Suspended pressing head with automatic centering function

Abstract

The utility model relates to the field of press fitting of an auxiliary frame bushing of an automobile. A suspension pressing head with an automatic centering function comprises a pressing head body, the pressing head body comprises a pressing connection part and a mounting part which are arranged front and back, a positioning groove is formed in the pressing connection part, and the opening side of the positioning groove is an outwards-expanded conical guide-in opening; the front cover plate and the rear cover plate are arranged front and back; the front cover plate and the rear cover plate are detachably connected to define a movable cavity in which the mounting part moves in a centering manner; a groove for embedding the ball is formed in one end, close to the front cover plate, of the rear cover plate, and the ball abuts against the mounting part; the end, away from the front cover plate, of the rear cover plate is provided with a connector used for connecting the telescopic cylinder. The four sides of the mounting part are in threaded connection with bolts penetrating through the rear cover plate, and springs are clamped between the heads of the bolts and the rear cover plate. By optimizing the structure of the pressure head, the automatic centering of the pressure head is conveniently realized. Through the arrangement of the bolt and the spring, after the lining is embedded from the conical guide-in opening, the position of the pressing head is adjusted in a self-adaptive mode.

Description

Technical Field

[0001] The utility model relates to the field of press-fitting of automotive subframe bushings, and specifically relates to a structure of a pressing head. Background Art

[0002] As a part of the chassis system, the subframe is responsible for connecting the wheels and the vehicle body and bears the impact and vibration from the road surface. Integrating the bushings on the subframe can better integrate the chassis system and optimize the dynamic performance and NVH performance of the vehicle.

[0003] The bushings are integrated in the subframe body. In order to realize synchronous press-fitting of multiple bushings, more complex press-fitting equipment needs to be designed; during synchronous press-fitting at multiple points, the position and pressure of each mounting point need to be accurately controlled. If the precision control is not in place, it may lead to uneven connection between the subframe and the vehicle body, affecting the performance and stability of the whole vehicle.

[0004] Currently, there is a lack of a pressing head structure that can automatically center and is suitable for synchronous press-fitting of multiple bushings. Summary of the Utility Model

[0005] Aiming at the problems existing in the prior art, the utility model provides a suspension pressing head with an automatic centering function to solve at least one of the above technical problems.

[0006] The technical solution of the utility model is: a suspension pressing head with an automatic centering function, including a pressing head, characterized in that the pressing head includes a pressing part and a mounting part arranged front and back, a positioning groove is opened on the pressing part, and the opening side of the positioning groove is an outward-expanded tapered inlet;

[0007] It also includes a front cover plate and a rear cover plate arranged front and back, the front cover plate and the rear cover plate are detachably connected to enclose a movable cavity for the centering movement of the mounting part;

[0008] A groove for embedding a ball is opened at one end of the rear cover plate adjacent to the front cover plate, and the ball abuts against the mounting part;

[0009] A connection port for connecting a telescopic cylinder is opened at one end of the rear cover plate away from the front cover plate;

[0010] Bolts passing through the rear cover plate are threadedly connected to four sides of the mounting part, and a spring is clamped between the head of the bolt and the rear cover plate.

[0011] By optimizing the structure of the pressing head, the automatic centering of the pressing head is facilitated. Through the setting of the bolts and springs, after the bushing is inserted from the tapered inlet, the position of the pressing head is adjusted adaptively. The pressing head is suspended and supported by the springs and bolts on four sides, facilitating the adaptive adjustment of the pressing head in the up, down, left, and right directions.

[0012] Further preferably, an installation groove with openings at both the front and the back is formed in the center of the front cover plate. An extending limiting portion extending inwards is provided on the front side of the installation groove, and the extending limiting portion abuts against the front side surface of the installation portion.

[0013] The crimping portion extends out of the installation groove.

[0014] It is convenient to realize the detachable assembly and limitation of the pressing head.

[0015] Further preferably, there is a gap between the inner wall of the installation groove and the outer wall of the installation portion.

[0016] Further preferably, the width of the gap is 3-5 mm.

[0017] Further preferably, the front cover plate and the rear cover plate are detachably connected by installation bolts.

[0018] Further preferably, a through hole for passing through the bolt is formed in the front cover plate, and a counterbore portion for abutting against the spring is formed outside the through hole.

[0019] One end of the spring abuts against the counterbore portion, and the other end of the spring abuts against the head of the bolt.

[0020] It is convenient to limit the spring.

[0021] Further preferably, two bolts arranged side by side are threadedly connected to the upper side, left side, right side and lower side of the installation portion.

[0022] Further preferably, the groove is an annular groove.

[0023] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0024] The present utility model realizes the fine adjustment of the pressing head in two dimensions, and further realizes the automatic centering of the pressing head. Description of the Drawings

[0025] Figure 1 It is a sectional view of Specific Embodiment 1 of the present utility model;

[0026] Figure 2 It is a structural schematic diagram of Specific Embodiment 1 of the present utility model;

[0027] Figure 3 It is an exploded view of Specific Embodiment 1 of the present utility model;

[0028] Figure 4 It is an exploded view of Specific Embodiment 1 of the present utility model;

[0029] Figure 5This is a schematic diagram of the specific embodiment 1 of the utility model in a matching state with a bushing;

[0030] Figure 6 It is a schematic diagram of the structure of the bushing of the specific embodiment 1 of the utility model.

[0031] In the figure, 1 is a front cover plate, 2 is a rear cover plate, 3 is a pressure head, 4 is a bolt, 5 is a spring, 6 is a ball, 7 is a bushing, 31 is a mounting portion, and 32 is a crimping portion. DETAILED DESCRIPTION

[0032] See also Figures 1 to 6 , Specific embodiment 1, a suspended pressure head with automatic centering function, including a pressure head 3, the pressure head 3 includes a crimping part 32 and a mounting part 31 arranged in front and back, a positioning groove is provided on the crimping part 32, and the opening side of the positioning groove is an outward-expanding conical introduction port; it also includes a front cover plate 1 and a rear cover plate 2 arranged in front and back, the front cover plate 1 and the rear cover plate 2 are detachably connected to form an active cavity for centering and moving of the mounting part 31; a groove for embedding a ball 6 is provided at one end of the rear cover plate 2 adjacent to the front cover plate 1, and the ball 6 abuts against the mounting part 31; a connection port for connecting a telescopic cylinder is provided at one end of the rear cover plate 2 away from the front cover plate 1; bolts 4 passing through the rear cover plate 2 are threadedly connected on all four sides of the mounting part 31, and a spring 5 is sandwiched between the head of the bolt 4 and the rear cover plate 2. The utility model optimizes the structure of the pressure head 3 to facilitate the automatic centering of the pressure head 3. Through the arrangement of the bolts and the spring, after the bushing 7 is embedded from the conical introduction port, the position of the pressure head 3 can be adaptively adjusted.

[0033] The axial end of the bushing is provided with an outer protrusion extending into the positioning groove. The positioning groove is used to insert the outer protrusion. The front end surface of the front cover plate is used to abut against the outer wall of the bushing. The front end surface of the cover plate is the force contact surface of the bushing.

[0034] The center of the front cover plate 1 is provided with a mounting groove with both front and rear openings, and the front side of the mounting groove is provided with an inwardly extending extension limit portion, which abuts against the front side of the mounting portion 31; the crimping portion 32 extends out of the mounting groove. This facilitates the detachable assembly limit of the pressure head 3. The rear side cross section of the mounting portion is a rounded square. The rear side cross section of the mounting groove is a rounded square.

[0035] There is a gap between the inner wall of the mounting groove and the outer wall of the mounting portion 31. The width of the gap is 3-5 mm.

[0036] The front cover plate 1 and the rear cover plate 2 are detachably connected by mounting bolts.

[0037] The front cover plate 1 is provided with a perforation for passing through the bolt 4, and a counterbore portion for abutting against the spring 5 is provided outside the perforation; one end of the spring 5 abuts against the counterbore portion, and the other end of the spring 5 abuts against the head of the bolt 4. This facilitates the limitation of the spring. The outside of the perforation refers to the side of the perforation away from the installation groove. The difference between the inner diameter of the side of the perforation adjacent to the installation groove and the outer diameter of the bolt is 1 mm.

[0038] Two bolts 4 arranged side by side are threadedly connected to the upper side, left side, right side and lower side of the installation portion 31. The length directions of the bolts on the upper side and the lower side of the installation portion are vertical directions. The length directions of the bolts on the left side and the right side of the installation portion are left-right directions.

[0039] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A suspended pressure head with automatic centering function, comprising a pressure head, characterized in that: The pressure head includes a front and rear crimping portion and a mounting portion, the crimping portion is provided with a positioning groove, and the opening side of the positioning groove is an outwardly expanded conical introduction port; It also includes a front cover plate and a rear cover plate arranged in front and back, wherein the front cover plate and the rear cover plate are detachably connected to form an active cavity for the installation part to be centered and movable; A groove for embedding a ball is formed at one end of the rear cover plate adjacent to the front cover plate, and the ball is against the mounting portion; The end of the rear cover plate away from the front cover plate is provided with a connection port for connecting to the telescopic cylinder; Bolts passing through the rear cover plate are threadedly connected to the four sides of the mounting portion, and a spring is sandwiched between the head of the bolt and the rear cover plate.

2. The automatic centering function suspended pressure head according to claim 1, characterized in that: A mounting groove with front and rear openings is provided in the center of the front cover plate, and an inwardly extending extension limit portion is provided on the front side of the mounting groove, and the extension limit portion abuts against the front side surface of the mounting portion; The crimping portion extends out of the mounting groove.

3. The automatic centering function suspended pressure head according to claim 2, characterized in that: There is a gap between the inner wall of the mounting groove and the outer wall of the mounting portion.

4. The automatic centering function suspended pressure head according to claim 3, characterized in that: The width of the gap is 3-5 mm.

5. The automatic centering function suspended pressure head according to claim 1, characterized in that: The front cover plate and the rear cover plate are detachably connected via mounting bolts.

6. The automatic centering function suspended pressure head according to claim 1, characterized in that: The front cover plate is provided with a through hole for passing the bolt, and the outer side of the through hole is provided with a countersunk portion for supporting the spring; One end of the spring abuts against the countersunk portion, and the other end of the spring abuts against the head of the bolt.

7. The automatic centering function suspended pressure head according to claim 1, characterized in that: The upper side, the left side, the right side and the lower side of the mounting portion are all threadedly connected with two bolts arranged side by side.

8. The automatic centering function suspended pressure head according to claim 1, characterized in that: The groove is a circular ring-shaped groove.

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