CN108973024B

CN108973024B - Material belt type injection mold

Info

Publication number: CN108973024B
Application number: CN201810963095.5A
Authority: CN
Inventors: 梁建伟; 程牧; 李璐
Original assignee: Wenzhou Yihua Connector Co Ltd
Current assignee: Wenzhou Yihua Connector Co Ltd
Priority date: 2018-08-22
Filing date: 2018-08-22
Publication date: 2023-06-06
Anticipated expiration: 2038-08-22
Also published as: CN108973024A

Abstract

The invention discloses a material belt type injection mold, which belongs to the field of molds and comprises a lower mold base and a mold frame arranged below the lower mold base, wherein the upper end surface of the lower mold base is provided with a mounting frame in a shape of a Chinese character 'hui', the upper end surface of the lower mold base is provided with a plurality of baffle pieces and forms a mold cavity, a mold core is arranged in the mold cavity, one side of the mounting frame, which is arranged on the mold core, is provided with a limiting piece through which a material belt passes, and the limiting piece is connected with an implantation mechanism which drives the material belt to move up and down in a linkage manner. The invention has the following beneficial effects: the material belt is driven to move up and down through the implantation mechanism to automatically enter the die cavity for injection molding, so that the material belt can be effectively prevented from being damaged when entering the die cavity compared with the traditional pressing-in mode, and the yield is improved.

Description

Material belt type injection mold

Technical Field

The present invention relates to a mold, and more particularly, to a belt type injection mold.

Background

The injection mold is a tool for producing plastic products; is also a tool for endowing plastic products with complete structure and precise dimensions. A processing method for mass production of parts with complex shapes during injection molding. Specifically, the heated and melted plastic is injected into a die cavity under high pressure by an injection molding machine, and a formed product is obtained after cooling and solidification.

The Chinese patent with the bulletin number of CN204481310U discloses a plastic main body material belt of in-mold injection molding of a connector, which comprises a material belt body, wherein a plurality of terminal fixing plates are arranged at one side edge of the material belt body at intervals, a plastic main body is connected to each terminal fixing plate, a plurality of fixing holes are arranged at intervals on the material belt body, and a plurality of fixing notches are arranged at two side edges of the material belt body at intervals.

The Chinese patent with the publication number of CN206653587U discloses a composition structure of an injection molding die, which comprises a shaping and adjusting device, an injection molding die and a material pulling device, wherein a material belt passes through the shaping and adjusting device, the injection molding die and the material pulling device once; the shaping and adjusting device comprises an upper shaping pressing wheel set and a lower shaping pressing wheel set, and the material belt passes through a shaping channel formed between the upper shaping pressing wheel set and the lower shaping pressing wheel set and enters an injection molding die; the injection molding die comprises a molding die, a feeding guide assembly and a discharging guide assembly, wherein the feeding guide assembly and the discharging guide assembly are arranged at the front inlet and the rear inlet of the molding die, and a material belt passes through the feeding guide assembly and the discharging guide assembly to enter and exit the molding die; the material pulling device comprises a material pulling cylinder and a pressing assembly, the material pulling cylinder controls the pressing assembly to move and reset along the direction of the material strip in the backward working procedure, and the pressing assembly presses and releases the material strip through the driving of the pressing cylinder.

The traditional material belt type injection mold generally adopts a pressing mode to press the part to be processed of the material belt into the mold cavity for injection molding, but the pressing mode is easy to damage the material belt and needs to be improved.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a material belt type injection mold which can automatically implant a material belt into a mold cavity and can effectively avoid damage to the material belt.

In order to achieve the above purpose, the present invention provides the following technical solutions:

the utility model provides a material belt injection mold, includes the die holder and sets up in the die carrier of die holder below, the up end of die holder is provided with the installing frame that is "back" style of calligraphy, the up end of die holder is provided with a plurality of baffles and forms the die cavity, the mould benevolence sets up in the die cavity, the installing frame is provided with the locating part that the feed belt passed in one side of mould benevolence, the locating part linkage is connected with the implantation mechanism that drives the feed belt and reciprocate.

Through adopting above-mentioned technical scheme, drive the material area through implantation mechanism and reciprocate and get into the die cavity in automatically and mould plastics, compare with traditional mode of impressing, produce the damage when can effectively avoiding the entering die cavity of material area, improved the yields.

The invention is further provided with: the die carrier is from supreme bottom plate and the lifter plate that carries out the oscilaltion that can go on through the drive of actuating source respectively down, the up end of bottom plate is provided with a plurality of first ejector pins that run through lifter plate, die holder and installing frame in proper order, the up end of installing plate is provided with a plurality of second ejector pins that run through die holder and installing frame in proper order, a plurality of first ejector pin and second ejector pin all with the lower terminal surface looks butt of locating part, first ejector pin cover is equipped with the first spring that contradicts with the up end of bottom plate, second ejector pin cover is equipped with the second spring that contradicts with the up end of lifter plate, the lower terminal surface of die holder is provided with a plurality of gag lever posts that restrict bottom plate and lifter plate maximum decline distance respectively, implantation mechanism is located on the bottom plate and can make the bottom plate obtain extra displacement distance when rising and descending for the lifter plate.

By adopting the technical scheme, the push rod on the injection molding machine platform pushes the bottom plate and the lifting plate to move upwards, so that the limiting piece is ejected out through the first push rod and the second push rod to enable the material belt to be demolded, and meanwhile, the implantation mechanism drives the bottom plate to further obtain an additional lifting distance, so that the limiting piece lifts the material belt to the traditional feeding height for feeding; similarly, when the lifting plate is lowered to the lowest position through the reset action of the first spring and the second spring, the bottom plate can obtain an additional lowering distance relative to the lifting plate.

After the feeding is completed, the push rod on the injection molding machine bench retracts, the limiting piece moves downwards through the reset action of the first spring and the second spring, the bottom plate is driven by the implantation mechanism to further obtain an additional descending distance, the limiting piece automatically drives the material belt to be implanted in the mold cavity, the positioning is accurate, the damage of the material belt is effectively avoided, and the yield is high.

The invention is further provided with: the implantation mechanism comprises a push rod arranged on the lower end face of the lower die holder and penetrating through the lifting plate, a through hole for the push rod to pass through is formed in the bottom plate, a sliding block is arranged in the bottom plate in a sliding mode, guide inclined planes which can be mutually attached are arranged on the side walls of the sliding block and the push rod, the sliding block and the push rod can be kept mutually in conflict all the time, a fixing rod which is mutually inconsistent with the lower end face of the lifting plate is arranged on the upper end face of the sliding block, an inserting hole is formed in the lifting plate in a penetrating mode, and the fixing rod can be inserted into the inserting hole when the sliding block and the push rod are mutually far away from each other.

By adopting the technical scheme, in the process of lifting the bottom plate, the push rod moves downwards relative to the bottom plate, and then the sliding block is pushed away through the guide inclined plane mutually attached to the sliding block, in the process, the fixed rod always collides with the lifting plate, so that the distance between the lifting plate and the bottom plate is kept equal to the length of the fixed rod, the bottom plate can obtain additional lifting distance along with the sliding of the sliding block, and the lifting distance is equal to the length of the fixed rod; similarly, in the descending and resetting process of the bottom plate, the sliding block and the fixing rod can always keep mutually abutting, and in the descending process, the bottom plate can obtain an additional descending distance.

The invention is further provided with: the upper end face of bottom plate is provided with the mounting panel, the mounting groove has been seted up to the lateral wall of mounting panel, the up end of mounting panel runs through the movable hole that is linked together with the mounting groove, the movable hole supplies the push rod to pass and the slider slides, the lower terminal surface of slider is provided with the stopper that is located the mounting groove, the inner wall in movable hole is provided with the reset spring that is inconsistent with the slider.

Through adopting above-mentioned technical scheme, make slider and push rod remain conflict throughout through reset spring, guaranteed the linkage nature between slider and the push rod, and the cooperation setting of mounting groove and stopper has guaranteed the stability of slider displacement and the installation of the slider of being convenient for, its simple and convenient for installation of mechanism.

The invention is further provided with: the side wall of the sliding block is provided with a yielding groove, and one end of the return spring is abutted against the bottom of the yielding groove.

Through adopting above-mentioned technical scheme, through setting up the one end with the spring in the inslot of stepping down, the length that has improved the spring and then improved the restoring force of spring to improved the stability of spring at flexible in-process, effectively will reduce the space occupancy of spring simultaneously, optimized spatial layout, the installation of being convenient for more.

The invention is further provided with: the locating part includes limiting plate and lower limiting plate, the material way groove that the feed area passed has been seted up to one side between upper limiting plate and the lower limiting plate, guide chute has all been seted up at the opening part at material way groove both ends to upper limiting plate and lower limiting plate.

Through adopting above-mentioned technical scheme, divide into limiting plate and limiting plate through being about to the locating part and establish, the material of being convenient for is said the processing of groove and direction chute, and the direction chute has the guide effect to the material area, has guaranteed that the material is said and can not produce when getting into the material and say the inslot and break.

The invention is further provided with: the upper end face of the limiting piece penetrates through a plurality of positioning holes corresponding to the positions of the through holes in the material belt, a plurality of positioning pins corresponding to the positions of the positioning holes are arranged on the upper end face of the die core, and the positioning pins are located in the through holes in the lower limiting plate when the displacement distance of the limiting piece reaches the highest position.

Through adopting above-mentioned technical scheme, through the setting of locating pin and locating hole, the locating pin will pass through the through-hole of limiting plate down, the through-hole in material area in proper order in the implantation process in material area, has effectively guaranteed that the material area can remain stable in the material channel inslot at the in-process of moulding plastics.

The invention is further provided with: the number of the implantation mechanisms is two, and the two implantation mechanisms are respectively positioned at two sides of the length direction of the limiting piece.

Through adopting above-mentioned technical scheme, because separate through slider and dead lever between floor and the lifter plate, two implantation mechanisms are more favorable to improving the stability of implantation process, have guaranteed the stability of die carrier in the course of the work, and then have improved the stability of work piece such as spring in the course of the work, have improved the life of die carrier.

The invention is further provided with: the limiting parts are arranged in two, and the two limiting parts are detachably arranged with the mounting frame.

Through adopting above-mentioned technical scheme, the locating part sets up to two for this injection mold can process two material area simultaneously, and implantation mechanism and die carrier isotructure can share, have effectively reduced manufacturing cost in improving machining efficiency.

In summary, the invention has the following beneficial effects:

1. the material belt is driven to move up and down by the implantation mechanism to automatically enter the die cavity for injection molding, compared with the traditional pressing-in mode, the material belt injection molding device has the advantages that damage caused when entering the die cavity can be effectively avoided, and the yield is improved;

2. the push rod on the injection molding machine platform pushes the bottom plate and the lifting plate to move upwards, the limiting piece is ejected out through the first ejector rod and the second ejector rod, so that the material belt is demolded, and meanwhile, the implanting mechanism drives the bottom plate to further obtain an additional lifting distance, so that the limiting piece lifts the material belt to the traditional feeding height for feeding; after the feeding is completed, the push rod on the injection molding machine bench retracts, the limiting piece moves downwards through the reset action of the first spring and the second spring, the bottom plate is driven by the implantation mechanism to further obtain an additional descending distance, the limiting piece automatically drives the material belt to be implanted in the mold cavity, the positioning is accurate, the damage of the material belt is effectively avoided, and the yield is high. The method comprises the steps of carrying out a first treatment on the surface of the

3. The sliding block is always kept in contact with the push rod through the reset spring, so that the linkage between the sliding block and the push rod is ensured, the installation groove is matched with the limiting block, the displacement stability of the sliding block is ensured, the installation of the sliding block is facilitated, and the mechanism is simple and convenient to install;

4. through setting up of locating pin and locating hole, the locating pin will pass through the through-hole of lower limiting plate, the through-hole in material area in proper order at the implantation in-process in material area, has effectively guaranteed that the material area can remain stable in the material channel inslot at the in-process of moulding plastics.

Drawings

FIG. 1 is a schematic diagram of an embodiment when using a single station;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a cross-sectional view taken along the A-A plane of the implantation mechanism portion of FIG. 1;

FIG. 4 is an exploded view of the stop member of the embodiment;

fig. 5 is a schematic diagram of the structure of the embodiment when using the duplex position.

Reference numerals illustrate: 1. a lower die holder; 2. a mounting frame; 3. a mould frame; 31. a bottom plate; 32. a mounting plate; 321. a mounting groove; 322. a movable hole; 33. a lifting plate; 331. a jack; 34. a thimble limiting plate; 35. a first ejector rod; 36. a first spring; 37. a second ejector rod; 38. a second spring; 39. a limiting ring; 4. a limiting piece; 401. a guide chute; 402. positioning holes; 41. an upper limit plate; 411. a material channel groove; 42. a lower limit plate; 5. a limit rod; 51. a stem portion; 52. a limit part; 6. an implantation mechanism; 61. a push rod; 62. a slide block; 621. a relief groove; 63. a fixed rod; 64. a limiting block; 65. a return spring; 7. and a guiding inclined plane.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model provides a material belt injection mold, as shown in fig. 1, including die holder 1 and set up in die carrier 3 of die holder 1 below, the up end fixedly connected with of die holder 1 is the installing frame 2 of "back" style of calligraphy, and the up end of die holder 1 can be dismantled and be connected with a plurality of baffles and form the die cavity of moulding plastics usefulness, and the die core can be dismantled and set up in the die cavity, and installing frame 2 is provided with the feed area and passes and carry out spacing locating part 4 to the feed area in one side of die core.

As shown in fig. 1 and 2, the mold frame 3 includes a bottom plate 31, a mounting plate 32, a lifting plate 33 and a thimble limiting plate 34 from bottom to top, wherein the bottom plate 31, the mounting plate 32, the lifting plate 33 and the thimble limiting plate 34 can be driven by a push rod on a machine table of the injection molding machine to lift up and down. Four first ejector rods 35 which sequentially penetrate through the mounting plate 32, the lifting plate 33, the ejector pin limiting plate 34, the lower die holder 1 and the mounting frame 2 are fixedly connected to the upper end face of the bottom plate 1, the top ends of the first ejector rods 35 are fixedly connected to the lower end face of the limiting piece 4, each first ejector rod 35 is sleeved with a first spring 36, and two ends of each first spring 36 respectively collide with the lower end face of the lower die holder 1 and the upper end face of the mounting plate 32 and mutually compress the mounting plate 32 and the bottom plate 31.

Four second ejector rods 37 penetrating through the ejector pin limiting plate 34, the lower die holder 1 and the fixed frame in sequence are fixedly connected to the upper end face of the mounting plate 32, each second ejector rod 37 is sleeved with a second spring 38, and two ends of each second spring 38 respectively collide with the lower end face of the lower die holder 1 and the upper end face of the ejector pin limiting plate 34. The bottom end of each second ejector rod 37 is fixedly connected with a limiting ring 39, and the ejector pin limiting plates 34 are mutually pressed with the limiting rings 39 through second springs 38.

Wherein, fixedly connected with is used for ejecting the thimble in the material area after moulding plastics on the mounting panel 32, and thimble limiting plate 34 runs through there is the mounting hole, installs the thimble locating part that is run through by a plurality of thimbles in the mounting hole, and the thimble still runs through die holder 1 simultaneously and can get into in the die cavity along with the lifting of mounting panel 32.

As shown in fig. 2, the lower end surface of the lower die holder 1 is fixedly connected with a plurality of limiting rods 5 for limiting the maximum descending distance of the bottom plate 31 and the lifting plate 33 respectively, the limiting rods 5 comprise rod parts 51 which are fixed with the lower die holder 1 and penetrate through the corresponding ejector pin limiting plates 34 and the lifting plate 33 or the ejector pin limiting plates 34, the lifting plate 33, the mounting plate 32 and the bottom plate 31, and the bottom ends of the rod parts 51 are fixedly connected with limiting parts 52 which are in contact with the bottom ends of the corresponding lifting plate 33/the bottom plate 31.

As shown in fig. 2 and 3, two mutually symmetrical implantation mechanisms 6 are provided on the mounting plate 32, and the two implantation mechanisms 6 are respectively located between two second ejector rods 37 on the same side, wherein the two implantation mechanisms 6 can enable the bottom plate 31 to obtain an additional displacement distance relative to the lifting plate 33.

The implantation mechanism 6 comprises a push rod 61 fixedly connected to the lower end surface of the lower die holder 1 and penetrating through the ejector pin limiting plate 34, the lifting plate 33 and the mounting plate 32, and a through hole for the push rod 61 to penetrate through when relatively displacing with the bottom plate 31 is formed in the bottom plate 31. The mounting plate 32 has a mounting groove 321 provided on the side wall thereof, and a movable hole 322 extending through the upper end surface thereof and communicating with the mounting groove 321, a slider 62 sliding in the movable hole 322 is provided in the movable hole 322, and a push rod 61 is provided in the movable hole 322 so as to pass through the movable hole 322 and to be always kept in a mutually abutting state with the slider 62. Wherein, the side walls of the slide block 62 and the push rod 61 are respectively provided with a guide inclined plane 7 which can be mutually attached.

The upper end surface of the slider 62 is fixedly connected with a fixing rod 63 which abuts against the lower end surface of the lifting plate 33, the lifting plate 33 penetrates through the insertion hole 331, and the fixing rod 63 can be inserted into the insertion hole 331 when the slider 62 and the push rod 61 are separated from each other.

The lower end surface of the slider 62 is fixedly connected with a limiting block 64, the end surface area of the limiting block 64 is larger than that of the slider 62, and the limiting block 64 is positioned in the mounting groove 321 and is abutted against the inner wall of the mounting groove 321. The inner wall of the movable hole 322 is provided with a reset spring 65 which is abutted against the sliding block 62, the side wall of the sliding block 62, which is away from the push rod 61, is provided with a yielding groove 621, and one end of the reset spring 65 is positioned in the yielding groove 621 and is abutted against the groove bottom of the yielding groove 621.

As shown in fig. 4, the limiting member 4 includes an upper limiting plate 41 and a lower limiting plate 42 detachably connected by bolts, one side of the lower end surface of the upper limiting plate 41 is provided with a material channel slot 411 through which a feeding belt passes, and openings of both ends of the material channel slot 411 of the upper limiting plate 41 and the lower limiting plate 42 are provided with guiding inclined slots 401 with opposite inclination directions.

The upper end face of the limiting piece 4 is penetrated with a plurality of positioning holes 402 which are opposite to the positions of the through holes on the material belt, the upper end face of the die core is fixedly connected with a plurality of positioning pins which are opposite to the positions of the positioning holes 402, and when the displacement distance of the limiting piece 4 reaches the highest position, the positioning pins are positioned in the positioning holes 402 in the lower limiting plate 42.

As shown in fig. 5, the limiting members 4 may be preferably arranged in one or two, and the opposite mold cavities can be divided into two by arranging a plurality of baffle members according to the working requirements.

The working process comprises the following steps:

after one injection molding is completed, the upper die is opened, the push rod on the injection molding machine platform pushes the bottom plate 31 and the mounting plate 32 to move upwards, and the lifting plate 33 and the ejector pin limiting plate 34 synchronously move upwards due to the fact that the fixed rod 63 is in contact with the lower end face of the lifting plate 33, and at the moment, the first ejector rod 35, the second ejector rod 37 and the positioning pin simultaneously move upwards to eject the limiting piece 4 and the material belt upwards. As the mounting plate 32 moves up, the push rod 61 presses the slide block 62 to slide in a direction away from the push rod 61, and when the fixing rod 63 on the slide block 62 slides to the insertion hole 331 inserted into the lifting plate 33, the lifting plate 33 and the first push rod 35 continue to move upward for a distance to continuously eject the limiting member 4 to a predetermined position after the supporting effect of the fixing rod 63 is lost. At this time, a specified material belt distance is pulled by the accessory material pulling mechanism, and one-time material changing is completed (the accessory material pulling mechanism is in the prior art and is not described in detail).

After the material is changed, the push rod on the injection molding machine table is retracted, so that the bottom plate 31, the mounting plate 32, the lifting plate 33 and the ejector pin limiting plate 34 are synchronously moved downwards, the first ejector rod 35 and the second ejector rod 37 are driven to move downwards, and the first ejector rod 35 drives the limiting piece 4 and the material belt to move downwards. When the lifting plate 33 reaches the lowest position, the bottom plate 31 continues to descend and the fixing rod 63 gradually falls out of the insertion hole 331, and gradually resets by the elastic force of the reset spring 65 and the mutual cooperation with the guiding inclined plane 7 of the push rod 61, so as to complete one implantation process of the material belt.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. within the design concept of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a material belt injection mold, includes die holder (1) and sets up die carrier (3) in die holder (1) below, its characterized in that: the upper end face of the lower die holder (1) is provided with a mounting frame (2) in a shape of a Chinese character 'Hui', the upper end face of the lower die holder (1) is provided with a plurality of baffle pieces and forms a die cavity, the die core is arranged in the die cavity, one side of the mounting frame (2) on the die core is provided with a limiting piece (4) through which a feeding belt passes, and the limiting piece (4) is connected with an implantation mechanism (6) in a linkage manner, and the implantation mechanism drives the feeding belt to move up and down; the die carrier (3) comprises a bottom plate (31) and a lifting plate (33) which can be lifted up and down through the driving of a driving source from bottom to top, the upper end surface of the bottom plate (31) is provided with a plurality of first ejector rods (35) which sequentially penetrate through the lifting plate (33), a lower die holder (1) and a mounting frame (2), the upper end surface of the mounting plate (32) is provided with a plurality of second ejector rods (37) which sequentially penetrate through the lower die holder (1) and the mounting frame (2), the plurality of first ejector rods (35) and the second ejector rods (37) are all abutted to the lower end surface of a limiting piece (4), the first ejector rods (35) are sleeved with first springs (36) which are abutted to the upper end surface of the bottom plate (31), the second ejector rods (37) are sleeved with second springs (38) which are abutted to the upper end surface of the lifting plate (33), the lower end surface of the lower die holder (1) is provided with a plurality of limiting rods (5) which respectively limit the maximum lifting distance of the bottom plate (31) and the lifting plate (33), and the bottom plate (31) can be lifted up and down when the bottom plate (31) is positioned at the upper end surface and can be lifted up and down for displacement; the implantation mechanism (6) comprises a push rod (61) arranged on the lower end surface of the lower die holder (1) and penetrating through a lifting plate (33), a through hole for the push rod (61) to penetrate through is formed in the bottom plate (31), a sliding block (62) is slidably arranged in the bottom plate (31), guide inclined planes (7) which can be mutually attached are formed in the side walls of the sliding block (62) and the push rod (61), the sliding block (62) and the push rod (61) can always keep mutually abutting, a fixing rod (63) which is mutually abutted against the lower end surface of the lifting plate (33) is arranged on the upper end surface of the sliding block (62), an insertion hole (331) is formed in the lifting plate (33) in a penetrating mode, and the fixing rod (63) can be inserted into the insertion hole (331) when the sliding block (62) and the push rod (61) are mutually far away; the limiting piece (4) comprises an upper limiting plate (41) and a lower limiting plate (42), a material channel slot (411) through which a material feeding belt passes is formed in one side between the upper limiting plate (41) and the lower limiting plate (42), and guide inclined slots (401) are formed in openings at two ends of the material channel slot (411) in the upper limiting plate (41) and the lower limiting plate (42); the utility model discloses a die is characterized in that mounting plate (32) is provided with up end of bottom plate (31), mounting groove (321) has been seted up to the lateral wall of mounting plate (32), up end of mounting plate (32) runs through have with mounting groove (321) be linked together movable hole (322), movable hole (322) supply push rod (61) to pass and slide with slider (62), the lower terminal surface of slider (62) is provided with stopper (64) that are located mounting groove (321), the inner wall of movable hole (322) is provided with reset spring (65) that contradict with slider (62), the lateral wall of slider (62) has been seted up and has been stepped down groove (621), the up end of reset spring (65) is run through have a plurality of locating holes (402) corresponding with the through-hole position on the material area, the up end of die core sets up a plurality of locating pins relative with locating hole (402) position, the displacement distance of locating pin (4) reaches in the through-hole of locating pin (42) under in the locating plate when highest.

2. The strand injection mold of claim 1, wherein: the number of the implantation mechanisms (6) is two, and the two implantation mechanisms (6) are respectively positioned at two sides of the length direction of the limiting piece (4).

3. The strand injection mold of claim 1, wherein: the limiting pieces (4) are arranged in two, and the two limiting pieces (4) are detachably arranged with the mounting frame (2).