Rack transmission guide mechanism

Abstract

The utility model belongs to the field of automobile ornament manufacturing, and particularly relates to a rack transmission guide mechanism which comprises a power assembly, a rack, a gear transmission assembly, a guide fixing plate, a supporting column, a side face guide bearing assembly, a rear guide bearing assembly and square steel. The middle of the top end of the power assembly is fixedly connected with the bottom of the rack, the left guide fixing plate and the right guide fixing plate are horizontally arranged, the rear sides of the left guide fixing plate and the right guide fixing plate are fixed to the upper side of the square steel, the gear transmission assembly is fixed to the front portions of the two guide fixing plates, and the upper portion of the rack penetrates through the middle of the two guide fixing plates and is located behind the gear transmission assembly. The rear guide bearing assembly makes contact with the rear face of the rack, and side face guide bearing assemblies are fixed to the two guide fixing plates and make contact with the two side faces of the rack. The left side, the right side and the rear side of the rack are guided through the bearings, and the problem that rack transmission guiding is not stable is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of automobile ornament manufacturing, and particularly relates to a rack gear transmission guide mechanism of a furnace door opening and closing mechanism of a automobile interior decoration slush molding equipment. BACKGROUND

[0002] In the existing rack gear transmission system, a simple sliding block guide or guide rail guide mode is usually adopted, and such a guide mode is prone to problems such as jamming and vibration during transmission, thereby causing unstable transmission and affecting the normal operation and service life of the equipment. In particular, in some occasions with high requirements for transmission accuracy and stability, the existing guide mechanism is difficult to meet the requirements. CONTENT OF THE UTILITY MODEL

[0003] To solve the above problems in the prior art, the utility model provides a rack gear transmission guide mechanism, which adopts bearing guide on the left and right sides and the rear side of the rack, solves the problem of unstable guide of the existing rack gear transmission, and improves transmission efficiency and stability.

[0004] To achieve the above object, the utility model provides the following technical scheme: a rack gear transmission guide mechanism, including power assembly, rack, gear transmission assembly, guide fixed plate, support column, side face guide bearing assembly, rear guide bearing assembly and square steel, the top side of power assembly is fixed in the middle part of square steel, the top middle of power assembly is fixedly connected with the bottom of rack, the guide fixed plate is horizontally arranged as two pieces and the rear side thereof is fixed on the upper side of square steel, the gear transmission assembly is fixed on the front part of the two guide fixed plates, the upper part of rack passes through the middle of the two guide fixed plates and is located behind the gear transmission assembly, the rack is engaged with the gear transmission assembly, the rear guide bearing assembly is in contact with the rear of rack and is fixed on the rear part of the two guide fixed plates, the side face guide bearing assembly is fixed on the two guide fixed plates and is in contact with the two side faces of rack, the support column is fixed on the middle of the front face of the two guide fixed plates and is located in front of the gear transmission assembly.

[0005] Further, the gear transmission assembly includes transmission gear, output shaft, bearing seat, driving sprocket and retainer, the bearing seat is arranged as two pieces and is located on the left and right sides respectively, the transmission gear is arranged in the middle of the two bearing seats, and the output shaft passes through the left bearing seat, the transmission gear, the retainer and the right bearing seat in sequence, the two guide fixed plates are also passed through by the output shaft and are located between the left bearing seat and the transmission gear and between the right bearing seat and the transmission gear respectively, the bearing seats on the left and right sides are fixed on the two outer side walls of the two guide fixed plates respectively, the middle part of the output shaft is protruded and the protruded part passes through one side guide fixed plate, the retainer passes through the other side guide fixed plate and the two side faces of the retainer are in contact with the transmission gear and the bearing seat respectively, the rack is engaged with the transmission gear, and the driving sprocket is connected with one end of the output shaft.

[0006] Further, the side surface guiding bearing assembly comprises a bearing mounting plate, a bearing one, a fixed pin shaft, a washer and a nut, the side surface guiding bearing assembly is arranged as four and is fixed at the top and bottom of the left and right two guiding fixed plates respectively, the bearing one is arranged at one side of the bearing mounting plate, the other side of the bearing mounting plate is fixed on the guiding fixed plate, the washer is arranged between the bearing mounting plate and the bearing one, and the fixed pin shaft is fixed by the nut after sequentially penetrating the bearing one, the washer, the bearing mounting plate and the nut.

[0007] Further, the rear guiding bearing assembly comprises a bearing two, a pin shaft, an anti-rotation baffle and a bearing baffle ring, the rear guiding bearing assembly is arranged as two and is fixed at the upper and lower sides of the rear of the two guiding fixed plates, the bearing baffle ring is arranged at the two sides of the bearing two, and the bearing two and the bearing baffle ring are penetrated by the pin shaft, the pin shaft is provided with a cut groove plane at the two ends of the side surface, and the two ends of the pin shaft penetrate the two guiding fixed plates respectively, the anti-rotation baffle is abutted at the cut groove plane of the two ends of the pin shaft and is fixed on the outer side wall of the two guiding fixed plates.

[0008] Compared with the prior art, the utility model has the advantages that: the utility model adopts the cooperation of the transmission gear and the rack, drives the rotation of the transmission gear through the linear motion of the rack, drives the rotation of the output shaft through the rotation of the transmission gear, and drives the rotation of the driving sprocket, so that the power is transmitted through the output shaft; in the whole motion process, the side surface guiding bearing assembly and the rear guiding bearing assembly jointly act, ensure that the rack always moves stably along the predetermined linear direction, effectively overcome the problem of unstable rack transmission guiding, and improve the production efficiency and the comprehensive performance of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is a structural schematic view of the utility model;

[0010] Figure 2 It is a structural schematic view of the utility model without the power assembly and the square steel;

[0011] Figure 3 It is a structural schematic view of the gear transmission assembly of the utility model;

[0012] Figure 4 It is a structural schematic view of the side surface guiding bearing assembly of the utility model;

[0013] Figure 5 It is a structural schematic view of the rear guiding bearing assembly of the utility model. DETAILED DESCRIPTION

[0014] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0015] Please refer to Figures 1-5 The utility model provides the following technical scheme: a rack transmission guiding mechanism is applied to power transmission and guiding of a furnace door opening and closing mechanism of a slush molding equipment, and comprises a power assembly 1, a rack 2, a gear transmission assembly 3, a guiding fixed plate 4, a support column 5, a side guiding bearing assembly 6, a rear guiding bearing assembly 7 and a square steel 8. The power assembly 1 provides power and can adopt a cylinder or other power source. The top end side of the power assembly 1 is fixed in the middle part of the square steel 8. The top end middle part of the power assembly 1 is fixedly connected with the bottom of the rack 2. The power assembly 1 provides power to drive the rack 2 to move linearly up and down. The guiding fixed plate 4 is horizontally arranged as two pieces and its rear side is fixed on the upper side of the square steel 8. The square steel 8 is fixed on the equipment. The gear transmission assembly 3 is fixed on the front part of the two guiding fixed plates 4. The upper part of the rack 2 passes through the middle part of the two guiding fixed plates 4 and is located behind the gear transmission assembly 3. The rack 2 is engaged with the gear transmission assembly 3. The rack 2 reciprocatingly moves up and down to drive the gear transmission assembly 3 to rotate forward and backward. The rear guiding bearing assembly 7 is in contact with the rear of the rack 2 and is fixed on the rear part of the two guiding fixed plates 4. The side guiding bearing assembly 6 is fixed on the two guiding fixed plates 4 and is in contact with the two sides of the rack 2. The rear guiding bearing assembly 7 and the side guiding bearing assembly 6 are used to guide the rack 2 to smoothly move linearly and can bear a large impact load. The support column 5 is fixed on the front middle part of the two guiding fixed plates 4 and is located in front of the gear transmission assembly 3. The support column 5 is arranged to support and reinforce the two guiding fixed plates 4 to prevent the guiding fixed plates 4 from loosening.

[0016] Specifically, the gear transmission assembly 3 includes a transmission gear 3a, an output shaft 3b, a bearing seat 3c, a driving sprocket 3d and a check ring 3f. The bearing seat 3c is provided in two and located on the left and right sides respectively. The transmission gear 3a is arranged between the two bearing seats 3c, and the output shaft 3b passes through the left bearing seat 3c, the transmission gear 3a, the check ring 3f and the right bearing seat 3c in sequence. The two guide fixed plates 4 are also passed through by the output shaft 3b and are located between the left bearing seat 3c and the transmission gear 3a and between the right bearing seat 3c and the transmission gear 3a respectively. The bearing seats 3c on the left and right sides are fixed on the two outer side walls of the two guide fixed plates 4 respectively. The middle part of the output shaft 3b protrudes and the protruding part passes through one side of the guide fixed plate 4. The two side surfaces of the protruding part on the output shaft 3b are in contact with the transmission gear 3a and the left bearing seat 3c respectively. The check ring 3f passes through the other side of the guide fixed plate 4, and the two side surfaces of the check ring 3f are in contact with the transmission gear 3a and the right bearing seat 3c respectively. Therefore, the bearing seat 3c fixes the position of the output shaft 3b so that the output shaft 3b does not deviate left and right when rotating. In addition, the check ring 3f and the output shaft 3b jointly fix the position of the transmission gear 3a, which does not deviate left and right. The setting of the check ring 3f can reduce the wear of the transmission gear 3a. The end of the output shaft 3b protrudes on the side of the outer side wall of the guide fixed plate 4. The rack 2 is engaged with the transmission gear 3a. The up-and-down reciprocating movement of the rack 2 drives the transmission gear 3a and the output shaft 3b to rotate in the opposite direction. The driving sprocket 3d is connected to one end of the output shaft 3b. The driving sprocket 3d is connected to the end protruding on the side of the outer side wall of the guide fixed plate 4. Therefore, the rotation of the output shaft 3b drives the driving sprocket 3d to rotate.

[0017] Specifically, the side face guide bearing assembly 6 includes a bearing mounting plate 6a, a bearing one 6b, a fixed pin shaft 6c, a washer 6d and a nut 6e. In this embodiment, the side face guide bearing assembly 6 is provided in four and is fixed on the top and bottom of the left and right guide fixed plates 4 respectively. The side face guide bearing assemblies 6 on the two guide fixed plates 4 are symmetrical. The bearing one 6b is arranged on one side of the bearing mounting plate 6a. The other side of the bearing mounting plate 6a is fixed on the guide fixed plate 4. The guide fixed plate 4 is provided with a mounting hole. The bearing mounting plate 6a is connected with the guide fixed plate 4 through a screw. The washer 6d is arranged between the bearing mounting plate 6a and the bearing one 6b. The fixed pin shaft 6c passes through the bearing one 6b, the washer 6d, the bearing mounting plate 6a and the nut 6e in sequence and is fixed by the nut 6e. The fixed pin shaft 6c does not rotate. The bearing one 6b rotates. The setting of the washer 6d can reduce the friction between the bearing one 6b and the bearing mounting plate 6a, so that the outer ring of the bearing one 6b rotates smoothly without interference.

[0018] Specifically, the rear guide bearing assembly 7 includes bearing two 7a, pin shaft 7b, anti-rotation baffle 7c and bearing baffle 7d, in the embodiment, the rear guide bearing assembly 7 is provided with two and is fixed on the upper and lower sides of the rear of the two guide fixed plates 4, bearing two 7a is provided with bearing baffle 7d on both sides and bearing two 7a and bearing baffle 7d are all penetrated by pin shaft 7b, bearing baffle 7d is provided to prevent bearing two 7a from moving left and right on pin shaft 7b, the two guide fixed plates 4 are provided with mounting holes for the installation of pin shaft 7b and anti-rotation baffle 7c, the two ends of pin shaft 7b are provided with cut groove planes, and the two ends of pin shaft 7b penetrate the two guide fixed plates 4 respectively, anti-rotation baffle 7c is abutted at the cut groove planes of the two ends of pin shaft 7b and is fixed on the outer side walls of the two guide fixed plates 4, anti-rotation baffle 7c and the cut groove planes of the two ends of pin shaft 7b are provided to block the rotation of pin shaft 7b and limit the freedom of pin shaft 7b in the left and right directions to prevent pin shaft 7b from being separated from the mounting holes, but bearing two 7a can also rotate;

[0019] During the whole movement process, the side guide bearing assembly 6 and the rear guide bearing assembly 7 jointly act to ensure that the rack 2 moves stably along the predetermined straight line direction, effectively overcoming the problem of unstable transmission and guidance of the rack 2.

[0020] The utility model discloses the movement process is: power assembly 1 provides power and makes the rack 2 linear motion, during the rack 2 movement, the four bearing one 6b of the two sides of rack 2 and the two bearing two 7a of rear side guide the rack 2 to make linear motion smoothly, and the rack 2 moves stably, and simultaneously, because the rack 2 is engaged with the transmission gear 3a in front, the linear motion of the rack 2 drives the transmission gear 3a to reverse, and the transmission gear 3a synchronously drives the output shaft 3b and the driving sprocket 3d to rotate in the same direction, thereby transmitting power, the utility model effectively overcomes the problem of unstable transmission and guidance of the rack 2, and improves production efficiency and equipment comprehensive performance.

[0021] Finally, it should be noted that: the above is only the preferred embodiment of the utility model and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, still can modify the technical scheme recorded in the foregoing each embodiment or make equivalent replacement to part technical features. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A rack and pinion guide mechanism, characterized in that, The utility model provides a kind of gear transmission assembly, including driving gear (3a), output shaft (3b), bearing seat (3c), driving sprocket (3d) and baffle ring (3f), the bearing seat (3c) is set to two and is located left and right respectively, the driving gear (3a) is set in two bearing seat (3c) middle and output shaft (3b) sequentially passes left bearing seat (3c), driving gear (3a), baffle ring (3f) and right bearing seat (3c), two the guiding fixed plate (4) is also passed by output shaft (3b) and is located between left bearing seat (3c) and driving gear (3a) and between right bearing seat (3c) and driving gear (3a) respectively, left and right the bearing seat (3c) is fixed on the two outer walls of two guiding fixed plates (4) respectively, the output shaft (3b) middle protrudes and protruding place passes one side guiding fixed plate (4), the baffle ring (3f) passes another side guiding fixed plate (4) and baffle ring (3f) two sides are in contact with driving gear (3a) and bearing seat (3c) respectively, the rack (2) is engaged with driving gear (3a), and the driving sprocket (3d) is connected with one end of output shaft (3b).

2. A rack and pinion guide according to claim 1, wherein The side surface guiding bearing assembly (6) includes bearing mounting plate (6a), bearing one (6b), fixed pin shaft (6c), washer (6d) and nut (6e), the side surface guiding bearing assembly (6) is set to four and is fixed on the top and bottom of left and right two guiding fixed plates (4) respectively, the bearing one (6b) is set on one side of bearing mounting plate (6a), the other side of bearing mounting plate (6a) is fixed on guiding fixed plate (4), washer (6d) is arranged between bearing mounting plate (6a) and bearing one (6b), and fixed pin shaft (6c) sequentially passes bearing one (6b), washer (6d), bearing mounting plate (6a) and nut (6e) and is fixed by nut (6e) after being fixed.

3. A rack and pinion guide according to claim 2, wherein, ​ 4. A rack and pinion guide according to claim 3, wherein The rear guide bearing assembly (7) comprises bearing two (7a), pin shaft (7b), anti-rotation baffle (7c) and bearing retainer (7d), the rear guide bearing assembly (7) is provided with two and is fixed on the upper and lower sides of the rear of the two guide fixed plates (4), bearing two (7a) is provided with bearing retainer (7d) on both sides, bearing two (7a) and bearing retainer (7d) are penetrated by pin shaft (7b), the two end sides of pin shaft (7b) are provided with a cutting groove plane, and the two ends of pin shaft (7b) penetrate the two guide fixed plates (4) respectively, the anti-rotation baffle (7c) is abutted at the cutting groove plane of the two ends of pin shaft (7b) and is fixed on the outer side wall of the two guide fixed plates (4).

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