CN213317264U

CN213317264U - Guiding mechanism of end insertion machine

Info

Publication number: CN213317264U
Application number: CN202021974524.8U
Authority: CN
Inventors: 陈琪; 文祥; 郑黎
Original assignee: Wuhan Yingge Precision Technology Co ltd
Current assignee: Wuhan Yingge Precision Technology Co ltd
Priority date: 2020-09-10
Filing date: 2020-09-10
Publication date: 2021-06-01
Anticipated expiration: 2030-09-10

Abstract

The utility model provides a guiding mechanism of tip insertion machine belongs to auto parts processing technology field. Including the mount pad, jack catch and direction subassembly, wherein have the first bar groove that is used for installing the steel wire on the mount pad, the jack catch is connected with the mount pad, and be configured as the length direction that can follow first bar groove and remove, the jack catch includes first clamping part and second clamping part, first clamping part and second clamping part are for first bar groove symmetrical arrangement, the direction subassembly includes first guide block and second guide block, first guide block is located between second guide block and the mount pad, first guiding hole has on the first guide block, the aperture of first guiding hole reduces along the direction of keeping away from the mount pad gradually, second bar groove has on the second guide block, second bar groove and first bar groove syntropy arrange, the one end phase-match that the mount pad was kept away from to second bar groove and first guiding hole. The guide mechanism can improve the processing yield.

Description

Guiding mechanism of end insertion machine

Technical Field

The disclosure relates to the technical field of automobile part machining, in particular to a guide mechanism of an end insertion machine.

Background

In a glass lifting system of an automobile, a steel wire for traction and transmission is generally arranged, and two ends of the steel wire are generally required to be provided with connecting blocks for matching with other components in the lifting system. The connecting block is a cylindrical structural member which is formed by independent processing, a through hole is formed in the middle of the connecting block, and the tail end of a steel wire penetrates through the through hole of the connecting block during processing and is connected and installed through die-casting processing.

In the related art, a feeding device is generally adopted to move the processed connecting block to a corresponding stamping position, then a worker manually aligns one end of a steel wire to a through hole in the middle of the connecting block and penetrates through the through hole, and then die-casting of the steel wire and the connecting block is completed through a stamping device on a control end insertion machine.

During manual with the through-hole of steel wire insertion connecting block through the staff, easily cause the steel wire to buckle because of the operation is unskilled or misoperation, perhaps steel wire male length leads to the unable fastening scheduling problem of being connected of steel wire and connecting block inadequately, causes the processing yield to hang down.

SUMMERY OF THE UTILITY MODEL

The embodiment of the disclosure provides a guiding mechanism of an end inserting machine, which can automatically guide a steel wire connected with a connecting block, so that the steel wire can be accurately inserted into a through hole of the connecting block, and the processing yield is improved. The technical scheme is as follows:

the disclosed embodiment provides a guide mechanism of an end insertion machine, which comprises:

a mounting seat, a first strip-shaped groove for mounting a steel wire is arranged on the mounting seat,

a jaw connected with the mounting base and configured to be movable in a length direction of the first bar-shaped groove, the jaw including a first clamping portion and a second clamping portion, the first and second clamping portions being symmetrically arranged with respect to the first bar-shaped groove,

the guide assembly comprises a first guide block and a second guide block, the first guide block is located between the second guide block and the mounting seat, a first guide hole is formed in the first guide block, the aperture of the first guide hole is gradually reduced along the direction of keeping away from the mounting seat, a second strip-shaped groove is formed in the second guide block, the second strip-shaped groove and the first strip-shaped groove are arranged in the same direction, and the second strip-shaped groove is matched with one end, far away from the mounting seat, of the first guide hole.

Optionally, the first guide block includes a first block and a second block, the first block has a first arc-shaped groove thereon, the second block has a second arc-shaped groove thereon, and the first guide block is configured such that when the first block and the second block are aligned, the first arc-shaped groove and the second arc-shaped groove are aligned to form a first guide hole.

Optionally, the end surface of the first clamping portion close to the second clamping portion is provided with a first wedge-shaped groove, and the end surface of the second clamping portion close to the first clamping portion is provided with a second wedge-shaped groove matched with the first wedge-shaped groove.

Optionally, the first clamping portion is provided with two limiting protrusions, the two limiting protrusions are arranged to protrude towards the second clamping portion and are respectively located on two sides of the first wedge-shaped groove, and the second clamping portion is provided with a limiting groove matched with the two limiting protrusions.

Optionally, the guide mechanism further includes a first detection assembly, the first detection assembly is located on one side of the second guide block away from the mounting seat, the first detection assembly includes a first infrared sensor and a second infrared sensor, the first infrared sensor and the second infrared sensor are symmetrically arranged relative to the second strip-shaped groove, and the first detection assembly is configured to control the movement of the clamping jaw according to the relative position of the connecting block and the second guide block sensed by the first infrared sensor and the second infrared sensor.

Optionally, the guide mechanism further comprises a second detection assembly, the second detection assembly is located on one side, away from the mounting seat, of the first detection assembly, the second detection assembly comprises a third infrared sensor and a fourth infrared sensor, the third infrared sensor and the fourth infrared sensor are symmetrically arranged relative to the second strip-shaped groove, and the second detection assembly is configured to control the movement of the clamping jaw according to the relative positions of the steel wire and the second guide block sensed by the third infrared sensor and the fourth infrared sensor.

Optionally, the guide mechanism further comprises a lifting assembly, and the mounting seat is connected with the lifting assembly and configured to be lifted in the vertical direction.

Optionally, the guide mechanism further includes a driving assembly, the driving assembly includes a sliding rail and two sliding motors, the sliding rail is arranged along the horizontal direction and is perpendicular to the first bar-shaped groove, the two sliding motors are slidably mounted on the sliding rail, and the first block and the second block are respectively connected with the two sliding motors.

Optionally, the second strip groove includes a first side wall and a second side wall that are parallel to each other, a junction of one end of the first side wall close to the mounting seat and the end surface of the second guide block has a first oblique chamfer, and a junction of one end of the second side wall close to the mounting seat and the end surface of the second guide block has a second oblique chamfer.

Optionally, the first guide block and the second guide block are plastic structural members.

The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:

the steel wire is straightened by placing the steel wire in the first strip-shaped groove of the mounting seat, and the first clamping parts and the second clamping parts which are symmetrically arranged on two sides of the first strip-shaped groove are controlled to mutually approach and clamp the middle part of the steel wire. The steel wire can follow the jack catch and remove to first guide block along the length direction in first bar groove, and the steel wire passes first guiding hole and second bar groove, and under the direction in first guiding hole and second bar groove, finally passes the through-hole that is located the connecting block middle part of one side that the mount pad was kept away from to the second guide block. The aperture through with first guiding hole sets up to reduce gradually along the direction of keeping away from the mount pad, even the steel wire takes place to buckle because of quality problems or removal when taking, the steel wire is passing first guiding hole and with the pore wall contact back of first guiding hole, also can follow the pore wall of first guiding hole to rather than matching the second bar groove removal of aliging, finally passes the connecting block through the direction in second bar groove, avoids unable accuracy to be connected with the connecting block, has improved the processing yield.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a schematic view of a combination structure of a mounting seat and a claw provided by an embodiment of the disclosure;

FIG. 2 is a schematic structural diagram of a jaw provided in the embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a second guide block provided in the embodiment of the present disclosure;

fig. 4 is a schematic view of a combination structure of a first guide block and a driving assembly according to an embodiment of the disclosure;

fig. 5 is a schematic view of a combined structure of a second guide block, a first detection assembly and a second detection assembly provided by the embodiment of the disclosure;

fig. 6 is a schematic view of a partially assembled structure of a mounting seat, a jaw and a guide assembly according to an embodiment of the disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic view of a combined structure of a mounting seat and a claw provided by an embodiment of the disclosure. Fig. 2 is a schematic structural diagram of a jaw provided in an embodiment of the present disclosure. Fig. 3 is a schematic structural diagram of a second guide block according to an embodiment of the present disclosure. Fig. 4 is a schematic structural diagram of a combination of a first guide block and a driving assembly according to an embodiment of the present disclosure. Fig. 5 is a schematic combined structure diagram of a second guide block, a first detection assembly and a second detection assembly provided in the embodiment of the present disclosure. Fig. 6 is a schematic view of a partially assembled structure of a mounting seat, a jaw and a guide assembly according to an embodiment of the disclosure. As shown in fig. 1 to 6, by practice, the present inventors provide a guide mechanism of an end-insertion machine, including a mount 100, a jaw 200, and a guide assembly 300. Wherein the content of the first and second substances,

the mounting seat 100 has a first bar-shaped groove 110 for mounting the wire m.

The jaws 200 are coupled to the mounting base 100 and configured to be movable along the length of the first linear groove 110. The jaw 200 includes a first clamping portion 210 and a second clamping portion 220, and the first clamping portion 210 and the second clamping portion 220 are symmetrically arranged with respect to the first bar-shaped groove 110.

The guide assembly 300 includes a first guide block 310 and a second guide block 320, the first guide block 310 is located between the second guide block 320 and the mounting base 100, the first guide block 310 has a first guide hole 311, and the diameter of the first guide hole 311 is gradually reduced in a direction away from the mounting base 100. The second guide block 320 has a second strip-shaped groove 321, the second strip-shaped groove 321 is arranged in the same direction as the first strip-shaped groove 110, and the second strip-shaped groove 321 is matched with one end of the first guide hole 311 far away from the mounting base 100.

In the embodiment of the present disclosure, when the steel wire m needs to be connected to the connection block n, the connection block n is first moved to a side of the second guide block 320 away from the mounting seat 100 by the feeding device, and the through hole in the middle of the connection block n is aligned with the second strip-shaped groove 321 on the second guide block 320. Then, the worker can place the steel wire m in the first bar-shaped groove 110 of the mounting base 100, so that the steel wire m is straightened, and the first clamping portion 210 and the second clamping portion 220 symmetrically arranged at two sides of the first bar-shaped groove 110 are controlled to be close to each other and clamp the middle part of the steel wire m. Then the control jaw 200 drives the steel wire m to move towards the first guide block 310 along the length direction of the first strip-shaped groove 110, the steel wire m passes through the first guide hole 311 on the first guide block 310 and the second strip-shaped groove 321 on the second guide block 320, and finally passes through the through hole in the middle of the connecting block n on the side of the second guide block 320 far away from the mounting seat 100 under the guide of the first guide hole 311 and the second strip-shaped groove 321, thereby completing one-time guide. And then the steel wire m and the connecting block n are subjected to die-casting processing through a stamping device of the end inserting machine, so that the connection of the steel wire m and the connecting block n can be completed. And the aperture through with first guiding hole 311 sets up to the direction that keeps away from mount pad 100 and reduces gradually along, even steel wire m takes place to buckle because of quality problems or removal when taking, steel wire m is passing first guiding hole 311 and with the pore wall contact back of first guiding hole 311, also can follow the pore wall of first guiding hole 311 to the second bar groove 321 that aligns rather than, finally pass connecting block n through the direction of second bar groove 321, avoid unable accurate being connected with connecting block n, the processing yield has been improved.

Optionally, the first guide block 310 includes a first block 312 and a second block 313, the first block 312 has a first arc-shaped groove 3121 thereon, the second block 313 has a second arc-shaped groove 3131 thereon, and the first guide block 310 is configured such that when the first block 312 and the second block 313 are aligned, the first arc-shaped groove 3121 and the second arc-shaped groove 3131 are aligned to form the first guide hole 311. Illustratively, in the disclosed embodiment, the first guide block 310 is formed by combining a first block 312 and a second block 313. When the steel wire m needs to be guided, the first block 312 and the second block 313 are connected in an involution manner, and the first arc-shaped groove 3121 and the second arc-shaped groove 3131 can be involuted to form the first guide hole 311 to guide the steel wire m. And after steel wire m and connecting block n connect the completion through die-casting, through separating first block 312 and second block 313, make things convenient for the staff directly to take off steel wire m and connecting block n by the die-casting processing position, reduce the work load that the staff got the piece, improved guiding mechanism's practicality, improved machining efficiency.

Optionally, the end surface of the first clamping portion 210 close to the second clamping portion 220 has a first wedge groove 211, and the end surface of the second clamping portion 220 close to the first clamping portion 210 has a second wedge groove 221 matching with the first wedge groove 211. The steel wire m is directly clamped by the end surfaces of the first clamping part 210 and the second clamping part 220 which are close to each other, and the steel wire m may be damaged due to excessive clamping force. Exemplarily, by providing the first wedge-shaped groove 211 on the first clamping portion 210 and providing the second wedge-shaped groove 221 on the second clamping portion 220, when the first clamping portion 210 and the second clamping portion 220 clamp the steel wire m, the steel wire m is located in a clamping space where the first wedge-shaped groove 211 and the second wedge-shaped groove 221 are located, a distance and an angle between groove walls of the first wedge-shaped groove 211 and the second wedge-shaped groove 221 can be correspondingly set according to a size of the steel wire m to be clamped, so that the steel wire m is prevented from being clamped flat and damaged due to too large clamping force while the steel wire m is prevented from sliding in a length direction in the clamping of the steel wire m, and the processing yield is further improved.

Optionally, the first clamping portion 210 has two limiting protrusions 212, the two limiting protrusions 212 are arranged to protrude toward the second clamping portion 220 and are respectively located at two sides of the first wedge-shaped groove 211, and the second clamping portion 220 has a limiting groove 222 matching with the two limiting protrusions 212. Exemplarily, when the first clamping portion 210 and the second clamping portion 220 are close to each other to clamp the steel wire m, the two limiting protrusions 212 located at two sides of the first wedge-shaped groove 211 are correspondingly inserted into the limiting grooves 222 on the second clamping portion 220, and the two limiting protrusions 212 can limit the steel wire m in the vertical direction, so that the steel wire m is prevented from shaking in the vertical direction due to vibration or other reasons in the clamping moving process, the clamping stability is improved, and the processing yield is further improved.

Optionally, the guide mechanism further includes a first detection assembly 400, the first detection assembly 400 is positioned on a side of the second guide block 320 far from the mounting seat 100, the first detection assembly 400 includes a first infrared sensor 410 and a second infrared sensor 420, the first infrared sensor 410 and the second infrared sensor 420 are symmetrically arranged with respect to the second strip-shaped groove 321, and the first detection assembly 400 is configured to control the movement of the jaw 200 according to the relative position of the connecting block n and the second guide block 320 sensed by the first infrared sensor 410 and the second infrared sensor. Illustratively, in the embodiment of the present disclosure, before guiding and moving the steel wire m, the first infrared sensor 410 and the second infrared sensor 420 symmetrically arranged at two sides of the second strip-shaped groove 321 sense the connection block n transferred to the side of the second guide block 320 away from the mounting base 100, if the connection block n is located at a correct stamping position, that is, if the through hole on the connection block n is aligned with the second strip-shaped groove 321, the connection block n blocks the infrared rays emitted by the first infrared sensor 410 and the second infrared sensor 420, so that the first infrared sensor 410 and the second infrared sensor 420 emit a first control signal to the control system of the guiding mechanism, and after receiving the first control signal through the control system, the worker can control the guiding mechanism to move and guide the steel wire m through manual or computer program control, guarantee during steel wire m can accurately insert the through-hole on the connecting block n, improved guiding mechanism's direction accuracy.

Illustratively, referring to fig. 5, the straight line indicated by the reference mark o represents infrared rays emitted from the second infrared sensor 420, which serve as an auxiliary identification.

Optionally, the guide mechanism further includes a second detection assembly 500, the second detection assembly 500 is located at a side of the first detection assembly 400 away from the mounting base 100, the second detection assembly 500 includes a third infrared sensor 510 and a fourth infrared sensor 520, the third infrared sensor 510 and the fourth infrared sensor 520 are symmetrically arranged with respect to the second strip-shaped groove 321, and the second detection assembly 500 is configured to control the movement of the jaws 200 according to the relative positions of the steel wires m and the second guide block 320 sensed by the third infrared sensor 510 and the fourth infrared sensor 520. When connecting steel wire m and connecting block n, need guarantee that steel wire m wears out the certain distance of through-hole of connecting block n and just can guarantee that steel wire m and connecting block n connect the fastening after die-casting processing. Illustratively, in the embodiment of the present disclosure, after the steel wire m passes through the through hole of the connection block n, the end of the steel wire m passing through is sensed by the third infrared sensor 510 and the fourth infrared sensor 520. If the length of the steel wire m penetrating through the connecting block n is enough, the steel wire m can block infrared rays emitted by the third infrared sensor 510 and the fourth infrared sensor 520; when the length of the steel wire m penetrating through the connecting block n is insufficient, the third infrared sensor 510 and the fourth infrared sensor 520 can receive infrared rays sent out mutually, at the moment, the third infrared sensor 510 and the fourth infrared sensor 520 can send out a second control signal to a control system of the guiding mechanism, and after a worker receives the second control signal through the control system, the worker can control the jaw 200 to drive the steel wire m to continuously move to the connecting block n along the length direction of the first strip-shaped groove 10 through a manual operation or a computer program, so that the length of the steel wire m penetrating through the connecting block n is enough to block the infrared rays sent out by the third infrared sensor 510 and the fourth infrared sensor 520. The guiding accuracy of the guiding mechanism and the processing yield of the end inserting machine are further improved.

Optionally, the guiding mechanism further comprises a lifting assembly 600, and the mounting base 100 is connected to the lifting assembly 600 and configured to be lifted and lowered in the vertical direction. Illustratively, since the stamping assembly of the end inserter is generally large in size and high in height, by providing the lifting assembly 600, for example, a telescopic rod or a lifting rail lifts and lowers the mounting base 100, a worker can lay down the steel wire m when the mounting base 100 is located at a lowered position, lift the mounting base 100 and the steel wire m through the lifting assembly 600 to align with the guiding assembly 300, thereby facilitating the worker to lay down the steel wire m, and further improving the practicability of the guiding mechanism.

Optionally, the guiding mechanism further includes a driving assembly 700, the driving assembly 700 includes a sliding rail 710 and two sliding motors 720, the sliding rail 710 is disposed along the horizontal direction and perpendicular to the first bar-shaped groove 110, the two sliding motors 720 are slidably mounted on the sliding rail 710, and the first block 312 and the second block 313 are respectively connected to the two sliding motors 720. Exemplarily, in the embodiment of the present disclosure, the two sliding motors 720 drive the first block 312 and the second block 313 to be involuted and separated in the horizontal direction, so that manual operation is not required, assembly gaps and errors are avoided, and the guiding accuracy of the guiding mechanism is further improved.

Optionally, the second strip-shaped groove 321 includes a first side wall 3211 and a second side wall 3212 that are parallel to each other, a junction of one end of the first side wall 3211 near the mounting seat 100 and the end surface of the second guide block 320 has a first oblique chamfer 3213, and a junction of one end of the second side wall 3212 near the mounting seat 100 and the end surface of the second guide block 320 has a second oblique chamfer 3214. Exemplarily, in the embodiment of the present disclosure, by providing the first oblique chamfer 3213 at the connection between the end of the first sidewall 3211 close to the mounting seat 100 and the end surface of the second guide block 320, and providing the second oblique chamfer 3214 at the connection between the end of the second sidewall 3212 close to the mounting seat 100 and the end surface of the second guide block 320, if the second strip-shaped groove 321 is not aligned with the first guide hole 311, or even if the steel wire m is bent after passing through the first guide hole 311, the steel wire m may slide into the second strip-shaped groove 321 along the chamfer oblique surface of the first oblique chamfer 3213 or the second oblique chamfer 3214, thereby preventing the steel wire m passing through the first guide hole 311 from being unable to accurately pass through the second strip-shaped groove 321 due to the existence of an assembly gap between the second guide block 320 and the first guide block 310, and further improving the guiding accuracy of the guiding mechanism.

Optionally, the first guide block 310 and the second guide block 320 are plastic structural members. The plastic structural member has the advantages of light weight, good wear resistance, good insulativity, low thermal conductivity and the like. By manufacturing the first guide block 310 and the second guide block 320 from plastic, the manufacturing and using costs of the guide mechanism can be effectively reduced.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.

The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.

Claims

1. A guide mechanism for an end insertion machine, comprising:

the mounting seat is provided with a first strip-shaped groove for mounting a steel wire,

a jaw connected with the mount and configured to be movable in a length direction of the first bar-shaped groove, the jaw including a first grip portion and a second grip portion, the first and second grip portions being symmetrically arranged with respect to the first bar-shaped groove,

the direction subassembly, the direction subassembly includes first guide block and second guide block, first guide block is located the second guide block with between the mount pad, first guiding hole has on the first guide block, the aperture of first guiding hole is along keeping away from the direction of mount pad reduces gradually, second bar groove has on the second guide block, the second bar groove with first bar groove syntropy is arranged, the second bar groove with first guiding hole is kept away from the one end phase-match of mount pad.

2. The guide mechanism of an end inserter of claim 1 wherein the first guide block comprises a first block having a first arcuate slot thereon and a second block having a second arcuate slot thereon, the first guide block configured such that when the first and second blocks are mated, the first and second arcuate slots are mated to form the first guide aperture.

3. The guide mechanism of an end inserter according to claim 2 wherein the end surface of the first clamping portion adjacent the second clamping portion has a first wedge groove thereon and the end surface of the second clamping portion adjacent the first clamping portion has a second wedge groove thereon that mates with the first wedge groove.

4. The guide mechanism of an end inserting machine according to claim 3, wherein the first clamping part is provided with two limiting protrusions which are arranged to protrude towards the second clamping part and are respectively positioned at two sides of the first wedge-shaped groove, and the second clamping part is provided with limiting grooves matched with the two limiting protrusions.

5. The guide mechanism of an end inserter according to claim 4 wherein the guide mechanism further comprises a first detection assembly located on a side of the second guide block remote from the mount, the first detection assembly comprising a first infrared sensor and a second infrared sensor, the first infrared sensor and the second infrared sensor being symmetrically arranged with respect to the second bar-shaped slot, the first detection assembly being configured to control the movement of the jaws in accordance with the relative positions of the first infrared sensor and the second infrared sensor sensing the connecting block and the second guide block.

6. The guide mechanism of an end inserter according to claim 5 wherein the guide mechanism further comprises a second detection assembly located on a side of the first detection assembly remote from the mount, the second detection assembly comprising a third infrared sensor and a fourth infrared sensor, the third infrared sensor and the fourth infrared sensor being symmetrically arranged with respect to the second bar-shaped slot, the second detection assembly being configured to control the movement of the jaws in accordance with the third infrared sensor and the fourth infrared sensor sensing the relative position of the steel wire and the second guide block.

7. The guide mechanism of an end inserter according to claim 6 wherein the guide mechanism further comprises a lifting assembly, the mounting block being connected to the lifting assembly and configured to be vertically liftable.

8. The guide mechanism of an end inserter according to claim 7 wherein the guide mechanism further comprises a drive assembly comprising a slide rail and two slide motors, the slide rail being arranged horizontally and perpendicular to the first linear slot, the two slide motors being slidably mounted on the slide rail, the first block and the second block being connected to the two slide motors, respectively.

9. The guide mechanism of an end inserter according to claim 8 wherein the second strip groove comprises a first side wall and a second side wall parallel to each other, the first side wall having a first chamfer near the junction of the end of the mounting block and the end face of the second guide block, the second side wall having a second chamfer near the junction of the end of the mounting block and the end face of the second guide block.

10. The guide mechanism of an end inserter machine as defined in claim 9 wherein the first and second guide blocks are plastic structural members.