Bidirectional pitch changing device

Abstract

The bidirectional pitch changing device comprises a bearing frame, a transverse pitch changing mechanism, a longitudinal pitch changing mechanism and a plurality of sliding parts, any sliding part is connected to the transverse pitch changing mechanism and the longitudinal pitch changing mechanism at the same time, and the transverse pitch changing mechanism and the longitudinal pitch changing mechanism are arranged on the bearing frame. And the transverse distance changing mechanism is used for synchronously changing the distance between the two adjacent sliding pieces arranged in the transverse direction, the longitudinal distance changing mechanism is used for synchronously changing the distance between the two adjacent sliding pieces arranged in the longitudinal direction, and the effect of improving the collaboration of transverse distance changing work and longitudinal distance changing work of the distance changing device is achieved.

Description

Technical Field

[0001] The present application relates to the field of pitch-changing devices, and in particular to a bidirectional pitch-changing device. Background Art

[0002] The advantage of the variable pitch device in the automated production line is that it improves production efficiency and flexibility. By automatically adjusting the working spacing and speed, it meets the needs of multi-variety and small batch production, while reducing manual operations and improving the stability and reliability of the production line.

[0003] In the existing variable distance device, several groups of material picking mechanisms are provided, and the several groups of material picking mechanisms are evenly distributed in the variable distance device. The variable distance device is controlled by a controller, so that the variable distance device drives the several groups of material picking mechanisms to move, so as to realize the adjustment of the horizontal spacing or the vertical spacing between the several groups of material picking mechanisms, thereby meeting the material picking requirements for workpieces with different arrangement spacings on the production line.

[0004] However, in actual applications, the pitch-changing device can only change the pitch in one direction, that is, the pitch-changing device must first change the pitch of several groups of feeding mechanisms in the horizontal or vertical direction. When the horizontal or vertical spacing between several groups of feeding mechanisms meets the requirements, another group of pitch-changing devices is used to drive several groups of feeding mechanisms to change the vertical or horizontal spacing again, until the horizontal and vertical spacing between several groups of feeding mechanisms meet the design requirements. In this process, the horizontal spacing change and the vertical spacing change are carried out step by step, which increases the downtime waiting time of the production line, and is not conducive to improving the efficiency of the pitch-changing device in controlling several groups of feeding mechanisms to pick up workpieces. There is room for improvement. Utility Model Content

[0005] In order to improve the coordination of the lateral pitch change and longitudinal pitch change of the pitch change device, the present application provides a bidirectional pitch change device.

[0006] The bidirectional pitch-changing device provided in this application adopts the following technical solution:

[0007] A bidirectional pitch-changing device comprises a carrier frame, a transverse pitch-changing mechanism, a longitudinal pitch-changing mechanism and a plurality of sliding members, any one of the sliding members being connected to the transverse pitch-changing mechanism and the longitudinal pitch-changing mechanism at the same time, the transverse pitch-changing mechanism and the longitudinal pitch-changing mechanism being respectively arranged on the carrier frame, the transverse pitch-changing mechanism being used for synchronously changing the distance between two adjacent sliding members arranged in the transverse direction, and the longitudinal pitch-changing mechanism being used for synchronously changing the distance between two adjacent sliding members arranged in the longitudinal direction.

[0008] By adopting the above technical scheme, the distance between two adjacent sliding members arranged along the transverse direction can be synchronously changed through the transverse pitch changing mechanism, thereby realizing the synchronous adjustment of the distance between several sliding members arranged along the transverse direction. At the same time, the distance between two adjacent sliding members arranged along the longitudinal direction can be synchronously changed through the longitudinal pitch changing mechanism, thereby realizing the synchronous adjustment of the distance between several sliding members arranged along the longitudinal direction. Compared with the unidirectional pitch changing device, the bidirectional pitch changing device of the present application can change the distance of the sliding members in both directions (that is, realize lateral pitch change or longitudinal pitch change for several sliding members), which plays a positive guiding role in enhancing the coordination of the lateral pitch change and longitudinal pitch change work of the pitch changing device.

[0009] Preferably, the transverse distance changing mechanism includes a transverse driving member, a first telescopic member and a plurality of first sliding rods, the transverse driving member is arranged on the bearing frame, the first telescopic member is arranged on the bearing frame, the plurality of first sliding rods are arranged in an intermittent manner along the width direction of the bearing frame, the plurality of sliding members are evenly distributed on the plurality of first sliding rods, and the sliding member slides with the first sliding rods, the plurality of first sliding rods are respectively connected to the first telescopic member, and the transverse driving member is used to drive the first telescopic member to contract or expand along the bearing frame; when the transverse driving member drives the first telescopic member to contract or expand along the bearing frame, the plurality of first sliding rods follow the first telescopic member to move closer to or farther away from each other along the length direction of the bearing frame.

[0010] By adopting the above technical solution, the first telescopic member is driven to contract or expand along the supporting frame by the transverse driving member. At this time, since several first sliding rods are respectively connected to the first telescopic member, the purpose of driving several first sliding rods to follow the first telescopic member to move synchronously along the supporting frame is achieved, so as to realize the synchronous distance change of the transverse distance between several sliding members.

[0011] Preferably, the longitudinal distance changing mechanism includes a longitudinal driving member, a second telescopic member and a plurality of second sliding rods, the longitudinal driving member is arranged on the supporting frame, the second telescopic member is arranged on the supporting frame, the plurality of second sliding rods are arranged in an intermittent manner along the length direction of the supporting frame, and any second sliding rod is movably inserted into the sliding member one by one along the length direction of the supporting frame, the plurality of second sliding rods are respectively connected to the second telescopic member, and the longitudinal driving member is used to drive the second telescopic member to contract or expand along the supporting frame; when the longitudinal driving member drives the second telescopic member to contract or expand along the supporting frame, the plurality of second sliding rods follow the second telescopic member to move closer to or farther away from each other along the width direction of the supporting frame.

[0012] By adopting the above technical solution, the second telescopic member is driven to contract or expand along the carrier frame by the longitudinal driving member. At this time, since a number of second sliding rods are respectively connected to the second telescopic member, and a number of sliders slide and cooperate with the number of second sliding rods, the purpose of driving the number of second sliding rods to follow the second telescopic member to move synchronously along the carrier frame is achieved, thereby achieving the synchronous variation of the longitudinal distance between the number of sliding members.

[0013] Preferably, a limiting assembly is provided on the supporting frame, and the limiting assembly includes a transverse limiting member and a longitudinal limiting member, the transverse limiting member is used to limit the travel distance of the first telescopic member contracting or expanding along the supporting frame, and the longitudinal limiting member is used to limit the travel distance of the second telescopic member contracting or expanding along the supporting frame.

[0014] By adopting the above technical scheme, the travel distance of contraction or expansion of the first telescopic member is limited by the transverse limit member, and the travel distance of contraction or expansion of the second telescopic member along the support frame is limited by the longitudinal limit member, so as to indirectly control the farthest point and the nearest point of several sliding members along the transverse spacing change, and / or indirectly control the farthest point and the nearest point of several sliding members along the longitudinal spacing change, thereby reducing the probability of damage to the first telescopic member and / or the second telescopic member due to excessive stroke, or the probability of collision between two adjacent sliding members due to excessive stroke.

[0015] Preferably, an adjustment groove is circumferentially provided on the upper surface of the bearing frame, and the adjustment groove is used to adjust the position of a transverse limiting member and / or a longitudinal limiting member provided on the bearing frame.

[0016] By adopting the above technical solution, the position of the transverse adjustment member and / or the longitudinal adjustment member along the carrier frame can be adjusted through the adjustment groove, thereby indirectly achieving the purpose of adjusting the distance between two adjacent sliding members, which is convenient for flexible adjustment of the variable distance spacing between two adjacent sliding members.

[0017] Preferably, the transverse driving member and the longitudinal driving member are electrically connected to a controller, and the transverse driving member and the longitudinal driving member can move synchronously, or the transverse driving member and the longitudinal driving member can move in steps.

[0018] By adopting the above technical scheme, the working states of the transverse driving member and the longitudinal driving member are controlled by the controller, that is: when the controller controls the transverse driving member and the longitudinal driving member to move synchronously, the first telescopic member and the second telescopic member move synchronously, thereby realizing the synchronous distance change between the transverse spacing and the longitudinal spacing between a plurality of sliding members; at the same time, when the controller controls the transverse driving member and the longitudinal driving member to move in steps, the first telescopic member and the second telescopic member move in steps, thereby realizing the step-by-step distance change between the transverse spacing or the longitudinal spacing between a plurality of sliding members, which has high practicality.

[0019] Preferably, it further comprises a material taking mechanism, the number of the material taking mechanisms is the same as the number of the sliding members, the material taking mechanisms are arranged on the sliding members, and the material taking mechanisms are used to take materials from the workpiece.

[0020] By adopting the above technical solution, the material taking mechanism arranged on the sliding member is used to take the workpiece, thereby realizing the variable spacing between the lateral spacing and / or longitudinal spacing of the workpiece. The mechanical structure is simple, easy to control and highly practical.

[0021] Preferably, any one of the sliding members is provided with a mounting plate, the mounting plate is used to mount the material taking mechanism, and waist-shaped grooves are symmetrically provided at the geometric center of the mounting plate along the length direction.

[0022] By adopting the above technical solution, the position of the material picking mechanism on the mounting plate can be adjusted through the waist-shaped groove, so that it can adapt to the material picking needs of workpieces of different sizes, and it is also convenient to replace different types of material picking mechanisms.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The bidirectional pitch changing device of the present application can change the pitch of the sliding member in both directions (i.e., realize lateral pitch changing or longitudinal pitch changing of a plurality of sliding members), which plays a positive guiding role in improving the coordination of the lateral pitch changing and longitudinal pitch changing work of the pitch changing device;

[0025] 2. By limiting the travel distance of the first telescopic member to shrink or expand through the transverse limiter, the farthest point and the closest point of the longitudinal spacing of the plurality of sliding members can be controlled indirectly, thereby reducing the probability of damage to the first telescopic member and / or the second telescopic member due to excessive travel, or the probability of collision between two adjacent sliding members due to excessive travel;

[0026] 3. The controller can control the lateral driving member and / or the longitudinal driving member to move synchronously or in steps, so as to achieve the purpose of synchronously changing or step-by-step changing the distance between several sliding members, thereby increasing the functionality of the pitch changing device and having high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a bidirectional pitch-changing device in an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the matching relationship between a support frame, a first driving cylinder, a transverse limit member and a first connecting plate in a bidirectional pitch-changing device according to an embodiment of the present application.

[0029] Figure 3 yes Figure 1 A schematic diagram of the structure of a bidirectional variable pitch device after hiding the material taking mechanism and the sliding part.

[0030] Figure 4 It is a schematic diagram of the coordination relationship between a group of sliding members and a first sliding rod, a second sliding rod and a material taking mechanism in a bidirectional pitch changing device according to an embodiment of the present application.

[0031] Description of the accompanying drawings: 1. Pitch-changing device; 2. Carrying frame; 3. Transverse pitch-changing mechanism; 31. Transverse driving member; 311. First driving cylinder; 312. Second driving cylinder; 32. First telescopic member; 321. First scissor-type telescopic arm; 322. Second scissor-type telescopic arm; 33. First sliding rod; 4. Longitudinal pitch-changing mechanism; 41. Longitudinal driving member; 411. Third driving cylinder; 412. Fourth driving cylinder; 42. Second telescopic member; 421. Third scissor-type telescopic arm Retractable arm; 422, fourth scissor-type telescopic arm; 43, second sliding rod; 5, sliding member; 6, limit assembly; 61, transverse limit member; 611, first limit block; 612, second limit block; 62, longitudinal limit member; 7, adjustment slot; 8, material picking mechanism; 81, material picking member; 811, double-leg pneumatic suction cup; 82, lifting cylinder; 9, mounting plate; 91, waist-shaped slot; 10, first connecting plate; 11, second connecting plate; 12, third connecting plate; 13, fourth connecting plate. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The present application embodiment discloses a bidirectional pitch-changing device 1. Figure 1 and Figure 3 A bidirectional pitch changing device 1 includes a carrier frame 2, a transverse pitch changing mechanism 3, a longitudinal pitch changing mechanism 4 and a plurality of sliding members 5, any one of the sliding members 5 is simultaneously connected to the transverse pitch changing mechanism 3 and the longitudinal pitch changing mechanism 4, the transverse pitch changing mechanism 3 and the longitudinal pitch changing mechanism 4 are respectively arranged on the carrier frame 2, the transverse pitch changing mechanism 3 is used to synchronously change the distance between two adjacent sliding members 5 arranged along the transverse direction, and the longitudinal pitch changing mechanism 4 is used to synchronously change the distance between two adjacent sliding members 5 arranged along the longitudinal direction.

[0034] Therefore, the implementation principle of a bidirectional pitch-changing device 1 in an embodiment of the present application is: the spacing between two adjacent sliding members 5 arranged along the transverse direction is synchronously changed through the transverse pitch-changing mechanism 3, thereby realizing the synchronous adjustment of the spacing between several sliding members 5 arranged along the transverse direction; at the same time, the distance between two adjacent sliding members 5 arranged along the longitudinal direction is synchronously changed through the longitudinal pitch-changing mechanism 4, thereby realizing the synchronous adjustment of the spacing between several sliding members 5 arranged along the longitudinal direction. Compared with the unidirectional pitch-changing device 1, the bidirectional pitch-changing device 1 of the present application can change the spacing of the sliding members 5 in both directions (that is, realize transverse pitch change or longitudinal pitch change for several sliding members 5), which plays a positive guiding role in enhancing the coordination of the transverse pitch change and longitudinal pitch change work of the pitch-changing device 1.

[0035] Reference Figure 1-Figure 3 The transverse pitch changing mechanism 3 includes a transverse driving member 31, a first telescopic member 32 and a plurality of first sliding rods 33. The transverse driving member 31 is arranged on the carrier frame 2, the first telescopic member 32 is arranged on the carrier frame 2, and the plurality of first sliding rods 33 are arranged in an intermittent manner along the width direction of the carrier frame 2. The plurality of sliding members 5 are evenly distributed on the plurality of first sliding rods 33, and the sliding members 5 slide and cooperate with the first sliding rods 33. The plurality of first sliding rods 33 are respectively connected to the first telescopic member 32. The transverse driving member 31 is used to drive the first telescopic member 32 to shrink or expand along the carrier frame 2; when the transverse driving member 31 drives the first telescopic member 32 to shrink or expand along the carrier frame 2, the plurality of first sliding rods 33 follow the first telescopic member 32 to move closer to or farther away from each other along the length direction of the carrier frame 2.

[0036] Specifically, the number of the sliding members 5 can also be adjusted according to actual needs and the size of the carrier frame 2, such as even numbers such as ten groups and twenty groups. For better explanation, in the present embodiment, the number of sliding members 5 is set to sixteen groups; at the same time, in occasions where the pitch change accuracy requirement is higher, the sliding member 5 can be a slider. In the present embodiment, the sliding member 5 uses a bidirectional linear bearing, that is, the sliding member 5 can slide along the installation position horizontally or longitudinally.

[0037] Furthermore, in the present embodiment, the first sliding rods 33 are provided with four, and each four sliding members 5 form a group, which are evenly distributed along the length direction of the first sliding rods 33 and movably arranged on the four first sliding rods 33. At this time, four groups of first sliding members 5 are arranged on any first sliding rod 33, and the distance between any sliding member 5 and the two adjacent groups of sliding members 5 is the same.

[0038] Correspondingly, in the present embodiment, the first telescopic member 32 is configured as a first scissor-type telescopic arm 321 and a second scissor-type telescopic arm 322. The first scissor-type telescopic arm 321 and the second scissor-type telescopic arm 322 have a telescopic function and are existing components. The specific composition and working principle are not described in detail here. The fixed end of the first scissor-type telescopic arm 321 is rotatably connected to the support frame 2 along the length direction of the support frame 2, and the fixed end of the second scissor-type telescopic arm 322 is rotatably connected to the support frame 2 along the width direction of the support frame 2 and away from the side of the first scissor-type telescopic arm 321. At this time, the free ends of the first scissor-type telescopic arm 321 and the second scissor-type telescopic arm 322 are slidably matched with the support frame 2, so that the free ends of the first scissor-type telescopic arm 321 and the second scissor-type telescopic arm 322 can extend or retract along the support frame 2.

[0039] It should also be noted here that, in the present embodiment, the first scissor-type telescopic arm 321 and the second scissor-type telescopic arm 322 have four main hinge points to adapt to the installation requirements of the four first sliding rods 33 .

[0040] Correspondingly, two ends of the four first sliding rods 33 are rotatably connected to the hinge points of the first scissor-type telescopic arm 321 and the second scissor-type telescopic arm 322 .

[0041] At the same time, the transverse driving member 31 can be a motor-screw combination and a rodless cylinder combination to achieve high-precision control requirements for the extension and retraction of the first scissors-type telescopic arm 321 and the second scissors-type telescopic arm 322. In the present embodiment, since sixteen groups of sliding members 5 are used for lateral pitch change and / or longitudinal pitch change fixation, in order to reduce the overall cost of the pitch change device 1, in the present embodiment, the transverse driving member 31 is set as the first driving cylinder 311.

[0042] The first driving cylinder 311 is installed on the carrier frame 2 along the length direction of the carrier frame 2 to reduce the swing of the first driving cylinder 311 during normal operation, and play a positive guiding role in the stability of the overall operation of the lifting pitch changing device 1. At the same time, the first connecting plate 10 and the second connecting plate 11 are arranged on the first sliding rod 33 away from the fixed ends of the first scissor-type telescopic arm 321 and the second scissor-type telescopic arm 322. The first connecting plate 10 and the second connecting plate 11 are respectively fixedly connected to the sliding members 5 located at the two ends of the length direction of the current first sliding rod 33, and the piston rod of the first driving cylinder 311 is fixedly connected to the first connecting plate 10.

[0043] Therefore, through the above process, when the piston rod of the first driving cylinder 311 extends / contracts, since the piston rod of the first driving cylinder 311 is fixedly connected to the first connecting plate 10, and the first connecting plate 10 is fixedly connected to the sliding member 5 on the first sliding rod 33, the first scissors-type telescopic arm 321 and the second scissors-type telescopic arm 322 are pushed to expand / contract along the carrier frame 2. Since the other three first sliding rods 33 are hinged at both ends along the length direction with the second scissors-type telescopic arm 322 of the first scissors-type telescopic arm 321, the four first sliding rods 33 follow the first scissors-type telescopic arm 321 and the second scissors-type telescopic arm 322 to synchronously extend or expand, thereby realizing the lateral distance change between the sixteen groups of sliding members 5 installed on the four first sliding rods 33.

[0044] On the other hand, the transverse driving member 31 further comprises a second driving cylinder 312, which is mounted on the carrier frame 2 away from the first driving cylinder 311. The first driving cylinder 311 and the second driving cylinder 312 are arranged in the same direction along the length direction of the carrier frame 2, and the first driving cylinder 311 and the second driving cylinder 312 are of the same model. The piston rod of the second driving cylinder 312 is fixedly connected to the second connecting plate 11. Therefore, the first driving cylinder 311 and the second driving cylinder 312 act synchronously, so that the first scissor-type telescopic arm 321 and the second Each scissors-type telescopic arm 322 has an independent driving source, which reduces the probability that when the first driving cylinder 311 drives the first scissors-type telescopic arm 321 to move along the carrier frame 2, the second scissors-type telescopic arm 322 is in a passive state, resulting in the first scissors-type telescopic arm 321 and the second scissors-type telescopic arm 322 being asynchronous in movement, and there is a distance deviation in the distance change, or the first driving cylinder 311 needs to withstand excessive force, resulting in damage to the first driving cylinder 311, thereby improving the stability of the distance change device 1 during operation.

[0045] Reference Figure 2 and Figure 3 The longitudinal pitch changing mechanism 4 includes a longitudinal driving member 41, a second telescopic member 42 and a plurality of second sliding rods 43. The longitudinal driving member 41 is arranged on the carrier frame 2, the second telescopic member 42 is arranged on the carrier frame 2, the plurality of second sliding rods 43 are arranged in an intermittent manner along the length direction of the carrier frame 2, and any second sliding rod 43 is movably arranged one by one in the sliding member 5 along the length direction of the carrier frame 2, and the plurality of second sliding rods 43 are respectively connected to the second telescopic member 42, and the longitudinal driving member 41 is used to drive the second telescopic member 42 to shrink or expand along the carrier frame 2; when the longitudinal driving member 41 drives the second telescopic member 42 to shrink or expand along the carrier frame 2, the plurality of second sliding rods 43 follow the second telescopic member 42 to move closer to or farther away from each other along the width direction of the carrier frame 2.

[0046] Specifically, it should be noted here that the longitudinal driving member 41 includes a third driving cylinder 411 and a fourth driving cylinder 412, the second telescopic member 42 includes a third scissors-type telescopic arm 421 and a fourth scissors-type telescopic arm 422, and the second sliding rod 43 is provided with four, and its installation method refers to the installation method of the transverse pitch changing mechanism 3.

[0047] The difference lies in that the third driving cylinder 411 and the fourth driving cylinder 412 are respectively installed at the two ends of the supporting frame 2 along the width direction of the supporting frame 2, and the third connecting plate 12 and the fourth connecting plate 13 are arranged on the second sliding rod 43 away from the fixed ends of the third scissors-type telescopic arm 421 and the fourth scissors-type telescopic arm 422. The third connecting plate 12 and the fourth connecting plate 13 are respectively fixedly connected to the sliding members 5 located at the two ends of the length direction of the current second sliding rod 43, the piston rod of the third driving cylinder 411 is fixedly connected to the third connecting plate 12, and the piston rod of the fourth driving cylinder 412 is fixedly connected to the fourth connecting plate 13. The cooperation of the third driving cylinder 411 and the fourth driving cylinder 412 is used to control the synchronous movement of the third scissors-type telescopic arm 421 and the fourth scissors-type telescopic arm 422, thereby realizing the longitudinal distance change of the four second sliding rods 43.

[0048] It should also be noted that when the two ends of the four first sliding rods are respectively connected to the first scissors-type telescopic arm 321 and the second scissors-type telescopic arm 322, and the two ends of the four second sliding rods 43 are respectively connected to the third scissors-type telescopic arm 421 and the fourth scissors-type telescopic arm 422, sixteen intersections with cross-arranged spatial positions are formed on the supporting frame 2, and sixteen groups of sliding members 5 are respectively installed on the intersections, and respectively cooperate with the first sliding rod 33 and the second sliding rod 43 for sliding.

[0049] Meanwhile, please continue to refer to Figure 3 The transverse driving member 31 and the longitudinal driving member 41 are electrically connected to the controller, and the transverse driving member 31 and the longitudinal driving member 41 can move synchronously, or the transverse driving member 31 and the longitudinal driving member 41 can move in steps.

[0050] Specifically, the controller may be a PLC (Programmable Logic Controller), which has programming capabilities and a human-computer interaction interface. It is an existing controller, and its specific composition and working principle are not described in detail here.

[0051] Therefore, the working states of the transverse driving member 31 and the longitudinal driving member 41 are controlled by the controller, and two working modes of the transverse driving member 31 and the longitudinal driving member 41 are described below.

[0052] ① When the controller controls the lateral drive member 31 and the longitudinal drive member 41 to move synchronously: the first drive cylinder 311 and the second drive cylinder 312 and the fourth drive cylinder 412 of the third drive cylinder 411 move synchronously, so that the first scissors-type telescopic arm 321 and the second scissors-type telescopic arm 322 shrink or expand synchronously along the length direction of the carrier frame 2. At the same time, the third scissors-type telescopic arm 421 and the fourth scissors-type telescopic arm 422 shrink or expand synchronously along the width direction of the carrier frame 2. Through this process, the four first sliding rods 33 will follow the first scissors-type telescopic arm 321 and the second scissors-type telescopic arm 322 to move closer to or away from each other, and the four second sliding rods 43 will follow the third scissors-type telescopic arm 421 and the fourth scissors-type telescopic arm 422 to move closer to or away from each other. At this time, the sixteen groups of sliding members 5 move closer to or away from each other synchronously along the carrier frame 2, thereby achieving the purpose of synchronously changing the lateral and longitudinal distances of the sixteen groups of sliding members 5.

[0053] ② When the controller controls the transverse driving member 31 and the longitudinal driving member 41 to move in steps, the first driving cylinder 311 and the second driving cylinder 312 move synchronously first, or the third driving cylinder 411 and the fourth driving cylinder 412 move synchronously first, so that the sixteen groups of sliding members 5 first change the pitch laterally and / or longitudinally, and then change the pitch longitudinally and / or transversely, which is highly practical.

[0054] Reference Figure 3 A limit assembly 6 is provided on the carrier frame 2, and the limit assembly 6 includes a transverse limit member 61 and a longitudinal limit member 62. The transverse limit member 61 is used to limit the travel distance of the first telescopic member 32 contracting or expanding along the carrier frame 2, and the longitudinal limit member 62 is used to limit the travel distance of the second telescopic member 42 contracting or expanding along the carrier frame 2.

[0055] It should be noted that in this embodiment, the composition and installation method of the transverse limit member 61 and the longitudinal limit member 62 are the same. The composition and installation method of the transverse limit member 61 are described in detail below, and the longitudinal limit member 62 is not described here.

[0056] Specifically, the transverse limit member 61 includes a first limit block 611 and a second limit block 612. The first limit block 611 is installed on a frame far away from the fixed end of the first scissor-type telescopic arm 321, and the second limit block 612 is installed between the first limit block 611 and the fixed end of the first scissor-type telescopic arm 321, and the second limit block 612 is close to the first limit block 611. When the second limit block 612 is installed on the carrier 2, the first connecting plate 10 is located between the first limit block 611 and the second limit block 612. When the first driving cylinder 3 When the piston rod of 11 drives the first connecting plate 10 to move between the first limit block 611 and the second limit block 612, the two side walls of the first connecting plate 10 can respectively abut against the first limit block 611 and the second limit block 612, that is: when the first connecting plate 10 moves to the farthest point between the first limit block 611 and the second limit block 612, the first connecting plate 10 will abut against the first limit block 611, and when the first connecting plate 10 and the second limit block 612 move to the closest point, the first connecting plate 10 will abut against the second limit block 612.

[0057] Therefore, through the cooperation of the first limit block 611 and the second limit block 612, the first driving cylinder 311 and the second driving cylinder 312 drive the first scissors-type telescopic arm 321 and the second scissors-type telescopic arm 322 to move to drive the four first sliding rods 33 to move closer to or away from each other. The travel is limited, and the farthest point and the nearest point of the longitudinal spacing change of several sliding members 5 are indirectly controlled, thereby reducing the probability of damage to the first scissors-type telescopic arm 321 and / or the second scissors-type telescopic arm 322 due to excessive travel, or the probability of collision between two adjacent sliding members 5 due to excessive travel, thereby playing a positive guiding role in the stability of the overall operation of the lifting and changing distance device 1.

[0058] For the corresponding Figure 2 and Figure 3 An adjustment groove 7 is circumferentially provided on the upper surface of the carrier frame 2 , and the adjustment groove 7 is used to adjust the position of the transverse limiting member 61 and / or the longitudinal limiting member 62 arranged on the carrier frame 2 .

[0059] Specifically, the adjustment groove 7 can be formed by a depression in the thickness direction of the surface of the support frame 2, and the contour of the adjustment groove 7 is set in a T-shape, so that the first limit block 611 and the second limit block 612 can be fixed to the support frame 2 with bolts, which is convenient for disassembly or installation of the first limit block 611 and the second limit block 612 along the support frame 2, thereby indirectly achieving the purpose of adjusting the variable distance stroke between two adjacent sliding members 5, and facilitating the flexible adjustment of the variable distance spacing between two adjacent sliding members 5.

[0060] Reference Figure 3 and Figure 4In this embodiment, the variable pitch device 1 further includes a picking mechanism 8, the number of the picking mechanisms 8 is the same as the number of the sliding members 5, the picking mechanisms 8 are arranged on the sliding members 5, and the picking mechanisms 8 are used to pick up the workpiece.

[0061] Since the components of the material taking mechanism 8 on any sliding member 5 are the same, and the material taking structure and the installation method of the sliding member 5 are the same, the composition and installation method of any set of sliding members 5 and material taking mechanism 8 are described in detail below.

[0062] Specifically, a mounting plate 9 is provided on the sliding member 5, and the mounting plate 9 is used to install the material picking mechanism 8, so that the material picking mechanism 8 can be stably installed on the sliding member 5 through the mounting plate 9, reducing the displacement of the material picking mechanism 8 along the sliding member 5 when working.

[0063] Specifically, the material picking mechanism 8 includes a material picking component 81, which can be a component such as an electric suction cup, a mechanical gripper, etc. that can pick up the workpiece. According to the nature of the workpiece, in this embodiment, the material picking component 81 uses a double-legged pneumatic suction cup 811, which is installed on the mounting plate 9, so that the double-legged pneumatic suction cup 811 can move synchronously with the sliding member 5.

[0064] At the same time, the material taking mechanism 8 also includes a material pushing cylinder 82, which is installed on the mounting plate 9, and the piston rod of the material pushing cylinder 82 is downward in the vertical direction.

[0065] Its function is that when the double-leg pneumatic suction cup 811 completes the workpiece picking up and needs to place the workpiece in the specified position again, due to the pressure difference, the double-leg pneumatic suction cup 811 may not be able to completely separate from the workpiece. Therefore, every time the double-leg pneumatic suction cup 811 completes a working cycle (picking up the workpiece-releasing the workpiece), the piston rod of the ejecting cylinder 82 will extend and retract once in the vertical direction, thereby applying force for the workpiece to fall off the double-leg pneumatic suction cup 811, so as to facilitate the workpiece to be quickly separated from the double-leg pneumatic suction cup 811.

[0066] Correspondingly, a waist-shaped groove 91 is symmetrically opened at the geometric center of the mounting plate 9 along the length direction. The waist-shaped groove 91 can be used to adjust the distance between the two suction feet of the double-foot pneumatic suction cup 811, so that it can adapt to the material picking needs of workpieces of different sizes, and it is also convenient to replace different types of material picking parts 81.

[0067] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A bidirectional pitch-changing device (1), characterized in that: The invention comprises a carrier frame (2), a transverse pitch changing mechanism (3), a longitudinal pitch changing mechanism (4) and a plurality of sliding members (5), wherein any one of the sliding members (5) is simultaneously connected to the transverse pitch changing mechanism (3) and the longitudinal pitch changing mechanism (4), the transverse pitch changing mechanism (3) and the longitudinal pitch changing mechanism (4) are respectively arranged on the carrier frame (2), the transverse pitch changing mechanism (3) is used for synchronously changing the distance between two adjacent sliding members (5) arranged in the transverse direction, and the longitudinal pitch changing mechanism (4) is used for synchronously changing the distance between two adjacent sliding members (5) arranged in the longitudinal direction.

2. A bidirectional pitch-changing device (1) according to claim 1, characterized in that: The transverse pitch changing mechanism (3) comprises a transverse driving member (31), a first telescopic member (32) and a plurality of first sliding rods (33); the transverse driving member (31) is arranged on the carrier frame (2); the first telescopic member (32) is arranged on the carrier frame (2); the plurality of first sliding rods (33) are arranged in an intermittent manner along the width direction of the carrier frame (2); the plurality of sliding members (5) are evenly distributed on the plurality of first sliding rods (33); and the sliding members (5) and the first sliding rods (33) are connected to each other. The rod (33) is slidably matched, and a plurality of the first sliding rods (33) are respectively connected to the first telescopic member (32), and the transverse driving member (31) is used to drive the first telescopic member (32) to contract or expand along the carrier frame (2); when the transverse driving member (31) drives the first telescopic member (32) to contract or expand along the carrier frame (2), a plurality of the first sliding rods (33) follow the first telescopic member (32) to move closer to or farther away from each other along the length direction of the carrier frame (2).

3. A bidirectional pitch-changing device (1) according to claim 2, characterized in that: The longitudinal distance changing mechanism (4) comprises a longitudinal driving member (41), a second telescopic member (42) and a plurality of second sliding rods (43), wherein the longitudinal driving member (41) is arranged on the carrier frame (2), the second telescopic member (42) is arranged on the carrier frame (2), the plurality of second sliding rods (43) are arranged in an intermittent manner along the length direction of the carrier frame (2), and any of the second sliding rods (43) are movably arranged one by one in the sliding member (5) along the length direction of the carrier frame (2), and the plurality of second sliding rods (43) are respectively connected to the second telescopic member (42), and the longitudinal driving member (41) is used to drive the second telescopic member (42) to contract or expand along the carrier frame (2); when the longitudinal driving member (41) drives the second telescopic member (42) to contract or expand along the carrier frame (2), the plurality of second sliding rods (43) follow the second telescopic member (42) to move closer to or farther from each other along the width direction of the carrier frame (2).

4. A bidirectional pitch-changing device (1) according to claim 3, characterized in that: A limit assembly (6) is provided on the support frame (2), and the limit assembly (6) comprises a transverse limit member (61) and a longitudinal limit member (62). The transverse limit member (61) is used to limit the travel distance of the first telescopic member (32) in contraction or expansion along the support frame (2), and the longitudinal limit member (62) is used to limit the travel distance of the second telescopic member (42) in contraction or expansion along the support frame (2).

5. A bidirectional pitch-changing device (1) according to claim 4, characterized in that: An adjustment groove (7) is circumferentially provided on the upper surface of the support frame (2), and the adjustment groove (7) is used to adjust the position of a transverse limiting member (61) and / or a longitudinal limiting member (62) provided on the support frame (2).

6. A bidirectional pitch-changing device (1) according to claim 4, characterized in that: The transverse driving member (31) and the longitudinal driving member (41) are electrically connected to a controller, and the transverse driving member (31) and the longitudinal driving member (41) can act synchronously, or the transverse driving member (31) and the longitudinal driving member (41) can act in steps.

7. A bidirectional pitch-changing device (1) according to claim 4, characterized in that: It also comprises a material taking mechanism (8), the number of the material taking mechanisms (8) is the same as the number of the sliding members (5), the material taking mechanism (8) is arranged on the sliding member (5), and the material taking mechanism (8) is used to take material from the workpiece.

8. A bidirectional pitch-changing device (1) according to claim 7, characterized in that: Any one of the sliding members (5) is provided with a mounting plate (9), and the mounting plate (9) is used to mount the material taking mechanism (8). The mounting plate (9) is symmetrically provided with waist-shaped grooves (91) along the geometric center in the length direction.

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