CN216176655U

CN216176655U - Automatic feeding device of lathe

Info

Publication number: CN216176655U
Application number: CN202122370217.XU
Authority: CN
Inventors: 刘樟祥; 刘斌
Original assignee: Zhejiang Xiangyu Electric Power Accessories Co ltd
Current assignee: Zhejiang Xiangyu Electric Power Accessories Co ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-04-05
Anticipated expiration: 2031-09-29

Abstract

The utility model discloses an automatic feeding device for a lathe, and aims to provide an automatic feeding device for a lathe, which can feed materials one by one and has high automation degree. Including the support, support top both ends all link there is feeding arrangement subassembly, even there is the cab apron of crossing of a plurality of evenly arranged at support top middle part, a plurality of cab apron of crossing is arranged in between two feeding arrangement subassemblies, it is corresponding with feeding arrangement subassembly respectively to cross the cab apron both ends, it is equipped with the guiding mechanism that can realize the root feeding one by one to cross the cab apron side, the support top is equipped with the installation frame, the installation frame even has two subtend parallel arrangement horizontal guide rails, horizontal guide rail slides even has the pneumatic tongs that can vertical direction motion, pneumatic tongs is corresponding with feeding arrangement subassembly, the support outside is equipped with the subassembly that gathers materials, be equipped with a plurality of evenly arranged's stock guide between support and the subassembly that gathers materials, a plurality of stock guide all are connected with the support side and corresponding with the subassembly that gathers materials. The utility model has the beneficial effects that: the feeding is realized one by one, and the accurate turnover is ensured; the automation degree is high.

Description

Automatic feeding device of lathe

Technical Field

The utility model relates to the technical field of automatic feeding of lathes, in particular to an automatic feeding device of a lathe.

Background

The anchor bolt is a fixing device with one end provided with a threaded fastener, is used in engineering technology and is commonly used. In rag bolt's production process, rag bolt needs the double-end to add man-hour, and after rag bolt accomplished a certain process processing, at the in-process that carries out the station and shift, because the log is heavier, need adopt manual operation, the mode of upset u turn, can't be by root the material loading when feeding to the lathe simultaneously, degree of automation is low.

SUMMERY OF THE UTILITY MODEL

The utility model provides the automatic feeding device of the lathe, which can feed material one by one and has high automation degree, in order to overcome the defects that the material cannot be fed one by one and the automation degree is low in the feeding process in the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an automatic feeding device of a lathe comprises a bracket, wherein both ends of the top surface of the bracket are connected with a feeding and arranging component, the middle part of the top surface of the bracket is connected with a plurality of transition plates which are uniformly arranged, the transition plates are arranged between the two feeding arranging components, two ends of the transition plate respectively correspond to the feeding arranging components, the side surface of the transition plate is provided with an adjusting mechanism capable of realizing feeding one by one, an installation frame is arranged above the bracket and is connected with two horizontal guide rails which are arranged in parallel in opposite directions, the horizontal guide rail is connected with a pneumatic gripper which can move vertically in a sliding way, the pneumatic gripper corresponds to the feeding arrangement component, the support outside is provided with the subassembly that gathers materials, be provided with a plurality of stock guides of evenly arranging between support and the subassembly that gathers materials, a plurality of stock guides all are connected with the side of support and corresponding with the subassembly that gathers materials.

Two feeding arrangement subassemblies set up respectively at the both ends of support, can carry out stud processing to rag bolt as the assembly line, and feeding arrangement subassembly can arrange in order the rag bolt that gets into simultaneously, and the benchmark of processing when guaranteeing follow-up transfer to processingequipment is the same. The middle part of the top surface of the support is provided with a transition plate, the transition plate is arranged between the two feeding arranging assemblies, and the transition plate plays a role in transition support in the transfer process. The side face of the transition plate is provided with an adjusting mechanism, and the adjusting mechanism can be adjusted according to the diameter size of the foundation bolts, so that foundation bolts on the transition plate can be fed one by one. Be provided with the installation frame in the top of support, be connected with subtend parallel arrangement's horizontal guide rail on the installation frame, pneumatic tongs can slide on horizontal guide rail, and pneumatic tongs can slide from top to bottom, and pneumatic tongs is arranged in feeding arrangement subassembly top and is put the subassembly phase-match with the feeding in order, and pneumatic tongs can snatch the rag bolt on the feeding arrangement subassembly, presss from both sides tightly to processing in transferring to processingequipment, degree of automation is higher. The support outside is provided with the subassembly that gathers materials, is provided with the stock guide between support and the subassembly that gathers materials, and the stock guide can be to the effect that plays the guide, and the processing is collected in conveniently shifting the rag bolt after accomplishing processing to the subassembly that gathers materials.

Preferably, the feeding arranging assembly comprises a limiting plate, a plurality of V-shaped rollers and a lifting assembly, the limiting plate, the V-shaped rollers and the lifting assembly are arranged on the same straight line, the V-shaped rollers are uniformly arranged and connected with the top surface of the support, the lifting assembly is arranged on one side of the V-shaped rollers and connected with the support, and the limiting plates of the two feeding arranging assemblies are respectively connected with different opposite side surfaces of the support. After the foundation bolt enters the V-shaped roller, the foundation bolt moves towards the limiting plate under the rolling action of the V-shaped roller, stops after reaching the limiting plate, finishes finishing operation, ensures that a follow-up pneumatic gripper can grab a fixed position when grabbing the foundation bolt, and ensures the processing precision.

Preferably, one end face, close to the transition plate, of each V-shaped roller is connected with a chain wheel, the chain wheels on the adjacent V-shaped rollers are connected with a chain, a power motor is arranged below the V-shaped rollers arranged at the end portions, the power motor is connected with the V-shaped rollers arranged at the end portions through the chains, the power motors are fixedly connected with the supports, and the movement directions of the V-shaped rollers in the two feeding adjusting assemblies are opposite. The adjacent V-arrangement gyro wheel passes through the chain and connects, and the power motor that V-arrangement gyro wheel below set up provides the rolling power of V-arrangement gyro wheel, and the V-arrangement gyro wheel motion opposite direction in two feeding adjustment subassemblies at support top is arranged in, guarantees to realize carrying out two-way processing to rag bolt, avoids adopting upset rag bolt's form to carry out two-way processing.

Preferably, the lifting assembly comprises a mounting plate, a V-shaped jacking block and an inclined jacking block, the mounting plate is fixedly connected with the support, the V-shaped jacking block is arranged in parallel with the inclined jacking block, the lower portion of the V-shaped jacking block is connected with a first connecting rod, the first connecting rod penetrates through the mounting plate to be connected with a first air cylinder, the lower portion of the inclined jacking block is connected with a second connecting rod, the second connecting rod penetrates through the mounting plate to be connected with a second air cylinder, and the first air cylinder and the second air cylinder are fixedly connected with the support. The top surface of the V-shaped top block is V-shaped, and the V-shaped top block can limit the foundation bolt when jacking and feeding so as to ensure the feeding position to be accurate; the top surface of the inclined ejector block is an inclined plane, the inclined direction faces the transition plate, and the jacking action of the inclined ejector block can enable the foundation bolt to be jacked out of the V-shaped ejector block for transfer, so that the operation is convenient, and the accurate turnover is guaranteed.

Preferably, the upper portion of the transition plate is provided with a guide notch, the bottom surface of the guide notch is an inclined plane, two guide rods are fixedly connected to the side face of the transition plate, the adjusting mechanism comprises an L-shaped adjusting plate, a swinging mechanism and a jacking block arranged on one side of the adjusting plate, the outline of the upper portion of the adjusting plate corresponds to the outline of the guide notch, two guide grooves are formed in the side face of the adjusting plate, the guide rods arranged on the transition plate are in sliding connection with the guide grooves formed in the adjusting plate, the end portion of the adjusting plate is connected with the swinging mechanism, a third air cylinder is connected to the lower portion of the jacking block, the third air cylinder is fixedly connected with the support, and the jacking block corresponds to the adjusting plate. The profile of the upper part of the adjusting plate corresponds to the profile of the guide notch, so that the adjusting plate can slide to drive the foundation bolts to slide, the foundation bolts arranged on the transition plate are matched with the jacking block to be shifted into the V-shaped idler wheels in the subsequent feeding arranging assembly by adjusting to the corresponding positions, the positions can realize one-by-one feeding, the subsequent processing is carried out, the automation degree is improved, and the operation is convenient.

Preferably, the swing mechanism comprises a swing rod, a connecting plate, a connecting shaft and a lifter, one end of the swing rod is connected with the adjusting plate, the other end of the swing rod is hinged to one end of the connecting plate, the other end of the connecting plate is fixedly sleeved with the connecting shaft, the connecting shaft is rotatably sleeved with the connecting seat, the connecting seat is fixedly connected with the support, the end of the connecting shaft is hinged to the lifter, and the lifter is fixedly connected with the support. The swing rod in the swing mechanism is connected with the adjusting plate to drive the adjusting plate to slide to realize adjusting action, the swing rod is hinged with the connecting plate, the connecting plate is sleeved and fixed on the connecting shaft, the lifting action of the lifter can drive the connecting shaft to rotate to realize the swinging action of the swing rod, and the adjustment action which can drive the adjusting can be normally implemented.

Preferably, the guide plate is triangular, the upper end surface of the guide plate is an inclined surface, and the upper end surface of the guide plate faces the material collecting assembly in the inclined direction. The guide plate plays a role in guiding.

Preferably, the material collecting assembly comprises a plurality of material collecting frames, the material collecting frames are uniformly arranged, each material collecting frame is provided with a low rod and a high rod, the height of each low rod is lower than that of each high rod, each low rod is close to the material guide plate, each high rod is far away from the material guide plate, and the tops of the low rods and the tops of the high rods are connected with material collecting chains. The chain that gathers materials that is connected on the high pole of collection work or material rest and the low pole becomes the relaxed state, can carry out cushioning effect when rag bolt transports the chain that gathers materials on, convenient subsequent transportation simultaneously.

Preferably, the horizontal guide rail is connected with a sliding plate in a sliding mode, the sliding plate is provided with a guide rail in the vertical direction, the pneumatic gripper is connected with a sliding block, the sliding block is connected with the guide rail in a sliding mode, the top of the pneumatic gripper is connected with a telescopic cylinder, and the telescopic cylinder is fixedly connected with the installation frame. Be connected with the slide on the horizontal guide, be provided with guide rail chain on the horizontal guide, the slide horizontal slip under guide rail chain's effect, be provided with the guide rail of vertical direction on the slide, telescopic cylinder is connected on pneumatic tongs upper portion, pneumatic tongs's side is connected with the slider, slider and guide rail sliding connection, telescopic cylinder's flexible action can drive pneumatic tongs and do the slip of vertical direction, realize that pneumatic tongs snatchs rag bolt and accomplish horizontal direction and vertical direction motion, satisfy the automatic feeding effect of lathe, make degree of automation reinforcing, and convenient operation.

The utility model has the beneficial effects that: the limiting plate can ensure that the grabbing position is accurate and the machining precision is ensured; the progressive bidirectional processing avoids realizing bidirectional processing in a turning mode; the lifting positions are adjusted according to the sizes of different diameters, the feeding is realized one by one, and the accurate turnover is ensured; the automation degree is high, and the operation is convenient; the aggregate component plays a role in buffering when collecting the workpieces which are processed, and meanwhile, the subsequent transportation is convenient.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a partial view of the present invention;

fig. 3 is an enlarged view of a in fig. 1.

In the drawings, there is shown in the drawings,

1. the device comprises a support, 2, a transition plate, 3, an adjusting mechanism, 4, an installation frame, 5, a horizontal guide rail, 6, a pneumatic gripper, 7, a material collecting frame, 8, a material guide plate, 9, a limiting plate, 10, a V-shaped roller, 11, a lifting assembly, 20, a guide notch, 21, a guide rod, 30, an adjusting plate, 31, a swinging mechanism, 32, a jacking block, 33, a cylinder III, 50, a sliding plate, 51, a guide rail, 52, a sliding block, 53, a telescopic cylinder, 70, a low rod, 71, a high rod, 72, an aggregate chain, 100, a chain wheel, 101, a chain, 102, a power motor, 110, an installation plate, 111, a V-shaped jacking block, 112, an inclined jacking block, 113, a connecting rod I, 114, a cylinder I, 115, a connecting rod II, 116, a cylinder II, 300, a guide groove, 310, a swinging rod, 311, a connecting plate, 312, a connecting shaft, 313, a lifter and a connecting seat.

Detailed Description

The utility model is further described with reference to the following figures and detailed description.

Embodiment 1, as shown in fig. 1, an automatic feeding device for a lathe comprises a support 1, wherein both ends of the top surface of the support 1 are connected with feeding arranging components, the middle part of the top surface of the support 1 is connected with a plurality of uniformly arranged transition plates 2, the plurality of transition plates 2 are arranged between two feeding arranging components, both ends of each transition plate 2 correspond to the feeding arranging components, the side surface of each transition plate 2 is provided with an adjusting mechanism 3 capable of realizing feeding one by one, an installation frame 4 is arranged above the support 1, the installation frame 4 is connected with two horizontal guide rails 5 which are arranged in parallel in opposite directions, the horizontal guide rails 5 are slidably connected with pneumatic grippers 6 which can move in the vertical direction, the pneumatic grippers 6 correspond to the feeding arranging components, an aggregate component is arranged on the outer side of the support 1, a plurality of uniformly arranged guide plates 8 are arranged between the support 1 and the aggregate component, the plurality of material guide plates 8 are connected with the side surface of the bracket 1 and correspond to the material collecting component.

As shown in fig. 2, the feeding arrangement component comprises a limiting plate 9, a plurality of V-shaped rollers 10 and a lifting component 11, the limiting plate 9, the V-shaped rollers 10 and the lifting component 11 are arranged in the same straight line, the V-shaped rollers 10 are uniformly arranged and connected with the top surface of the support 1, the lifting component 11 is arranged on one side of the V-shaped rollers 10 and connected with the support 1, and the limiting plates 9 of the two feeding arrangement components are respectively connected with different opposite side surfaces of the support 1. One end face, close to the transition plate 2, of each V-shaped roller 10 is connected with a chain wheel 100, the chain wheels 100 on the adjacent V-shaped rollers 10 are connected with a chain 101, a power motor 102 is arranged below the V-shaped rollers 10 arranged at the end portions, the power motor 102 is connected with the V-shaped rollers 10 arranged at the end portions through the chains 101, the power motor 102 is fixedly connected with the support 1, and the motion directions of the V-shaped rollers 10 in the two feeding arranging assemblies are opposite. Lift subassembly 11 and include mounting panel 110, V-arrangement kicking block 111 and oblique kicking block 112, mounting panel 110 and support 1 fixed connection, V-arrangement kicking block 111 and oblique kicking block 112 parallel arrangement, V-arrangement kicking block 111 sub-unit connection has connecting rod 113, connecting rod 113 passes mounting panel 110 and is connected with cylinder 114, kicking block 112 sub-unit connection has connecting rod two 115 to one side, connecting rod two 115 passes mounting panel 110 and is connected with cylinder two 116, cylinder 114 and cylinder two 116 all with support 1 fixed connection. The upper portion of crossing cab apron 2 is provided with direction breach 20, the direction breach 20 bottom surface is the inclined plane, cross cab apron 2 side fixedly connected with two guide arms 21, guiding mechanism 3 includes L shape adjusting plate 30, swing mechanism 31 and arranges the jack-up piece 32 of adjusting plate 30 one side in, the upper portion profile of adjusting plate 30 corresponds with the profile of direction breach 20, the adjusting plate 30 side is provided with two guide slots 300, the guide arm 21 that crosses set up on cab apron 2 and the guide slot 300 sliding connection that sets up on adjusting plate 30, the tip and the swing mechanism 31 of adjusting plate 30 are connected, jack-up piece 32 below is connected with cylinder three 33, cylinder three 33 and support 1 fixed connection, jack-up piece 32 is corresponding with adjusting plate 30. The swing mechanism 31 comprises a swing rod 310, a connecting plate 311, a connecting shaft 312 and a lifter 313, wherein one end of the swing rod 310 is connected with the adjusting plate 30, the other end of the swing rod 310 is hinged to one end of the connecting plate 311, the other end of the connecting plate 311 is fixedly sleeved with the connecting shaft 312, the connecting shaft 312 is rotatably sleeved with a connecting seat 314, the connecting seat 314 is fixedly connected with the support 1, the end of the connecting shaft 312 is hinged to the lifter 313, and the lifter 313 is fixedly connected with the support 1.

As shown in fig. 1 and 2, the material guide plate 8 is triangular, the upper end surface of the material guide plate 8 is an inclined surface, and the upper end surface of the material guide plate 8 faces the material collecting assembly 7 in an inclined direction.

As shown in fig. 1, the material collecting assembly comprises a plurality of material collecting frames 7, the material collecting frames 7 are uniformly arranged, the material collecting frames 7 are provided with low rods 70 and high rods 71, the height of the low rods 70 is lower than that of the high rods 71, the low rods 70 are close to the material guide plate 8, the high rods 71 are far away from the material guide plate 8, and the tops of the low rods 70 and the tops of the high rods 71 are connected with material collecting chains 72.

As shown in fig. 3, a sliding plate 50 is slidably connected to the horizontal guide rail 5, a vertical guide rail 51 is disposed on the sliding plate 50, a sliding block 52 is connected to the pneumatic gripper 6, the sliding block 52 is slidably connected to the guide rail 51, a telescopic cylinder 53 is connected to the top of the pneumatic gripper 6, and the telescopic cylinder 53 is fixedly connected to the mounting frame 4.

The working principle of the utility model is as follows: as shown in fig. 1-3, the anchor bolts enter the V-shaped roller 10 at the side far away from the aggregate component, and the V-shaped roller 10 rolls, so that the anchor bolts contact the limiting plate 9 to finish the arrangement, and the pneumatic gripper 6 is ensured to grasp the correct position for transfer. The telescopic cylinder 53 retracts after the pneumatic gripper 6 grips the foundation bolt, the foundation bolt is transferred to a processing device under the sliding action of the sliding plate 50 to finish single-side processing, the foundation bolt is transported back to the V-shaped roller 10 by the original way of the pneumatic gripper 6 after the processing is finished, the foundation bolt is jacked upwards by the V-shaped jacking block 111 arranged on one side of the V-shaped roller 10, then the inclined jacking block 112 jacks upwards, the jacking height exceeds the V-shaped jacking block 111, the foundation bolts are jacked out from the V-shaped jacking block 111 and transferred to the transition plate 2 for temporary storage, the position of the adjusting plate 30 is adjusted according to the diameter size of the foundation bolts, the foundation bolts on the transition plate 2 are adjusted to a certain position, this position satisfies jack-up piece 32 can realize the effect of jack-up one by one when the jack-up, with rag bolt transfer to be close to the subassembly that gathers materials on the V-arrangement gyro wheel 10, through the arrangement, pneumatic tongs 6 snatchs the transfer, accomplishes the processing of rag bolt opposite side. After the double-side processing is finished, the V-shaped ejector block 111 and the inclined ejector block 112 are matched to eject and transfer the foundation bolt into the aggregate component, and the automatic feeding processing operation is finished.

Claims

1. An automatic feeding device of a lathe is characterized by comprising a support (1), wherein both ends of the top surface of the support (1) are connected with feeding arranging components, the middle part of the top surface of the support (1) is connected with a plurality of transition plates (2) which are uniformly arranged, the plurality of transition plates (2) are arranged between the two feeding arranging components, both ends of each transition plate (2) respectively correspond to the feeding arranging components, an adjusting mechanism (3) capable of realizing feeding one by one is arranged on the side surface of each transition plate (2), an installation frame (4) is arranged above the support (1), the installation frame (4) is connected with two horizontal guide rails (5) which are oppositely arranged in parallel, the horizontal guide rails (5) are slidably connected with pneumatic grippers (6) capable of moving in the vertical direction, the pneumatic grippers (6) correspond to the feeding arranging components, and the components are arranged outside the support (1), a plurality of guide plates (8) which are uniformly arranged are arranged between the support (1) and the material collecting component, and the guide plates (8) are connected with the side surface of the support (1) and correspond to the material collecting component.

2. The automatic feeding device of the lathe according to claim 1, wherein the feeding sorting assembly comprises a limiting plate (9), a plurality of V-shaped rollers (10) and a lifting assembly (11), the limiting plate (9), the V-shaped rollers (10) and the lifting assembly (11) are arranged in the same straight line, the V-shaped rollers (10) are uniformly arranged and connected with the top surface of the support (1), the lifting assembly (11) is arranged on one side of the V-shaped rollers (10) and connected with the support (1), and the limiting plates (9) of the two feeding sorting assemblies are respectively connected with different opposite side surfaces of the support (1).

3. The automatic feeding device of the lathe as claimed in claim 2, wherein a chain wheel (100) is connected to one end face of each V-shaped roller (10) close to the transition plate (2), a chain (101) is connected to the chain wheel (100) on the adjacent V-shaped roller (10), a power motor (102) is arranged below the V-shaped roller (10) arranged at the end part, the power motor (102) is connected with the V-shaped roller (10) arranged at the end part through the chain (101), the power motor (102) is fixedly connected with the bracket (1), and the moving directions of the V-shaped rollers (10) in the two feeding and sorting assemblies are opposite.

4. The automatic loading device of the lathe as claimed in claim 2, wherein the lifting assembly (11) comprises a mounting plate (110), a V-shaped top block (111) and an inclined top block (112), the mounting plate (110) is fixedly connected with the support (1), the V-shaped top block (111) and the inclined top block (112) are arranged in parallel, a first connecting rod (113) is connected to the lower portion of the V-shaped top block (111), the first connecting rod (113) penetrates through the mounting plate (110) to be connected with a first cylinder (114), a second connecting rod (115) is connected to the lower portion of the inclined top block (112), the second connecting rod (115) penetrates through the mounting plate (110) to be connected with a second cylinder (116), and the first cylinder (114) and the second cylinder (116) are fixedly connected with the support (1).

5. The automatic loading device of the lathe according to claim 1, wherein a guide notch (20) is formed in the upper portion of the transition plate (2), the bottom surface of the guide notch (20) is an inclined surface, two guide rods (21) are fixedly connected to the side surface of the transition plate (2), the adjusting mechanism (3) comprises an L-shaped adjusting plate (30), a swinging mechanism (31) and a jacking block (32) arranged on one side of the adjusting plate (30), the upper profile of the adjusting plate (30) corresponds to the profile of the guide notch (20), two guide grooves (300) are formed in the side surface of the adjusting plate (30), the guide rods (21) arranged on the transition plate (2) are in sliding connection with the guide grooves (300) arranged on the adjusting plate (30), the end portion of the adjusting plate (30) is connected with the swinging mechanism (31), and a third air cylinder (33) is connected below the jacking block (32), the third cylinder (33) is fixedly connected with the support (1), and the jacking block (32) corresponds to the adjusting plate (30).

6. The automatic feeding device of the lathe as claimed in claim 5, wherein the swing mechanism (31) comprises a swing rod (310), a connecting plate (311), a connecting shaft (312) and a lifter (313), one end of the swing rod (310) is connected with the adjusting plate (30), the other end of the swing rod (310) is hinged to one end of the connecting plate (311), the other end of the connecting plate (311) is fixedly sleeved with the connecting shaft (312), the connecting shaft (312) is rotatably sleeved with the connecting seat (314), the connecting seat (314) is fixedly connected with the bracket (1), the end of the connecting shaft (312) is hinged to the lifter (313), and the lifter (313) is fixedly connected with the bracket (1).

7. The automatic loading device for the lathe as claimed in claim 1, wherein the guide plate (8) is triangular, the upper end surface of the guide plate (8) is an inclined surface, and the upper end surface of the guide plate (8) is inclined towards the material collecting component.

8. The automatic loading device of a lathe is characterized in that the material collecting component comprises a plurality of material collecting frames (7), the material collecting frames (7) are uniformly arranged, the material collecting frames (7) are provided with low rods (70) and high rods (71), the height of the low rods (70) is lower than that of the high rods (71), the low rods (70) are close to the material guide plate (8), the high rods (71) are far away from the material guide plate (8), and material collecting chains (72) are connected to the tops of the low rods (70) and the tops of the high rods (71).

9. The automatic feeding device of the lathe as claimed in claim 1, wherein a sliding plate (50) is slidably connected to the horizontal guide rail (5), a vertical guide rail (51) is arranged on the sliding plate (50), a sliding block (52) is connected to the pneumatic gripper (6), the sliding block (52) is slidably connected to the guide rail (51), a telescopic cylinder (53) is connected to the top of the pneumatic gripper (6), and the telescopic cylinder (53) is fixedly connected to the mounting frame (4).