CN111372377B

CN111372377B - Product bending mechanism

Info

Publication number: CN111372377B
Application number: CN202010187144.8A
Authority: CN
Inventors: 尚奔; 顾福乾
Original assignee: Luxshare Automation Jiangsu Ltd
Current assignee: Luxshare Automation Jiangsu Ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2021-08-13
Anticipated expiration: 2040-03-17
Also published as: CN111372377A

Abstract

The embodiment of the invention discloses a product bending mechanism, wherein a power source drives a transmission mechanism to move, a first bending block and a second bending block respectively rotate around a rotating shaft, and the transmission mechanism comprises a primary transmission mechanism and a secondary transmission mechanism. The primary transmission mechanism drives the first bending block to rotate, so that the first part of the product rotates by a first angle; the secondary transmission mechanism drives the second bending block to rotate, so that the second part of the product rotates by a second angle. Therefore, the product bending mechanism provided by the embodiment of the invention can automatically bend products, and can bend different parts of the products at different angles at one time, so that the production automation level is improved, the operation time is saved, and the production efficiency is improved.

Description

Product bending mechanism

Technical Field

The invention relates to the field of machinery, in particular to a product bending mechanism.

Background

During the production of the product, it is often necessary to bend the product to form it into a predetermined shape. For example, a flexible circuit board in an electronic product needs to be bent into a certain shape to meet the needs of the electronic product in terms of shape, function, and the like. In the prior art, bending operation is performed manually, for example, bending bars or other tools are used to bend and shape the product. However, the manual bending method is adopted, so that the shape error of the bent product is large, the qualified rate of the product is reduced, the labor cost is high, and the production efficiency is low.

Disclosure of Invention

In view of this, the embodiment of the present invention provides a product bending mechanism, which can automatically complete multiple bending operations of a product.

The embodiment of the invention provides a product bending mechanism, which comprises:

the bending unit comprises a rotating shaft, a first bending block and a second bending block, wherein the first bending block and the second bending block respectively rotate around the rotating shaft, the first bending block is configured to drive a first part of a product to rotate by a first angle, the second bending block is configured to drive a second part of the product to rotate by a second angle, and the first part and the second part are two different parts of the product;

the driving unit is configured to drive the first bending block and the second bending block to rotate, the driving unit comprises a power source and a transmission mechanism, the transmission mechanism comprises a primary transmission mechanism and a secondary transmission mechanism, the primary transmission mechanism drives the first bending block to rotate, and the secondary transmission mechanism drives the second bending block to rotate; and

the bending unit and the driving unit are arranged on the rack, and the rotating shaft is fixedly connected with the rack.

Preferably, the primary transmission mechanism comprises a primary rack, the secondary transmission mechanism comprises a secondary rack, the primary rack and the secondary rack are mechanically connected and parallel, and the power source drives the primary rack to move;

the bending unit further comprises a primary gear and a secondary gear, the primary gear is coaxially and fixedly connected with the first bending block, the secondary gear is coaxially and fixedly connected with the second bending block, the primary gear is in meshing transmission with the primary rack, and the secondary gear is in meshing transmission with the secondary rack.

Preferably, the transmission mechanism further comprises a spring and a limit pin, the spring is parallel to the primary rack and the secondary rack, one end of the limit pin and one end of the spring are connected to form an elastic connection structure, and the elastic connection structure is connected with the primary rack and the secondary rack.

Preferably, the spring is connected with the primary rack, the limit pin is fixedly connected with the secondary rack, the primary rack is further provided with a limit groove, and the limit pin and the spring are at least partially arranged in the limit groove.

Preferably, the spring is connected with the secondary rack, the limit pin is fixedly connected with the primary rack, the secondary rack is further provided with a limit groove, and the limit pin and the spring are at least partially arranged in the limit groove.

Preferably, the bending unit further includes a first bearing and a second bearing, the primary gear is connected to the rotating shaft through the first bearing, and the secondary gear is connected to the rotating shaft through the second bearing.

Preferably, the first bending block has a first contact portion and the second bending block has a second contact portion, the first contact portion and the second contact portion being in contact with the first portion and the second portion of the product, respectively.

Preferably, the first bending block includes a first contact portion, a connecting portion and an extending portion, the first contact portion is configured to contact with a first portion of the product, a first end of the connecting portion is fixedly connected with the primary gear, the extending portion extends from a second end of the connecting portion in a direction away from the connecting portion and is connected with the first contact portion, and the first bending block is located outside the second bending block.

Preferably, the rack has two sliding rails parallel to the primary rack and the secondary rack, and the primary rack and the secondary rack are movably connected with the sliding rails respectively.

Preferably, a guide block is arranged on the bearing table, and the guide block is configured to bend the product along a predetermined track.

Preferably, the carrier further has a stopper for fixing a third portion of the product, the third portion being a portion of the product different from the first portion and the second portion.

According to the product bending mechanism provided by the embodiment of the invention, the power source drives the transmission mechanism to move, the first bending block and the second bending block respectively rotate around the rotating shaft, and the transmission mechanism comprises a primary transmission mechanism and a secondary transmission mechanism. The primary transmission mechanism drives the first bending block to rotate, so that the first part of the product rotates by a first angle; the secondary transmission mechanism drives the second bending block to rotate, so that the second part of the product rotates by a second angle. Therefore, the product bending mechanism provided by the embodiment of the invention can automatically bend products, and can bend different parts of the products at different angles at one time, so that the automation level is improved, the operation time is saved, and the production efficiency is improved.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

fig. 1-2 are perspective views of a product bending mechanism according to an embodiment of the present invention;

FIG. 3 is a front view of a product bending mechanism of an embodiment of the present invention;

fig. 4 is a schematic perspective view of a driving unit according to an embodiment of the present invention;

FIG. 5 is a schematic perspective view of a bending unit according to an embodiment of the present invention;

FIG. 6 is a top view of a bending unit of an embodiment of the present invention;

FIG. 7 is a schematic illustration of the assembly of a transmission according to an embodiment of the present invention;

FIG. 8 is a schematic illustration of the assembly of another actuator according to an embodiment of the invention;

FIGS. 9-11 are schematic views of the operation of the transmission mechanism of the embodiment of the present invention;

FIG. 12 is a diagram of the shape change of an exemplary product before and after bending according to an embodiment of the present invention

Fig. 13-15 are schematic views of the operation of the product bending mechanism according to the embodiment of the invention.

Description of reference numerals:

DIR 1-first direction; 1-a bending unit; 11-a rotating shaft; 12-a first bending block; 121-a first contact; 122-a connecting portion; 123-an extension; 13-a second bending block; 131-a second contact; 14-a primary gear; 15-a secondary gear; 2-a drive unit; 21-a power source; 211-a rotary cylinder; 212-a drive gear; 213-driving the rack; 22-a transmission mechanism; 221-a primary rack; 221 a-limit groove; 222-a secondary rack; 222 a-a limiting groove; 223-a spring; 224-a spacing pin; 3-a frame; 31-a carrier table; 311-a boot block; 312-a stop; 32-a slide rail; 4-product; 41-a first part; 42-a second portion; 43-third section.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout this specification, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

When an element or layer is referred to as being "on," "engaged to," "connected to" or "coupled to" another element or layer, it may be directly on, engaged, connected or coupled to the other element or layer or intervening elements or layers may be present. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Fig. 1 and 2 are schematic perspective views of the product bending mechanism of the present embodiment, and fig. 3 is a front view of the product bending mechanism of the present embodiment. As shown in fig. 1 to 3, the product bending mechanism of the present embodiment includes a bending unit 1, a driving unit 2, and a frame 3, and the bending unit 1 and the driving unit 2 are disposed on the frame 3. The bending unit 1 comprises a rotating shaft 11 fixed on the rack 3, and a first bending block 12 and a second bending block 13 which rotate around the rotating shaft 11 respectively, wherein the first bending block 12 drives a first part of a product to rotate by a first angle, and the second bending block 13 drives a second part of the product to rotate by a second angle. The driving unit 2 includes a power source 21 and a transmission mechanism 22, and the driving unit 2 drives the first bending block 12 and the second bending block 13 to rotate. The transmission mechanism 22 includes a primary transmission mechanism that drives the first bending block 12 and a secondary transmission mechanism that drives the second bending block 13. The frame 3 has a carrying table 31 for carrying products.

Fig. 4 is a schematic perspective view of the driving unit of the present embodiment, and fig. 5 is a schematic perspective view of the bending unit of the present embodiment. As shown in fig. 1-5, in an alternative embodiment, the primary gear mechanism includes a primary rack 221, the secondary gear mechanism includes a secondary rack 222, the primary rack 221 and the secondary rack 222 are substantially parallel, the bending mechanism further includes a primary gear 14 and a secondary gear 15, the primary gear 14 and the primary rack 221 are in meshing transmission, and the secondary gear 15 and the secondary rack 222 are in meshing transmission. The primary gear 14 is coaxially and fixedly connected with the first bending block 12, the secondary gear 15 is coaxially and fixedly connected with the second bending block 13, the primary rack 221 and the secondary rack 222 are mechanically connected, and the power source 21 drives the primary rack 221 to move to drive the primary gear 14, the secondary rack 222 and the secondary gear 15 to move so as to drive the first bending block 12 and the second bending block 13 to rotate.

Primary rack 221 and secondary rack 222 may be disposed on the same plane or on different planes. Preferably, the primary rack 221 and the secondary rack 222 are stacked in the height direction of the product bending mechanism, so that the horizontal space occupied by the product bending mechanism can be reduced, and the space can be reasonably utilized. A person skilled in the art can dispose the primary rack 221 above the secondary rack 222 or dispose the secondary rack 222 above the primary rack 221 as required, and the structure and principle of the product bending mechanism will be described in the present embodiment by taking the secondary rack 222 above the primary rack 221 as an example.

In order to enable the primary rack 221 and the secondary rack 222 to smoothly perform a linear motion, the frame 3 may further have a slide rail 32, the slide rail 32 being parallel to the secondary rack 222 and the secondary rack 222, the primary rack 221 and the secondary rack 222 moving along the slide rail 32. For example, as shown in fig. 1 to 4, there may be two slide rails 32, and the primary rack 221 and the secondary rack 222 are respectively connected to the slide rails 32 through sliders and move along the corresponding slide rails 32.

The power source 21 may be a motor, a cylinder, or other device suitable for driving the primary rack 221 in a linear motion. In an alternative embodiment, as shown in FIG. 4, the power source 21 may include a rotary cylinder 211, a drive gear 212, and a drive rack 213. The revolving cylinder 211 is a cylinder in which an output shaft can perform revolving motion. The output shaft of the rotary cylinder 211 is fixedly connected with the driving gear 212, the driving rack 213 is fixedly connected with and basically parallel to the primary rack 221, the driving gear 212 is in meshed transmission with the driving gear 212, and the rotary cylinder 211 drives the driving gear 212 to rotate, so that the driving rack 213 drives the primary rack 221 to do linear motion. By using the rotary cylinder 211, the driving gear 212 and the driving rack 213 as the power source 21, the power source 21 and the transmission mechanism 22 are overlapped in the height direction of the product bending mechanism, the horizontal plane space occupied by the product bending mechanism can be further reduced, so that the space can be reasonably utilized, and the structure of the product bending mechanism is more compact.

The primary gear 14 and the secondary gear 15 can rotate relatively, so that the primary gear 14 and the secondary gear 15 can move relatively independently, and the first bending block 12 and the second bending block 13 can perform bending operations on products at different angles. Optionally, the bending unit 1 further comprises a first bearing and a second bearing, through which the primary gear 14 and the secondary gear 15 are connected to the rotating shaft 11, respectively.

Fig. 6 is a plan view of the bending unit of the present embodiment. As shown in fig. 2 and 6, the first bending block 12 has a first contact portion 121, the second bending block 13 has a second contact portion 131, and the first contact portion 121 and the second contact portion 131 are respectively in contact with the first portion and the second portion of the product to move the first portion and the second portion of the product to bend.

In an alternative embodiment, the first bending block 12 further includes a connecting portion 122 and an extending portion 123, a first end of the connecting portion 122 is fixedly connected to the secondary gear 15, and the extending portion 123 extends from a second end of the connecting portion 122 in a direction away from the connecting portion 122 and is connected to the first contact portion 121. As shown in fig. 2 and 6, the entire first bending block 12 is located outside the second bending block 13, and the first bending block 12 is prevented from colliding and interfering with the second bending block 13 during rotation. As shown in fig. 6, the connecting portion 122 may be disposed along the radial direction of the rotating shaft 11, the extending portion 123 is substantially perpendicular to the connecting portion 122, and the distance from the connection point of the connecting portion 122 and the extending portion 123 to the rotating shaft 11 is greater than the distance from the farthest end of the second bending block 13 to the rotating shaft 11, that is, L2 > L1, the first bending block 12 may avoid the second bending block 13, and the two bending blocks do not interfere with each other when moving.

Fig. 7 and 8 are schematic views of the assembly relationship of the two transmission mechanisms of the present embodiment, respectively. As shown in fig. 7 and 8, the driving rack 213 and the primary rack 221 may be two racks that are opposite to each other on one rack plate, which may reduce the number of the connecting portions 122 and improve the structural strength.

Primary rack 221 and secondary rack 222 may be mechanically coupled in a variety of ways. Optionally, as shown in fig. 7 and 8, the transmission mechanism 22 further includes a spring 223 and a limit pin 224, the spring 223 is substantially parallel to the primary rack 221 and the secondary rack 222, the limit pin 224 is inclined with respect to the spring 223, and preferably, the limit pin 224 is perpendicular to the spring 223. One end of the stopper pin 224 is fixedly connected or abutted with one end of the spring 223, thereby forming an elastic connection structure that connects the primary rack 221 and the secondary rack 222, so that an elastic connection is formed between the secondary rack 222 and the secondary rack 222.

In an alternative embodiment, as shown in fig. 7, a spring 223 in the elastic connection structure is connected to the primary rack 221, and a stopper pin 224 is connected to the secondary rack 222. The primary rack 221 further has a stopper groove 221a, the stopper groove 221a is parallel to the moving direction of the primary rack 221, the spring 223 is disposed in the stopper groove 221a, and one end of the stopper pin 224 moves in the stopper groove 221 a.

In another alternative embodiment, as shown in fig. 8, a spring 223 is coupled to the secondary rack 222 and a limit pin 224 is coupled to the primary rack 221. The secondary rack 222 has a stopper groove 222a, the stopper groove 222a is parallel to the moving direction of the primary rack 221, the spring 223 is disposed in the stopper groove 222a, and one end of the stopper pin 224 moves along the stopper groove 222a in the stopper groove 222 a.

The carrier 31 is used for carrying a third portion for fixing the product, which is a different portion of the product from the first portion and the second portion. When the third part of the product is placed on the bearing table 31, the first part and the second part to be bent extend out of the bearing table 31, so that the bending operation is facilitated. The carrier 31 may have a contoured groove adapted to the shape of the product to position the product. Preferably, as shown in fig. 5, the carrier 31 has a detachable stopper 312, and the size of the contour groove can be adjusted by replacing the stopper 312 of a different model, so as to adapt to products of different sizes.

As shown in fig. 3 and 5, the carrier 31 may further include a guide block 311 for bending the product along a predetermined track. Taking the bending block to bend the product along the horizontal direction, the height of the bottom surface of the guide block 311 is substantially the same as or slightly higher than the height of the upper edge of the part of the product to be bent, and the guide block 311 and the upper end surface of the bearing table 31 form a space corresponding to the size of the product, so that the product can be prevented from being bent upwards or downwards.

Fig. 9 to 11 are schematic views showing the operation process of the transmission mechanism of the embodiment, fig. 12 is a schematic view showing the shape change of the exemplary product of the embodiment before and after bending, and fig. 13 to 15 are schematic views showing the operation process of the product bending mechanism. In which the structure of the transmission mechanism 22 of fig. 9-11 corresponds to the transmission mechanism 22 of fig. 7, and fig. 13-15 are partial views in the a direction of fig. 3. The operation of the product bending mechanism will be described below with reference to fig. 9 to 15, taking as an example the case where the product 4 in fig. 12 is bent from the upper shape in fig. 12 to the lower shape. Wherein the first portion 41 of the product 4 is rotated 270 deg. with respect to the third portion 43, counter-clockwise in fig. 13-15, and the second portion 42 is rotated 180 deg. with respect to the third portion 43, counter-clockwise in fig. 13-15, i.e. the first angle is 270 deg. and the second angle is 180 deg..

As shown in fig. 13, the third portion 43 of the product 4 is placed on the carrier 31 such that the first portion 41 and the second portion 42 protrude from the carrier 31. In the initial state, the compression amount of the spring 223 is minimal (may be zero), as shown in fig. 9. When the power source 21 starts to drive the primary rack 221 to move towards the first direction DIR1, since a certain friction resistance exists between the secondary rack 222 and the secondary gear 15, the resultant force of the spring 223 exerted on the secondary rack 222 through the limiting pin 224 is smaller than the friction resistance, the secondary rack 222 and the secondary gear 15 do not move, the relative movement occurs between the primary rack 221 and the secondary rack 222, the spring 223 is gradually compressed, and the elastic force of the spring 223 on the secondary rack 222 is gradually increased.

As shown in fig. 10, when spring 223 is compressed to a predetermined length, the resultant force of spring 223 to secondary rack 222 is greater than or equal to the frictional resistance between secondary rack 222 and secondary gear 15, secondary rack 222 starts to move, and secondary rack 222 and primary rack 221 move substantially in synchronization, and spring 223 is maintained within a certain compression amount range. The first and second bending blocks 12 and 13 move synchronously, bringing the first and

second portions

41 and 42 of the product 4 to rotate by a first angle about the rotation axis 11.

As shown in fig. 14, when the second bending block 13 rotates the second portion 42 to the first angle, the second bending block 13 and the second portion 42 of the product 4 contact with the side of the third portion 43, the third portion 43 blocks the second bending block 13 and the second portion 42 from further rotating, and the secondary gear 15 and the secondary rack 222 stop moving.

As shown in fig. 11, the primary rack 221 continues to move in the first direction DIR1, the spring 223 continues to compress, the first bending block 12 continues to rotate the first portion 41 until the first bending block 12 and the first portion 41 contact with the other side of the third portion 43, or the stopper pin 224 moves to one end of the stopper groove 221a, or the power source 21 moves for a predetermined stroke, the first bending block 12 stops moving, and the first portion 41 rotates by a second angle relative to the initial state, as shown in fig. 15. The entire product 4 is thus bent.

The power source 21 moves reversely to drive the primary rack 221 to move reversely until the other end of the limiting groove 221a abuts against the limiting pin 224 to drive the secondary rack 222 to move synchronously, the power source 21 moves for a preset stroke to reset the primary rack 221 and the secondary rack 222, the first bending block 12 and the second bending block 13 are reset correspondingly, the bent product 4 is taken down, and the product bending mechanism can enter the next processing cycle.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a product mechanism of bending which characterized in that includes:

the bending unit (1) comprises a rotating shaft (11) and a first bending block (12) and a second bending block (13) which rotate around the rotating shaft (11) respectively, wherein the first bending block (12) is configured to drive a first part (41) of a product to rotate by a first angle, the second bending block (13) is configured to drive a second part (42) of the product to rotate by a second angle, and the first part (41) and the second part (42) are two different parts of the product;

a driving unit (2) configured to drive the first bending block (12) and the second bending block (13) to rotate, wherein the driving unit (2) comprises a power source (21) and a transmission mechanism (22), the transmission mechanism (22) comprises a primary transmission mechanism and a secondary transmission mechanism, the primary transmission mechanism drives the first bending block (12) to rotate, and the secondary transmission mechanism drives the second bending block (13) to rotate; and

the bending machine comprises a frame (3) and a driving unit (2), wherein the frame (3) is provided with a bearing table (31) for bearing the product, the bending unit (1) and the driving unit (2) are arranged on the frame (3), and the rotating shaft (11) is fixedly connected with the frame (3);

wherein the first bending block (12) and the second bending block (13) move synchronously within a certain range.

2. The product bending mechanism according to claim 1, wherein the primary transmission mechanism comprises a primary rack (221), the secondary transmission mechanism comprises a secondary rack (222), the primary rack (221) and the secondary rack (222) are mechanically connected and parallel, and the power source (21) drives the primary rack (221) to move;

the bending unit (1) further comprises a primary gear (14) and a secondary gear (15), the primary gear (14) is coaxially and fixedly connected with the first bending block (12), the secondary gear (15) is coaxially and fixedly connected with the second bending block (13), the primary gear (14) is in meshing transmission with the primary rack (221), and the secondary gear (15) is in meshing transmission with the secondary rack (222).

3. The product bending mechanism according to claim 2, wherein the transmission mechanism (22) further comprises a spring (223) and a limit pin (224), the spring (223) is parallel to the primary rack (221) and the secondary rack (222), one end of the limit pin (224) and one end of the spring (223) are connected to form an elastic connection structure, and the elastic connection structure connects the primary rack (221) and the secondary rack (222).

4. The product bending mechanism according to claim 3, wherein the spring (223) is connected to the primary rack (221), the stopper pin (224) is fixedly connected to the secondary rack (222), the primary rack (221) further has a stopper groove (221a), and the stopper pin (224) and the spring (223) are at least partially disposed in the stopper groove (221 a).

5. The product bending mechanism according to claim 3, wherein the spring (223) is connected to the secondary rack (222), the stopper pin (224) is fixedly connected to the primary rack (221), the secondary rack (222) further has a stopper groove (222a), and the stopper pin (224) and the spring (223) are at least partially disposed in the stopper groove (222 a).

6. Product bending mechanism according to claim 2, wherein the bending unit (1) further comprises a first bearing by which the primary gear (14) is connected to the rotary shaft (11) and a second bearing by which the secondary gear (15) is connected to the rotary shaft (11).

7. Product bending mechanism according to claim 1, wherein said first bending block (12) has a first contact portion (121) and said second bending block (13) has a second contact portion (131), said first contact portion (121) and said second contact portion (131) being in contact with a first portion (41) and a second portion (42) of said product, respectively.

8. The product bending mechanism according to claim 2, wherein the first bending block (12) comprises a first contact portion (121), a connecting portion (122), and an extending portion (123), the first contact portion (121) is configured to contact the first portion (41) of the product, a first end of the connecting portion (122) is fixedly connected to the primary gear (14), the extending portion (123) extends from a second end of the connecting portion (122) in a direction away from the connecting portion (122) and is connected to the first contact portion (121), and the first bending block (12) is located outside the second bending block (13).

9. Product bending mechanism according to claim 2, wherein the machine frame (3) has two sliding rails (32) parallel to the primary rack (221) and the secondary rack (222), the primary rack (221) and the secondary rack (222) being movably connected to the sliding rails (32), respectively.

10. The product bending mechanism according to claim 1, wherein a guide block (311) is disposed on the bearing table (31), and the guide block (311) is configured to bend the product along a predetermined trajectory.

11. Product bending mechanism according to claim 1, wherein said carrier table (31) further has a stop (312) for fixing a third portion (43) of said product, said third portion (43) being a different portion of said product than said first portion (41) and said second portion (42).