1213, a second protrusion 1221, a third protrusion 1222 and a fourth protrusion 1223, wherein the free end of the first side 121 is bent toward the direction of the second side 122 to form the first protrusion 1213, the free end of the second side 122 is bent toward the direction of the first side 121 to form the second protrusion 1221, and the third protrusion 1222 and the fourth protrusion 1223 are respectively configured to protrude from the second side 122 into the profile part 12 at intervals from each other. As shown in the figure, the first protrusion 1213, a part of the first side 121 adjacent thereto, and a part of the first stopper 1211 together form a first receiving portion; the second protrusion 1221, a part of the second side 122 adjacent thereto, and the third protrusion 1222 together form a second receiving portion; the fourth protrusion 1223, a part of the second side 122 adjacent thereto, and a part of the bottom 123 together form a third receiving portion. Of course, in an embodiment not shown, it is also conceivable that instead of using the third protrusion 1222 and the fourth protrusion 1223 which are independent of each other, they are replaced by only one auxiliary protrusion, which protrudes from the second side 122 into the profile part 12, so as to form a second receiving portion with the second protrusion 1221 on one side, and form a third receiving portion with a part of the second side 122 adjacent thereto and a part of the bottom 123 on the other side.

[0041] The first accommodating portion, the second accommodating portion and the third accommodating portion can be configured as the same or different in terms of their size and shape as required. Here, those skilled in the art can also think of other shapes, as long as they are suitable for installing the fixing device so as to fix the end cover 4.

[0042] The fixing device includes a screw. In addition, those skilled in the art may also conceive of other suitable fixing devices, such as pins, rivets, etc.

[0043] The bottom edge 123 of the profile part 12 is provided with at least one guide protrusion 1231 and / or guide groove 1232 on the surface facing the inside of the profile part 12 (i.e., the inner side surface) and on the surface facing away from the inside of the profile part 12 (i.e., the outer side surface). By providing the guide protrusion 1231 and / or the guide groove 1232 on both the inner and outer side surfaces of the bottom edge 123, stable linear guidance of the slider 3 can be achieved, and the overall strength of the profile part can also be enhanced.

[0044] In the first groove 1212 , the wall thickness of the first side 121 is between 2.1 mm and 3.6 mm, and preferably is 2.6 mm.

[0045] The profile part 12 is constructed as an extruded part. As shown in the figure, the cross section of the profile part 12 is relatively complex, which can be conveniently achieved by constructing it as an extruded part.

[0046] The profile part 12 is made of an aluminum alloy or aluminum.

[0047] The first stopper 1211 has a second groove 12111. The second groove 12111 can be used to fix the sensor assembly. In addition, the first stopper 1211 itself can have a certain degree of elasticity through the second groove 12111, thereby clamping the sensor assembly and adapting to sensor assemblies of different sizes.

[0048] The bottom edge 123 has a third groove 1234 opposite to the second groove 12111, wherein the sensor assembly 11 is fixed by means of the second groove 12111 and the third groove 1234. In this way, the sensor assembly 11 can be reliably fixed in the upper, lower, left, and right directions in the view.

[0049] The bottom edge 123 of the profile part 12 has a fifth protrusion 1233 protruding toward the inside of the profile part 12, and the fifth protrusion 1233 is configured as a stopper for the sensor assembly 11. In this design, the sensor assembly 11 may no longer be fixed by the second groove 12111 and the third groove 1234. However, in this case, the second groove 12111 and the third groove 1234 may still be retained to save materials.

[0050] exist Figure 6 Two different designs of the sensor assembly 11 according to the present invention are shown in FIG. Figure 6 The upper view shows a side view of the sensor assembly 11 with a C-shaped cross-section sensor holder and a cross-sectional view thereof. Figure 6 The lower view shows a sensor assembly with an I-shaped cross-section sensor holder.

[0051] The sensor assembly 11 includes a travel sensor 111 and a sensor bracket 112. The travel sensor 111 is mounted on the side of the sensor bracket 112 that is away from the first groove 1212, and the sensor bracket is spaced apart from the bottom of the first groove. In the example shown in the figure, two travel sensors 111 are arranged on the sensor bracket 112. When the slider 3 reaches the corresponding position, it can be detected by the two travel sensors, thereby realizing the control of the linear motion of the slider 3, such as stopping the linear motion of the slider 3, or making the slider 3 perform linear motion in the opposite direction. The travel sensor can be designed as an electrical, optical, mechanical, or magnetic sensor, for example. In addition, the sensor bracket 112 can be constructed as a plastic part. Here, the travel sensor can be constructed as a micro switch or a travel switch.

[0052] The sensor bracket 112 may have an I-shaped cross section. Such a sensor bracket has a simple structure and is easy to manufacture.

[0053] The sensor bracket 112 may also have a C-shaped cross section and has a cross beam 1123 and a first leg 1121 and a second leg 1122 formed by bending from both ends of the cross beam according to the cross section shape. The sensor assembly 11 is clamped between the first side 121 and the fifth protrusion 1233, and is clamped between the first stopper 1211 and the bottom 123 through the outer side surfaces of the first leg 1121 and the second leg 1122. Specifically, in a direction parallel to the bottom 123 of the profile member 12, the entire sensor assembly 11 is supported on the first side 121 of the profile member 12 through the first leg 1121 and the second leg 1122, and oppositely, the edge of the travel sensor 111 abuts against the fifth protrusion 1233. In a direction perpendicular to the bottom 123 of the profile member 12, the entire sensor assembly 11 is clamped between the first stopper 1211 and the bottom 123 through the outer side surfaces of the first leg 1121 and the second leg 1122. Through this design, a receiving space R is enclosed between the first side 121 and the sensor assembly 11 or the sensor bracket 112. The receiving space R not only realizes the spacing between the stroke sensor 111 and the first side 121 of the profile part 12 to form an electrical safety distance, but also the electrical connector E of the stroke sensor and the cable leading out from the stroke sensor 111 can also be arranged in the receiving space R, thereby achieving better protection for them.

[0054] Although the present invention has been described in detail through the preferred embodiments, the present invention is not limited to the disclosed embodiments, and a technician may make other changes without departing from the protection scope of the present invention.

[0055] List of reference numerals:

[0056] 1 Guide rail device

[0057] 11 Sensor components

[0058] 111 Travel sensor

[0059] 112 Sensor bracket

[0060] 1121 First Leg

[0061] 1122 Second Leg

[0062] 1123 Beam

[0063] 12 Profile parts

[0064] 121 First side

[0065] 1211 First stopper

[0066] 12111 Second groove

[0067] 1212 First Groove

[0068] 1213 First protrusion

[0069] 122 Second side

[0070] 1221 Second protrusion

[0071] 1222 The third protrusion

[0072] 1223 The Fourth Prominence

[0073] 123 bottom edge

[0074] 1231 Guide protrusion

[0075] 1232 Guide groove

[0076] 1233 Fifth Prominence

[0077] 1234 The third groove

[0078] 2 Motor

[0079] 3 Sliders

[0080] 4 End caps

[0081] 41 Through Holes

[0082] 42 Through Holes

[0083] 43 Through Holes

[0084] 44 Opening

[0085] A Vertical

[0086] R Accommodation space

[0087] E Electrical connector.

Claims

1. A guide rail device (1) for a linear motor device, characterized in that: The guide rail device comprises a sensor component (11) and a profile component (12), wherein the profile component has a first side edge (121), a second side edge (122) and a bottom edge (123), wherein the first side edge (121) and the second side edge (122) are arranged opposite to each other and connected to each other via the bottom edge (123), wherein the first side edge (121) comprises a first stop portion (1211) protruding toward the second side edge (122), wherein the sensor component (11) is fixed at least via the bottom edge (123) and the first stop portion (1211), and a first groove (1212) opposite to the sensor component (11) is provided in the first side edge (121).

2. The guide rail arrangement (1) according to claim 1, characterized in that The guide rail arrangement (1) comprises at least one end cap (4), wherein the end cap (4) is fastened to a longitudinal end of the profile part (12) by means of at least one fastening means.

3. The guide rail device (1) according to claim 2, characterized in that The profile part (12) comprises at least one receptacle for receiving the fixing means.

4. The guide rail arrangement (1) according to claim 3, characterized in that The receiving portion is at least partially defined by a protrusion protruding from the first side edge (121) and / or from the second side edge (122).

5. The guide rail arrangement (1) according to claim 4, characterized in that The protrusions include a first protrusion (1213), a second protrusion (1221), a third protrusion (1222) and a fourth protrusion (1223), wherein the free end of the first side edge (121) is bent toward the second side edge (122) to form the first protrusion (1213), the free end of the second side edge (122) is bent toward the first side edge (121) to form the second protrusion (1221), and the third protrusion (1222) and the fourth protrusion (1223) are respectively constructed to protrude from the second side edge (122) into the profile component (12).

6. The guide rail arrangement (1) according to claim 2, characterized in that The fixing means comprises a screw.

7. The guide rail arrangement (1) according to claim 1, characterized in that The bottom edge (123) of the profile part (12) is provided with at least one guide protrusion (1231) and / or a guide groove (1232) on the surface facing the inside of the profile part (12) and on the surface facing away from the inside of the profile part (12).

8. The guide rail arrangement (1) according to claim 1, characterized in that In the first groove (1212), the wall thickness of the first side edge (121) is between 2.1 mm and 3.6 mm.

9. The guide rail arrangement (1) according to claim 1, characterized in that In the first groove (1212), the wall thickness of the first side edge (121) is 2.6 mm.

10. The guide rail arrangement (1) according to claim 1, characterized in that The profile part (12) is designed as an extruded part.

11. The guide rail arrangement (1) according to claim 1, characterized in that The profile component (12) is made of aluminum alloy or aluminum.

12. The guide rail arrangement (1) according to claim 1, characterized in that The first stopper (1211) has a second groove (12111).

13. The guide rail arrangement (1) according to claim 12, characterized in that The bottom edge (123) has a third groove opposite to the second groove (12111), wherein the sensor component (11) is fixed by means of the second groove and the third groove.

14. The guide rail arrangement (1) according to claim 1, characterized in that The bottom edge (123) of the profile component (12) has a fifth protrusion (1233) protruding toward the inside of the profile component (12), and the fifth protrusion (1233) is configured as a stopper for the sensor component (11).

15. The guide rail arrangement (1) according to claim 14, characterized in that The sensor assembly (11) comprises a travel sensor (111) and a sensor bracket (112); the travel sensor (111) is mounted on a side of the sensor bracket (112) facing away from the first groove (1212), and the sensor bracket maintains a distance from the bottom of the first groove.

16. The guide rail arrangement (1) according to claim 15, characterized in that The sensor holder (112) is designed as a plastic part.

17. The guide rail arrangement (1) according to claim 15, characterized in that The sensor bracket has an I-shaped cross-section.

18. The guide rail arrangement (1) according to claim 15, characterized in that The sensor bracket (112) has a C-shaped cross section and has a cross beam (1123) and a first side leg (1121) and a second side leg (1122) formed by bending from both ends of the cross beam according to the cross section shape; the sensor assembly (11) is clamped between the first side edge (121) and the fifth protrusion (1233), and is clamped between the first stop portion (1211) and the bottom edge (123) through the outer side surfaces of the first side leg (1121) and the second side leg (1122).

19. The guide rail arrangement (1) according to claim 15, characterized in that The travel sensor is designed as a micro switch.

20. A linear motor device, characterized in that: The linear motor device comprises the guide rail device according to any one of claims 1 to 19.

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